init

Telegram/SourceFiles/_other/packer.cpp

@@ -0,0 +1,568 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "packer.h"
+
+bool BetaChannel = false;
+quint64 AlphaVersion = 0;
+bool OnlyAlphaKey = false;
+
+const char *PublicKey = "\
+-----BEGIN RSA PUBLIC KEY-----\n\
+MIGJAoGBAMA4ViQrjkPZ9xj0lrer3r23JvxOnrtE8nI69XLGSr+sRERz9YnUptnU\n\
+BZpkIfKaRcl6XzNJiN28cVwO1Ui5JSa814UAiDHzWUqCaXUiUEQ6NmNTneiGx2sQ\n\
++9PKKlb8mmr3BB9A45ZNwLT6G9AK3+qkZLHojeSA+m84/a6GP4svAgMBAAE=\n\
+-----END RSA PUBLIC KEY-----\
+";
+
+const char *PublicBetaKey = "\
+-----BEGIN RSA PUBLIC KEY-----\n\
+MIGJAoGBALWu9GGs0HED7KG7BM73CFZ6o0xufKBRQsdnq3lwA8nFQEvmdu+g/I1j\n\
+0LQ+0IQO7GW4jAgzF/4+soPDb6uHQeNFrlVx1JS9DZGhhjZ5rf65yg11nTCIHZCG\n\
+w/CVnbwQOw0g5GBwwFV3r0uTTvy44xx8XXxk+Qknu4eBCsmrAFNnAgMBAAE=\n\
+-----END RSA PUBLIC KEY-----\
+";
+
+extern const char *PrivateKey;
+extern const char *PrivateBetaKey;
+#include "../../../../DesktopPrivate/packer_private.h" // RSA PRIVATE KEYS for update signing
+#include "../../../../DesktopPrivate/alpha_private.h" // private key for alpha version file generation
+
+QString countAlphaVersionSignature(quint64 version);
+
+// sha1 hash
+typedef unsigned char uchar;
+typedef unsigned int uint32;
+typedef signed int int32;
+
+namespace{
+
+struct BIODeleter {
+	void operator()(BIO *value) {
+		BIO_free(value);
+	}
+};
+
+inline auto makeBIO(const void *buf, int len) {
+	return std::unique_ptr<BIO, BIODeleter>{
+		BIO_new_mem_buf(buf, len),
+	};
+}
+
+inline uint32 sha1Shift(uint32 v, uint32 shift) {
+	return ((v << shift) | (v >> (32 - shift)));
+}
+
+void sha1PartHash(uint32 *sha, uint32 *temp) {
+	uint32 a = sha[0], b = sha[1], c = sha[2], d = sha[3], e = sha[4], round = 0;
+
+#define _shiftswap(f, v) { \
+		uint32 t = sha1Shift(a, 5) + (f) + e + v + temp[round]; \
+		e = d; \
+		d = c; \
+		c = sha1Shift(b, 30); \
+		b = a; \
+		a = t; \
+		++round; \
+	}
+
+#define _shiftshiftswap(f, v) { \
+		temp[round] = sha1Shift((temp[round - 3] ^ temp[round - 8] ^ temp[round - 14] ^ temp[round - 16]), 1); \
+		_shiftswap(f, v) \
+	}
+
+	while (round < 16) _shiftswap((b & c) | (~b & d), 0x5a827999)
+	while (round < 20) _shiftshiftswap((b & c) | (~b & d), 0x5a827999)
+	while (round < 40) _shiftshiftswap(b ^ c ^ d, 0x6ed9eba1)
+	while (round < 60) _shiftshiftswap((b & c) | (b & d) | (c & d), 0x8f1bbcdc)
+	while (round < 80) _shiftshiftswap(b ^ c ^ d, 0xca62c1d6)
+
+#undef _shiftshiftswap
+#undef _shiftswap
+
+	sha[0] += a;
+	sha[1] += b;
+	sha[2] += c;
+	sha[3] += d;
+	sha[4] += e;
+}
+
+} // namespace
+
+int32 *hashSha1(const void *data, uint32 len, void *dest) {
+	const uchar *buf = (const uchar *)data;
+
+	uint32 temp[80], block = 0, end;
+	uint32 sha[5] = {0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0};
+	for (end = block + 64; block + 64 <= len; end = block + 64) {
+		for (uint32 i = 0; block < end; block += 4) {
+			temp[i++] = (uint32) buf[block + 3]
+					| (((uint32) buf[block + 2]) << 8)
+					| (((uint32) buf[block + 1]) << 16)
+					| (((uint32) buf[block]) << 24);
+		}
+		sha1PartHash(sha, temp);
+	}
+
+	end = len - block;
+	memset(temp, 0, sizeof(uint32) * 16);
+	uint32 last = 0;
+	for (; last < end; ++last) {
+		temp[last >> 2] |= (uint32)buf[last + block] << ((3 - (last & 0x03)) << 3);
+	}
+	temp[last >> 2] |= 0x80 << ((3 - (last & 3)) << 3);
+	if (end >= 56) {
+		sha1PartHash(sha, temp);
+		memset(temp, 0, sizeof(uint32) * 16);
+	}
+	temp[15] = len << 3;
+	sha1PartHash(sha, temp);
+
+	uchar *sha1To = (uchar*)dest;
+
+	for (int32 i = 19; i >= 0; --i) {
+		sha1To[i] = (sha[i >> 2] >> (((3 - i) & 0x03) << 3)) & 0xFF;
+	}
+
+	return (int32*)sha1To;
+}
+
+QString AlphaSignature;
+
+int writeAlphaKey() {
+	if (!AlphaVersion) {
+		return 0;
+	}
+	QString keyName(QString("talpha_%1_key").arg(AlphaVersion));
+	QFile key(keyName);
+	if (!key.open(QIODevice::WriteOnly)) {
+		cout << "Can't open '" << keyName.toUtf8().constData() << "' for write..\n";
+		return -1;
+	}
+	key.write(AlphaSignature.toUtf8());
+	key.close();
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	QString workDir;
+
+	QString remove;
+	int version = 0;
+	[[maybe_unused]] bool targetwin64 = false;
+	[[maybe_unused]] bool targetwinarm = false;
+	[[maybe_unused]] bool targetarmac = false;
+	QFileInfoList files;
+	for (int i = 0; i < argc; ++i) {
+		if (string("-path") == argv[i] && i + 1 < argc) {
+			QString path = workDir + QString(argv[i + 1]);
+			QFileInfo info(path);
+			files.push_back(info);
+			if (remove.isEmpty()) remove = info.canonicalPath() + "/";
+		} else if (string("-target") == argv[i] && i + 1 < argc) {
+			targetwin64 = (string("win64") == argv[i + 1]);
+			targetwinarm = (string("winarm") == argv[i + 1]);
+		} else if (string("-arch") == argv[i] && i + 1 < argc) {
+			targetarmac = (string("arm64") == argv[i + 1]);
+			if (!targetarmac && string("x86_64") != argv[i + 1]) {
+				cout << "Bad -arch param value passed: " << argv[i + 1] << "\n";
+				return -1;
+			}
+		} else if (string("-version") == argv[i] && i + 1 < argc) {
+			version = QString(argv[i + 1]).toInt();
+		} else if (string("-beta") == argv[i]) {
+			BetaChannel = true;
+		} else if (string("-alphakey") == argv[i]) {
+			OnlyAlphaKey = true;
+		} else if (string("-alpha") == argv[i] && i + 1 < argc) {
+			AlphaVersion = QString(argv[i + 1]).toULongLong();
+			if (AlphaVersion > version * 1000ULL && AlphaVersion < (version + 1) * 1000ULL) {
+				BetaChannel = false;
+				AlphaSignature = countAlphaVersionSignature(AlphaVersion);
+				if (AlphaSignature.isEmpty()) {
+					return -1;
+				}
+			} else {
+				cout << "Bad -alpha param value passed, should be for the same version: " << version << ", alpha: " << AlphaVersion << "\n";
+				return -1;
+			}
+		}
+	}
+	if (OnlyAlphaKey) {
+		return writeAlphaKey();
+	}
+
+	if (files.isEmpty() || remove.isEmpty() || version <= 1016 || version > 999999999) {
+#ifdef Q_OS_WIN
+		cout << "Usage: Packer.exe -path {file} -version {version} OR Packer.exe -path {dir} -version {version}\n";
+#elif defined Q_OS_MAC
+		cout << "Usage: Packer.app -path {file} -version {version} OR Packer.app -path {dir} -version {version}\n";
+#else
+		cout << "Usage: Packer -path {file} -version {version} OR Packer -path {dir} -version {version}\n";
+#endif
+		return -1;
+	}
+
+	bool hasDirs = true;
+	while (hasDirs) {
+		hasDirs = false;
+		for (QFileInfoList::iterator i = files.begin(); i != files.end(); ++i) {
+			QFileInfo info(*i);
+			QString fullPath = info.canonicalFilePath();
+			if (info.isDir()) {
+				hasDirs = true;
+				files.erase(i);
+				QDir d = QDir(info.absoluteFilePath());
+				QString fullDir = d.canonicalPath();
+				QStringList entries = d.entryList(QDir::Files | QDir::Dirs | QDir::NoSymLinks | QDir::NoDotAndDotDot);
+				files.append(d.entryInfoList(QDir::Files | QDir::Dirs | QDir::NoSymLinks | QDir::NoDotAndDotDot));
+				break;
+			} else if (!info.isReadable()) {
+				cout << "Can't read: " << info.absoluteFilePath().toUtf8().constData() << "\n";
+				return -1;
+			} else if (info.isHidden()) {
+				hasDirs = true;
+				files.erase(i);
+				break;
+			}
+		}
+	}
+	for (QFileInfoList::iterator i = files.begin(); i != files.end(); ++i) {
+		QFileInfo info(*i);
+		if (!info.canonicalFilePath().startsWith(remove)) {
+			cout << "Can't find '" << remove.toUtf8().constData() << "' in file '" << info.canonicalFilePath().toUtf8().constData() << "' :(\n";
+			return -1;
+		}
+	}
+
+	QByteArray result;
+	{
+		QBuffer buffer(&result);
+		buffer.open(QIODevice::WriteOnly);
+		QDataStream stream(&buffer);
+		stream.setVersion(QDataStream::Qt_5_1);
+
+		if (AlphaVersion) {
+			stream << quint32(0x7FFFFFFF);
+			stream << quint64(AlphaVersion);
+		} else {
+			stream << quint32(version);
+		}
+
+		stream << quint32(files.size());
+		cout << "Found " << files.size() << " file" << (files.size() == 1 ? "" : "s") << "..\n";
+		for (QFileInfoList::iterator i = files.begin(); i != files.end(); ++i) {
+			QFileInfo info(*i);
+			QString fullName = info.canonicalFilePath();
+			QString name = fullName.mid(remove.length());
+			cout << name.toUtf8().constData() << " (" << info.size() << ")\n";
+
+			QFile f(fullName);
+			if (!f.open(QIODevice::ReadOnly)) {
+				cout << "Can't open '" << fullName.toUtf8().constData() << "' for read..\n";
+				return -1;
+			}
+			QByteArray inner = f.readAll();
+			stream << name << quint32(inner.size()) << inner;
+#ifndef Q_OS_WIN
+			stream << (QFileInfo(fullName).isExecutable() ? true : false);
+#endif
+		}
+		if (stream.status() != QDataStream::Ok) {
+			cout << "Stream status is bad: " << stream.status() << "\n";
+			return -1;
+		}
+	}
+
+	int32 resultSize = result.size();
+	cout << "Compression start, size: " << resultSize << "\n";
+
+	QByteArray compressed, resultCheck;
+#if defined Q_OS_WIN && !defined PACKER_USE_PACKAGED // use Lzma SDK for win
+	const int32 hSigLen = 128, hShaLen = 20, hPropsLen = LZMA_PROPS_SIZE, hOriginalSizeLen = sizeof(int32), hSize = hSigLen + hShaLen + hPropsLen + hOriginalSizeLen; // header
+
+	compressed.resize(hSize + resultSize + 1024 * 1024); // rsa signature + sha1 + lzma props + max compressed size
+
+	size_t compressedLen = compressed.size() - hSize;
+	size_t outPropsSize = LZMA_PROPS_SIZE;
+	uchar *_dest = (uchar*)(compressed.data() + hSize);
+	size_t *_destLen = &compressedLen;
+	const uchar *_src = (const uchar*)(result.constData());
+	size_t _srcLen = result.size();
+	uchar *_outProps = (uchar*)(compressed.data() + hSigLen + hShaLen);
+	int res = LzmaCompress(_dest, _destLen, _src, _srcLen, _outProps, &outPropsSize, 9, 64 * 1024 * 1024, 4, 0, 2, 273, 2);
+	if (res != SZ_OK) {
+		cout << "Error in compression: " << res << "\n";
+		return -1;
+	}
+	compressed.resize(int(hSize + compressedLen));
+	memcpy(compressed.data() + hSigLen + hShaLen + hPropsLen, &resultSize, hOriginalSizeLen);
+
+	cout << "Compressed to size: " << compressedLen << "\n";
+
+	cout << "Checking uncompressed..\n";
+
+	int32 resultCheckLen;
+	memcpy(&resultCheckLen, compressed.constData() + hSigLen + hShaLen + hPropsLen, hOriginalSizeLen);
+	if (resultCheckLen <= 0 || resultCheckLen > 1024 * 1024 * 1024) {
+		cout << "Bad result len: " << resultCheckLen << "\n";
+		return -1;
+	}
+	resultCheck.resize(resultCheckLen);
+
+	size_t resultLen = resultCheck.size();
+	SizeT srcLen = compressedLen;
+	int uncompressRes = LzmaUncompress((uchar*)resultCheck.data(), &resultLen, (const uchar*)(compressed.constData() + hSize), &srcLen, (const uchar*)(compressed.constData() + hSigLen + hShaLen), LZMA_PROPS_SIZE);
+	if (uncompressRes != SZ_OK) {
+		cout << "Uncompress failed: " << uncompressRes << "\n";
+		return -1;
+	}
+	if (resultLen != size_t(result.size())) {
+		cout << "Uncompress bad size: " << resultLen << ", was: " << result.size() << "\n";
+		return -1;
+	}
+#else // use liblzma for others
+	const int32 hSigLen = 128, hShaLen = 20, hPropsLen = 0, hOriginalSizeLen = sizeof(int32), hSize = hSigLen + hShaLen + hOriginalSizeLen; // header
+
+	compressed.resize(hSize + resultSize + 1024 * 1024); // rsa signature + sha1 + lzma props + max compressed size
+
+	size_t compressedLen = compressed.size() - hSize;
+
+	lzma_stream stream = LZMA_STREAM_INIT;
+
+	int preset = 9 | LZMA_PRESET_EXTREME;
+	lzma_ret ret = lzma_easy_encoder(&stream, preset, LZMA_CHECK_CRC64);
+	if (ret != LZMA_OK) {
+		const char *msg;
+		switch (ret) {
+			case LZMA_MEM_ERROR: msg = "Memory allocation failed"; break;
+			case LZMA_OPTIONS_ERROR: msg = "Specified preset is not supported"; break;
+			case LZMA_UNSUPPORTED_CHECK: msg = "Specified integrity check is not supported"; break;
+			default: msg = "Unknown error, possibly a bug"; break;
+		}
+		cout << "Error initializing the encoder: " << msg << " (error code " << ret << ")\n";
+		return -1;
+	}
+
+	stream.avail_in = resultSize;
+	stream.next_in = (uint8_t*)result.constData();
+	stream.avail_out = compressedLen;
+	stream.next_out = (uint8_t*)(compressed.data() + hSize);
+
+	lzma_ret res = lzma_code(&stream, LZMA_FINISH);
+	compressedLen -= stream.avail_out;
+	lzma_end(&stream);
+	if (res != LZMA_OK && res != LZMA_STREAM_END) {
+		const char *msg;
+		switch (res) {
+			case LZMA_MEM_ERROR: msg = "Memory allocation failed"; break;
+			case LZMA_DATA_ERROR: msg = "File size limits exceeded"; break;
+			default: msg = "Unknown error, possibly a bug"; break;
+		}
+		cout << "Error in compression: " << msg << " (error code " << res << ")\n";
+		return -1;
+	}
+
+	compressed.resize(int(hSize + compressedLen));
+	memcpy(compressed.data() + hSigLen + hShaLen, &resultSize, hOriginalSizeLen);
+
+	cout << "Compressed to size: " << compressedLen << "\n";
+
+	cout << "Checking uncompressed..\n";
+
+	int32 resultCheckLen;
+	memcpy(&resultCheckLen, compressed.constData() + hSigLen + hShaLen, hOriginalSizeLen);
+	if (resultCheckLen <= 0 || resultCheckLen > 1024 * 1024 * 1024) {
+		cout << "Bad result len: " << resultCheckLen << "\n";
+		return -1;
+	}
+	resultCheck.resize(resultCheckLen);
+
+	size_t resultLen = resultCheck.size();
+
+	stream = LZMA_STREAM_INIT;
+
+	ret = lzma_stream_decoder(&stream, UINT64_MAX, LZMA_CONCATENATED);
+	if (ret != LZMA_OK) {
+		const char *msg;
+		switch (ret) {
+			case LZMA_MEM_ERROR: msg = "Memory allocation failed"; break;
+			case LZMA_OPTIONS_ERROR: msg = "Specified preset is not supported"; break;
+			case LZMA_UNSUPPORTED_CHECK: msg = "Specified integrity check is not supported"; break;
+			default: msg = "Unknown error, possibly a bug"; break;
+		}
+		cout << "Error initializing the decoder: " << msg << " (error code " << ret << ")\n";
+		return -1;
+	}
+
+	stream.avail_in = compressedLen;
+	stream.next_in = (uint8_t*)(compressed.constData() + hSize);
+	stream.avail_out = resultLen;
+	stream.next_out = (uint8_t*)resultCheck.data();
+
+	res = lzma_code(&stream, LZMA_FINISH);
+	if (stream.avail_in) {
+		cout << "Error in decompression, " << stream.avail_in << " bytes left in _in of " << compressedLen << " whole.\n";
+		return -1;
+	} else if (stream.avail_out) {
+		cout << "Error in decompression, " << stream.avail_out << " bytes free left in _out of " << resultLen << " whole.\n";
+		return -1;
+	}
+	lzma_end(&stream);
+	if (res != LZMA_OK && res != LZMA_STREAM_END) {
+		const char *msg;
+		switch (res) {
+			case LZMA_MEM_ERROR: msg = "Memory allocation failed"; break;
+			case LZMA_FORMAT_ERROR: msg = "The input data is not in the .xz format"; break;
+			case LZMA_OPTIONS_ERROR: msg = "Unsupported compression options"; break;
+			case LZMA_DATA_ERROR: msg = "Compressed file is corrupt"; break;
+			case LZMA_BUF_ERROR: msg = "Compressed data is truncated or otherwise corrupt"; break;
+			default: msg = "Unknown error, possibly a bug"; break;
+		}
+		cout << "Error in decompression: " << msg << " (error code " << res << ")\n";
+		return -1;
+	}
+#endif
+	if (memcmp(result.constData(), resultCheck.constData(), resultLen)) {
+		cout << "Data differ :(\n";
+		return -1;
+	}
+	/**/
+	result = resultCheck = QByteArray();
+
+	cout << "Counting SHA1 hash..\n";
+
+	uchar sha1Buffer[20];
+	memcpy(compressed.data() + hSigLen, hashSha1(compressed.constData() + hSigLen + hShaLen, uint32(compressedLen + hPropsLen + hOriginalSizeLen), sha1Buffer), hShaLen); // count sha1
+
+	uint32 siglen = 0;
+
+	cout << "Signing..\n";
+	RSA *prKey = [] {
+		const auto bio = makeBIO(
+			const_cast<char*>(
+				(BetaChannel || AlphaVersion)
+					? PrivateBetaKey
+					: PrivateKey),
+			-1);
+		return PEM_read_bio_RSAPrivateKey(bio.get(), 0, 0, 0);
+	}();
+	if (!prKey) {
+		cout << "Could not read RSA private key!\n";
+		return -1;
+	}
+	if (RSA_size(prKey) != hSigLen) {
+		cout << "Bad private key, size: " << RSA_size(prKey) << "\n";
+		RSA_free(prKey);
+		return -1;
+	}
+	if (RSA_sign(NID_sha1, (const uchar*)(compressed.constData() + hSigLen), hShaLen, (uchar*)(compressed.data()), &siglen, prKey) != 1) { // count signature
+		cout << "Signing failed!\n";
+		RSA_free(prKey);
+		return -1;
+	}
+	RSA_free(prKey);
+
+	if (siglen != hSigLen) {
+		cout << "Bad signature length: " << siglen << "\n";
+		return -1;
+	}
+
+	cout << "Checking signature..\n";
+	RSA *pbKey = [] {
+		const auto bio = makeBIO(
+			const_cast<char*>(
+				(BetaChannel || AlphaVersion)
+					? PublicBetaKey
+					: PublicKey),
+			-1);
+		return PEM_read_bio_RSAPublicKey(bio.get(), 0, 0, 0);
+	}();
+	if (!pbKey) {
+		cout << "Could not read RSA public key!\n";
+		return -1;
+	}
+	if (RSA_verify(NID_sha1, (const uchar*)(compressed.constData() + hSigLen), hShaLen, (const uchar*)(compressed.constData()), siglen, pbKey) != 1) { // verify signature
+		RSA_free(pbKey);
+		cout << "Signature verification failed!\n";
+		return -1;
+	}
+	cout << "Signature verified!\n";
+	RSA_free(pbKey);
+#ifdef Q_OS_WIN
+	QString outName((targetwinarm ? QString("tarm64upd%1") : targetwin64 ? QString("tx64upd%1") : QString("tupdate%1")).arg(AlphaVersion ? AlphaVersion : version));
+#elif defined Q_OS_MAC
+	QString outName((targetarmac ? QString("tarmacupd%1") : QString("tmacupd%1")).arg(AlphaVersion ? AlphaVersion : version));
+#else
+	QString outName(QString("tlinuxupd%1").arg(AlphaVersion ? AlphaVersion : version));
+#endif
+	if (AlphaVersion) {
+		outName += "_" + AlphaSignature;
+	}
+	QFile out(outName);
+	if (!out.open(QIODevice::WriteOnly)) {
+		cout << "Can't open '" << outName.toUtf8().constData() << "' for write..\n";
+		return -1;
+	}
+	out.write(compressed);
+	out.close();
+
+	cout << "Update file '" << outName.toUtf8().constData() << "' written successfully!\n";
+
+	return writeAlphaKey();
+}
+
+QString countAlphaVersionSignature(quint64 version) { // duplicated in autoupdater.cpp
+	QByteArray cAlphaPrivateKey(AlphaPrivateKey);
+	if (cAlphaPrivateKey.isEmpty()) {
+		cout << "Error: Trying to count alpha version signature without alpha private key!\n";
+		return QString();
+	}
+
+	QByteArray signedData = (QLatin1String("TelegramBeta_") + QString::number(version, 16).toLower()).toUtf8();
+
+	static const int32 shaSize = 20, keySize = 128;
+
+	uchar sha1Buffer[shaSize];
+	hashSha1(signedData.constData(), signedData.size(), sha1Buffer); // count sha1
+
+	uint32 siglen = 0;
+
+	RSA *prKey = [&] {
+		const auto bio = makeBIO(
+			const_cast<char*>(cAlphaPrivateKey.constData()),
+			-1);
+		return PEM_read_bio_RSAPrivateKey(bio.get(), 0, 0, 0);
+	}();
+	if (!prKey) {
+		cout << "Error: Could not read alpha private key!\n";
+		return QString();
+	}
+	if (RSA_size(prKey) != keySize) {
+		cout << "Error: Bad alpha private key size: " << RSA_size(prKey) << "\n";
+		RSA_free(prKey);
+		return QString();
+	}
+	QByteArray signature;
+	signature.resize(keySize);
+	if (RSA_sign(NID_sha1, (const uchar*)(sha1Buffer), shaSize, (uchar*)(signature.data()), &siglen, prKey) != 1) { // count signature
+		cout << "Error: Counting alpha version signature failed!\n";
+		RSA_free(prKey);
+		return QString();
+	}
+	RSA_free(prKey);
+
+	if (siglen != keySize) {
+		cout << "Error: Bad alpha version signature length: " << siglen << "\n";
+		return QString();
+	}
+
+	signature = signature.toBase64(QByteArray::Base64UrlEncoding | QByteArray::OmitTrailingEquals);
+	signature = signature.replace('-', '8').replace('_', 'B');
+	return QString::fromUtf8(signature.mid(19, 32));
+}

Telegram/SourceFiles/_other/packer.h

@@ -0,0 +1,42 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include <QtCore/QCoreApplication>
+#include <QtCore/QFileInfo>
+#include <QtCore/QFile>
+#include <QtCore/QDir>
+#include <QtCore/QStringList>
+#include <QtCore/QBuffer>
+#include <QtCore/QDataStream>
+
+#include <zlib.h>
+
+extern "C" {
+#include <openssl/bn.h>
+#include <openssl/rsa.h>
+#include <openssl/pem.h>
+#include <openssl/bio.h>
+#include <openssl/err.h>
+#include <openssl/aes.h>
+#include <openssl/evp.h>
+} // extern "C"
+
+#if defined Q_OS_WIN && !defined PACKER_USE_PACKAGED // use Lzma SDK for win
+#include <LzmaLib.h>
+#else
+#include <lzma.h>
+#endif
+
+#include <string>
+#include <iostream>
+#include <exception>
+
+using std::string;
+using std::wstring;
+using std::cout;

Telegram/SourceFiles/_other/startup_task_win.cpp

@@ -0,0 +1,55 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include <windows.h>
+#include <shellapi.h>
+
+#include <array>
+#include <string>
+
+using namespace std;
+
+constexpr auto kMaxPathLong = 32767;
+
+[[nodiscard]] std::wstring ExecutableDirectory() {
+	auto exePath = std::array<WCHAR, kMaxPathLong + 1>{ 0 };
+	const auto exeLength = GetModuleFileName(
+		nullptr,
+		exePath.data(),
+		kMaxPathLong + 1);
+	if (!exeLength || exeLength >= kMaxPathLong + 1) {
+		return {};
+	}
+	const auto exe = std::wstring(exePath.data());
+	const auto last1 = exe.find_last_of('\\');
+	const auto last2 = exe.find_last_of('/');
+	const auto last = std::max(
+		(last1 == std::wstring::npos) ? -1 : int(last1),
+		(last2 == std::wstring::npos) ? -1 : int(last2));
+	if (last < 0) {
+		return {};
+	}
+	return exe.substr(0, last);
+}
+
+int APIENTRY wWinMain(
+		HINSTANCE instance,
+		HINSTANCE prevInstance,
+		LPWSTR cmdParamarg,
+		int cmdShow) {
+	const auto directory = ExecutableDirectory();
+	if (!directory.empty()) {
+		ShellExecute(
+			nullptr,
+			nullptr,
+			(directory + L"\\Telegram.exe").c_str(),
+			L"-autostart",
+			directory.data(),
+			SW_SHOWNORMAL);
+	}
+	return 0;
+}

Telegram/SourceFiles/_other/updater.h

@@ -0,0 +1,37 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include <string>
+
+#include <windows.h>
+#ifdef small
+#undef small
+#endif // small
+
+#pragma warning(push)
+#pragma warning(disable:4091)
+#include <DbgHelp.h>
+#include <ShlObj.h>
+#pragma warning(pop)
+
+#include <Shellapi.h>
+#include <Shlwapi.h>
+
+#include <deque>
+#include <string>
+
+using std::deque;
+using std::wstring;
+
+extern LPTOP_LEVEL_EXCEPTION_FILTER _oldWndExceptionFilter;
+LONG CALLBACK _exceptionFilter(EXCEPTION_POINTERS* pExceptionPointers);
+LPTOP_LEVEL_EXCEPTION_FILTER WINAPI RedirectedSetUnhandledExceptionFilter(_In_opt_ LPTOP_LEVEL_EXCEPTION_FILTER lpTopLevelExceptionFilter);
+
+static int updaterVersion = 1000;
+static const WCHAR *updaterVersionStr = L"0.1.0";

Telegram/SourceFiles/_other/updater_linux.cpp

@@ -0,0 +1,520 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#define _GLIBCXX_USE_CXX11_ABI 0
+#include <cstdio>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <cstdlib>
+#include <unistd.h>
+#include <dirent.h>
+#include <pwd.h>
+#include <string>
+#include <deque>
+#include <vector>
+#include <cstring>
+#include <cerrno>
+#include <algorithm>
+#include <cstdarg>
+#include <ctime>
+#include <iostream>
+
+using std::string;
+using std::deque;
+using std::vector;
+using std::cout;
+
+bool do_mkdir(const char *path) { // from http://stackoverflow.com/questions/675039/how-can-i-create-directory-tree-in-c-linux
+	struct stat statbuf;
+	if (stat(path, &statbuf) != 0) {
+		/* Directory does not exist. EEXIST for race condition */
+		if (mkdir(path, S_IRWXU) != 0 && errno != EEXIST) return false;
+	} else if (!S_ISDIR(statbuf.st_mode)) {
+		errno = ENOTDIR;
+		return false;
+	}
+
+	return true;
+}
+
+bool _debug = false;
+bool writeprotected = false;
+string updaterDir;
+string updaterName;
+string workDir;
+string exeName;
+string exePath;
+string argv0;
+
+FILE *_logFile = 0;
+void openLog() {
+	if (!_debug || _logFile) return;
+
+	if (!do_mkdir((workDir + "DebugLogs").c_str())) {
+		return;
+	}
+
+	time_t timer;
+
+	time(&timer);
+	struct tm *t = localtime(&timer);
+
+	static const int maxFileLen = 65536;
+	char logName[maxFileLen];
+	sprintf(logName, "%sDebugLogs/%04d%02d%02d_%02d%02d%02d_upd.txt", workDir.c_str(),
+		t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
+	_logFile = fopen(logName, "w");
+}
+
+void closeLog() {
+	if (!_logFile) return;
+
+	fclose(_logFile);
+	_logFile = 0;
+}
+
+void writeLog(const char *format, ...) {
+	if (!_logFile) {
+		return;
+	}
+
+	va_list args;
+	va_start(args, format);
+	vfprintf(_logFile, format, args);
+	fprintf(_logFile, "\n");
+	fflush(_logFile);
+	va_end(args);
+}
+
+bool copyFile(const char *from, const char *to) {
+	FILE *ffrom = fopen(from, "rb"), *fto = fopen(to, "wb");
+	if (!ffrom) {
+		if (fto) fclose(fto);
+		return false;
+	}
+	if (!fto) {
+		fclose(ffrom);
+		return false;
+	}
+	static const int BufSize = 65536;
+	char buf[BufSize];
+	while (size_t size = fread(buf, 1, BufSize, ffrom)) {
+		fwrite(buf, 1, size, fto);
+	}
+
+	struct stat fst; // from http://stackoverflow.com/questions/5486774/keeping-fileowner-and-permissions-after-copying-file-in-c
+	//let's say this wont fail since you already worked OK on that fp
+	if (fstat(fileno(ffrom), &fst) != 0) {
+		fclose(ffrom);
+		fclose(fto);
+		return false;
+	}
+	//update to the same uid/gid
+	if (!writeprotected && fchown(fileno(fto), fst.st_uid, fst.st_gid) != 0) {
+		fclose(ffrom);
+		fclose(fto);
+		return false;
+	}
+	//update the permissions
+	if (fchmod(fileno(fto), fst.st_mode) != 0) {
+		fclose(ffrom);
+		fclose(fto);
+		return false;
+	}
+
+	fclose(ffrom);
+	fclose(fto);
+
+	return true;
+}
+
+bool remove_directory(const string &path) { // from http://stackoverflow.com/questions/2256945/removing-a-non-empty-directory-programmatically-in-c-or-c
+	DIR *d = opendir(path.c_str());
+	writeLog("Removing dir '%s'", path.c_str());
+
+	if (!d) {
+		writeLog("Could not open dir '%s'", path.c_str());
+		return (errno == ENOENT);
+	}
+
+	while (struct dirent *p = readdir(d)) {
+		/* Skip the names "." and ".." as we don't want to recurse on them. */
+		if (!strcmp(p->d_name, ".") || !strcmp(p->d_name, "..")) continue;
+
+		string fname = path + '/' + p->d_name;
+		struct stat statbuf;
+		writeLog("Trying to get stat() for '%s'", fname.c_str());
+		if (!stat(fname.c_str(), &statbuf)) {
+			if (S_ISDIR(statbuf.st_mode)) {
+				if (!remove_directory(fname.c_str())) {
+					closedir(d);
+					return false;
+				}
+			} else {
+				writeLog("Unlinking file '%s'", fname.c_str());
+				if (unlink(fname.c_str())) {
+					writeLog("Failed to unlink '%s'", fname.c_str());
+					closedir(d);
+					return false;
+				}
+			}
+		} else {
+			writeLog("Failed to call stat() on '%s'", fname.c_str());
+		}
+	}
+	closedir(d);
+
+	writeLog("Finally removing dir '%s'", path.c_str());
+	return !rmdir(path.c_str());
+}
+
+bool mkpath(const char *path) {
+	int status = 0, pathsize = strlen(path) + 1;
+	char *copypath = new char[pathsize];
+	memcpy(copypath, path, pathsize);
+
+	char *pp = copypath, *sp;
+	while (status == 0 && (sp = strchr(pp, '/')) != 0) {
+		if (sp != pp) {
+			/* Neither root nor double slash in path */
+			*sp = '\0';
+			if (!do_mkdir(copypath)) {
+				delete[] copypath;
+				return false;
+			}
+			*sp = '/';
+		}
+		pp = sp + 1;
+	}
+	delete[] copypath;
+	return do_mkdir(path);
+}
+
+bool equal(string a, string b) {
+	std::transform(a.begin(), a.end(), a.begin(), ::tolower);
+	std::transform(b.begin(), b.end(), b.begin(), ::tolower);
+	return a == b;
+}
+
+void delFolder() {
+	string delPathOld = workDir + "tupdates/ready", delPath = workDir + "tupdates/temp", delFolder = workDir + "tupdates";
+	writeLog("Fully clearing old path '%s'..", delPathOld.c_str());
+	if (!remove_directory(delPathOld)) {
+		writeLog("Failed to clear old path! :( New path was used?..");
+	}
+	writeLog("Fully clearing path '%s'..", delPath.c_str());
+	if (!remove_directory(delPath)) {
+		writeLog("Error: failed to clear path! :(");
+	}
+	rmdir(delFolder.c_str());
+}
+
+bool update() {
+	writeLog("Update started..");
+
+	string updDir = workDir + "tupdates/temp", readyFilePath = workDir + "tupdates/temp/ready", tdataDir = workDir + "tupdates/temp/tdata";
+	{
+		FILE *readyFile = fopen(readyFilePath.c_str(), "rb");
+		if (readyFile) {
+			fclose(readyFile);
+			writeLog("Ready file found! Using new path '%s'..", updDir.c_str());
+		} else {
+			updDir = workDir + "tupdates/ready"; // old
+			tdataDir = workDir + "tupdates/ready/tdata";
+			writeLog("Ready file not found! Using old path '%s'..", updDir.c_str());
+		}
+	}
+
+	deque<string> dirs;
+	dirs.push_back(updDir);
+
+	deque<string> from, to, forcedirs;
+
+	do {
+		string dir = dirs.front();
+		dirs.pop_front();
+
+		string toDir = exePath;
+		if (dir.size() > updDir.size() + 1) {
+			toDir += (dir.substr(updDir.size() + 1) + '/');
+			forcedirs.push_back(toDir);
+			writeLog("Parsing dir '%s' in update tree..", toDir.c_str());
+		}
+
+		DIR *d = opendir(dir.c_str());
+		if (!d) {
+			writeLog("Failed to open dir %s", dir.c_str());
+			return false;
+		}
+
+		while (struct dirent *p = readdir(d)) {
+			/* Skip the names "." and ".." as we don't want to recurse on them. */
+			if (!strcmp(p->d_name, ".") || !strcmp(p->d_name, "..")) continue;
+
+			string fname = dir + '/' + p->d_name;
+			struct stat statbuf;
+			if (fname.substr(0, tdataDir.size()) == tdataDir && (fname.size() <= tdataDir.size() || fname.at(tdataDir.size()) == '/')) {
+				writeLog("Skipping 'tdata' path '%s'", fname.c_str());
+			} else if (!stat(fname.c_str(), &statbuf)) {
+				if (S_ISDIR(statbuf.st_mode)) {
+					dirs.push_back(fname);
+					writeLog("Added dir '%s' in update tree..", fname.c_str());
+				} else {
+					string tofname = exePath + fname.substr(updDir.size() + 1);
+					if (equal(tofname, updaterName)) { // bad update - has Updater - delete all dir
+						writeLog("Error: bad update, has Updater! '%s' equal '%s'", tofname.c_str(), updaterName.c_str());
+						delFolder();
+						return false;
+					} else if (equal(tofname, exePath + "Telegram") && exeName != "Telegram") {
+						string fullBinaryPath = exePath + exeName;
+						writeLog("Target binary found: '%s', changing to '%s'", tofname.c_str(), fullBinaryPath.c_str());
+						tofname = fullBinaryPath;
+					}
+					if (fname == readyFilePath) {
+						writeLog("Skipped ready file '%s'", fname.c_str());
+					} else {
+						from.push_back(fname);
+						to.push_back(tofname);
+						writeLog("Added file '%s' to be copied to '%s'", fname.c_str(), tofname.c_str());
+					}
+				}
+			} else {
+				writeLog("Could not get stat() for file %s", fname.c_str());
+			}
+		}
+		closedir(d);
+	} while (!dirs.empty());
+
+	for (size_t i = 0; i < forcedirs.size(); ++i) {
+		string forcedir = forcedirs[i];
+		writeLog("Forcing dir '%s'..", forcedir.c_str());
+		if (!forcedir.empty() && !mkpath(forcedir.c_str())) {
+			writeLog("Error: failed to create dir '%s'..", forcedir.c_str());
+			delFolder();
+			return false;
+		}
+	}
+
+	for (size_t i = 0; i < from.size(); ++i) {
+		string fname = from[i], tofname = to[i];
+
+		// it is necessary to remove the old file to not to get an error if appimage file is used by fuse
+		struct stat statbuf;
+		writeLog("Trying to get stat() for '%s'", tofname.c_str());
+		if (!stat(tofname.c_str(), &statbuf)) {
+			if (S_ISDIR(statbuf.st_mode)) {
+				writeLog("Fully clearing path '%s'..", tofname.c_str());
+				if (!remove_directory(tofname.c_str())) {
+					writeLog("Error: failed to clear path '%s'", tofname.c_str());
+					delFolder();
+					return false;
+				}
+			} else {
+				writeLog("Unlinking file '%s'", tofname.c_str());
+				if (unlink(tofname.c_str())) {
+					writeLog("Error: failed to unlink '%s'", tofname.c_str());
+					delFolder();
+					return false;
+				}
+			}
+		}
+
+		writeLog("Copying file '%s' to '%s'..", fname.c_str(), tofname.c_str());
+		int copyTries = 0, triesLimit = 30;
+		do {
+			if (!copyFile(fname.c_str(), tofname.c_str())) {
+				++copyTries;
+				usleep(100000);
+			} else {
+				break;
+			}
+		} while (copyTries < triesLimit);
+		if (copyTries == triesLimit) {
+			writeLog("Error: failed to copy, asking to retry..");
+			delFolder();
+			return false;
+		}
+	}
+
+	writeLog("Update succeed! Clearing folder..");
+	delFolder();
+	return true;
+}
+
+string CurrentExecutablePath(int argc, char *argv[]) {
+	constexpr auto kMaxPath = 1024;
+	char result[kMaxPath] = { 0 };
+	auto count = readlink("/proc/self/exe", result, kMaxPath);
+	if (count > 0) {
+		return string(result);
+	}
+
+	// Fallback to the first command line argument.
+	return argc ? string(argv[0]) : string();
+}
+
+int main(int argc, char *argv[]) {
+	bool needupdate = true;
+	bool autostart = false;
+	bool debug = false;
+	bool tosettings = false;
+	bool startintray = false;
+	bool customWorkingDir = false;
+	bool justUpdate = false;
+
+	char *key = 0;
+	char *workdir = 0;
+	for (int i = 1; i < argc; ++i) {
+		if (equal(argv[i], "-noupdate")) {
+			needupdate = false;
+		} else if (equal(argv[i], "-autostart")) {
+			autostart = true;
+		} else if (equal(argv[i], "-debug")) {
+			debug = _debug = true;
+		} else if (equal(argv[i], "-startintray")) {
+			startintray = true;
+		} else if (equal(argv[i], "-tosettings")) {
+			tosettings = true;
+		} else if (equal(argv[i], "-workdir_custom")) {
+			customWorkingDir = true;
+		} else if (equal(argv[i], "-writeprotected")) {
+			writeprotected = true;
+			justUpdate = true;
+		} else if (equal(argv[i], "-justupdate")) {
+			justUpdate = true;
+		} else if (equal(argv[i], "-key") && ++i < argc) {
+			key = argv[i];
+		} else if (equal(argv[i], "-workpath") && ++i < argc) {
+			workDir = workdir = argv[i];
+		} else if (equal(argv[i], "-exename") && ++i < argc) {
+			exeName = argv[i];
+		} else if (equal(argv[i], "-exepath") && ++i < argc) {
+			exePath = argv[i];
+		} else if (equal(argv[i], "-argv0") && ++i < argc) {
+			argv0 = argv[i];
+		}
+	}
+	if (exeName.empty() || exeName.find('/') != string::npos) {
+		exeName = "Telegram";
+	}
+	openLog();
+
+	writeLog("Updater started, new argments formatting..");
+	for (int i = 0; i < argc; ++i) {
+		writeLog("Argument: '%s'", argv[i]);
+	}
+	if (needupdate) writeLog("Need to update!");
+	if (autostart) writeLog("From autostart!");
+	if (writeprotected) writeLog("Write Protected folder!");
+
+	updaterName = CurrentExecutablePath(argc, argv);
+	writeLog("Updater binary full path is: %s", updaterName.c_str());
+	if (exePath.empty()) {
+		writeLog("Executable path is not specified :(");
+	} else {
+		writeLog("Executable path: %s", exePath.c_str());
+	}
+	if (updaterName.size() >= 7) {
+		if (equal(updaterName.substr(updaterName.size() - 7), "Updater")) {
+			updaterDir = updaterName.substr(0, updaterName.size() - 7);
+			writeLog("Updater binary dir is: %s", updaterDir.c_str());
+			if (exePath.empty()) {
+				exePath = updaterDir;
+				writeLog("Using updater binary dir.", exePath.c_str());
+			}
+			if (needupdate) {
+				if (workDir.empty()) { // old app launched, update prepared in tupdates/ready (not in tupdates/temp)
+					customWorkingDir = false;
+
+					writeLog("No workdir, trying to figure it out");
+					struct passwd *pw = getpwuid(getuid());
+					if (pw && pw->pw_dir && strlen(pw->pw_dir)) {
+						string tryDir = pw->pw_dir + string("/.TelegramDesktop/");
+						struct stat statbuf;
+						writeLog("Trying to use '%s' as workDir, getting stat() for tupdates/ready", tryDir.c_str());
+						if (!stat((tryDir + "tupdates/ready").c_str(), &statbuf)) {
+							writeLog("Stat got");
+							if (S_ISDIR(statbuf.st_mode)) {
+								writeLog("It is directory, using home work dir");
+								workDir = tryDir;
+							}
+						}
+					}
+					if (workDir.empty()) {
+						workDir = exePath;
+
+						struct stat statbuf;
+						writeLog("Trying to use current as workDir, getting stat() for tupdates/ready");
+						if (!stat("tupdates/ready", &statbuf)) {
+							writeLog("Stat got");
+							if (S_ISDIR(statbuf.st_mode)) {
+								writeLog("It is directory, using current dir");
+								workDir = string();
+							}
+						}
+					}
+				} else {
+					writeLog("Passed workpath is '%s'", workDir.c_str());
+				}
+				update();
+			}
+		} else {
+			writeLog("Error: bad exe name!");
+		}
+	} else {
+		writeLog("Error: short exe name!");
+	}
+
+	// let the parent launch instead
+	if (justUpdate) {
+		writeLog("Closing log and quitting..");
+	} else {
+		const auto fullBinaryPath = exePath + exeName;
+
+		auto values = vector<string>();
+		const auto push = [&](string arg) {
+			// Force null-terminated .data() call result.
+			values.push_back(arg + char(0));
+		};
+		push(!argv0.empty() ? argv0 : fullBinaryPath);
+		push("-noupdate");
+		if (autostart) push("-autostart");
+		if (debug) push("-debug");
+		if (startintray) push("-startintray");
+		if (tosettings) push("-tosettings");
+		if (key) {
+			push("-key");
+			push(key);
+		}
+		if (customWorkingDir && workdir) {
+			push("-workdir");
+			push(workdir);
+		}
+
+		auto args = vector<char*>();
+		for (auto &arg : values) {
+			args.push_back(arg.data());
+		}
+		args.push_back(nullptr);
+
+		pid_t pid = fork();
+		switch (pid) {
+		case -1:
+			writeLog("fork() failed!");
+			return 1;
+		case 0:
+			execv(fullBinaryPath.c_str(), args.data());
+			return 1;
+		}
+
+		writeLog("Executed Telegram, closing log and quitting..");
+	}
+
+	closeLog();
+
+	return 0;
+}

Telegram/SourceFiles/_other/updater_osx.m

@@ -0,0 +1,285 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#import <Cocoa/Cocoa.h>
+#include <sys/xattr.h>
+
+NSString *appName = @"Telegram.app";
+NSString *appDir = nil;
+NSString *workDir = nil;
+
+#ifdef _DEBUG
+BOOL _debug = YES;
+#else
+BOOL _debug = NO;
+#endif
+
+NSFileHandle *_logFile = nil;
+void openLog() {
+	if (!_debug || _logFile) return;
+	NSString *logDir = [workDir stringByAppendingString:@"DebugLogs"];
+	if (![[NSFileManager defaultManager] createDirectoryAtPath:logDir withIntermediateDirectories:YES attributes:nil error:nil]) {
+		return;
+	}
+
+	NSDateFormatter *fmt = [[NSDateFormatter alloc] init];
+	[fmt setLocale:[NSLocale localeWithLocaleIdentifier:@"en_US_POSIX"]];
+	[fmt setDateFormat:@"'DebugLogs/'yyyyMMdd'_'HHmmss'_update.txt'"];
+	NSString *logPath = [workDir stringByAppendingString:[fmt stringFromDate:[NSDate date]]];
+	[[NSFileManager defaultManager] createFileAtPath:logPath contents:nil attributes:nil];
+	_logFile = [NSFileHandle fileHandleForWritingAtPath:logPath];
+}
+
+void closeLog() {
+	if (!_logFile) return;
+
+	[_logFile closeFile];
+}
+
+void writeLog(NSString *msg) {
+	if (!_logFile) return;
+
+	[_logFile writeData:[[msg stringByAppendingString:@"\n"] dataUsingEncoding:NSUTF8StringEncoding]];
+	[_logFile synchronizeFile];
+}
+
+void RemoveQuarantineAttribute(NSString *path) {
+	const char *kQuarantineAttribute = "com.apple.quarantine";
+
+	writeLog([@"Removing quarantine: " stringByAppendingString:path]);
+	removexattr([path fileSystemRepresentation], kQuarantineAttribute, 0);
+}
+
+void RemoveQuarantineFromBundle(NSString *path) {
+	RemoveQuarantineAttribute(path);
+	RemoveQuarantineAttribute([path stringByAppendingString:@"/Contents/MacOS/Telegram"]);
+	RemoveQuarantineAttribute([path stringByAppendingString:@"/Contents/Helpers/crashpad_handler"]);
+	RemoveQuarantineAttribute([path stringByAppendingString:@"/Contents/Frameworks/Updater"]);
+}
+
+void delFolder() {
+	writeLog([@"Fully clearing old path: " stringByAppendingString:[workDir stringByAppendingString:@"tupdates/ready"]]);
+	if (![[NSFileManager defaultManager] removeItemAtPath:[workDir stringByAppendingString:@"tupdates/ready"] error:nil]) {
+		writeLog(@"Failed to clear old path! :( New path was used?..");
+	}
+	writeLog([@"Fully clearing new path: " stringByAppendingString:[workDir stringByAppendingString:@"tupdates/temp"]]);
+	if (![[NSFileManager defaultManager] removeItemAtPath:[workDir stringByAppendingString:@"tupdates/temp"] error:nil]) {
+		writeLog(@"Error: failed to clear new path! :(");
+	}
+	rmdir([[workDir stringByAppendingString:@"tupdates"] fileSystemRepresentation]);
+}
+
+int main(int argc, const char * argv[]) {
+	NSString *path = [[NSBundle mainBundle] bundlePath];
+	if (!path) {
+		return -1;
+	}
+	NSRange range = [path rangeOfString:@".app/" options:NSBackwardsSearch];
+	if (range.location == NSNotFound) {
+		return -1;
+	}
+	path = [path substringToIndex:range.location > 0 ? range.location : 0];
+
+	range = [path rangeOfString:@"/" options:NSBackwardsSearch];
+	NSString *appRealName = (range.location == NSNotFound) ? path : [path substringFromIndex:range.location + 1];
+	appRealName = [[NSArray arrayWithObjects:appRealName, @".app", nil] componentsJoinedByString:@""];
+	appDir = (range.location == NSNotFound) ? @"" : [path substringToIndex:range.location + 1];
+	NSString *appDirFull = [appDir stringByAppendingString:appRealName];
+
+	openLog();
+	pid_t procId = 0;
+	BOOL update = YES, toSettings = NO, autoStart = NO, startInTray = NO;
+	BOOL customWorkingDir = NO;
+	NSString *key = nil;
+	for (int i = 0; i < argc; ++i) {
+		if ([@"-workpath" isEqualToString:[NSString stringWithUTF8String:argv[i]]]) {
+			if (++i < argc) {
+				workDir = [NSString stringWithUTF8String:argv[i]];
+			}
+		} else if ([@"-procid" isEqualToString:[NSString stringWithUTF8String:argv[i]]]) {
+			if (++i < argc) {
+				NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
+				[formatter setNumberStyle:NSNumberFormatterDecimalStyle];
+				procId = [[formatter numberFromString:[NSString stringWithUTF8String:argv[i]]] intValue];
+			}
+		} else if ([@"-noupdate" isEqualToString:[NSString stringWithUTF8String:argv[i]]]) {
+			update = NO;
+		} else if ([@"-tosettings" isEqualToString:[NSString stringWithUTF8String:argv[i]]]) {
+			toSettings = YES;
+		} else if ([@"-autostart" isEqualToString:[NSString stringWithUTF8String:argv[i]]]) {
+			autoStart = YES;
+		} else if ([@"-debug" isEqualToString:[NSString stringWithUTF8String:argv[i]]]) {
+			_debug = YES;
+		} else if ([@"-startintray" isEqualToString:[NSString stringWithUTF8String:argv[i]]]) {
+			startInTray = YES;
+		} else if ([@"-workdir_custom" isEqualToString:[NSString stringWithUTF8String:argv[i]]]) {
+			customWorkingDir = YES;
+		} else if ([@"-key" isEqualToString:[NSString stringWithUTF8String:argv[i]]]) {
+			if (++i < argc) key = [NSString stringWithUTF8String:argv[i]];
+		}
+	}
+	if (!workDir) {
+		workDir = appDir;
+		customWorkingDir = NO;
+	}
+	openLog();
+	NSMutableArray *argsArr = [[NSMutableArray alloc] initWithCapacity:argc];
+	for (int i = 0; i < argc; ++i) {
+		[argsArr addObject:[NSString stringWithUTF8String:argv[i]]];
+	}
+	writeLog([[NSArray arrayWithObjects:@"Arguments: '", [argsArr componentsJoinedByString:@"' '"], @"'..", nil] componentsJoinedByString:@""]);
+	if (key) writeLog([@"Key: " stringByAppendingString:key]);
+	if (toSettings) writeLog(@"To Settings!");
+
+	if (procId) {
+		NSRunningApplication *app = [NSRunningApplication runningApplicationWithProcessIdentifier:procId];
+		for (int i = 0; i < 5 && app != nil && ![app isTerminated]; ++i) {
+			usleep(200000);
+			app = [NSRunningApplication runningApplicationWithProcessIdentifier:procId];
+		}
+		if (app) [app forceTerminate];
+		app = [NSRunningApplication runningApplicationWithProcessIdentifier:procId];
+		for (int i = 0; i < 5 && app != nil && ![app isTerminated]; ++i) {
+			usleep(200000);
+			app = [NSRunningApplication runningApplicationWithProcessIdentifier:procId];
+		}
+	}
+
+	if (update) {
+		NSFileManager *fileManager = [NSFileManager defaultManager];
+		NSString *readyFilePath = [workDir stringByAppendingString:@"tupdates/temp/ready"];
+		NSString *srcDir = [workDir stringByAppendingString:@"tupdates/temp/"], *srcEnum = [workDir stringByAppendingString:@"tupdates/temp"];
+		if ([fileManager fileExistsAtPath:readyFilePath]) {
+			writeLog([@"Ready file found! Using new path: " stringByAppendingString: srcEnum]);
+		} else {
+			srcDir = [workDir stringByAppendingString:@"tupdates/ready/"]; // old
+			srcEnum = [workDir stringByAppendingString:@"tupdates/ready"];
+			writeLog([@"Ready file not found! Using old path: " stringByAppendingString: srcEnum]);
+		}
+
+		writeLog([@"Starting update files iteration, path: " stringByAppendingString: srcEnum]);
+
+		// Take the Updater (this currently running binary) from the place where it was placed by Telegram
+		// and copy it to the folder with the new version of the app (ready),
+		// so it won't be deleted when we will clear the "Telegram.app/Contents" folder.
+		NSString *oldVersionUpdaterPath = [appDirFull stringByAppendingString: @"/Contents/Frameworks/Updater" ];
+		NSString *newVersionUpdaterPath = [srcEnum stringByAppendingString:[[NSArray arrayWithObjects:@"/", appName, @"/Contents/Frameworks/Updater", nil] componentsJoinedByString:@""]];
+		writeLog([[NSArray arrayWithObjects: @"Copying Updater from old path ", oldVersionUpdaterPath, @" to new path ", newVersionUpdaterPath, nil] componentsJoinedByString:@""]);
+		if (![fileManager fileExistsAtPath:newVersionUpdaterPath]) {
+			if (![fileManager copyItemAtPath:oldVersionUpdaterPath toPath:newVersionUpdaterPath error:nil]) {
+				writeLog([[NSArray arrayWithObjects: @"Failed to copy file from ", oldVersionUpdaterPath, @" to ", newVersionUpdaterPath, nil] componentsJoinedByString:@""]);
+				delFolder();
+				return -1;
+			}
+		}
+
+
+		NSString *contentsPath = [appDirFull stringByAppendingString: @"/Contents"];
+		writeLog([[NSArray arrayWithObjects: @"Clearing dir ", contentsPath, nil] componentsJoinedByString:@""]);
+		if (![fileManager removeItemAtPath:contentsPath error:nil]) {
+			writeLog([@"Failed to clear path for directory " stringByAppendingString:contentsPath]);
+			delFolder();
+			return -1;
+		}
+
+		NSArray *keys = [NSArray arrayWithObject:NSURLIsDirectoryKey];
+		NSDirectoryEnumerator *enumerator = [fileManager
+											 enumeratorAtURL:[NSURL fileURLWithPath:srcEnum]
+											 includingPropertiesForKeys:keys
+											 options:0
+											 errorHandler:^(NSURL *url, NSError *error) {
+												 writeLog([[[@"Error in enumerating " stringByAppendingString:[url absoluteString]] stringByAppendingString: @" error is: "] stringByAppendingString: [error description]]);
+												 return NO;
+											 }];
+		for (NSURL *url in enumerator) {
+			NSString *srcPath = [url path];
+			writeLog([@"Handling file " stringByAppendingString:srcPath]);
+			NSRange r = [srcPath rangeOfString:srcDir];
+			if (r.location != 0) {
+				writeLog([@"Bad file found, no base path " stringByAppendingString:srcPath]);
+				delFolder();
+				break;
+			}
+			NSString *pathPart = [srcPath substringFromIndex:r.length];
+			r = [pathPart rangeOfString:appName];
+			if (r.location != 0) {
+				writeLog([@"Skipping not app file " stringByAppendingString:srcPath]);
+				continue;
+			}
+			NSString *dstPath = [appDirFull stringByAppendingString:[pathPart substringFromIndex:r.length]];
+			NSError *error;
+			NSNumber *isDirectory = nil;
+			if (![url getResourceValue:&isDirectory forKey:NSURLIsDirectoryKey error:&error]) {
+				writeLog([@"Failed to get IsDirectory for file " stringByAppendingString:[url path]]);
+				delFolder();
+				break;
+			}
+			if ([isDirectory boolValue]) {
+				writeLog([[NSArray arrayWithObjects: @"Copying dir ", srcPath, @" to ", dstPath, nil] componentsJoinedByString:@""]);
+				if (![fileManager createDirectoryAtPath:dstPath withIntermediateDirectories:YES attributes:nil error:nil]) {
+					writeLog([@"Failed to force path for directory " stringByAppendingString:dstPath]);
+					delFolder();
+					break;
+				}
+			} else if ([srcPath isEqualToString:readyFilePath]) {
+				writeLog([[NSArray arrayWithObjects: @"Skipping ready file ", srcPath, nil] componentsJoinedByString:@""]);
+			} else if ([fileManager fileExistsAtPath:dstPath]) {
+				if (![[NSData dataWithContentsOfFile:srcPath] writeToFile:dstPath atomically:YES]) {
+					writeLog([@"Failed to edit file " stringByAppendingString:dstPath]);
+					delFolder();
+					break;
+				}
+			} else {
+				if (![fileManager copyItemAtPath:srcPath toPath:dstPath error:nil]) {
+					writeLog([@"Failed to copy file to " stringByAppendingString:dstPath]);
+					delFolder();
+					break;
+				}
+			}
+		}
+		delFolder();
+	}
+
+	NSString *appPath = [[NSArray arrayWithObjects:appDir, appRealName, nil] componentsJoinedByString:@""];
+
+	RemoveQuarantineFromBundle(appPath);
+
+	NSMutableArray *args = [[NSMutableArray alloc] initWithObjects: @"-noupdate", nil];
+	if (toSettings) [args addObject:@"-tosettings"];
+	if (_debug) [args addObject:@"-debug"];
+	if (startInTray) [args addObject:@"-startintray"];
+	if (autoStart) [args addObject:@"-autostart"];
+	if (key) {
+		[args addObject:@"-key"];
+		[args addObject:key];
+	}
+	if (customWorkingDir) {
+		[args addObject:@"-workdir"];
+		[args addObject:workDir];
+	}
+	writeLog([[NSArray arrayWithObjects:@"Running application '", appPath, @"' with args '", [args componentsJoinedByString:@"' '"], @"'..", nil] componentsJoinedByString:@""]);
+
+	for (int i = 0; i < 5; ++i) {
+		NSError *error = nil;
+		NSRunningApplication *result = [[NSWorkspace sharedWorkspace]
+					launchApplicationAtURL:[NSURL fileURLWithPath:appPath]
+					options:NSWorkspaceLaunchDefault
+					configuration:[NSDictionary
+								   dictionaryWithObject:args
+								   forKey:NSWorkspaceLaunchConfigurationArguments]
+					error:&error];
+		if (result) {
+			closeLog();
+			return 0;
+		}
+		writeLog([[NSString stringWithFormat:@"Could not run application, error %ld: ", (long)[error code]] stringByAppendingString: error ? [error localizedDescription] : @"(nil)"]);
+		usleep(200000);
+	}
+	closeLog();
+	return -1;
+}
+

Telegram/SourceFiles/_other/updater_win.cpp

@@ -0,0 +1,604 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "updater.h"
+
+#include "base/platform/win/base_windows_safe_library.h"
+
+bool _debug = false;
+
+wstring updaterName, updaterDir, updateTo, exeName, customWorkingDir, customKeyFile;
+
+bool equal(const wstring &a, const wstring &b) {
+	return !_wcsicmp(a.c_str(), b.c_str());
+}
+
+void updateError(const WCHAR *msg, DWORD errorCode) {
+	WCHAR errMsg[2048];
+	LPWSTR errorTextFormatted = nullptr;
+	auto formatFlags = FORMAT_MESSAGE_FROM_SYSTEM
+		| FORMAT_MESSAGE_ALLOCATE_BUFFER
+		| FORMAT_MESSAGE_IGNORE_INSERTS;
+	FormatMessage(
+		formatFlags,
+		NULL,
+		errorCode,
+		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+		(LPWSTR)&errorTextFormatted,
+		0,
+		0);
+	auto errorText = errorTextFormatted
+		? errorTextFormatted
+		: L"(Unknown error)";
+	wsprintf(errMsg, L"%s, error code: %d\nError message: %s", msg, errorCode, errorText);
+
+	MessageBox(0, errMsg, L"Update error!", MB_ICONERROR);
+
+	LocalFree(errorTextFormatted);
+}
+
+HANDLE _logFile = 0;
+void openLog() {
+	if (!_debug || _logFile) return;
+	wstring logPath = L"DebugLogs";
+	if (!CreateDirectory(logPath.c_str(), NULL)) {
+		DWORD errorCode = GetLastError();
+		if (errorCode && errorCode != ERROR_ALREADY_EXISTS) {
+			updateError(L"Failed to create log directory", errorCode);
+			return;
+		}
+	}
+
+	SYSTEMTIME stLocalTime;
+
+	GetLocalTime(&stLocalTime);
+
+	static const int maxFileLen = MAX_PATH * 10;
+	WCHAR logName[maxFileLen];
+	wsprintf(logName, L"DebugLogs\\%04d%02d%02d_%02d%02d%02d_upd.txt",
+		stLocalTime.wYear, stLocalTime.wMonth, stLocalTime.wDay,
+		stLocalTime.wHour, stLocalTime.wMinute, stLocalTime.wSecond);
+	_logFile = CreateFile(logName, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
+	if (_logFile == INVALID_HANDLE_VALUE) { // :(
+		updateError(L"Failed to create log file", GetLastError());
+		_logFile = 0;
+		return;
+	}
+}
+
+void closeLog() {
+	if (!_logFile) return;
+
+	CloseHandle(_logFile);
+	_logFile = 0;
+}
+
+void writeLog(const wstring &msg) {
+	if (!_logFile) return;
+
+	wstring full = msg + L'\n';
+	DWORD written = 0;
+	BOOL result = WriteFile(_logFile, full.c_str(), full.size() * sizeof(wchar_t), &written, 0);
+	if (!result) {
+		updateError((L"Failed to write log entry '" + msg + L"'").c_str(), GetLastError());
+		closeLog();
+		return;
+	}
+	BOOL flushr = FlushFileBuffers(_logFile);
+	if (!flushr) {
+		updateError((L"Failed to flush log on entry '" + msg + L"'").c_str(), GetLastError());
+		closeLog();
+		return;
+	}
+}
+
+void fullClearPath(const wstring &dir) {
+	WCHAR path[4096];
+	memcpy(path, dir.c_str(), (dir.size() + 1) * sizeof(WCHAR));
+	path[dir.size() + 1] = 0;
+	writeLog(L"Fully clearing path '" + dir + L"'..");
+	SHFILEOPSTRUCT file_op = {
+		NULL,
+		FO_DELETE,
+		path,
+		L"",
+		FOF_NOCONFIRMATION |
+		FOF_NOERRORUI |
+		FOF_SILENT,
+		false,
+		0,
+		L""
+	};
+	int res = SHFileOperation(&file_op);
+	if (res) writeLog(L"Error: failed to clear path! :(");
+}
+
+void delFolder() {
+	wstring delPathOld = L"tupdates\\ready", delPath = L"tupdates\\temp", delFolder = L"tupdates";
+	fullClearPath(delPathOld);
+	fullClearPath(delPath);
+	RemoveDirectory(delFolder.c_str());
+}
+
+DWORD versionNum = 0, versionLen = 0, readLen = 0;
+WCHAR versionStr[32] = { 0 };
+
+bool update() {
+	writeLog(L"Update started..");
+
+	wstring updDir = L"tupdates\\temp", readyFilePath = L"tupdates\\temp\\ready", tdataDir = L"tupdates\\temp\\tdata";
+	{
+		HANDLE readyFile = CreateFile(readyFilePath.c_str(), GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
+		if (readyFile != INVALID_HANDLE_VALUE) {
+			CloseHandle(readyFile);
+		} else {
+			updDir = L"tupdates\\ready"; // old
+			tdataDir = L"tupdates\\ready\\tdata";
+		}
+	}
+
+	HANDLE versionFile = CreateFile((tdataDir + L"\\version").c_str(), GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
+	if (versionFile != INVALID_HANDLE_VALUE) {
+		if (!ReadFile(versionFile, &versionNum, sizeof(DWORD), &readLen, NULL) || readLen != sizeof(DWORD)) {
+			versionNum = 0;
+		} else {
+			if (versionNum == 0x7FFFFFFF) { // alpha version
+
+			} else if (!ReadFile(versionFile, &versionLen, sizeof(DWORD), &readLen, NULL) || readLen != sizeof(DWORD) || versionLen > 63) {
+				versionNum = 0;
+			} else if (!ReadFile(versionFile, versionStr, versionLen, &readLen, NULL) || readLen != versionLen) {
+				versionNum = 0;
+			}
+		}
+		CloseHandle(versionFile);
+		writeLog(L"Version file read.");
+	} else {
+		writeLog(L"Could not open version file to update registry :(");
+	}
+
+	deque<wstring> dirs;
+	dirs.push_back(updDir);
+
+	deque<wstring> from, to, forcedirs;
+
+	do {
+		wstring dir = dirs.front();
+		dirs.pop_front();
+
+		wstring toDir = updateTo;
+		if (dir.size() > updDir.size() + 1) {
+			toDir += (dir.substr(updDir.size() + 1) + L"\\");
+			forcedirs.push_back(toDir);
+			writeLog(L"Parsing dir '" + toDir + L"' in update tree..");
+		}
+
+		WIN32_FIND_DATA findData;
+		HANDLE findHandle = FindFirstFileEx((dir + L"\\*").c_str(), FindExInfoStandard, &findData, FindExSearchNameMatch, 0, 0);
+		if (findHandle == INVALID_HANDLE_VALUE) {
+			DWORD errorCode = GetLastError();
+			if (errorCode == ERROR_PATH_NOT_FOUND) { // no update is ready
+				return true;
+			}
+			writeLog(L"Error: failed to find update files :(");
+			updateError(L"Failed to find update files", errorCode);
+			delFolder();
+			return false;
+		}
+
+		do {
+			wstring fname = dir + L"\\" + findData.cFileName;
+			if (fname.substr(0, tdataDir.size()) == tdataDir && (fname.size() <= tdataDir.size() || fname.at(tdataDir.size()) == '/')) {
+				writeLog(L"Skipped 'tdata' path '" + fname + L"'");
+			} else if (findData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
+				if (findData.cFileName != wstring(L".") && findData.cFileName != wstring(L"..")) {
+					dirs.push_back(fname);
+					writeLog(L"Added dir '" + fname + L"' in update tree..");
+				}
+			} else {
+				wstring tofname = updateTo + fname.substr(updDir.size() + 1);
+				if (equal(tofname, updaterName)) { // bad update - has Updater.exe - delete all dir
+					writeLog(L"Error: bad update, has Updater.exe! '" + tofname + L"' equal '" + updaterName + L"'");
+					delFolder();
+					return false;
+				} else if (equal(tofname, updateTo + L"Telegram.exe") && exeName != L"Telegram.exe") {
+					wstring fullBinaryPath = updateTo + exeName;
+					writeLog(L"Target binary found: '" + tofname + L"', changing to '" + fullBinaryPath + L"'");
+					tofname = fullBinaryPath;
+				}
+				if (equal(fname, readyFilePath)) {
+					writeLog(L"Skipped ready file '" + fname + L"'");
+				} else {
+					from.push_back(fname);
+					to.push_back(tofname);
+					writeLog(L"Added file '" + fname + L"' to be copied to '" + tofname + L"'");
+				}
+			}
+		} while (FindNextFile(findHandle, &findData));
+		DWORD errorCode = GetLastError();
+		if (errorCode && errorCode != ERROR_NO_MORE_FILES) { // everything is found
+			writeLog(L"Error: failed to find next update file :(");
+			updateError(L"Failed to find next update file", errorCode);
+			delFolder();
+			return false;
+		}
+		FindClose(findHandle);
+	} while (!dirs.empty());
+
+	for (size_t i = 0; i < forcedirs.size(); ++i) {
+		wstring forcedir = forcedirs[i];
+		writeLog(L"Forcing dir '" + forcedir + L"'..");
+		if (!forcedir.empty() && !CreateDirectory(forcedir.c_str(), NULL)) {
+			DWORD errorCode = GetLastError();
+			if (errorCode && errorCode != ERROR_ALREADY_EXISTS) {
+				writeLog(L"Error: failed to create dir '" + forcedir + L"'..");
+				updateError(L"Failed to create directory", errorCode);
+				delFolder();
+				return false;
+			}
+			writeLog(L"Already exists!");
+		}
+	}
+
+	for (size_t i = 0; i < from.size(); ++i) {
+		wstring fname = from[i], tofname = to[i];
+		BOOL copyResult;
+		do {
+			writeLog(L"Copying file '" + fname + L"' to '" + tofname + L"'..");
+			int copyTries = 0;
+			do {
+				copyResult = CopyFile(fname.c_str(), tofname.c_str(), FALSE);
+				if (!copyResult) {
+					++copyTries;
+					Sleep(100);
+				} else {
+					break;
+				}
+			} while (copyTries < 100);
+			if (!copyResult) {
+				writeLog(L"Error: failed to copy, asking to retry..");
+				WCHAR errMsg[2048];
+				wsprintf(errMsg, L"Failed to update Telegram :(\n%s is not accessible.", tofname.c_str());
+				if (MessageBox(0, errMsg, L"Update error!", MB_ICONERROR | MB_RETRYCANCEL) != IDRETRY) {
+					delFolder();
+					return false;
+				}
+			}
+		} while (!copyResult);
+	}
+
+	writeLog(L"Update succeed! Clearing folder..");
+	delFolder();
+	return true;
+}
+
+void updateRegistry() {
+	if (versionNum && versionNum != 0x7FFFFFFF) {
+		writeLog(L"Updating registry..");
+		versionStr[versionLen / 2] = 0;
+		HKEY rkey;
+		LSTATUS status = RegOpenKeyEx(HKEY_CURRENT_USER, L"Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\{53F49750-6209-4FBF-9CA8-7A333C87D1ED}_is1", 0, KEY_QUERY_VALUE | KEY_SET_VALUE, &rkey);
+		if (status == ERROR_SUCCESS) {
+			writeLog(L"Checking registry install location..");
+			static const int bufSize = 4096;
+			DWORD locationType, locationSize = bufSize * 2;
+			WCHAR locationStr[bufSize], exp[bufSize];
+			if (RegQueryValueEx(rkey, L"InstallLocation", 0, &locationType, (BYTE*)locationStr, &locationSize) == ERROR_SUCCESS) {
+				locationSize /= 2;
+				if (locationStr[locationSize - 1]) {
+					locationStr[locationSize++] = 0;
+				}
+				if (locationType == REG_EXPAND_SZ) {
+					DWORD copy = ExpandEnvironmentStrings(locationStr, exp, bufSize);
+					if (copy <= bufSize) {
+						memcpy(locationStr, exp, copy * sizeof(WCHAR));
+					}
+				}
+				if (locationType == REG_EXPAND_SZ || locationType == REG_SZ) {
+					if (PathCanonicalize(exp, locationStr)) {
+						memcpy(locationStr, exp, bufSize * sizeof(WCHAR));
+						if (GetFullPathName(L".", bufSize, exp, 0) < bufSize) {
+							wstring installpath = locationStr, mypath = exp;
+							if (installpath == mypath + L"\\" || true) { // always update reg info, if we found it
+								WCHAR nameStr[bufSize], dateStr[bufSize], publisherStr[bufSize], icongroupStr[bufSize];
+								SYSTEMTIME stLocalTime;
+								GetLocalTime(&stLocalTime);
+								RegSetValueEx(rkey, L"DisplayVersion", 0, REG_SZ, (const BYTE*)versionStr, ((versionLen / 2) + 1) * sizeof(WCHAR));
+								wsprintf(nameStr, L"Telegram Desktop");
+								RegSetValueEx(rkey, L"DisplayName", 0, REG_SZ, (const BYTE*)nameStr, (wcslen(nameStr) + 1) * sizeof(WCHAR));
+								wsprintf(publisherStr, L"Telegram FZ-LLC");
+								RegSetValueEx(rkey, L"Publisher", 0, REG_SZ, (const BYTE*)publisherStr, (wcslen(publisherStr) + 1) * sizeof(WCHAR));
+								wsprintf(icongroupStr, L"Telegram Desktop");
+								RegSetValueEx(rkey, L"Inno Setup: Icon Group", 0, REG_SZ, (const BYTE*)icongroupStr, (wcslen(icongroupStr) + 1) * sizeof(WCHAR));
+								wsprintf(dateStr, L"%04d%02d%02d", stLocalTime.wYear, stLocalTime.wMonth, stLocalTime.wDay);
+								RegSetValueEx(rkey, L"InstallDate", 0, REG_SZ, (const BYTE*)dateStr, (wcslen(dateStr) + 1) * sizeof(WCHAR));
+
+								const WCHAR *appURL = L"https://desktop.telegram.org";
+								RegSetValueEx(rkey, L"HelpLink", 0, REG_SZ, (const BYTE*)appURL, (wcslen(appURL) + 1) * sizeof(WCHAR));
+								RegSetValueEx(rkey, L"URLInfoAbout", 0, REG_SZ, (const BYTE*)appURL, (wcslen(appURL) + 1) * sizeof(WCHAR));
+								RegSetValueEx(rkey, L"URLUpdateInfo", 0, REG_SZ, (const BYTE*)appURL, (wcslen(appURL) + 1) * sizeof(WCHAR));
+							}
+						}
+					}
+				}
+			}
+			RegCloseKey(rkey);
+		}
+	}
+}
+
+int APIENTRY wWinMain(HINSTANCE instance, HINSTANCE prevInstance, LPWSTR cmdParamarg, int cmdShow) {
+	base::Platform::InitDynamicLibraries();
+
+	openLog();
+
+	_oldWndExceptionFilter = SetUnhandledExceptionFilter(_exceptionFilter);
+//	CAPIHook apiHook("kernel32.dll", "SetUnhandledExceptionFilter", (PROC)RedirectedSetUnhandledExceptionFilter);
+
+	writeLog(L"Updaters started..");
+
+	LPWSTR *args;
+	int argsCount;
+
+	bool needupdate = false, autostart = false, debug = false, writeprotected = false, startintray = false;
+	args = CommandLineToArgvW(GetCommandLine(), &argsCount);
+	if (args) {
+		for (int i = 1; i < argsCount; ++i) {
+			writeLog(std::wstring(L"Argument: ") + args[i]);
+			if (equal(args[i], L"-update")) {
+				needupdate = true;
+			} else if (equal(args[i], L"-autostart")) {
+				autostart = true;
+			} else if (equal(args[i], L"-debug")) {
+				debug = _debug = true;
+				openLog();
+			} else if (equal(args[i], L"-startintray")) {
+				startintray = true;
+			} else if (equal(args[i], L"-writeprotected") && ++i < argsCount) {
+				writeLog(std::wstring(L"Argument: ") + args[i]);
+				writeprotected = true;
+				updateTo = args[i];
+				for (int j = 0, l = updateTo.size(); j < l; ++j) {
+					if (updateTo[j] == L'/') {
+						updateTo[j] = L'\\';
+					}
+				}
+			} else if (equal(args[i], L"-workdir") && ++i < argsCount) {
+				writeLog(std::wstring(L"Argument: ") + args[i]);
+				customWorkingDir = args[i];
+			} else if (equal(args[i], L"-key") && ++i < argsCount) {
+				writeLog(std::wstring(L"Argument: ") + args[i]);
+				customKeyFile = args[i];
+			} else if (equal(args[i], L"-exename") && ++i < argsCount) {
+				writeLog(std::wstring(L"Argument: ") + args[i]);
+				exeName = args[i];
+				for (int j = 0, l = exeName.size(); j < l; ++j) {
+					if (exeName[j] == L'/' || exeName[j] == L'\\') {
+						exeName = L"Telegram.exe";
+						break;
+					}
+				}
+			}
+		}
+		if (exeName.empty()) {
+			exeName = L"Telegram.exe";
+		}
+		if (needupdate) writeLog(L"Need to update!");
+		if (autostart) writeLog(L"From autostart!");
+		if (writeprotected) writeLog(L"Write Protected folder!");
+		if (!customWorkingDir.empty()) writeLog(L"Will pass custom working dir: " + customWorkingDir);
+
+		updaterName = args[0];
+		writeLog(L"Updater name is: " + updaterName);
+		if (updaterName.size() > 11) {
+			if (equal(updaterName.substr(updaterName.size() - 11), L"Updater.exe")) {
+				updaterDir = updaterName.substr(0, updaterName.size() - 11);
+				writeLog(L"Updater dir is: " + updaterDir);
+				if (!writeprotected) {
+					updateTo = updaterDir;
+				}
+				writeLog(L"Update to: " + updateTo);
+				if (needupdate && update()) {
+					updateRegistry();
+				}
+				if (writeprotected) { // if we can't clear all tupdates\ready (Updater.exe is there) - clear only version
+					if (DeleteFile(L"tupdates\\temp\\tdata\\version") || DeleteFile(L"tupdates\\ready\\tdata\\version")) {
+						writeLog(L"Version file deleted!");
+					} else {
+						writeLog(L"Error: could not delete version file");
+					}
+				}
+			} else {
+				writeLog(L"Error: bad exe name!");
+			}
+		} else {
+			writeLog(L"Error: short exe name!");
+		}
+		LocalFree(args);
+	} else {
+		writeLog(L"Error: No command line arguments!");
+	}
+
+	wstring targs;
+	if (autostart) targs += L" -autostart";
+	if (debug) targs += L" -debug";
+	if (startintray) targs += L" -startintray";
+	if (!customWorkingDir.empty()) {
+		targs += L" -workdir \"" + customWorkingDir + L"\"";
+	}
+	if (!customKeyFile.empty()) {
+		targs += L" -key \"" + customKeyFile + L"\"";
+	}
+	writeLog(L"Result arguments: " + targs);
+
+	bool executed = false;
+	if (writeprotected) { // run un-elevated
+		writeLog(L"Trying to run un-elevated by temp.lnk");
+
+		HRESULT hres = CoInitialize(0);
+		if (SUCCEEDED(hres)) {
+			IShellLink* psl;
+			HRESULT hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink, (LPVOID*)&psl);
+			if (SUCCEEDED(hres)) {
+				IPersistFile* ppf;
+
+				wstring exe = updateTo + exeName, dir = updateTo;
+				psl->SetArguments((targs.size() ? targs.substr(1) : targs).c_str());
+				psl->SetPath(exe.c_str());
+				psl->SetWorkingDirectory(dir.c_str());
+				psl->SetDescription(L"");
+
+				hres = psl->QueryInterface(IID_IPersistFile, (LPVOID*)&ppf);
+
+				if (SUCCEEDED(hres)) {
+					wstring lnk = L"tupdates\\temp\\temp.lnk";
+					hres = ppf->Save(lnk.c_str(), TRUE);
+					if (!SUCCEEDED(hres)) {
+						lnk = L"tupdates\\ready\\temp.lnk"; // old
+						hres = ppf->Save(lnk.c_str(), TRUE);
+					}
+					ppf->Release();
+
+					if (SUCCEEDED(hres)) {
+						writeLog(L"Executing un-elevated through link..");
+						ShellExecute(0, 0, L"explorer.exe", lnk.c_str(), 0, SW_SHOWNORMAL);
+						executed = true;
+					} else {
+						writeLog(L"Error: ppf->Save failed");
+					}
+				} else {
+					writeLog(L"Error: Could not create interface IID_IPersistFile");
+				}
+				psl->Release();
+			} else {
+				writeLog(L"Error: could not create instance of IID_IShellLink");
+			}
+			CoUninitialize();
+		} else {
+			writeLog(L"Error: Could not initialize COM");
+		}
+	}
+	if (!executed) {
+		ShellExecute(0, 0, (updateTo + exeName).c_str(), (L"-noupdate" + targs).c_str(), 0, SW_SHOWNORMAL);
+	}
+
+	writeLog(L"Executed '" + exeName + L"', closing log and quitting..");
+	closeLog();
+
+	return 0;
+}
+
+static const WCHAR *_programName = L"Telegram Desktop"; // folder in APPDATA, if current path is unavailable for writing
+static const WCHAR *_exeName = L"Updater.exe";
+
+LPTOP_LEVEL_EXCEPTION_FILTER _oldWndExceptionFilter = 0;
+
+typedef BOOL (FAR STDAPICALLTYPE *t_miniDumpWriteDump)(
+	_In_ HANDLE hProcess,
+	_In_ DWORD ProcessId,
+	_In_ HANDLE hFile,
+	_In_ MINIDUMP_TYPE DumpType,
+	_In_opt_ PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam,
+	_In_opt_ PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam,
+	_In_opt_ PMINIDUMP_CALLBACK_INFORMATION CallbackParam
+);
+t_miniDumpWriteDump miniDumpWriteDump = 0;
+
+HANDLE _generateDumpFileAtPath(const WCHAR *path) {
+	static const int maxFileLen = MAX_PATH * 10;
+
+	WCHAR szPath[maxFileLen];
+	wsprintf(szPath, L"%stdata\\", path);
+	if (!CreateDirectory(szPath, NULL)) {
+		if (GetLastError() != ERROR_ALREADY_EXISTS) {
+			return 0;
+		}
+	}
+	wsprintf(szPath, L"%sdumps\\", path);
+	if (!CreateDirectory(szPath, NULL)) {
+		if (GetLastError() != ERROR_ALREADY_EXISTS) {
+			return 0;
+		}
+	}
+
+	WCHAR szFileName[maxFileLen];
+	WCHAR szExeName[maxFileLen];
+
+	wcscpy_s(szExeName, _exeName);
+	WCHAR *dotFrom = wcschr(szExeName, WCHAR(L'.'));
+	if (dotFrom) {
+		wsprintf(dotFrom, L"");
+	}
+
+	SYSTEMTIME stLocalTime;
+
+	GetLocalTime(&stLocalTime);
+
+	wsprintf(
+		szFileName, L"%s%s-%s-%04d%02d%02d-%02d%02d%02d-%ld-%ld.dmp",
+		szPath, szExeName, updaterVersionStr,
+		stLocalTime.wYear, stLocalTime.wMonth, stLocalTime.wDay,
+		stLocalTime.wHour, stLocalTime.wMinute, stLocalTime.wSecond,
+		GetCurrentProcessId(), GetCurrentThreadId());
+	return CreateFile(szFileName, GENERIC_READ|GENERIC_WRITE, FILE_SHARE_WRITE|FILE_SHARE_READ, 0, CREATE_ALWAYS, 0, 0);
+}
+
+void _generateDump(EXCEPTION_POINTERS* pExceptionPointers) {
+	static const int maxFileLen = MAX_PATH * 10;
+
+	closeLog();
+
+	HMODULE hDll = LoadLibrary(L"DBGHELP.DLL");
+	if (!hDll) return;
+
+	miniDumpWriteDump = (t_miniDumpWriteDump)GetProcAddress(hDll, "MiniDumpWriteDump");
+	if (!miniDumpWriteDump) return;
+
+	HANDLE hDumpFile = 0;
+
+	WCHAR szPath[maxFileLen];
+	DWORD len = GetModuleFileName(GetModuleHandle(0), szPath, maxFileLen);
+	if (!len) return;
+
+	WCHAR *pathEnd = szPath + len;
+
+	if (!_wcsicmp(pathEnd - wcslen(_exeName), _exeName)) {
+		wsprintf(pathEnd - wcslen(_exeName), L"");
+		hDumpFile = _generateDumpFileAtPath(szPath);
+	}
+	if (!hDumpFile || hDumpFile == INVALID_HANDLE_VALUE) {
+		WCHAR wstrPath[maxFileLen];
+		DWORD wstrPathLen = GetEnvironmentVariable(L"APPDATA", wstrPath, maxFileLen);
+		if (wstrPathLen) {
+			wsprintf(wstrPath + wstrPathLen, L"\\%s\\", _programName);
+			hDumpFile = _generateDumpFileAtPath(wstrPath);
+		}
+	}
+
+	if (!hDumpFile || hDumpFile == INVALID_HANDLE_VALUE) {
+		return;
+	}
+
+	MINIDUMP_EXCEPTION_INFORMATION ExpParam = {0};
+	ExpParam.ThreadId = GetCurrentThreadId();
+	ExpParam.ExceptionPointers = pExceptionPointers;
+	ExpParam.ClientPointers = TRUE;
+
+	miniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(), hDumpFile, MiniDumpWithDataSegs, &ExpParam, NULL, NULL);
+}
+
+LONG CALLBACK _exceptionFilter(EXCEPTION_POINTERS* pExceptionPointers) {
+	_generateDump(pExceptionPointers);
+	return _oldWndExceptionFilter ? (*_oldWndExceptionFilter)(pExceptionPointers) : EXCEPTION_CONTINUE_SEARCH;
+}
+
+// see http://www.codeproject.com/Articles/154686/SetUnhandledExceptionFilter-and-the-C-C-Runtime-Li
+LPTOP_LEVEL_EXCEPTION_FILTER WINAPI RedirectedSetUnhandledExceptionFilter(_In_opt_ LPTOP_LEVEL_EXCEPTION_FILTER lpTopLevelExceptionFilter) {
+	// When the CRT calls SetUnhandledExceptionFilter with NULL parameter
+	// our handler will not get removed.
+	_oldWndExceptionFilter = lpTopLevelExceptionFilter;
+	return 0;
+}

Telegram/SourceFiles/api/api_attached_stickers.cpp

@@ -0,0 +1,92 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_attached_stickers.h"
+
+#include "apiwrap.h"
+#include "ui/boxes/confirm_box.h"
+#include "boxes/sticker_set_box.h"
+#include "boxes/stickers_box.h"
+#include "data/data_document.h"
+#include "data/data_photo.h"
+#include "lang/lang_keys.h"
+#include "window/window_session_controller.h"
+
+namespace Api {
+
+AttachedStickers::AttachedStickers(not_null<ApiWrap*> api)
+: _api(&api->instance()) {
+}
+
+void AttachedStickers::request(
+		not_null<Window::SessionController*> controller,
+		MTPmessages_GetAttachedStickers &&mtpRequest) {
+	const auto weak = base::make_weak(controller);
+	_api.request(_requestId).cancel();
+	_requestId = _api.request(
+		std::move(mtpRequest)
+	).done([=](const MTPVector<MTPStickerSetCovered> &result) {
+		_requestId = 0;
+		const auto strongController = weak.get();
+		if (!strongController) {
+			return;
+		}
+		if (result.v.isEmpty()) {
+			strongController->show(
+				Ui::MakeInformBox(tr::lng_stickers_not_found()));
+			return;
+		} else if (result.v.size() > 1) {
+			strongController->show(
+				Box<StickersBox>(strongController->uiShow(), result.v));
+			return;
+		}
+		// Single attached sticker pack.
+		const auto data = result.v.front().match([&](const auto &data) {
+			return &data.vset().data();
+		});
+
+		const auto setId = (data->vid().v && data->vaccess_hash().v)
+			? StickerSetIdentifier{
+				.id = data->vid().v,
+				.accessHash = data->vaccess_hash().v }
+			: StickerSetIdentifier{ .shortName = qs(data->vshort_name()) };
+		strongController->show(Box<StickerSetBox>(
+			strongController->uiShow(),
+			setId,
+			(data->is_emojis()
+				? Data::StickersType::Emoji
+				: data->is_masks()
+				? Data::StickersType::Masks
+				: Data::StickersType::Stickers)));
+	}).fail([=] {
+		_requestId = 0;
+		if (const auto strongController = weak.get()) {
+			strongController->show(
+				Ui::MakeInformBox(tr::lng_stickers_not_found()));
+		}
+	}).send();
+}
+
+void AttachedStickers::requestAttachedStickerSets(
+		not_null<Window::SessionController*> controller,
+		not_null<PhotoData*> photo) {
+	request(
+		controller,
+		MTPmessages_GetAttachedStickers(
+			MTP_inputStickeredMediaPhoto(photo->mtpInput())));
+}
+
+void AttachedStickers::requestAttachedStickerSets(
+		not_null<Window::SessionController*> controller,
+		not_null<DocumentData*> document) {
+	request(
+		controller,
+		MTPmessages_GetAttachedStickers(
+			MTP_inputStickeredMediaDocument(document->mtpInput())));
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_attached_stickers.h

@@ -0,0 +1,44 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "mtproto/sender.h"
+
+class ApiWrap;
+class DocumentData;
+class PhotoData;
+
+namespace Window {
+class SessionController;
+} // namespace Window
+
+namespace Api {
+
+class AttachedStickers final {
+public:
+	explicit AttachedStickers(not_null<ApiWrap*> api);
+
+	void requestAttachedStickerSets(
+		not_null<Window::SessionController*> controller,
+		not_null<PhotoData*> photo);
+
+	void requestAttachedStickerSets(
+		not_null<Window::SessionController*> controller,
+		not_null<DocumentData*> document);
+
+private:
+	void request(
+		not_null<Window::SessionController*> controller,
+		MTPmessages_GetAttachedStickers &&mtpRequest);
+
+	MTP::Sender _api;
+	mtpRequestId _requestId = 0;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_authorizations.cpp

@@ -0,0 +1,405 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_authorizations.h"
+
+#include "apiwrap.h"
+#include "base/unixtime.h"
+#include "core/application.h"
+#include "core/changelogs.h"
+#include "core/core_settings.h"
+#include "lang/lang_keys.h"
+#include "main/main_app_config.h"
+#include "main/main_session_settings.h"
+#include "main/main_session.h"
+
+namespace Api {
+namespace {
+
+constexpr auto TestApiId = 17349;
+constexpr auto SnapApiId = 611335;
+constexpr auto DesktopApiId = 2040;
+
+Authorizations::Entry ParseEntry(const MTPDauthorization &data) {
+	auto result = Authorizations::Entry();
+
+	result.hash = data.is_current() ? 0 : data.vhash().v;
+	result.incomplete = data.is_password_pending();
+	result.callsDisabled = data.is_call_requests_disabled();
+
+	const auto apiId = result.apiId = data.vapi_id().v;
+	const auto isTest = (apiId == TestApiId);
+	const auto isDesktop = (apiId == DesktopApiId)
+		|| (apiId == SnapApiId)
+		|| isTest;
+
+	const auto appName = isDesktop
+		? u"Telegram Desktop%1"_q.arg(isTest ? " (GitHub)" : QString())
+		: qs(data.vapp_name());// + u" for "_q + qs(d.vplatform());
+	const auto appVer = [&] {
+		const auto version = qs(data.vapp_version());
+		if (isDesktop) {
+			const auto verInt = version.toInt();
+			if (version == QString::number(verInt)) {
+				return Core::FormatVersionDisplay(verInt);
+			}
+		} else {
+			if (const auto index = version.indexOf('('); index >= 0) {
+				return version.mid(index);
+			}
+		}
+		return version;
+	}();
+
+	result.name = result.hash
+		? qs(data.vdevice_model())
+		: Core::App().settings().deviceModel();
+
+	const auto country = qs(data.vcountry());
+	//const auto platform = qs(data.vplatform());
+	//const auto &countries = countriesByISO2();
+	//const auto j = countries.constFind(country);
+	//if (j != countries.cend()) {
+	//	country = QString::fromUtf8(j.value()->name);
+	//}
+	result.system = qs(data.vsystem_version());
+	result.platform = qs(data.vplatform());
+	result.activeTime = data.vdate_active().v
+		? data.vdate_active().v
+		: data.vdate_created().v;
+	result.info = QString("%1%2").arg(
+		appName,
+		appVer.isEmpty() ? QString() : (' ' + appVer));
+	result.ip = qs(data.vip());
+	result.active = result.hash
+		? Authorizations::ActiveDateString(result.activeTime)
+		: tr::lng_status_online(tr::now);
+	result.location = country;
+
+	return result;
+}
+
+} // namespace
+
+Authorizations::Authorizations(not_null<ApiWrap*> api)
+: _api(&api->instance())
+, _autoconfirmPeriod([=] {
+	constexpr auto kFallbackCount = 604800;
+	return api->session().appConfig().get<int>(
+		u"authorization_autoconfirm_period"_q,
+		kFallbackCount);
+})
+, _saveUnreviewed([=] {
+	api->session().settings().setUnreviewed(_unreviewed);
+	api->session().saveSettingsDelayed();
+}) {
+	_unreviewed = api->session().settings().unreviewed();
+	crl::on_main(&api->session(), [=] { removeExpiredUnreviewed(); });
+	Core::App().settings().deviceModelChanges(
+	) | rpl::on_next([=](const QString &model) {
+		auto changed = false;
+		for (auto &entry : _list) {
+			if (!entry.hash) {
+				entry.name = model;
+				changed = true;
+			}
+		}
+		if (changed) {
+			_listChanges.fire({});
+		}
+	}, _lifetime);
+
+	if (Core::App().settings().disableCallsLegacy()) {
+		toggleCallsDisabledHere(true);
+	}
+}
+
+void Authorizations::reload() {
+	if (_requestId) {
+		return;
+	}
+
+	_requestId = _api.request(MTPaccount_GetAuthorizations(
+	)).done([=](const MTPaccount_Authorizations &result) {
+		_requestId = 0;
+		_lastReceived = crl::now();
+		const auto &data = result.data();
+		_ttlDays = data.vauthorization_ttl_days().v;
+		_list = ranges::views::all(
+			data.vauthorizations().v
+		) | ranges::views::transform([](const MTPAuthorization &auth) {
+			return ParseEntry(auth.data());
+		}) | ranges::to<List>;
+		removeExpiredUnreviewed();
+		refreshCallsDisabledHereFromCloud();
+		_listChanges.fire({});
+	}).fail([=] {
+		_requestId = 0;
+	}).send();
+}
+
+void Authorizations::cancelCurrentRequest() {
+	_api.request(base::take(_requestId)).cancel();
+}
+
+void Authorizations::refreshCallsDisabledHereFromCloud() {
+	const auto that = ranges::find(_list, 0, &Entry::hash);
+	if (that != end(_list)
+		&& !_toggleCallsDisabledRequests.contains(0)) {
+		_callsDisabledHere = that->callsDisabled;
+	}
+}
+
+void Authorizations::requestTerminate(
+		Fn<void(const MTPBool &result)> &&done,
+		Fn<void(const MTP::Error &error)> &&fail,
+		std::optional<uint64> hash) {
+	const auto send = [&](auto request) {
+		_api.request(
+			std::move(request)
+		).done([=, done = std::move(done)](const MTPBool &result) {
+			done(result);
+			if (mtpIsTrue(result)) {
+				if (hash) {
+					_list.erase(
+						ranges::remove(_list, *hash, &Entry::hash),
+						end(_list));
+				} else {
+					_list.clear();
+				}
+				_listChanges.fire({});
+			}
+		}).fail(
+			std::move(fail)
+		).send();
+	};
+	if (hash) {
+		send(MTPaccount_ResetAuthorization(MTP_long(*hash)));
+	} else {
+		send(MTPauth_ResetAuthorizations());
+	}
+}
+
+Authorizations::List Authorizations::list() const {
+	return _list;
+}
+
+auto Authorizations::listValue() const
+-> rpl::producer<Authorizations::List> {
+	return rpl::single(
+		list()
+	) | rpl::then(
+		_listChanges.events() | rpl::map([=] { return list(); })
+	);
+}
+
+rpl::producer<int> Authorizations::totalValue() const {
+	return rpl::single(
+		total()
+	) | rpl::then(
+		_listChanges.events() | rpl::map([=] { return total(); })
+	);
+}
+
+void Authorizations::updateTTL(int days) {
+	_api.request(_ttlRequestId).cancel();
+	_ttlRequestId = _api.request(MTPaccount_SetAuthorizationTTL(
+		MTP_int(days)
+	)).done([=] {
+		_ttlRequestId = 0;
+	}).fail([=] {
+		_ttlRequestId = 0;
+	}).send();
+	_ttlDays = days;
+}
+
+rpl::producer<int> Authorizations::ttlDays() const {
+	return _ttlDays.value() | rpl::filter(rpl::mappers::_1 != 0);
+}
+
+void Authorizations::toggleCallsDisabled(uint64 hash, bool disabled) {
+	if (const auto sent = _toggleCallsDisabledRequests.take(hash)) {
+		_api.request(*sent).cancel();
+	}
+	using Flag = MTPaccount_ChangeAuthorizationSettings::Flag;
+	const auto id = _api.request(MTPaccount_ChangeAuthorizationSettings(
+		MTP_flags(Flag::f_call_requests_disabled),
+		MTP_long(hash),
+		MTPBool(), // encrypted_requests_disabled
+		MTP_bool(disabled)
+	)).done([=] {
+		_toggleCallsDisabledRequests.remove(hash);
+	}).fail([=] {
+		_toggleCallsDisabledRequests.remove(hash);
+	}).send();
+	_toggleCallsDisabledRequests.emplace(hash, id);
+	if (!hash) {
+		_callsDisabledHere = disabled;
+	}
+}
+
+bool Authorizations::callsDisabledHere() const {
+	return _callsDisabledHere.current();
+}
+
+rpl::producer<bool> Authorizations::callsDisabledHereValue() const {
+	return _callsDisabledHere.value();
+}
+
+rpl::producer<bool> Authorizations::callsDisabledHereChanges() const {
+	return _callsDisabledHere.changes();
+}
+
+QString Authorizations::ActiveDateString(TimeId active) {
+	const auto now = QDateTime::currentDateTime();
+	const auto lastTime = base::unixtime::parse(active);
+	const auto nowDate = now.date();
+	const auto lastDate = lastTime.date();
+	return (lastDate == nowDate)
+		? QLocale().toString(lastTime.time(), QLocale::ShortFormat)
+		: (lastDate.year() == nowDate.year()
+			&& lastDate.weekNumber() == nowDate.weekNumber())
+		? langDayOfWeek(lastDate)
+		: QLocale().toString(lastDate, QLocale::ShortFormat);
+}
+
+int Authorizations::total() const {
+	return ranges::count_if(
+		_list,
+		ranges::not_fn(&Entry::incomplete));
+}
+
+crl::time Authorizations::lastReceivedTime() {
+	return _lastReceived;
+}
+
+const std::vector<Data::UnreviewedAuth> &Authorizations::unreviewed() {
+	removeExpiredUnreviewed();
+	return _unreviewed;
+}
+
+void Authorizations::removeExpiredUnreviewed() {
+	const auto now = base::unixtime::now();
+	const auto period = _autoconfirmPeriod();
+
+	const auto oldSize = _unreviewed.size();
+	_unreviewed.erase(
+		std::remove_if(_unreviewed.begin(), _unreviewed.end(),
+			[=](const auto &auth) {
+				return (now - auth.date) >= period;
+			}),
+		_unreviewed.end());
+
+	if (_unreviewed.size() != oldSize) {
+		_saveUnreviewed();
+	}
+}
+
+void Authorizations::review(const std::vector<uint64> &hashes, bool confirm) {
+	for (const auto hash : hashes) {
+		if (const auto sent = _reviewRequests.take(hash)) {
+			_api.request(*sent).cancel();
+		}
+	}
+
+	const auto checkComplete = [=] {
+		if (_reviewRequests.empty()) {
+			_saveUnreviewed();
+			_unreviewedChanges.fire({});
+		}
+	};
+
+	for (const auto hash : hashes) {
+		const auto removeFromUnreviewed = [=] {
+			_unreviewed.erase(
+				std::remove_if(_unreviewed.begin(), _unreviewed.end(),
+					[hash](const auto &auth) { return auth.hash == hash; }),
+				_unreviewed.end());
+			_reviewRequests.remove(hash);
+			checkComplete();
+		};
+
+		if (confirm) {
+			using Flag = MTPaccount_ChangeAuthorizationSettings::Flag;
+			const auto id = _api.request(MTPaccount_ChangeAuthorizationSettings(
+				MTP_flags(Flag::f_confirmed),
+				MTP_long(hash),
+				MTPBool(), // encrypted_requests_disabled
+				MTPBool() // call_requests_disabled
+			)).done([=] {
+				removeFromUnreviewed();
+			}).fail([=] {
+				removeFromUnreviewed();
+			}).send();
+			_reviewRequests.emplace(hash, id);
+		} else {
+			const auto id = _api.request(MTPaccount_ResetAuthorization(
+				MTP_long(hash)
+			)).done([=](const MTPBool &result) {
+				if (mtpIsTrue(result)) {
+					_list.erase(
+						ranges::remove(_list, hash, &Entry::hash),
+						end(_list));
+					_listChanges.fire({});
+				}
+				removeFromUnreviewed();
+			}).fail([=] {
+				removeFromUnreviewed();
+			}).send();
+			_reviewRequests.emplace(hash, id);
+		}
+	}
+}
+
+rpl::producer<> Authorizations::unreviewedChanges() const {
+	return _unreviewedChanges.events();
+}
+
+void Authorizations::apply(const MTPUpdate &update) {
+	removeExpiredUnreviewed();
+	update.match([&](const MTPDupdateNewAuthorization &data) {
+		auto unreviewed = Data::UnreviewedAuth{
+			.hash = data.vhash().v,
+			.unconfirmed = data.is_unconfirmed(),
+			.date = data.vdate().value_or_empty(),
+			.device = qs(data.vdevice().value_or_empty()),
+			.location = qs(data.vlocation().value_or_empty())
+		};
+		if (!unreviewed.unconfirmed) {
+			const auto hash = unreviewed.hash;
+			const auto was = _unreviewed.size();
+			_unreviewed.erase(
+				std::remove_if(
+					_unreviewed.begin(),
+					_unreviewed.end(),
+					[hash](const auto &auth) { return auth.hash == hash; }),
+				_unreviewed.end());
+			if (was != _unreviewed.size()) {
+				_saveUnreviewed();
+				_unreviewedChanges.fire({});
+			}
+			return;
+		}
+
+		for (auto &auth : _unreviewed) {
+			if (auth.hash == unreviewed.hash) {
+				auth = std::move(unreviewed);
+				_saveUnreviewed();
+				_unreviewedChanges.fire({});
+				return;
+			}
+		}
+
+		_unreviewed.push_back(std::move(unreviewed));
+		_saveUnreviewed();
+		_unreviewedChanges.fire({});
+	}, [](auto&&) {
+		Unexpected("Update in Authorizations::apply.");
+	});
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_authorizations.h

@@ -0,0 +1,93 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "data/data_authorization.h"
+#include "mtproto/sender.h"
+
+class ApiWrap;
+
+namespace Api {
+
+class Authorizations final {
+public:
+	explicit Authorizations(not_null<ApiWrap*> api);
+
+	struct Entry {
+		uint64 hash = 0;
+
+		bool incomplete = false;
+		bool callsDisabled = false;
+		int apiId = 0;
+		TimeId activeTime = 0;
+		QString name, active, info, ip, location, system, platform;
+	};
+	using List = std::vector<Entry>;
+
+	void reload();
+	void cancelCurrentRequest();
+	void requestTerminate(
+		Fn<void(const MTPBool &result)> &&done,
+		Fn<void(const MTP::Error &error)> &&fail,
+		std::optional<uint64> hash = std::nullopt);
+
+	void apply(const MTPUpdate &update);
+
+	[[nodiscard]] crl::time lastReceivedTime();
+
+	[[nodiscard]] List list() const;
+	[[nodiscard]] rpl::producer<List> listValue() const;
+	[[nodiscard]] int total() const;
+	[[nodiscard]] rpl::producer<int> totalValue() const;
+
+	[[nodiscard]] const std::vector<Data::UnreviewedAuth> &unreviewed();
+	[[nodiscard]] rpl::producer<> unreviewedChanges() const;
+
+	void review(const std::vector<uint64> &hashes, bool confirm);
+
+	void updateTTL(int days);
+	[[nodiscard]] rpl::producer<int> ttlDays() const;
+
+	void toggleCallsDisabledHere(bool disabled) {
+		toggleCallsDisabled(0, disabled);
+	}
+	void toggleCallsDisabled(uint64 hash, bool disabled);
+	[[nodiscard]] bool callsDisabledHere() const;
+	[[nodiscard]] rpl::producer<bool> callsDisabledHereValue() const;
+	[[nodiscard]] rpl::producer<bool> callsDisabledHereChanges() const;
+
+	[[nodiscard]] static QString ActiveDateString(TimeId active);
+
+private:
+	void refreshCallsDisabledHereFromCloud();
+	void removeExpiredUnreviewed();
+
+	MTP::Sender _api;
+	mtpRequestId _requestId = 0;
+
+	List _list;
+	rpl::event_stream<> _listChanges;
+
+	Fn<int()> _autoconfirmPeriod;
+	std::vector<Data::UnreviewedAuth> _unreviewed;
+	rpl::event_stream<> _unreviewedChanges;
+	Fn<void()> _saveUnreviewed;
+
+	mtpRequestId _ttlRequestId = 0;
+	rpl::variable<int> _ttlDays = 0;
+
+	base::flat_map<uint64, mtpRequestId> _toggleCallsDisabledRequests;
+	base::flat_map<uint64, mtpRequestId> _reviewRequests;
+	rpl::variable<bool> _callsDisabledHere;
+
+	crl::time _lastReceived = 0;
+	rpl::lifetime _lifetime;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_blocked_peers.cpp

@@ -0,0 +1,226 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_blocked_peers.h"
+
+#include "apiwrap.h"
+#include "base/unixtime.h"
+#include "data/data_changes.h"
+#include "data/data_peer.h"
+#include "data/data_peer_id.h"
+#include "data/data_session.h"
+#include "main/main_session.h"
+
+namespace Api {
+namespace {
+
+constexpr auto kBlockedFirstSlice = 16;
+constexpr auto kBlockedPerPage = 40;
+
+BlockedPeers::Slice TLToSlice(
+		const MTPcontacts_Blocked &blocked,
+		Data::Session &owner) {
+	const auto create = [&](int count, const QVector<MTPPeerBlocked> &list) {
+		auto slice = BlockedPeers::Slice();
+		slice.total = std::max(count, int(list.size()));
+		slice.list.reserve(list.size());
+		for (const auto &contact : list) {
+			contact.match([&](const MTPDpeerBlocked &data) {
+				slice.list.push_back({
+					.id = peerFromMTP(data.vpeer_id()),
+					.date = data.vdate().v,
+				});
+			});
+		}
+		return slice;
+	};
+	return blocked.match([&](const MTPDcontacts_blockedSlice &data) {
+		owner.processUsers(data.vusers());
+		owner.processChats(data.vchats());
+		return create(data.vcount().v, data.vblocked().v);
+	}, [&](const MTPDcontacts_blocked &data) {
+		owner.processUsers(data.vusers());
+		owner.processChats(data.vchats());
+		return create(0, data.vblocked().v);
+	});
+}
+
+} // namespace
+
+BlockedPeers::BlockedPeers(not_null<ApiWrap*> api)
+: _session(&api->session())
+, _api(&api->instance()) {
+}
+
+bool BlockedPeers::Slice::Item::operator==(const Item &other) const {
+	return (id == other.id) && (date == other.date);
+}
+
+bool BlockedPeers::Slice::Item::operator!=(const Item &other) const {
+	return !(*this == other);
+}
+
+bool BlockedPeers::Slice::operator==(const BlockedPeers::Slice &other) const {
+	return (total == other.total) && (list == other.list);
+}
+
+bool BlockedPeers::Slice::operator!=(const BlockedPeers::Slice &other) const {
+	return !(*this == other);
+}
+
+void BlockedPeers::block(not_null<PeerData*> peer) {
+	if (peer->isBlocked()) {
+		_session->changes().peerUpdated(
+			peer,
+			Data::PeerUpdate::Flag::IsBlocked);
+		return;
+	} else if (blockAlreadySent(peer, true)) {
+		return;
+	}
+	const auto requestId = _api.request(MTPcontacts_Block(
+		MTP_flags(0),
+		peer->input()
+	)).done([=] {
+		const auto data = _blockRequests.take(peer);
+		peer->setIsBlocked(true);
+		if (_slice) {
+			_slice->list.insert(
+				_slice->list.begin(),
+				{ peer->id, base::unixtime::now() });
+			++_slice->total;
+			_changes.fire_copy(*_slice);
+		}
+		if (data) {
+			for (const auto &callback : data->callbacks) {
+				callback(false);
+			}
+		}
+	}).fail([=] {
+		if (const auto data = _blockRequests.take(peer)) {
+			for (const auto &callback : data->callbacks) {
+				callback(false);
+			}
+		}
+	}).send();
+
+	_blockRequests.emplace(peer, Request{
+		.requestId = requestId,
+		.blocking = true,
+	});
+}
+
+void BlockedPeers::unblock(
+		not_null<PeerData*> peer,
+		Fn<void(bool success)> done,
+		bool force) {
+	if (!force && !peer->isBlocked()) {
+		_session->changes().peerUpdated(
+			peer,
+			Data::PeerUpdate::Flag::IsBlocked);
+		return;
+	} else if (blockAlreadySent(peer, false, done)) {
+		return;
+	}
+	const auto requestId = _api.request(MTPcontacts_Unblock(
+		MTP_flags(0),
+		peer->input()
+	)).done([=] {
+		const auto data = _blockRequests.take(peer);
+		peer->setIsBlocked(false);
+		if (_slice) {
+			auto &list = _slice->list;
+			for (auto i = list.begin(); i != list.end(); ++i) {
+				if (i->id == peer->id) {
+					list.erase(i);
+					break;
+				}
+			}
+			if (_slice->total > list.size()) {
+				--_slice->total;
+			}
+			_changes.fire_copy(*_slice);
+		}
+		if (data) {
+			for (const auto &callback : data->callbacks) {
+				callback(true);
+			}
+		}
+	}).fail([=] {
+		if (const auto data = _blockRequests.take(peer)) {
+			for (const auto &callback : data->callbacks) {
+				callback(false);
+			}
+		}
+	}).send();
+	const auto i = _blockRequests.emplace(peer, Request{
+		.requestId = requestId,
+		.blocking = false,
+	}).first;
+	if (done) {
+		i->second.callbacks.push_back(std::move(done));
+	}
+}
+
+bool BlockedPeers::blockAlreadySent(
+		not_null<PeerData*> peer,
+		bool blocking,
+		Fn<void(bool success)> done) {
+	const auto i = _blockRequests.find(peer);
+	if (i == end(_blockRequests)) {
+		return false;
+	} else if (i->second.blocking == blocking) {
+		if (done) {
+			i->second.callbacks.push_back(std::move(done));
+		}
+		return true;
+	}
+	const auto callbacks = base::take(i->second.callbacks);
+	_blockRequests.erase(i);
+	for (const auto &callback : callbacks) {
+		callback(false);
+	}
+	return false;
+}
+
+void BlockedPeers::reload() {
+	if (_requestId) {
+		return;
+	}
+	request(0, [=](Slice &&slice) {
+		if (!_slice || *_slice != slice) {
+			_slice = slice;
+			_changes.fire(std::move(slice));
+		}
+	});
+}
+
+auto BlockedPeers::slice() -> rpl::producer<BlockedPeers::Slice> {
+	if (!_slice) {
+		reload();
+	}
+	return _slice
+		? _changes.events_starting_with_copy(*_slice)
+		: (_changes.events() | rpl::type_erased);
+}
+
+void BlockedPeers::request(int offset, Fn<void(BlockedPeers::Slice)> done) {
+	if (_requestId) {
+		return;
+	}
+	_requestId = _api.request(MTPcontacts_GetBlocked(
+		MTP_flags(0),
+		MTP_int(offset),
+		MTP_int(offset ? kBlockedPerPage : kBlockedFirstSlice)
+	)).done([=](const MTPcontacts_Blocked &result) {
+		_requestId = 0;
+		done(TLToSlice(result, _session->data()));
+	}).fail([=] {
+		_requestId = 0;
+	}).send();
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_blocked_peers.h

@@ -0,0 +1,74 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "mtproto/sender.h"
+
+class ApiWrap;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+class BlockedPeers final {
+public:
+	struct Slice {
+		struct Item {
+			PeerId id;
+			TimeId date = 0;
+
+			bool operator==(const Item &other) const;
+			bool operator!=(const Item &other) const;
+		};
+
+		QVector<Item> list;
+		int total = 0;
+
+		bool operator==(const Slice &other) const;
+		bool operator!=(const Slice &other) const;
+	};
+
+	explicit BlockedPeers(not_null<ApiWrap*> api);
+
+	void reload();
+	rpl::producer<Slice> slice();
+	void request(int offset, Fn<void(Slice)> done);
+
+	void block(not_null<PeerData*> peer);
+	void unblock(
+		not_null<PeerData*> peer,
+		Fn<void(bool success)> done = nullptr,
+		bool force = false);
+
+private:
+	struct Request {
+		std::vector<Fn<void(bool success)>> callbacks;
+		mtpRequestId requestId = 0;
+		bool blocking = false;
+	};
+
+	[[nodiscard]] bool blockAlreadySent(
+		not_null<PeerData*> peer,
+		bool blocking,
+		Fn<void(bool success)> done = nullptr);
+
+	const not_null<Main::Session*> _session;
+
+	MTP::Sender _api;
+
+	base::flat_map<not_null<PeerData*>, Request> _blockRequests;
+	mtpRequestId _requestId = 0;
+	std::optional<Slice> _slice;
+	rpl::event_stream<Slice> _changes;
+
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_bot.cpp

@@ -0,0 +1,549 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_bot.h"
+
+#include "apiwrap.h"
+#include "api/api_cloud_password.h"
+#include "api/api_send_progress.h"
+#include "api/api_suggest_post.h"
+#include "boxes/share_box.h"
+#include "boxes/passcode_box.h"
+#include "boxes/url_auth_box.h"
+#include "boxes/peers/choose_peer_box.h"
+#include "lang/lang_keys.h"
+#include "chat_helpers/bot_command.h"
+#include "core/core_cloud_password.h"
+#include "core/click_handler_types.h"
+#include "data/data_changes.h"
+#include "data/data_peer.h"
+#include "data/data_poll.h"
+#include "data/data_user.h"
+#include "data/data_session.h"
+#include "history/history.h"
+#include "history/history_item.h"
+#include "history/history_item_components.h"
+#include "inline_bots/bot_attach_web_view.h"
+#include "payments/payments_checkout_process.h"
+#include "payments/payments_non_panel_process.h"
+#include "main/main_session.h"
+#include "mainwidget.h"
+#include "mainwindow.h"
+#include "window/window_session_controller.h"
+#include "window/window_peer_menu.h"
+#include "ui/boxes/confirm_box.h"
+#include "ui/toast/toast.h"
+#include "ui/layers/generic_box.h"
+#include "ui/text/text_utilities.h"
+
+#include <QtGui/QGuiApplication>
+#include <QtGui/QClipboard>
+
+namespace Api {
+namespace {
+
+void SendBotCallbackData(
+		not_null<Window::SessionController*> controller,
+		not_null<HistoryItem*> item,
+		int row,
+		int column,
+		std::optional<Core::CloudPasswordResult> password,
+		Fn<void()> done = nullptr,
+		Fn<void(const QString &)> handleError = nullptr) {
+	if (!item->isRegular()) {
+		return;
+	}
+	const auto history = item->history();
+	const auto session = &history->session();
+	const auto owner = &history->owner();
+	const auto api = &session->api();
+	const auto bot = item->getMessageBot();
+	const auto fullId = item->fullId();
+	const auto getButton = [=] {
+		return HistoryMessageMarkupButton::Get(owner, fullId, row, column);
+	};
+	const auto button = getButton();
+	if (!button || button->requestId) {
+		return;
+	}
+
+	using ButtonType = HistoryMessageMarkupButton::Type;
+	const auto isGame = (button->type == ButtonType::Game);
+
+	auto flags = MTPmessages_GetBotCallbackAnswer::Flags(0);
+	QByteArray sendData;
+	if (isGame) {
+		flags |= MTPmessages_GetBotCallbackAnswer::Flag::f_game;
+	} else if (button->type == ButtonType::Callback
+		|| button->type == ButtonType::CallbackWithPassword) {
+		flags |= MTPmessages_GetBotCallbackAnswer::Flag::f_data;
+		sendData = button->data;
+	}
+	const auto withPassword = password.has_value();
+	if (withPassword) {
+		flags |= MTPmessages_GetBotCallbackAnswer::Flag::f_password;
+	}
+	const auto weak = base::make_weak(controller);
+	const auto show = controller->uiShow();
+	button->requestId = api->request(MTPmessages_GetBotCallbackAnswer(
+		MTP_flags(flags),
+		history->peer->input(),
+		MTP_int(item->id),
+		MTP_bytes(sendData),
+		password ? password->result : MTP_inputCheckPasswordEmpty()
+	)).done([=](const MTPmessages_BotCallbackAnswer &result) {
+		const auto guard = gsl::finally([&] {
+			if (done) {
+				done();
+			}
+		});
+		const auto item = owner->message(fullId);
+		if (!item) {
+			return;
+		}
+		if (const auto button = getButton()) {
+			button->requestId = 0;
+			owner->requestItemRepaint(item);
+		}
+		const auto &data = result.data();
+		const auto message = data.vmessage()
+			? qs(*data.vmessage())
+			: QString();
+		const auto link = data.vurl() ? qs(*data.vurl()) : QString();
+		const auto showAlert = data.is_alert();
+
+		if (!message.isEmpty()) {
+			if (!show->valid()) {
+				return;
+			} else if (showAlert) {
+				show->showBox(Ui::MakeInformBox(message));
+			} else {
+				if (withPassword) {
+					show->hideLayer();
+				}
+				show->showToast(message);
+			}
+		} else if (!link.isEmpty()) {
+			if (!isGame) {
+				UrlClickHandler::Open(link);
+				return;
+			}
+			BotGameUrlClickHandler(bot, link).onClick({
+				Qt::LeftButton,
+				QVariant::fromValue(ClickHandlerContext{
+					.itemId = item->fullId(),
+					.sessionWindow = weak,
+				}),
+			});
+			session->sendProgressManager().update(
+				history,
+				Api::SendProgressType::PlayGame);
+		} else if (withPassword) {
+			show->hideLayer();
+		}
+	}).fail([=](const MTP::Error &error) {
+		const auto guard = gsl::finally([&] {
+			if (handleError) {
+				handleError(error.type());
+			}
+		});
+		const auto item = owner->message(fullId);
+		if (!item) {
+			return;
+		}
+		// Show error?
+		if (const auto button = getButton()) {
+			button->requestId = 0;
+			owner->requestItemRepaint(item);
+		}
+	}).send();
+
+	session->changes().messageUpdated(
+		item,
+		Data::MessageUpdate::Flag::BotCallbackSent
+	);
+}
+
+void HideSingleUseKeyboard(
+		not_null<Window::SessionController*> controller,
+		not_null<HistoryItem*> item) {
+	controller->content()->hideSingleUseKeyboard(item->fullId());
+}
+
+} // namespace
+
+void SendBotCallbackData(
+		not_null<Window::SessionController*> controller,
+		not_null<HistoryItem*> item,
+		int row,
+		int column) {
+	SendBotCallbackData(controller, item, row, column, std::nullopt);
+}
+
+void SendBotCallbackDataWithPassword(
+		not_null<Window::SessionController*> controller,
+		not_null<HistoryItem*> item,
+		int row,
+		int column) {
+	if (!item->isRegular()) {
+		return;
+	}
+	const auto history = item->history();
+	const auto session = &history->session();
+	const auto owner = &history->owner();
+	const auto api = &session->api();
+	const auto fullId = item->fullId();
+	const auto getButton = [=] {
+		return HistoryMessageMarkupButton::Get(
+			owner,
+			fullId,
+			row,
+			column);
+	};
+	const auto button = getButton();
+	if (!button || button->requestId) {
+		return;
+	}
+	api->cloudPassword().reload();
+	const auto weak = base::make_weak(controller);
+	const auto show = controller->uiShow();
+	SendBotCallbackData(controller, item, row, column, {}, {}, [=](
+			const QString &error) {
+		auto box = PrePasswordErrorBox(
+			error,
+			session,
+			tr::lng_bots_password_confirm_check_about(
+				tr::now,
+				tr::marked));
+		if (box) {
+			show->showBox(std::move(box), Ui::LayerOption::CloseOther);
+		} else {
+			auto lifetime = std::make_shared<rpl::lifetime>();
+			button->requestId = -1;
+			api->cloudPassword().state(
+			) | rpl::take(
+				1
+			) | rpl::on_next([=](const Core::CloudPasswordState &state) mutable {
+				if (lifetime) {
+					base::take(lifetime)->destroy();
+				}
+				if (const auto button = getButton()) {
+					if (button->requestId == -1) {
+						button->requestId = 0;
+					}
+				} else {
+					return;
+				}
+				auto fields = PasscodeBox::CloudFields::From(state);
+				fields.customTitle = tr::lng_bots_password_confirm_title();
+				fields.customDescription
+					= tr::lng_bots_password_confirm_description(tr::now);
+				fields.customSubmitButton = tr::lng_passcode_submit();
+				fields.customCheckCallback = [=](
+						const Core::CloudPasswordResult &result,
+						base::weak_qptr<PasscodeBox> box) {
+					if (const auto button = getButton()) {
+						if (button->requestId) {
+							return;
+						}
+					} else {
+						return;
+					}
+					if (const auto item = owner->message(fullId)) {
+						const auto strongController = weak.get();
+						if (!strongController) {
+							return;
+						}
+						SendBotCallbackData(strongController, item, row, column, result, [=] {
+							if (box) {
+								box->closeBox();
+							}
+						}, [=](const QString &error) {
+							if (box) {
+								box->handleCustomCheckError(error);
+							}
+						});
+					}
+				};
+				auto object = Box<PasscodeBox>(session, fields);
+				show->showBox(std::move(object), Ui::LayerOption::CloseOther);
+			}, *lifetime);
+		}
+	});
+}
+
+bool SwitchInlineBotButtonReceived(
+		not_null<Window::SessionController*> controller,
+		const QByteArray &queryWithPeerTypes,
+		UserData *samePeerBot,
+		MsgId samePeerReplyTo) {
+	return controller->content()->notify_switchInlineBotButtonReceived(
+		QString::fromUtf8(queryWithPeerTypes),
+		samePeerBot,
+		samePeerReplyTo);
+}
+
+void ActivateBotCommand(ClickHandlerContext context, int row, int column) {
+	const auto strong = context.sessionWindow.get();
+	if (!strong) {
+		return;
+	}
+	const auto controller = not_null{ strong };
+	const auto item = controller->session().data().message(context.itemId);
+	if (!item) {
+		return;
+	}
+	const auto button = HistoryMessageMarkupButton::Get(
+		&item->history()->owner(),
+		item->fullId(),
+		row,
+		column);
+	if (!button) {
+		return;
+	}
+
+	using ButtonType = HistoryMessageMarkupButton::Type;
+	switch (button->type) {
+	case ButtonType::Default: {
+		// Copy string before passing it to the sending method
+		// because the original button can be destroyed inside.
+		const auto replyTo = item->isRegular()
+			? item->fullId()
+			: FullMsgId();
+		controller->content()->sendBotCommand({
+			.peer = item->history()->peer,
+			.command = QString(button->text),
+			.context = item->fullId(),
+			.replyTo = { replyTo },
+		});
+	} break;
+
+	case ButtonType::Callback:
+	case ButtonType::Game: {
+		SendBotCallbackData(controller, item, row, column);
+	} break;
+
+	case ButtonType::CallbackWithPassword: {
+		SendBotCallbackDataWithPassword(controller, item, row, column);
+	} break;
+
+	case ButtonType::Buy: {
+		Payments::CheckoutProcess::Start(
+			item,
+			Payments::Mode::Payment,
+			crl::guard(controller, [=](auto) {
+				controller->widget()->activate();
+			}),
+			Payments::ProcessNonPanelPaymentFormFactory(controller, item));
+	} break;
+
+	case ButtonType::Url: {
+		auto url = QString::fromUtf8(button->data);
+		auto skipConfirmation = false;
+		if (const auto bot = item->getMessageBot()) {
+			if (bot->isVerified()) {
+				skipConfirmation = true;
+			}
+		}
+		const auto variant = QVariant::fromValue(context);
+		if (skipConfirmation) {
+			UrlClickHandler::Open(url, variant);
+		} else {
+			HiddenUrlClickHandler::Open(url, variant);
+		}
+	} break;
+
+	case ButtonType::RequestLocation: {
+		HideSingleUseKeyboard(controller, item);
+		controller->show(
+			Ui::MakeInformBox(tr::lng_bot_share_location_unavailable()));
+	} break;
+
+	case ButtonType::RequestPhone: {
+		HideSingleUseKeyboard(controller, item);
+		const auto itemId = item->fullId();
+		const auto topicRootId = item->topicRootId();
+		const auto history = item->history();
+		controller->show(Ui::MakeConfirmBox({
+			.text = tr::lng_bot_share_phone(),
+			.confirmed = [=] {
+				controller->showPeerHistory(
+					history,
+					Window::SectionShow::Way::Forward,
+					ShowAtTheEndMsgId);
+				auto action = Api::SendAction(history);
+				action.clearDraft = false;
+				action.replyTo = {
+					.messageId = itemId,
+					.topicRootId = topicRootId,
+				};
+				history->session().api().shareContact(
+					history->session().user(),
+					action);
+			},
+			.confirmText = tr::lng_bot_share_phone_confirm(),
+		}));
+	} break;
+
+	case ButtonType::RequestPoll: {
+		HideSingleUseKeyboard(controller, item);
+		auto chosen = PollData::Flags();
+		auto disabled = PollData::Flags();
+		if (!button->data.isEmpty()) {
+			disabled |= PollData::Flag::Quiz;
+			if (button->data[0]) {
+				chosen |= PollData::Flag::Quiz;
+			}
+		}
+		const auto replyTo = FullReplyTo();
+		const auto suggest = SuggestOptions();
+		Window::PeerMenuCreatePoll(
+			controller,
+			item->history()->peer,
+			replyTo,
+			suggest,
+			chosen,
+			disabled);
+	} break;
+
+	case ButtonType::RequestPeer: {
+		HideSingleUseKeyboard(controller, item);
+
+		auto query = RequestPeerQuery();
+		Assert(button->data.size() == sizeof(query));
+		memcpy(&query, button->data.data(), sizeof(query));
+		const auto peer = item->history()->peer;
+		const auto itemId = item->id;
+		const auto id = int32(button->buttonId);
+		const auto chosen = [=](std::vector<not_null<PeerData*>> result) {
+			peer->session().api().request(MTPmessages_SendBotRequestedPeer(
+				peer->input(),
+				MTP_int(itemId),
+				MTP_int(id),
+				MTP_vector_from_range(
+					result | ranges::views::transform([](
+							not_null<PeerData*> peer) {
+						return MTPInputPeer(peer->input());
+					}))
+			)).done([=](const MTPUpdates &result) {
+				peer->session().api().applyUpdates(result);
+			}).send();
+		};
+		if (const auto bot = item->getMessageBot()) {
+			ShowChoosePeerBox(controller, bot, query, chosen);
+		} else {
+			LOG(("API Error: Bot not found for RequestPeer button."));
+		}
+	} break;
+
+	case ButtonType::SwitchInlineSame:
+	case ButtonType::SwitchInline: {
+		if (const auto bot = item->getMessageBot()) {
+			const auto fastSwitchDone = [&] {
+				const auto samePeer = (button->type
+					== ButtonType::SwitchInlineSame);
+				if (samePeer) {
+					SwitchInlineBotButtonReceived(
+						controller,
+						button->data,
+						bot,
+						item->id);
+					return true;
+				} else if (bot->isBot() && bot->botInfo->inlineReturnTo.key) {
+					const auto switched = SwitchInlineBotButtonReceived(
+						controller,
+						button->data);
+					if (switched) {
+						return true;
+					}
+				}
+				return false;
+			}();
+			if (!fastSwitchDone) {
+				const auto query = QString::fromUtf8(button->data);
+				const auto chosen = [=](not_null<Data::Thread*> thread) {
+					return controller->switchInlineQuery(
+						thread,
+						bot,
+						query);
+				};
+				Window::ShowChooseRecipientBox(
+					controller,
+					chosen,
+					tr::lng_inline_switch_choose(),
+					nullptr,
+					button->peerTypes);
+			}
+		}
+	} break;
+
+	case ButtonType::Auth:
+		UrlAuthBox::Activate(item, row, column);
+		break;
+
+	case ButtonType::UserProfile: {
+		const auto session = &item->history()->session();
+		const auto userId = UserId(button->data.toULongLong());
+		if (const auto user = session->data().userLoaded(userId)) {
+			controller->showPeerInfo(user);
+		}
+	} break;
+
+	case ButtonType::WebView: {
+		if (const auto bot = item->getMessageBot()) {
+			bot->session().attachWebView().open({
+				.bot = bot,
+				.context = { .controller = controller },
+				.button = { .text = button->text, .url = button->data },
+				.source = InlineBots::WebViewSourceButton{ .simple = false },
+			});
+		}
+	} break;
+
+	case ButtonType::SimpleWebView: {
+		if (const auto bot = item->getMessageBot()) {
+			bot->session().attachWebView().open({
+				.bot = bot,
+				.context = { .controller = controller },
+				.button = { .text = button->text, .url = button->data },
+				.source = InlineBots::WebViewSourceButton{ .simple = true },
+			});
+		}
+	} break;
+
+	case ButtonType::CopyText: {
+		const auto text = QString::fromUtf8(button->data);
+		if (!text.isEmpty()) {
+			QGuiApplication::clipboard()->setText(text);
+			controller->showToast(tr::lng_text_copied(tr::now));
+		}
+	} break;
+
+	case ButtonType::SuggestAccept: {
+		Api::AcceptClickHandler(item)->onClick(ClickContext{
+			Qt::LeftButton,
+			QVariant::fromValue(context),
+		});
+	} break;
+
+	case ButtonType::SuggestDecline: {
+		Api::DeclineClickHandler(item)->onClick(ClickContext{
+			Qt::LeftButton,
+			QVariant::fromValue(context),
+		});
+	} break;
+
+	case ButtonType::SuggestChange: {
+		Api::SuggestChangesClickHandler(item)->onClick(ClickContext{
+			Qt::LeftButton,
+			QVariant::fromValue(context),
+		});
+	} break;
+	}
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_bot.h

@@ -0,0 +1,39 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+struct ClickHandlerContext;
+class HistoryItem;
+
+namespace Window {
+class SessionController;
+} // namespace Window
+
+namespace Api {
+
+void SendBotCallbackData(
+	not_null<Window::SessionController*> controller,
+	not_null<HistoryItem*> item,
+	int row,
+	int column);
+
+void SendBotCallbackDataWithPassword(
+	not_null<Window::SessionController*> controller,
+	not_null<HistoryItem*> item,
+	int row,
+	int column);
+
+bool SwitchInlineBotButtonReceived(
+	not_null<Window::SessionController*> controller,
+	const QByteArray &queryWithPeerTypes,
+	UserData *samePeerBot = nullptr,
+	MsgId samePeerReplyTo = 0);
+
+void ActivateBotCommand(ClickHandlerContext context, int row, int column);
+
+} // namespace Api

Telegram/SourceFiles/api/api_chat_filters.cpp

@@ -0,0 +1,912 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_chat_filters.h"
+
+#include "api/api_text_entities.h"
+#include "apiwrap.h"
+#include "base/event_filter.h"
+#include "boxes/peer_list_box.h"
+#include "boxes/premium_limits_box.h"
+#include "boxes/filters/edit_filter_links.h" // FilterChatStatusText
+#include "core/application.h"
+#include "core/core_settings.h"
+#include "core/ui_integration.h"
+#include "data/data_channel.h"
+#include "data/data_chat.h"
+#include "data/data_chat_filters.h"
+#include "data/data_peer.h"
+#include "data/data_session.h"
+#include "history/history.h"
+#include "lang/lang_keys.h"
+#include "main/main_session.h"
+#include "ui/boxes/confirm_box.h"
+#include "ui/controls/filter_link_header.h"
+#include "ui/text/text_utilities.h"
+#include "ui/toast/toast.h"
+#include "ui/widgets/buttons.h"
+#include "ui/filter_icons.h"
+#include "ui/vertical_list.h"
+#include "ui/ui_utility.h"
+#include "window/window_session_controller.h"
+#include "styles/style_filter_icons.h"
+#include "styles/style_layers.h"
+#include "styles/style_settings.h"
+
+namespace Api {
+namespace {
+
+enum class ToggleAction {
+	Adding,
+	Removing,
+};
+
+class ToggleChatsController final
+	: public PeerListController
+	, public base::has_weak_ptr {
+public:
+	ToggleChatsController(
+		not_null<Window::SessionController*> window,
+		ToggleAction action,
+		Data::ChatFilterTitle title,
+		std::vector<not_null<PeerData*>> chats,
+		std::vector<not_null<PeerData*>> additional);
+
+	void prepare() override;
+	void rowClicked(not_null<PeerListRow*> row) override;
+	Main::Session &session() const override;
+
+	[[nodiscard]] auto selectedValue() const
+		-> rpl::producer<base::flat_set<not_null<PeerData*>>>;
+
+	void adjust(int minHeight, int maxHeight, int addedTopHeight);
+	void setRealContentHeight(rpl::producer<int> value);
+	rpl::producer<int> boxHeightValue() const override;
+
+private:
+	void setupAboveWidget();
+	void setupBelowWidget();
+	void initDesiredHeightValue();
+	void toggleAllSelected(bool select);
+
+	const not_null<Window::SessionController*> _window;
+	Ui::RpWidget *_addedTopWidget = nullptr;
+	Ui::RpWidget *_addedBottomWidget = nullptr;
+
+	ToggleAction _action = ToggleAction::Adding;
+	base::flat_set<not_null<PeerData*>> _checkable;
+	std::vector<not_null<PeerData*>> _chats;
+	std::vector<not_null<PeerData*>> _additional;
+	rpl::variable<base::flat_set<not_null<PeerData*>>> _selected;
+
+	int _minTopHeight = 0;
+	rpl::variable<int> _maxTopHeight;
+	rpl::variable<int> _aboveHeight;
+	rpl::variable<int> _belowHeight;
+	rpl::variable<int> _desiredHeight;
+
+	base::unique_qptr<Ui::PopupMenu> _menu;
+
+	rpl::lifetime _lifetime;
+
+};
+
+[[nodiscard]] tr::phrase<> TitleText(Ui::FilterLinkHeaderType type) {
+	using Type = Ui::FilterLinkHeaderType;
+	switch (type) {
+	case Type::AddingFilter: return tr::lng_filters_by_link_title;
+	case Type::AddingChats: return tr::lng_filters_by_link_more;
+	case Type::AllAdded: return tr::lng_filters_by_link_already;
+	case Type::Removing: return tr::lng_filters_by_link_remove;
+	}
+	Unexpected("Ui::FilterLinkHeaderType in TitleText.");
+}
+
+[[nodiscard]] TextWithEntities AboutText(
+		Ui::FilterLinkHeaderType type,
+		TextWithEntities title) {
+	using Type = Ui::FilterLinkHeaderType;
+	auto boldTitle = Ui::Text::Wrapped(title, EntityType::Bold);
+	return (type == Type::AddingFilter)
+		? tr::lng_filters_by_link_sure(
+			tr::now,
+			lt_folder,
+			std::move(boldTitle),
+			tr::marked)
+		: (type == Type::AddingChats)
+		? tr::lng_filters_by_link_more_sure(
+			tr::now,
+			lt_folder,
+			std::move(boldTitle),
+			tr::marked)
+		: (type == Type::AllAdded)
+		? tr::lng_filters_by_link_already_about(
+			tr::now,
+			lt_folder,
+			std::move(boldTitle),
+			tr::marked)
+		: tr::lng_filters_by_link_remove_sure(
+			tr::now,
+			lt_folder,
+			std::move(boldTitle),
+			tr::marked);
+}
+
+void InitFilterLinkHeader(
+		not_null<PeerListBox*> box,
+		Fn<void(int minHeight, int maxHeight, int addedTopHeight)> adjust,
+		Ui::FilterLinkHeaderType type,
+		Data::ChatFilterTitle title,
+		QString iconEmoji,
+		rpl::producer<int> count,
+		bool horizontalFilters) {
+	const auto icon = Ui::LookupFilterIcon(
+		Ui::LookupFilterIconByEmoji(
+			iconEmoji
+		).value_or(Ui::FilterIcon::Custom)).active;
+	const auto isStatic = title.isStatic;
+	auto header = Ui::MakeFilterLinkHeader(box, {
+		.type = type,
+		.title = TitleText(type)(tr::now),
+		.about = AboutText(type, title.text),
+		.aboutContext = Core::TextContext({
+			.session = &box->peerListUiShow()->session(),
+			.customEmojiLoopLimit = isStatic ? -1 : 0,
+		}),
+		.folderTitle = title.text,
+		.folderIcon = icon,
+		.badge = (type == Ui::FilterLinkHeaderType::AddingChats
+			? std::move(count)
+			: rpl::single(0)),
+		.horizontalFilters = horizontalFilters,
+	});
+	const auto widget = header.widget;
+	widget->resizeToWidth(st::boxWideWidth);
+	Ui::SendPendingMoveResizeEvents(widget);
+
+	const auto min = widget->minimumHeight(), max = widget->maximumHeight();
+	widget->resize(st::boxWideWidth, max);
+
+	box->setAddedTopScrollSkip(max);
+	std::move(
+		header.wheelEvents
+	) | rpl::on_next([=](not_null<QWheelEvent*> e) {
+		box->sendScrollViewportEvent(e);
+	}, widget->lifetime());
+
+	std::move(
+		header.closeRequests
+	) | rpl::on_next([=] {
+		box->closeBox();
+	}, widget->lifetime());
+
+	struct State {
+		bool processing = false;
+		int addedTopHeight = 0;
+	};
+	const auto state = widget->lifetime().make_state<State>();
+
+	box->scrolls(
+	) | rpl::filter([=] {
+		return !state->processing;
+	}) | rpl::on_next([=] {
+		state->processing = true;
+		const auto guard = gsl::finally([&] { state->processing = false; });
+
+		const auto top = box->scrollTop();
+		const auto headerHeight = std::max(max - top, min);
+		const auto addedTopHeight = max - headerHeight;
+		widget->resize(widget->width(), headerHeight);
+		if (state->addedTopHeight < addedTopHeight) {
+			adjust(min, max, addedTopHeight);
+			box->setAddedTopScrollSkip(headerHeight);
+		} else {
+			box->setAddedTopScrollSkip(headerHeight);
+			adjust(min, max, addedTopHeight);
+		}
+		state->addedTopHeight = addedTopHeight;
+		box->peerListRefreshRows();
+	}, widget->lifetime());
+
+	box->setNoContentMargin(true);
+	adjust(min, max, 0);
+}
+
+void ImportInvite(
+		const QString &slug,
+		FilterId filterId,
+		const base::flat_set<not_null<PeerData*>> &peers,
+		Fn<void()> done,
+		Fn<void(QString)> fail) {
+	Expects(!peers.empty());
+
+	const auto peer = peers.front();
+	const auto api = &peer->session().api();
+	const auto callback = [=](const MTPUpdates &result) {
+		api->applyUpdates(result);
+		if (slug.isEmpty()) {
+			peer->owner().chatsFilters().moreChatsHide(filterId, true);
+		}
+		done();
+	};
+	const auto error = [=](const MTP::Error &error) {
+		fail(error.type());
+	};
+	auto inputs = peers | ranges::views::transform([](auto peer) {
+		return MTPInputPeer(peer->input());
+	}) | ranges::to<QVector<MTPInputPeer>>();
+	if (!slug.isEmpty()) {
+		api->request(MTPchatlists_JoinChatlistInvite(
+			MTP_string(slug),
+			MTP_vector<MTPInputPeer>(std::move(inputs))
+		)).done(callback).fail(error).handleFloodErrors().send();
+	} else {
+		api->request(MTPchatlists_JoinChatlistUpdates(
+			MTP_inputChatlistDialogFilter(MTP_int(filterId)),
+			MTP_vector<MTPInputPeer>(std::move(inputs))
+		)).done(callback).fail(error).handleFloodErrors().send();
+	}
+}
+
+ToggleChatsController::ToggleChatsController(
+	not_null<Window::SessionController*> window,
+	ToggleAction action,
+	Data::ChatFilterTitle title,
+	std::vector<not_null<PeerData*>> chats,
+	std::vector<not_null<PeerData*>> additional)
+: _window(window)
+, _action(action)
+, _chats(std::move(chats))
+, _additional(std::move(additional)) {
+	setStyleOverrides(&st::filterLinkChatsList);
+}
+
+void ToggleChatsController::prepare() {
+	auto selected = base::flat_set<not_null<PeerData*>>();
+	const auto disabled = [](not_null<PeerData*> peer) {
+		return peer->isChat()
+			? peer->asChat()->isForbidden()
+			: peer->isChannel()
+			? peer->asChannel()->isForbidden()
+			: false;
+	};
+	const auto add = [&](not_null<PeerData*> peer, bool additional = false) {
+		const auto disable = disabled(peer);
+		auto row = (additional || !disable)
+			? std::make_unique<PeerListRow>(peer)
+			: MakeFilterChatRow(
+				peer,
+				tr::lng_filters_link_inaccessible(tr::now),
+				true);
+		if (delegate()->peerListFindRow(peer->id.value)) {
+			return;
+		}
+		const auto raw = row.get();
+		delegate()->peerListAppendRow(std::move(row));
+		if (!disable
+			&& (!additional || _action == ToggleAction::Removing)) {
+			_checkable.emplace(peer);
+			if (const auto status = FilterChatStatusText(peer)
+				; !status.isEmpty()) {
+				raw->setCustomStatus(status);
+			}
+		}
+		if (disable) {
+		} else if (!additional) {
+			delegate()->peerListSetRowChecked(raw, true);
+			raw->finishCheckedAnimation();
+			selected.emplace(peer);
+		} else if (_action == ToggleAction::Adding) {
+			raw->setDisabledState(PeerListRow::State::DisabledChecked);
+			raw->setCustomStatus(peer->isBroadcast()
+				? tr::lng_filters_link_already_channel(tr::now)
+				: tr::lng_filters_link_already_group(tr::now));
+		}
+	};
+	for (const auto &peer : _chats) {
+		if (!disabled(peer)) {
+			add(peer);
+		}
+	}
+	for (const auto &peer : _additional) {
+		add(peer, true);
+	}
+	for (const auto &peer : _chats) {
+		if (disabled(peer)) {
+			add(peer);
+		}
+	}
+	setupAboveWidget();
+	setupBelowWidget();
+	initDesiredHeightValue();
+	delegate()->peerListRefreshRows();
+	_selected = std::move(selected);
+}
+
+void ToggleChatsController::rowClicked(not_null<PeerListRow*> row) {
+	const auto peer = row->peer();
+	if (!_checkable.contains(peer)) {
+		return;
+	}
+	const auto checked = row->checked();
+	auto selected = _selected.current();
+	delegate()->peerListSetRowChecked(row, !checked);
+	if (checked) {
+		selected.remove(peer);
+	} else {
+		selected.emplace(peer);
+	}
+	_selected = std::move(selected);
+}
+
+void ToggleChatsController::setupAboveWidget() {
+	using namespace Settings;
+
+	auto wrap = object_ptr<Ui::VerticalLayout>((QWidget*)nullptr);
+	const auto container = wrap.data();
+
+	_addedTopWidget = container->add(object_ptr<Ui::RpWidget>(container));
+	const auto realAbove = container->add(
+		object_ptr<Ui::VerticalLayout>(container));
+	Ui::AddDivider(realAbove);
+	const auto totalCount = [&] {
+		if (_chats.empty()) {
+			return _additional.size();
+		} else if (_additional.empty()) {
+			return _chats.size();
+		}
+		auto result = _chats.size();
+		for (const auto &peer : _additional) {
+			if (!ranges::contains(_chats, peer)) {
+				++result;
+			}
+		}
+		return result;
+	};
+	const auto count = (_action == ToggleAction::Removing)
+		? totalCount()
+		: _chats.empty()
+		? _additional.size()
+		: _chats.size();
+	const auto selectableCount = int(_checkable.size());
+	auto selectedCount = _selected.value(
+	) | rpl::map([](const base::flat_set<not_null<PeerData*>> &selected) {
+		return int(selected.size());
+	});
+	AddFilterSubtitleWithToggles(
+		realAbove,
+		(_action == ToggleAction::Removing
+			? tr::lng_filters_by_link_quit
+			: _chats.empty()
+			? tr::lng_filters_by_link_in
+			: tr::lng_filters_by_link_join)(
+				lt_count,
+				rpl::single(float64(count))),
+		selectableCount,
+		std::move(selectedCount),
+		[=](bool select) { toggleAllSelected(select); });
+
+	_aboveHeight = realAbove->heightValue();
+	delegate()->peerListSetAboveWidget(std::move(wrap));
+}
+
+void ToggleChatsController::toggleAllSelected(bool select) {
+	auto selected = _selected.current();
+	if (!select) {
+		if (selected.empty()) {
+			return;
+		}
+		for (const auto &peer : selected) {
+			const auto row = delegate()->peerListFindRow(peer->id.value);
+			Assert(row != nullptr);
+			delegate()->peerListSetRowChecked(row, false);
+		}
+		selected = {};
+	} else {
+		const auto count = delegate()->peerListFullRowsCount();
+		for (auto i = 0; i != count; ++i) {
+			const auto row = delegate()->peerListRowAt(i);
+			const auto peer = row->peer();
+			if (_action != ToggleAction::Adding ||
+				!ranges::contains(_additional, peer)) {
+				delegate()->peerListSetRowChecked(row, true);
+				selected.emplace(peer);
+			}
+		}
+	}
+	_selected = std::move(selected);
+}
+
+void ToggleChatsController::setupBelowWidget() {
+	if (_chats.empty()) {
+		auto widget = object_ptr<Ui::RpWidget>((QWidget*)nullptr);
+		_addedBottomWidget = widget.data();
+		delegate()->peerListSetBelowWidget(std::move(widget));
+		return;
+	}
+	auto layout = object_ptr<Ui::VerticalLayout>((QWidget*)nullptr);
+	const auto raw = layout.data();
+	auto widget = object_ptr<Ui::DividerLabel>(
+		(QWidget*)nullptr,
+		std::move(layout),
+		st::defaultBoxDividerLabelPadding);
+	raw->add(object_ptr<Ui::FlatLabel>(
+		raw,
+		(_action == ToggleAction::Removing
+			? tr::lng_filters_by_link_about_quit
+			: tr::lng_filters_by_link_about)(tr::now),
+		st::boxDividerLabel));
+	_addedBottomWidget = raw->add(object_ptr<Ui::RpWidget>(raw));
+	_belowHeight = widget->heightValue() | rpl::map([=](int value) {
+		return value - _addedBottomWidget->height();
+	});
+	delegate()->peerListSetBelowWidget(std::move(widget));
+}
+
+Main::Session &ToggleChatsController::session() const {
+	return _window->session();
+}
+
+auto ToggleChatsController::selectedValue() const
+-> rpl::producer<base::flat_set<not_null<PeerData*>>> {
+	return _selected.value();
+}
+
+void ToggleChatsController::adjust(
+		int minHeight,
+		int maxHeight,
+		int addedTopHeight) {
+	Expects(addedTopHeight >= 0);
+
+	_addedTopWidget->resize(_addedTopWidget->width(), addedTopHeight);
+	_minTopHeight = minHeight;
+	_maxTopHeight = maxHeight;
+}
+
+void ToggleChatsController::setRealContentHeight(rpl::producer<int> value) {
+	std::move(
+		value
+	) | rpl::on_next([=](int height) {
+		const auto desired = _desiredHeight.current();
+		if (height <= computeListSt().item.height) {
+			return;
+		} else if (height >= desired) {
+			_addedBottomWidget->resize(_addedBottomWidget->width(), 0);
+		} else {
+			const auto available = desired - height;
+			const auto required = _maxTopHeight.current() - _minTopHeight;
+			const auto added = required - available;
+			_addedBottomWidget->resize(
+				_addedBottomWidget->width(),
+				std::max(added, 0));
+		}
+	}, _lifetime);
+}
+
+void ToggleChatsController::initDesiredHeightValue() {
+	using namespace rpl::mappers;
+
+	const auto &st = computeListSt();
+	const auto count = int(delegate()->peerListFullRowsCount());
+	const auto middle = st.padding.top()
+		+ (count * st.item.height)
+		+ st.padding.bottom();
+	_desiredHeight = rpl::combine(
+		_maxTopHeight.value(),
+		_aboveHeight.value(),
+		_belowHeight.value(),
+		_1 + _2 + middle + _3);
+}
+
+rpl::producer<int> ToggleChatsController::boxHeightValue() const {
+	return _desiredHeight.value() | rpl::map([=](int value) {
+		return std::min(value, st::boxMaxListHeight);
+	});
+}
+
+void ShowImportError(
+		not_null<Window::SessionController*> window,
+		FilterId id,
+		int added,
+		const QString &error) {
+	const auto session = &window->session();
+	const auto &list = session->data().chatsFilters().list();
+	const auto i = ranges::find(list, id, &Data::ChatFilter::id);
+	const auto count = added
+		+ ((i != end(list)) ? int(i->always().size()) : 0);
+	if (error == u"CHANNELS_TOO_MUCH"_q) {
+		window->show(Box(ChannelsLimitBox, session));
+	} else if (error == u"FILTER_INCLUDE_TOO_MUCH"_q) {
+		window->show(Box(FilterChatsLimitBox, session, count, true));
+	} else if (error == u"CHATLISTS_TOO_MUCH"_q) {
+		window->show(Box(ShareableFiltersLimitBox, session));
+	} else {
+		window->showToast((error == u"INVITE_SLUG_EXPIRED"_q)
+			? tr::lng_group_invite_bad_link(tr::now)
+			: error.startsWith(u"FLOOD_WAIT_"_q)
+			? tr::lng_flood_error(tr::now)
+			: error);
+	}
+}
+
+void ShowImportToast(
+		base::weak_ptr<Window::SessionController> weak,
+		Data::ChatFilterTitle title,
+		Ui::FilterLinkHeaderType type,
+		int added) {
+	const auto strong = weak.get();
+	if (!strong) {
+		return;
+	}
+	const auto created = (type == Ui::FilterLinkHeaderType::AddingFilter);
+	const auto phrase = created
+		? tr::lng_filters_added_title
+		: tr::lng_filters_updated_title;
+	auto text = Ui::Text::Wrapped(
+		phrase(tr::now, lt_folder, title.text, tr::marked),
+		EntityType::Bold);
+	if (added > 0) {
+		const auto phrase = created
+			? tr::lng_filters_added_also
+			: tr::lng_filters_updated_also;
+		text.append('\n').append(phrase(tr::now, lt_count, added));
+	}
+	const auto isStatic = title.isStatic;
+	strong->showToast({
+		.text = std::move(text),
+		.textContext = Core::TextContext({
+			.session = &strong->session(),
+			.customEmojiLoopLimit = isStatic ? -1 : 0,
+		})
+	});
+}
+
+void HandleEnterInBox(not_null<Ui::BoxContent*> box) {
+	const auto isEnter = [=](not_null<QEvent*> event) {
+		if (event->type() == QEvent::KeyPress) {
+			if (const auto k = static_cast<QKeyEvent*>(event.get())) {
+				return (k->key() == Qt::Key_Enter)
+					|| (k->key() == Qt::Key_Return);
+			}
+		}
+		return false;
+	};
+
+	base::install_event_filter(box, [=](not_null<QEvent*> event) {
+		if (isEnter(event)) {
+			box->triggerButton(0);
+			return base::EventFilterResult::Cancel;
+		}
+		return base::EventFilterResult::Continue;
+	});
+}
+
+void ProcessFilterInvite(
+		base::weak_ptr<Window::SessionController> weak,
+		const QString &slug,
+		FilterId filterId,
+		Data::ChatFilterTitle title,
+		QString iconEmoji,
+		std::vector<not_null<PeerData*>> peers,
+		std::vector<not_null<PeerData*>> already) {
+	const auto strong = weak.get();
+	if (!strong) {
+		return;
+	}
+	Core::App().hideMediaView();
+	if (peers.empty() && !filterId) {
+		strong->showToast(tr::lng_group_invite_bad_link(tr::now));
+		return;
+	}
+	const auto fullyAdded = (peers.empty() && filterId);
+	auto controller = std::make_unique<ToggleChatsController>(
+		strong,
+		ToggleAction::Adding,
+		title,
+		std::move(peers),
+		std::move(already));
+	const auto horizontalFilters = !strong->enoughSpaceForFilters()
+		|| Core::App().settings().chatFiltersHorizontal();
+	const auto raw = controller.get();
+	auto initBox = [=](not_null<PeerListBox*> box) {
+		box->setStyle(st::filterInviteBox);
+
+		using Type = Ui::FilterLinkHeaderType;
+		const auto type = fullyAdded
+			? Type::AllAdded
+			: !filterId
+			? Type::AddingFilter
+			: Type::AddingChats;
+		auto badge = raw->selectedValue(
+		) | rpl::map([=](const base::flat_set<not_null<PeerData*>> &peers) {
+			return int(peers.size());
+		});
+		InitFilterLinkHeader(box, [=](int min, int max, int addedTop) {
+			raw->adjust(min, max, addedTop);
+		}, type, title, iconEmoji, rpl::duplicate(badge), horizontalFilters);
+
+		raw->setRealContentHeight(box->heightValue());
+
+		const auto isStatic = title.isStatic;
+		auto owned = Ui::FilterLinkProcessButton(
+			box,
+			type,
+			title.text,
+			Core::TextContext({
+				.session = &strong->session(),
+				.customEmojiLoopLimit = isStatic ? -1 : 0,
+			}),
+			std::move(badge));
+
+		const auto button = owned.data();
+		box->widthValue(
+		) | rpl::on_next([=](int width) {
+			const auto &padding = st::filterInviteBox.buttonPadding;
+			button->resizeToWidth(width
+				- padding.left()
+				- padding.right());
+			button->moveToLeft(padding.left(), padding.top());
+		}, button->lifetime());
+
+		box->addButton(std::move(owned));
+
+		HandleEnterInBox(box);
+
+		struct State {
+			bool importing = false;
+		};
+		const auto state = box->lifetime().make_state<State>();
+
+		raw->selectedValue(
+		) | rpl::on_next([=](
+				base::flat_set<not_null<PeerData*>> &&peers) {
+			button->setClickedCallback([=] {
+				if (peers.empty()) {
+					box->closeBox();
+				} else if (!state->importing) {
+					state->importing = true;
+					const auto added = int(peers.size());
+					ImportInvite(slug, filterId, peers, crl::guard(box, [=] {
+						ShowImportToast(weak, title, type, peers.size());
+						box->closeBox();
+					}), crl::guard(box, [=](QString text) {
+						if (const auto strong = weak.get()) {
+							ShowImportError(strong, filterId, added, text);
+						}
+						state->importing = false;
+					}));
+				}
+			});
+		}, box->lifetime());
+	};
+	strong->show(
+		Box<PeerListBox>(std::move(controller), std::move(initBox)));
+}
+
+void ProcessFilterInvite(
+		base::weak_ptr<Window::SessionController> weak,
+		const QString &slug,
+		FilterId filterId,
+		std::vector<not_null<PeerData*>> peers,
+		std::vector<not_null<PeerData*>> already) {
+	const auto strong = weak.get();
+	if (!strong) {
+		return;
+	}
+	Core::App().hideMediaView();
+	const auto &list = strong->session().data().chatsFilters().list();
+	const auto it = ranges::find(list, filterId, &Data::ChatFilter::id);
+	if (it == end(list)) {
+		strong->showToast(u"Filter not found :shrug:"_q);
+		return;
+	}
+	ProcessFilterInvite(
+		weak,
+		slug,
+		filterId,
+		it->title(),
+		it->iconEmoji(),
+		std::move(peers),
+		std::move(already));
+}
+
+} // namespace
+
+void SaveNewFilterPinned(
+		not_null<Main::Session*> session,
+		FilterId filterId) {
+	const auto &order = session->data().pinnedChatsOrder(filterId);
+	auto &filters = session->data().chatsFilters();
+	const auto &filter = filters.applyUpdatedPinned(filterId, order);
+	session->api().request(MTPmessages_UpdateDialogFilter(
+		MTP_flags(MTPmessages_UpdateDialogFilter::Flag::f_filter),
+		MTP_int(filterId),
+		filter.tl()
+	)).send();
+}
+
+void CheckFilterInvite(
+		not_null<Window::SessionController*> controller,
+		const QString &slug) {
+	const auto session = &controller->session();
+	const auto weak = base::make_weak(controller);
+	session->api().checkFilterInvite(slug, [=](
+			const MTPchatlists_ChatlistInvite &result) {
+		const auto strong = weak.get();
+		if (!strong) {
+			return;
+		}
+		auto title = Data::ChatFilterTitle();
+		auto iconEmoji = QString();
+		auto filterId = FilterId();
+		auto peers = std::vector<not_null<PeerData*>>();
+		auto already = std::vector<not_null<PeerData*>>();
+		auto &owner = strong->session().data();
+		result.match([&](const auto &data) {
+			owner.processUsers(data.vusers());
+			owner.processChats(data.vchats());
+		});
+		const auto parseList = [&](const MTPVector<MTPPeer> &list) {
+			auto result = std::vector<not_null<PeerData*>>();
+			result.reserve(list.v.size());
+			for (const auto &peer : list.v) {
+				result.push_back(owner.peer(peerFromMTP(peer)));
+			}
+			return result;
+		};
+		result.match([&](const MTPDchatlists_chatlistInvite &data) {
+			title.text = ParseTextWithEntities(session, data.vtitle());
+			title.isStatic = data.is_title_noanimate();
+			iconEmoji = data.vemoticon().value_or_empty();
+			peers = parseList(data.vpeers());
+		}, [&](const MTPDchatlists_chatlistInviteAlready &data) {
+			filterId = data.vfilter_id().v;
+			peers = parseList(data.vmissing_peers());
+			already = parseList(data.valready_peers());
+		});
+
+		const auto notLoaded = filterId
+			&& !ranges::contains(
+				owner.chatsFilters().list(),
+				filterId,
+				&Data::ChatFilter::id);
+		if (notLoaded) {
+			const auto lifetime = std::make_shared<rpl::lifetime>();
+			owner.chatsFilters().changed(
+			) | rpl::on_next([=] {
+				lifetime->destroy();
+				ProcessFilterInvite(
+					weak,
+					slug,
+					filterId,
+					std::move(peers),
+					std::move(already));
+			}, *lifetime);
+			owner.chatsFilters().reload();
+		} else if (filterId) {
+			ProcessFilterInvite(
+				weak,
+				slug,
+				filterId,
+				std::move(peers),
+				std::move(already));
+		} else {
+			ProcessFilterInvite(
+				weak,
+				slug,
+				filterId,
+				title,
+				iconEmoji,
+				std::move(peers),
+				std::move(already));
+		}
+	}, [=](const MTP::Error &error) {
+		if (error.code() != 400) {
+			return;
+		}
+		ProcessFilterInvite(weak, slug, {}, {}, {}, {}, {});
+	});
+}
+
+void ProcessFilterUpdate(
+		base::weak_ptr<Window::SessionController> weak,
+		FilterId filterId,
+		std::vector<not_null<PeerData*>> missing) {
+	if (const auto strong = missing.empty() ? weak.get() : nullptr) {
+		strong->session().data().chatsFilters().moreChatsHide(filterId);
+		return;
+	}
+	ProcessFilterInvite(weak, QString(), filterId, std::move(missing), {});
+}
+
+void ProcessFilterRemove(
+		base::weak_ptr<Window::SessionController> weak,
+		Data::ChatFilterTitle title,
+		QString iconEmoji,
+		std::vector<not_null<PeerData*>> all,
+		std::vector<not_null<PeerData*>> suggest,
+		Fn<void(std::vector<not_null<PeerData*>>)> done) {
+	const auto strong = weak.get();
+	if (!strong) {
+		return;
+	}
+	Core::App().hideMediaView();
+	if (all.empty() && suggest.empty()) {
+		done({});
+		return;
+	}
+	auto controller = std::make_unique<ToggleChatsController>(
+		strong,
+		ToggleAction::Removing,
+		title,
+		std::move(suggest),
+		std::move(all));
+	const auto horizontalFilters = !strong->enoughSpaceForFilters()
+		|| Core::App().settings().chatFiltersHorizontal();
+	const auto raw = controller.get();
+	auto initBox = [=](not_null<PeerListBox*> box) {
+		box->setStyle(st::filterInviteBox);
+
+		const auto type = Ui::FilterLinkHeaderType::Removing;
+		auto badge = raw->selectedValue(
+		) | rpl::map([=](const base::flat_set<not_null<PeerData*>> &peers) {
+			return int(peers.size());
+		});
+		InitFilterLinkHeader(box, [=](int min, int max, int addedTop) {
+			raw->adjust(min, max, addedTop);
+		}, type, title, iconEmoji, rpl::single(0), horizontalFilters);
+
+		const auto isStatic = title.isStatic;
+		auto owned = Ui::FilterLinkProcessButton(
+			box,
+			type,
+			title.text,
+			Core::TextContext({
+				.session = &strong->session(),
+				.customEmojiLoopLimit = isStatic ? -1 : 0,
+			}),
+			std::move(badge));
+
+		const auto button = owned.data();
+		box->widthValue(
+		) | rpl::on_next([=](int width) {
+			const auto &padding = st::filterInviteBox.buttonPadding;
+			button->resizeToWidth(width
+				- padding.left()
+				- padding.right());
+			button->moveToLeft(padding.left(), padding.top());
+		}, button->lifetime());
+
+		box->addButton(std::move(owned));
+
+		HandleEnterInBox(box);
+
+		raw->selectedValue(
+		) | rpl::on_next([=](
+				base::flat_set<not_null<PeerData*>> &&peers) {
+			button->setClickedCallback([=] {
+				done(peers | ranges::to_vector);
+				box->closeBox();
+			});
+		}, box->lifetime());
+	};
+	strong->show(
+		Box<PeerListBox>(std::move(controller), std::move(initBox)));
+}
+
+[[nodiscard]] std::vector<not_null<PeerData*>> ExtractSuggestRemoving(
+		const Data::ChatFilter &filter) {
+	if (!filter.chatlist()) {
+		return {};
+	}
+	return filter.always() | ranges::views::filter([](
+		not_null<History*> history) {
+		return history->peer->isChannel();
+	}) | ranges::views::transform(&History::peer) | ranges::to_vector;
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_chat_filters.h

@@ -0,0 +1,49 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Window {
+class SessionController;
+} // namespace Window
+
+namespace Data {
+class ChatFilter;
+struct ChatFilterTitle;
+} // namespace Data
+
+namespace Api {
+
+void SaveNewFilterPinned(
+	not_null<Main::Session*> session,
+	FilterId filterId);
+
+void CheckFilterInvite(
+	not_null<Window::SessionController*> controller,
+	const QString &slug);
+
+void ProcessFilterUpdate(
+	base::weak_ptr<Window::SessionController> weak,
+	FilterId filterId,
+	std::vector<not_null<PeerData*>> missing);
+
+void ProcessFilterRemove(
+	base::weak_ptr<Window::SessionController> weak,
+	Data::ChatFilterTitle title,
+	QString iconEmoji,
+	std::vector<not_null<PeerData*>> all,
+	std::vector<not_null<PeerData*>> suggest,
+	Fn<void(std::vector<not_null<PeerData*>>)> done);
+
+[[nodiscard]] std::vector<not_null<PeerData*>> ExtractSuggestRemoving(
+	const Data::ChatFilter &filter);
+
+} // namespace Api

Telegram/SourceFiles/api/api_chat_filters_remove_manager.cpp

@@ -0,0 +1,128 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_chat_filters_remove_manager.h"
+
+#include "api/api_chat_filters.h"
+#include "apiwrap.h"
+#include "data/data_chat_filters.h"
+#include "data/data_peer.h"
+#include "data/data_session.h"
+#include "lang/lang_keys.h"
+#include "main/main_session.h"
+#include "ui/boxes/confirm_box.h"
+#include "ui/ui_utility.h"
+#include "window/window_controller.h"
+#include "window/window_session_controller.h"
+#include "styles/style_layers.h"
+
+namespace Api {
+namespace {
+
+void RemoveChatFilter(
+		not_null<Main::Session*> session,
+		FilterId filterId,
+		std::vector<not_null<PeerData*>> leave) {
+	const auto api = &session->api();
+	session->data().chatsFilters().apply(MTP_updateDialogFilter(
+		MTP_flags(MTPDupdateDialogFilter::Flag(0)),
+		MTP_int(filterId),
+		MTPDialogFilter()));
+	if (leave.empty()) {
+		api->request(MTPmessages_UpdateDialogFilter(
+			MTP_flags(MTPmessages_UpdateDialogFilter::Flag(0)),
+			MTP_int(filterId),
+			MTPDialogFilter()
+		)).send();
+	} else {
+		api->request(MTPchatlists_LeaveChatlist(
+			MTP_inputChatlistDialogFilter(MTP_int(filterId)),
+			MTP_vector<MTPInputPeer>(ranges::views::all(
+				leave
+			) | ranges::views::transform([](not_null<PeerData*> peer) {
+				return MTPInputPeer(peer->input());
+			}) | ranges::to<QVector<MTPInputPeer>>())
+		)).done([=](const MTPUpdates &result) {
+			api->applyUpdates(result);
+		}).send();
+	}
+}
+
+} // namespace
+
+RemoveComplexChatFilter::RemoveComplexChatFilter() = default;
+
+void RemoveComplexChatFilter::request(
+		base::weak_qptr<Ui::RpWidget> widget,
+		base::weak_ptr<Window::SessionController> weak,
+		FilterId id) {
+	const auto session = &weak->session();
+	const auto &list = session->data().chatsFilters().list();
+	const auto i = ranges::find(list, id, &Data::ChatFilter::id);
+	const auto filter = (i != end(list)) ? *i : Data::ChatFilter();
+	const auto has = filter.hasMyLinks();
+	const auto confirm = [=](Fn<void()> action, bool onlyWhenHas = false) {
+		if (!has && onlyWhenHas) {
+			action();
+			return;
+		}
+		weak->window().show(Ui::MakeConfirmBox({
+			.text = (has
+				? tr::lng_filters_delete_sure()
+				: tr::lng_filters_remove_sure()),
+			.confirmed = [=](Fn<void()> &&close) { close(); action(); },
+			.confirmText = (has
+				? tr::lng_box_delete()
+				: tr::lng_filters_remove_yes()),
+			.confirmStyle = &st::attentionBoxButton,
+		}));
+	};
+	const auto simple = [=] {
+		confirm([=] { RemoveChatFilter(session, id, {}); });
+	};
+	const auto suggestRemoving = Api::ExtractSuggestRemoving(filter);
+	if (suggestRemoving.empty()) {
+		simple();
+		return;
+	} else if (_removingRequestId) {
+		if (_removingId == id) {
+			return;
+		}
+		session->api().request(_removingRequestId).cancel();
+	}
+	_removingId = id;
+	_removingRequestId = session->api().request(
+		MTPchatlists_GetLeaveChatlistSuggestions(
+			MTP_inputChatlistDialogFilter(
+				MTP_int(id)))
+	).done(crl::guard(widget, [=, this](const MTPVector<MTPPeer> &result) {
+		_removingRequestId = 0;
+		const auto suggestRemovePeers = ranges::views::all(
+			result.v
+		) | ranges::views::transform([=](const MTPPeer &peer) {
+			return session->data().peer(peerFromMTP(peer));
+		}) | ranges::to_vector;
+		const auto chosen = crl::guard(widget, [=](
+				std::vector<not_null<PeerData*>> peers) {
+			RemoveChatFilter(session, id, std::move(peers));
+		});
+		confirm(crl::guard(widget, [=] {
+			Api::ProcessFilterRemove(
+				weak,
+				filter.title(),
+				filter.iconEmoji(),
+				suggestRemoving,
+				suggestRemovePeers,
+				chosen);
+		}), true);
+	})).fail(crl::guard(widget, [=, this] {
+		_removingRequestId = 0;
+		simple();
+	})).send();
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_chat_filters_remove_manager.h

@@ -0,0 +1,35 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+namespace Window {
+class SessionController;
+} // namespace Window
+
+namespace Ui {
+class RpWidget;
+} // namespace Ui
+
+namespace Api {
+
+class RemoveComplexChatFilter final {
+public:
+	RemoveComplexChatFilter();
+
+	void request(
+		base::weak_qptr<Ui::RpWidget> widget,
+		base::weak_ptr<Window::SessionController> weak,
+		FilterId id);
+
+private:
+	FilterId _removingId = 0;
+	mtpRequestId _removingRequestId = 0;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_chat_invite.cpp

@@ -0,0 +1,704 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_chat_invite.h"
+
+#include "apiwrap.h"
+#include "api/api_credits.h"
+#include "boxes/premium_limits_box.h"
+#include "core/application.h"
+#include "data/components/credits.h"
+#include "data/data_channel.h"
+#include "data/data_file_origin.h"
+#include "data/data_forum.h"
+#include "data/data_photo.h"
+#include "data/data_photo_media.h"
+#include "data/data_session.h"
+#include "data/data_user.h"
+#include "info/channel_statistics/boosts/giveaway/boost_badge.h"
+#include "info/profile/info_profile_badge.h"
+#include "lang/lang_keys.h"
+#include "main/main_session.h"
+#include "settings/settings_credits_graphics.h"
+#include "ui/boxes/confirm_box.h"
+#include "ui/controls/userpic_button.h"
+#include "ui/effects/credits_graphics.h"
+#include "ui/effects/premium_graphics.h"
+#include "ui/effects/premium_stars_colored.h"
+#include "ui/empty_userpic.h"
+#include "ui/layers/generic_box.h"
+#include "ui/painter.h"
+#include "ui/rect.h"
+#include "ui/text/text_utilities.h"
+#include "ui/toast/toast.h"
+#include "ui/vertical_list.h"
+#include "window/window_session_controller.h"
+#include "styles/style_boxes.h"
+#include "styles/style_chat_helpers.h"
+#include "styles/style_credits.h"
+#include "styles/style_info.h"
+#include "styles/style_layers.h"
+#include "styles/style_premium.h"
+
+namespace Api {
+
+namespace {
+
+void SubmitChatInvite(
+		base::weak_ptr<Window::SessionController> weak,
+		not_null<Main::Session*> session,
+		const QString &hash,
+		bool isGroup) {
+	session->api().request(MTPmessages_ImportChatInvite(
+		MTP_string(hash)
+	)).done([=](const MTPUpdates &result) {
+		session->api().applyUpdates(result);
+		const auto strongController = weak.get();
+		if (!strongController) {
+			return;
+		}
+
+		strongController->hideLayer();
+		const auto handleChats = [&](const MTPVector<MTPChat> &chats) {
+			if (chats.v.isEmpty()) {
+				return;
+			}
+			const auto peerId = chats.v[0].match([](const MTPDchat &data) {
+				return peerFromChat(data.vid().v);
+			}, [](const MTPDchannel &data) {
+				return peerFromChannel(data.vid().v);
+			}, [](auto&&) {
+				return PeerId(0);
+			});
+			if (const auto peer = session->data().peerLoaded(peerId)) {
+				// Shows in the primary window anyway.
+				strongController->showPeerHistory(
+					peer,
+					Window::SectionShow::Way::Forward);
+			}
+		};
+		result.match([&](const MTPDupdates &data) {
+			handleChats(data.vchats());
+		}, [&](const MTPDupdatesCombined &data) {
+			handleChats(data.vchats());
+		}, [&](auto &&) {
+			LOG(("API Error: unexpected update cons %1 "
+				"(ApiWrap::importChatInvite)").arg(result.type()));
+		});
+	}).fail([=](const MTP::Error &error) {
+		const auto &type = error.type();
+
+		const auto strongController = weak.get();
+		if (!strongController) {
+			return;
+		} else if (type == u"CHANNELS_TOO_MUCH"_q) {
+			strongController->show(
+				Box(ChannelsLimitBox, &strongController->session()));
+			return;
+		}
+
+		strongController->hideLayer();
+		strongController->showToast([&] {
+			if (type == u"INVITE_REQUEST_SENT"_q) {
+				return isGroup
+					? tr::lng_group_request_sent(tr::now)
+					: tr::lng_group_request_sent_channel(tr::now);
+			} else if (type == u"USERS_TOO_MUCH"_q) {
+				return tr::lng_group_invite_no_room(tr::now);
+			} else {
+				return tr::lng_group_invite_bad_link(tr::now);
+			}
+		}(), ApiWrap::kJoinErrorDuration);
+	}).send();
+}
+
+void ConfirmSubscriptionBox(
+		not_null<Ui::GenericBox*> box,
+		not_null<Main::Session*> session,
+		const QString &hash,
+		const MTPDchatInvite *data) {
+	box->setWidth(st::boxWideWidth);
+	const auto amount = data->vsubscription_pricing()->data().vamount().v;
+	const auto formId = data->vsubscription_form_id()->v;
+	const auto name = qs(data->vtitle());
+	const auto maybePhoto = session->data().processPhoto(data->vphoto());
+	const auto photo = maybePhoto->isNull() ? nullptr : maybePhoto.get();
+
+	struct State final {
+		std::shared_ptr<Data::PhotoMedia> photoMedia;
+		std::unique_ptr<Ui::EmptyUserpic> photoEmpty;
+		QImage frame;
+
+		std::optional<MTP::Sender> api;
+		Ui::RpWidget* saveButton = nullptr;
+		rpl::variable<bool> loading;
+	};
+	const auto state = box->lifetime().make_state<State>();
+
+	const auto content = box->verticalLayout();
+
+	Ui::AddSkip(content, st::confirmInvitePhotoTop);
+	const auto userpic = content->add(
+		object_ptr<Ui::RpWidget>(content),
+		style::al_top);
+	const auto photoSize = st::confirmInvitePhotoSize;
+	userpic->resize(Size(photoSize));
+	userpic->setNaturalWidth(photoSize);
+	const auto creditsIconSize = photoSize / 3;
+	const auto creditsIconCallback =
+		Ui::PaintOutlinedColoredCreditsIconCallback(
+			creditsIconSize,
+			1.5);
+	state->frame = QImage(
+		Size(photoSize * style::DevicePixelRatio()),
+		QImage::Format_ARGB32_Premultiplied);
+	state->frame.setDevicePixelRatio(style::DevicePixelRatio());
+	const auto options = Images::Option::RoundCircle;
+	userpic->paintRequest(
+	) | rpl::on_next([=, small = Data::PhotoSize::Small] {
+		state->frame.fill(Qt::transparent);
+		{
+			auto p = QPainter(&state->frame);
+			if (state->photoMedia) {
+				if (const auto image = state->photoMedia->image(small)) {
+					p.drawPixmap(
+						0,
+						0,
+						image->pix(Size(photoSize), { .options = options }));
+				}
+			} else if (state->photoEmpty) {
+				state->photoEmpty->paintCircle(
+					p,
+					0,
+					0,
+					userpic->width(),
+					photoSize);
+			}
+			if (creditsIconCallback) {
+				p.translate(
+					photoSize - creditsIconSize,
+					photoSize - creditsIconSize);
+				creditsIconCallback(p);
+			}
+		}
+		auto p = QPainter(userpic);
+		p.drawImage(0, 0, state->frame);
+	}, userpic->lifetime());
+	userpic->setAttribute(Qt::WA_TransparentForMouseEvents);
+	if (photo) {
+		state->photoMedia = photo->createMediaView();
+		state->photoMedia->wanted(Data::PhotoSize::Small, Data::FileOrigin());
+		if (!state->photoMedia->image(Data::PhotoSize::Small)) {
+			session->downloaderTaskFinished(
+			) | rpl::on_next([=] {
+				userpic->update();
+			}, userpic->lifetime());
+		}
+	} else {
+		state->photoEmpty = std::make_unique<Ui::EmptyUserpic>(
+			Ui::EmptyUserpic::UserpicColor(0),
+			name);
+	}
+	Ui::AddSkip(content);
+	Ui::AddSkip(content);
+
+	Settings::AddMiniStars(
+		content,
+		Ui::CreateChild<Ui::RpWidget>(content),
+		photoSize,
+		box->width(),
+		2.);
+
+	box->addRow(
+		object_ptr<Ui::FlatLabel>(
+			box,
+			tr::lng_channel_invite_subscription_title(),
+			st::inviteLinkSubscribeBoxTitle),
+		style::al_top);
+	box->addRow(
+		object_ptr<Ui::FlatLabel>(
+			box,
+			tr::lng_channel_invite_subscription_about(
+				lt_channel,
+				rpl::single(tr::bold(name)),
+				lt_price,
+				tr::lng_credits_summary_options_credits(
+					lt_count,
+					rpl::single(amount) | tr::to_count(),
+					tr::bold),
+				tr::marked),
+			st::inviteLinkSubscribeBoxAbout),
+		style::al_top);
+	Ui::AddSkip(content);
+	box->addRow(
+		object_ptr<Ui::FlatLabel>(
+			box,
+			tr::lng_channel_invite_subscription_terms(
+				lt_link,
+				rpl::combine(
+					tr::lng_paid_react_agree_link(),
+					tr::lng_group_invite_subscription_about_url()
+				) | rpl::map([](const QString &text, const QString &url) {
+					return tr::link(text, url);
+				}),
+				tr::rich),
+			st::inviteLinkSubscribeBoxTerms),
+		style::al_top);
+
+	{
+		const auto balance = Settings::AddBalanceWidget(
+			content,
+			session,
+			session->credits().balanceValue(),
+			true);
+		session->credits().load(true);
+
+		rpl::combine(
+			balance->sizeValue(),
+			content->sizeValue()
+		) | rpl::on_next([=](const QSize &, const QSize &) {
+			balance->moveToRight(
+				st::creditsHistoryRightSkip * 2,
+				st::creditsHistoryRightSkip);
+			balance->update();
+		}, balance->lifetime());
+	}
+
+	const auto sendCredits = [=, weak = base::make_weak(box)] {
+		const auto show = box->uiShow();
+		const auto buttonWidth = state->saveButton
+			? state->saveButton->width()
+			: 0;
+		const auto finish = [=] {
+			state->api = std::nullopt;
+			state->loading.force_assign(false);
+			if (const auto strong = weak.get()) {
+				strong->closeBox();
+			}
+		};
+		state->api->request(
+			MTPpayments_SendStarsForm(
+				MTP_long(formId),
+				MTP_inputInvoiceChatInviteSubscription(MTP_string(hash)))
+		).done([=](const MTPpayments_PaymentResult &result) {
+			result.match([&](const MTPDpayments_paymentResult &data) {
+				session->api().applyUpdates(data.vupdates());
+			}, [](const MTPDpayments_paymentVerificationNeeded &data) {
+			});
+			const auto refill = session->data().activeCreditsSubsRebuilder();
+			const auto strong = weak.get();
+			if (!strong) {
+				return;
+			}
+			if (!refill) {
+				return finish();
+			}
+			const auto api
+				= strong->lifetime().make_state<Api::CreditsHistory>(
+					session->user(),
+					true,
+					true);
+			api->requestSubscriptions({}, [=](Data::CreditsStatusSlice d) {
+				refill->fire(std::move(d));
+				finish();
+			});
+		}).fail([=](const MTP::Error &error) {
+			const auto id = error.type();
+			if (weak) {
+				state->api = std::nullopt;
+			}
+			show->showToast(id);
+			state->loading.force_assign(false);
+		}).send();
+		if (state->saveButton) {
+			state->saveButton->resizeToWidth(buttonWidth);
+		}
+	};
+
+	auto confirmText = tr::lng_channel_invite_subscription_button();
+	state->saveButton = box->addButton(std::move(confirmText), [=] {
+		if (state->api) {
+			return;
+		}
+		state->api.emplace(&session->mtp());
+		state->loading.force_assign(true);
+
+		const auto done = [=](Settings::SmallBalanceResult result) {
+			if (result == Settings::SmallBalanceResult::Success
+				|| result == Settings::SmallBalanceResult::Already) {
+				sendCredits();
+			} else {
+				state->api = std::nullopt;
+				state->loading.force_assign(false);
+			}
+		};
+		Settings::MaybeRequestBalanceIncrease(
+			Main::MakeSessionShow(box->uiShow(), session),
+			amount,
+			Settings::SmallBalanceSubscription{ .name = name },
+			done);
+	});
+
+	if (const auto saveButton = state->saveButton) {
+		using namespace Info::Statistics;
+		const auto loadingAnimation = InfiniteRadialAnimationWidget(
+			saveButton,
+			saveButton->height() / 2,
+			&st::editStickerSetNameLoading);
+		AddChildToWidgetCenter(saveButton, loadingAnimation);
+		loadingAnimation->showOn(
+			state->loading.value() | rpl::map(rpl::mappers::_1));
+	}
+	box->addButton(tr::lng_cancel(), [=] { box->closeBox(); });
+}
+
+} // namespace
+
+void CheckChatInvite(
+		not_null<Window::SessionController*> controller,
+		const QString &hash,
+		ChannelData *invitePeekChannel,
+		Fn<void()> loaded) {
+	const auto session = &controller->session();
+	const auto weak = base::make_weak(controller);
+	session->api().checkChatInvite(hash, [=](const MTPChatInvite &result) {
+		const auto strong = weak.get();
+		if (!strong) {
+			return;
+		}
+		if (loaded) {
+			loaded();
+		}
+		Core::App().hideMediaView();
+		const auto show = [&](not_null<PeerData*> chat) {
+			const auto way = Window::SectionShow::Way::Forward;
+			if (const auto forum = chat->forum()) {
+				strong->showForum(forum, way);
+			} else {
+				strong->showPeerHistory(chat, way);
+			}
+		};
+		result.match([=](const MTPDchatInvite &data) {
+			const auto isGroup = !data.is_broadcast();
+			const auto hasPricing = !!data.vsubscription_pricing();
+			const auto canRefulfill = data.is_can_refulfill_subscription();
+			if (hasPricing
+				&& !canRefulfill
+				&& !data.vsubscription_form_id()) {
+				strong->uiShow()->showToast(
+					tr::lng_confirm_phone_link_invalid(tr::now));
+				return;
+			}
+			const auto box = (hasPricing && !canRefulfill)
+				? strong->show(Box(
+					ConfirmSubscriptionBox,
+					session,
+					hash,
+					&data))
+				: strong->show(Box<ConfirmInviteBox>(
+					session,
+					data,
+					invitePeekChannel,
+					[=] { SubmitChatInvite(weak, session, hash, isGroup); }));
+			if (invitePeekChannel) {
+				box->boxClosing(
+				) | rpl::filter([=] {
+					return !invitePeekChannel->amIn();
+				}) | rpl::on_next([=] {
+					if (const auto strong = weak.get()) {
+						strong->clearSectionStack(Window::SectionShow(
+							Window::SectionShow::Way::ClearStack,
+							anim::type::normal,
+							anim::activation::background));
+					}
+				}, box->lifetime());
+			}
+		}, [=](const MTPDchatInviteAlready &data) {
+			if (const auto chat = session->data().processChat(data.vchat())) {
+				if (const auto channel = chat->asChannel()) {
+					channel->clearInvitePeek();
+				}
+				show(chat);
+			}
+		}, [=](const MTPDchatInvitePeek &data) {
+			if (const auto chat = session->data().processChat(data.vchat())) {
+				if (const auto channel = chat->asChannel()) {
+					channel->setInvitePeek(hash, data.vexpires().v);
+					show(chat);
+				}
+			}
+		});
+	}, [=](const MTP::Error &error) {
+		if (MTP::IsFloodError(error)) {
+			if (const auto strong = weak.get()) {
+				strong->show(Ui::MakeInformBox(tr::lng_flood_error()));
+			}
+			return;
+		}
+		if (error.code() != 400) {
+			return;
+		}
+		Core::App().hideMediaView();
+		if (const auto strong = weak.get()) {
+			strong->show(Ui::MakeInformBox(tr::lng_group_invite_bad_link()));
+		}
+	});
+}
+
+} // namespace Api
+
+struct ConfirmInviteBox::Participant {
+	not_null<UserData*> user;
+	Ui::PeerUserpicView userpic;
+};
+
+ConfirmInviteBox::ConfirmInviteBox(
+	QWidget*,
+	not_null<Main::Session*> session,
+	const MTPDchatInvite &data,
+	ChannelData *invitePeekChannel,
+	Fn<void()> submit)
+: ConfirmInviteBox(
+	session,
+	Parse(session, data),
+	invitePeekChannel,
+	std::move(submit)) {
+}
+
+ConfirmInviteBox::ConfirmInviteBox(
+	not_null<Main::Session*> session,
+	ChatInvite &&invite,
+	ChannelData *invitePeekChannel,
+	Fn<void()> submit)
+: _session(session)
+, _submit(std::move(submit))
+, _title(this, st::confirmInviteTitle)
+, _badge(std::make_unique<Info::Profile::Badge>(
+	this,
+	st::infoPeerBadge,
+	_session,
+	rpl::single(Info::Profile::Badge::Content{ BadgeForInvite(invite) }),
+	nullptr,
+	[=] { return false; }))
+, _status(this, st::confirmInviteStatus)
+, _about(this, st::confirmInviteAbout)
+, _aboutRequests(this, st::confirmInviteStatus)
+, _participants(std::move(invite.participants))
+, _isChannel(invite.isChannel && !invite.isMegagroup)
+, _requestApprove(invite.isRequestNeeded) {
+	const auto count = invite.participantsCount;
+	const auto status = [&] {
+		return invitePeekChannel
+			? tr::lng_channel_invite_private(tr::now)
+			: (!_participants.empty() && _participants.size() < count)
+			? tr::lng_group_invite_members(tr::now, lt_count, count)
+			: (count > 0 && _isChannel)
+			? tr::lng_chat_status_subscribers(
+				tr::now,
+				lt_count_decimal,
+				count)
+			: (count > 0)
+			? tr::lng_chat_status_members(tr::now, lt_count_decimal, count)
+			: _isChannel
+			? tr::lng_channel_status(tr::now)
+			: tr::lng_group_status(tr::now);
+	}();
+	_title->setText(invite.title);
+	_status->setText(status);
+	if (!invite.about.isEmpty()) {
+		_about->setText(invite.about);
+	} else {
+		_about.destroy();
+	}
+	if (_requestApprove) {
+		_aboutRequests->setText(_isChannel
+			? tr::lng_group_request_about_channel(tr::now)
+			: tr::lng_group_request_about(tr::now));
+	} else {
+		_aboutRequests.destroy();
+	}
+
+	if (invite.photo) {
+		_photo = invite.photo->createMediaView();
+		_photo->wanted(Data::PhotoSize::Small, Data::FileOrigin());
+		if (!_photo->image(Data::PhotoSize::Small)) {
+			_session->downloaderTaskFinished(
+			) | rpl::on_next([=] {
+				update();
+			}, lifetime());
+		}
+	} else {
+		_photoEmpty = std::make_unique<Ui::EmptyUserpic>(
+			Ui::EmptyUserpic::UserpicColor(0),
+			invite.title);
+	}
+}
+
+ConfirmInviteBox::~ConfirmInviteBox() = default;
+
+ConfirmInviteBox::ChatInvite ConfirmInviteBox::Parse(
+		not_null<Main::Session*> session,
+		const MTPDchatInvite &data) {
+	auto participants = std::vector<Participant>();
+	if (const auto list = data.vparticipants()) {
+		participants.reserve(list->v.size());
+		for (const auto &participant : list->v) {
+			if (const auto user = session->data().processUser(participant)) {
+				participants.push_back(Participant{ user });
+			}
+		}
+	}
+	const auto photo = session->data().processPhoto(data.vphoto());
+	return {
+		.title = qs(data.vtitle()),
+		.about = data.vabout().value_or_empty(),
+		.photo = (photo->isNull() ? nullptr : photo.get()),
+		.participantsCount = data.vparticipants_count().v,
+		.participants = std::move(participants),
+		.isPublic = data.is_public(),
+		.isChannel = data.is_channel(),
+		.isMegagroup = data.is_megagroup(),
+		.isBroadcast = data.is_broadcast(),
+		.isRequestNeeded = data.is_request_needed(),
+		.isFake = data.is_fake(),
+		.isScam = data.is_scam(),
+		.isVerified = data.is_verified(),
+	};
+}
+
+[[nodiscard]] Info::Profile::BadgeType ConfirmInviteBox::BadgeForInvite(
+		const ChatInvite &invite) {
+	using Type = Info::Profile::BadgeType;
+	return invite.isVerified
+		? Type::Verified
+		: invite.isScam
+		? Type::Scam
+		: invite.isFake
+		? Type::Fake
+		: Type::None;
+}
+
+void ConfirmInviteBox::prepare() {
+	addButton(
+		(_requestApprove
+			? tr::lng_group_request_to_join()
+			: _isChannel
+			? tr::lng_profile_join_channel()
+			: tr::lng_profile_join_group()),
+		_submit);
+	addButton(tr::lng_cancel(), [=] { closeBox(); });
+
+	while (_participants.size() > 4) {
+		_participants.pop_back();
+	}
+
+	auto newHeight = st::confirmInviteStatusTop + _status->height() + st::boxPadding.bottom();
+	if (!_participants.empty()) {
+		int skip = (st::confirmInviteUsersWidth - 4 * st::confirmInviteUserPhotoSize) / 5;
+		int padding = skip / 2;
+		_userWidth = (st::confirmInviteUserPhotoSize + 2 * padding);
+		int sumWidth = _participants.size() * _userWidth;
+		int left = (st::boxWideWidth - sumWidth) / 2;
+		for (const auto &participant : _participants) {
+			auto name = new Ui::FlatLabel(this, st::confirmInviteUserName);
+			name->resizeToWidth(st::confirmInviteUserPhotoSize + padding);
+			name->setText(participant.user->firstName.isEmpty()
+				? participant.user->name()
+				: participant.user->firstName);
+			name->moveToLeft(left + (padding / 2), st::confirmInviteUserNameTop);
+			left += _userWidth;
+		}
+
+		newHeight += st::confirmInviteUserHeight;
+	}
+	if (_about) {
+		const auto padding = st::confirmInviteAboutPadding;
+		_about->resizeToWidth(st::boxWideWidth - padding.left() - padding.right());
+		newHeight += padding.top() + _about->height() + padding.bottom();
+	}
+	if (_aboutRequests) {
+		const auto padding = st::confirmInviteAboutRequestsPadding;
+		_aboutRequests->resizeToWidth(st::boxWideWidth - padding.left() - padding.right());
+		newHeight += padding.top() + _aboutRequests->height() + padding.bottom();
+	}
+	setDimensions(st::boxWideWidth, newHeight);
+}
+
+void ConfirmInviteBox::resizeEvent(QResizeEvent *e) {
+	BoxContent::resizeEvent(e);
+
+	const auto padding = st::boxRowPadding;
+	auto nameWidth = width() - padding.left() - padding.right();
+	auto badgeWidth = 0;
+	if (const auto widget = _badge->widget()) {
+		badgeWidth = st::infoVerifiedCheckPosition.x() + widget->width();
+		nameWidth -= badgeWidth;
+	}
+	_title->resizeToWidth(std::min(nameWidth, _title->textMaxWidth()));
+	_title->moveToLeft(
+		(width() - _title->width() - badgeWidth) / 2,
+		st::confirmInviteTitleTop);
+	const auto badgeLeft = _title->x() + _title->width();
+	const auto badgeTop = _title->y();
+	const auto badgeBottom = _title->y() + _title->height();
+	_badge->move(badgeLeft, badgeTop, badgeBottom);
+
+	_status->move(
+		(width() - _status->width()) / 2,
+		st::confirmInviteStatusTop);
+	auto bottom = _status->y()
+		+ _status->height()
+		+ st::boxPadding.bottom()
+		+ (_participants.empty() ? 0 : st::confirmInviteUserHeight);
+	if (_about) {
+		const auto padding = st::confirmInviteAboutPadding;
+		_about->move((width() - _about->width()) / 2, bottom + padding.top());
+		bottom += padding.top() + _about->height() + padding.bottom();
+	}
+	if (_aboutRequests) {
+		const auto padding = st::confirmInviteAboutRequestsPadding;
+		_aboutRequests->move((width() - _aboutRequests->width()) / 2, bottom + padding.top());
+	}
+}
+
+void ConfirmInviteBox::paintEvent(QPaintEvent *e) {
+	BoxContent::paintEvent(e);
+
+	Painter p(this);
+
+	if (_photo) {
+		if (const auto image = _photo->image(Data::PhotoSize::Small)) {
+			const auto size = st::confirmInvitePhotoSize;
+			p.drawPixmap(
+				(width() - size) / 2,
+				st::confirmInvitePhotoTop,
+				image->pix(
+					{ size, size },
+					{ .options = Images::Option::RoundCircle }));
+		}
+	} else if (_photoEmpty) {
+		_photoEmpty->paintCircle(
+			p,
+			(width() - st::confirmInvitePhotoSize) / 2,
+			st::confirmInvitePhotoTop,
+			width(),
+			st::confirmInvitePhotoSize);
+	}
+
+	int sumWidth = _participants.size() * _userWidth;
+	int left = (width() - sumWidth) / 2;
+	for (auto &participant : _participants) {
+		participant.user->paintUserpicLeft(
+			p,
+			participant.userpic,
+			left + (_userWidth - st::confirmInviteUserPhotoSize) / 2,
+			st::confirmInviteUserPhotoTop,
+			width(),
+			st::confirmInviteUserPhotoSize);
+		left += _userWidth;
+	}
+}

Telegram/SourceFiles/api/api_chat_invite.h

@@ -0,0 +1,108 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "ui/layers/box_content.h"
+
+class UserData;
+class ChannelData;
+
+namespace Info::Profile {
+class Badge;
+enum class BadgeType : uchar;
+} // namespace Info::Profile
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Window {
+class SessionController;
+} // namespace Window
+
+namespace Data {
+class PhotoMedia;
+} // namespace Data
+
+namespace Ui {
+class EmptyUserpic;
+} // namespace Ui
+
+namespace Api {
+
+void CheckChatInvite(
+	not_null<Window::SessionController*> controller,
+	const QString &hash,
+	ChannelData *invitePeekChannel = nullptr,
+	Fn<void()> loaded = nullptr);
+
+} // namespace Api
+
+class ConfirmInviteBox final : public Ui::BoxContent {
+public:
+	ConfirmInviteBox(
+		QWidget*,
+		not_null<Main::Session*> session,
+		const MTPDchatInvite &data,
+		ChannelData *invitePeekChannel,
+		Fn<void()> submit);
+	~ConfirmInviteBox();
+
+protected:
+	void prepare() override;
+
+	void resizeEvent(QResizeEvent *e) override;
+	void paintEvent(QPaintEvent *e) override;
+
+private:
+	struct Participant;
+	struct ChatInvite {
+		QString title;
+		QString about;
+		PhotoData *photo = nullptr;
+		int participantsCount = 0;
+		std::vector<Participant> participants;
+		bool isPublic = false;
+		bool isChannel = false;
+		bool isMegagroup = false;
+		bool isBroadcast = false;
+		bool isRequestNeeded = false;
+		bool isFake = false;
+		bool isScam = false;
+		bool isVerified = false;
+	};
+	[[nodiscard]] static ChatInvite Parse(
+		not_null<Main::Session*> session,
+		const MTPDchatInvite &data);
+	[[nodiscard]] Info::Profile::BadgeType BadgeForInvite(
+		const ChatInvite &invite);
+
+	ConfirmInviteBox(
+		not_null<Main::Session*> session,
+		ChatInvite &&invite,
+		ChannelData *invitePeekChannel,
+		Fn<void()> submit);
+
+	const not_null<Main::Session*> _session;
+
+	Fn<void()> _submit;
+	object_ptr<Ui::FlatLabel> _title;
+	std::unique_ptr<Info::Profile::Badge> _badge;
+	object_ptr<Ui::FlatLabel> _status;
+	object_ptr<Ui::FlatLabel> _about;
+	object_ptr<Ui::FlatLabel> _aboutRequests;
+	std::shared_ptr<Data::PhotoMedia> _photo;
+	std::unique_ptr<Ui::EmptyUserpic> _photoEmpty;
+	std::vector<Participant> _participants;
+
+	bool _isChannel = false;
+	bool _requestApprove = false;
+
+	int _userWidth = 0;
+
+};

Telegram/SourceFiles/api/api_chat_links.cpp

@@ -0,0 +1,170 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_chat_links.h"
+
+#include "api/api_text_entities.h"
+#include "apiwrap.h"
+#include "data/data_session.h"
+#include "main/main_session.h"
+
+namespace Api {
+namespace {
+
+[[nodiscard]] ChatLink FromMTP(
+		not_null<Main::Session*> session,
+		const MTPBusinessChatLink &link) {
+	const auto &data = link.data();
+	return {
+		.link = qs(data.vlink()),
+		.title = qs(data.vtitle().value_or_empty()),
+		.message = {
+			qs(data.vmessage()),
+			EntitiesFromMTP(
+				session,
+				data.ventities().value_or_empty())
+		},
+		.clicks = data.vviews().v,
+	};
+}
+
+[[nodiscard]] MTPInputBusinessChatLink ToMTP(
+		not_null<Main::Session*> session,
+		const QString &title,
+		const TextWithEntities &message) {
+	auto entities = EntitiesToMTP(
+		session,
+		message.entities,
+		ConvertOption::SkipLocal);
+	using Flag = MTPDinputBusinessChatLink::Flag;
+	const auto flags = (title.isEmpty() ? Flag() : Flag::f_title)
+		| (entities.v.isEmpty() ? Flag() : Flag::f_entities);
+	return MTP_inputBusinessChatLink(
+		MTP_flags(flags),
+		MTP_string(message.text),
+		std::move(entities),
+		MTP_string(title));
+}
+
+} // namespace
+
+ChatLinks::ChatLinks(not_null<ApiWrap*> api) : _api(api) {
+}
+
+void ChatLinks::create(
+		const QString &title,
+		const TextWithEntities &message,
+		Fn<void(Link)> done) {
+	const auto session = &_api->session();
+	_api->request(MTPaccount_CreateBusinessChatLink(
+		ToMTP(session, title, message)
+	)).done([=](const MTPBusinessChatLink &result) {
+		const auto link = FromMTP(session, result);
+		_list.push_back(link);
+		_updates.fire({ .was = QString(), .now = link });
+		if (done) done(link);
+	}).fail([=](const MTP::Error &error) {
+		const auto type = error.type();
+		if (done) done(Link());
+	}).send();
+}
+
+void ChatLinks::edit(
+		const QString &link,
+		const QString &title,
+		const TextWithEntities &message,
+		Fn<void(Link)> done) {
+	const auto session = &_api->session();
+	_api->request(MTPaccount_EditBusinessChatLink(
+		MTP_string(link),
+		ToMTP(session, title, message)
+	)).done([=](const MTPBusinessChatLink &result) {
+		const auto parsed = FromMTP(session, result);
+		if (parsed.link != link) {
+			LOG(("API Error: EditBusinessChatLink changed the link."));
+			if (done) done(Link());
+			return;
+		}
+		const auto i = ranges::find(_list, link, &Link::link);
+		if (i != end(_list)) {
+			*i = parsed;
+			_updates.fire({ .was = link, .now = parsed });
+			if (done) done(parsed);
+		} else {
+			LOG(("API Error: EditBusinessChatLink link not found."));
+			if (done) done(Link());
+		}
+	}).fail([=](const MTP::Error &error) {
+		const auto type = error.type();
+		if (done) done(Link());
+	}).send();
+}
+
+void ChatLinks::destroy(
+		const QString &link,
+		Fn<void()> done) {
+	_api->request(MTPaccount_DeleteBusinessChatLink(
+		MTP_string(link)
+	)).done([=] {
+		const auto i = ranges::find(_list, link, &Link::link);
+		if (i != end(_list)) {
+			_list.erase(i);
+			_updates.fire({ .was = link });
+			if (done) done();
+		} else {
+			LOG(("API Error: DeleteBusinessChatLink link not found."));
+			if (done) done();
+		}
+	}).fail([=](const MTP::Error &error) {
+		const auto type = error.type();
+		if (done) done();
+	}).send();
+}
+
+void ChatLinks::preload() {
+	if (_loaded || _requestId) {
+		return;
+	}
+	_requestId = _api->request(MTPaccount_GetBusinessChatLinks(
+	)).done([=](const MTPaccount_BusinessChatLinks &result) {
+		const auto &data = result.data();
+		const auto session = &_api->session();
+		const auto owner = &session->data();
+		owner->processUsers(data.vusers());
+		owner->processChats(data.vchats());
+		auto links = std::vector<Link>();
+		links.reserve(data.vlinks().v.size());
+		for (const auto &link : data.vlinks().v) {
+			links.push_back(FromMTP(session, link));
+		}
+		_list = std::move(links);
+		_loaded = true;
+		_loadedUpdates.fire({});
+	}).fail([=] {
+		_requestId = 0;
+		_loaded = true;
+		_loadedUpdates.fire({});
+	}).send();
+}
+
+const std::vector<ChatLink> &ChatLinks::list() const {
+	return _list;
+}
+
+bool ChatLinks::loaded() const {
+	return _loaded;
+}
+
+rpl::producer<> ChatLinks::loadedUpdates() const {
+	return _loadedUpdates.events();
+}
+
+rpl::producer<ChatLinks::Update> ChatLinks::updates() const {
+	return _updates.events();
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_chat_links.h

@@ -0,0 +1,64 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+class ApiWrap;
+
+namespace Api {
+
+struct ChatLink {
+	QString link;
+	QString title;
+	TextWithEntities message;
+	int clicks = 0;
+};
+
+struct ChatLinkUpdate {
+	QString was;
+	std::optional<ChatLink> now;
+};
+
+class ChatLinks final {
+public:
+	explicit ChatLinks(not_null<ApiWrap*> api);
+
+	using Link = ChatLink;
+	using Update = ChatLinkUpdate;
+
+	void create(
+		const QString &title,
+		const TextWithEntities &message,
+		Fn<void(Link)> done = nullptr);
+	void edit(
+		const QString &link,
+		const QString &title,
+		const TextWithEntities &message,
+		Fn<void(Link)> done = nullptr);
+	void destroy(
+		const QString &link,
+		Fn<void()> done = nullptr);
+
+	void preload();
+	[[nodiscard]] const std::vector<ChatLink> &list() const;
+	[[nodiscard]] bool loaded() const;
+	[[nodiscard]] rpl::producer<> loadedUpdates() const;
+	[[nodiscard]] rpl::producer<Update> updates() const;
+
+private:
+	const not_null<ApiWrap*> _api;
+
+	std::vector<Link> _list;
+	rpl::event_stream<> _loadedUpdates;
+	mtpRequestId _requestId = 0;
+	bool _loaded = false;
+
+	rpl::event_stream<Update> _updates;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_chat_participants.cpp

@@ -0,0 +1,891 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_chat_participants.h"
+
+#include "apiwrap.h"
+#include "boxes/add_contact_box.h" // ShowAddParticipantsError
+#include "boxes/peers/add_participants_box.h" // ChatInviteForbidden
+#include "data/data_changes.h"
+#include "data/data_channel.h"
+#include "data/data_channel_admins.h"
+#include "data/data_chat.h"
+#include "data/data_histories.h"
+#include "data/data_session.h"
+#include "data/data_user.h"
+#include "history/history.h"
+#include "main/main_session.h"
+#include "mtproto/mtproto_config.h"
+
+namespace Api {
+namespace {
+
+using Members = ChatParticipants::Members;
+
+constexpr auto kSmallDelayMs = crl::time(5);
+
+// 1 second wait before reload members in channel after adding.
+constexpr auto kReloadChannelMembersTimeout = 1000;
+
+// Max users in one super group invite request.
+constexpr auto kMaxUsersPerInvite = 100;
+
+// How many messages from chat history server should forward to user,
+// that was added to this chat.
+constexpr auto kForwardMessagesOnAdd = 100;
+
+std::vector<ChatParticipant> ParseList(
+		const ChatParticipants::TLMembers &data,
+		not_null<PeerData*> peer) {
+	return ranges::views::all(
+		data.vparticipants().v
+	) | ranges::views::transform([&](const MTPChannelParticipant &p) {
+		return ChatParticipant(p, peer);
+	}) | ranges::to_vector;
+}
+
+void ApplyMegagroupAdmins(not_null<ChannelData*> channel, Members list) {
+	Expects(channel->isMegagroup());
+
+	const auto i = ranges::find_if(list, &Api::ChatParticipant::isCreator);
+	if (i != list.end()) {
+		i->tryApplyCreatorTo(channel);
+	} else {
+		channel->mgInfo->creator = nullptr;
+		channel->mgInfo->creatorRank = QString();
+	}
+
+	auto adding = base::flat_map<UserId, QString>();
+	for (const auto &p : list) {
+		if (p.isUser()) {
+			adding.emplace(p.userId(), p.rank());
+		}
+	}
+	if (channel->mgInfo->creator) {
+		adding.emplace(
+			peerToUser(channel->mgInfo->creator->id),
+			channel->mgInfo->creatorRank);
+	}
+	auto removing = channel->mgInfo->admins;
+	if (removing.empty() && adding.empty()) {
+		// Add some admin-placeholder so we don't DDOS
+		// server with admins list requests.
+		LOG(("API Error: Got empty admins list from server."));
+		adding.emplace(0, QString());
+	}
+
+	Data::ChannelAdminChanges changes(channel);
+	for (const auto &[addingId, rank] : adding) {
+		if (!removing.remove(addingId)) {
+			changes.add(addingId, rank);
+		}
+	}
+	for (const auto &[removingId, rank] : removing) {
+		changes.remove(removingId);
+	}
+}
+
+void RefreshChannelAdmins(
+		not_null<ChannelData*> channel,
+		Members participants) {
+	Data::ChannelAdminChanges changes(channel);
+	for (const auto &p : participants) {
+		if (p.isUser()) {
+			if (p.isCreatorOrAdmin()) {
+				p.tryApplyCreatorTo(channel);
+				changes.add(p.userId(), p.rank());
+			} else {
+				changes.remove(p.userId());
+			}
+		}
+	}
+}
+
+void ApplyLastList(
+		not_null<ChannelData*> channel,
+		int availableCount,
+		Members list) {
+	channel->mgInfo->lastAdmins.clear();
+	channel->mgInfo->lastRestricted.clear();
+	channel->mgInfo->lastParticipants.clear();
+	channel->mgInfo->lastParticipantsStatus
+		= MegagroupInfo::LastParticipantsUpToDate
+			| MegagroupInfo::LastParticipantsOnceReceived;
+
+	auto botStatus = channel->mgInfo->botStatus;
+	for (const auto &p : list) {
+		const auto participant = channel->owner().peer(p.id());
+		const auto user = participant->asUser();
+		const auto adminRights = p.rights();
+		const auto restrictedRights = p.restrictions();
+		if (p.isCreator()) {
+			Assert(user != nullptr);
+			p.tryApplyCreatorTo(channel);
+			if (!channel->mgInfo->admins.empty()) {
+				Data::ChannelAdminChanges(channel).add(p.userId(), p.rank());
+			}
+		}
+		if (user
+			&& !base::contains(channel->mgInfo->lastParticipants, user)) {
+			channel->mgInfo->lastParticipants.push_back(user);
+			if (adminRights.flags) {
+				channel->mgInfo->lastAdmins.emplace(
+					user,
+					MegagroupInfo::Admin{ adminRights, p.canBeEdited() });
+			} else if (restrictedRights.flags) {
+				channel->mgInfo->lastRestricted.emplace(
+					user,
+					MegagroupInfo::Restricted{ restrictedRights });
+			}
+			if (user->isBot()) {
+				channel->mgInfo->bots.insert(user);
+				if ((channel->mgInfo->botStatus != 0)
+					&& (channel->mgInfo->botStatus < 2)) {
+					channel->mgInfo->botStatus = 2;
+				}
+			}
+		}
+	}
+	//
+	// getParticipants(Recent) sometimes can't return all members,
+	// only some last subset, size of this subset is availableCount.
+	//
+	// So both list size and availableCount have nothing to do with
+	// the full supergroup members count.
+	//
+	//if (list.isEmpty()) {
+	//	channel->setMembersCount(channel->mgInfo->lastParticipants.size());
+	//} else {
+	//	channel->setMembersCount(availableCount);
+	//}
+	channel->session().changes().peerUpdated(
+		channel,
+		(Data::PeerUpdate::Flag::Members | Data::PeerUpdate::Flag::Admins));
+
+	channel->mgInfo->botStatus = botStatus;
+	channel->session().changes().peerUpdated(
+		channel,
+		Data::PeerUpdate::Flag::FullInfo);
+}
+
+void ApplyBotsList(
+		not_null<ChannelData*> channel,
+		int availableCount,
+		Members list) {
+	const auto history = channel->owner().historyLoaded(channel);
+	channel->mgInfo->bots.clear();
+	channel->mgInfo->botStatus = -1;
+
+	auto needBotsInfos = false;
+	auto botStatus = channel->mgInfo->botStatus;
+	auto keyboardBotFound = !history || !history->lastKeyboardFrom;
+	for (const auto &p : list) {
+		const auto participant = channel->owner().peer(p.id());
+		const auto user = participant->asUser();
+		if (user && user->isBot()) {
+			channel->mgInfo->bots.insert(user);
+			botStatus = 2;// (botStatus > 0/* || !i.key()->botInfo->readsAllHistory*/) ? 2 : 1;
+			if (!user->botInfo->inited) {
+				needBotsInfos = true;
+			}
+		}
+		if (!keyboardBotFound
+			&& participant->id == history->lastKeyboardFrom) {
+			keyboardBotFound = true;
+		}
+	}
+	if (needBotsInfos) {
+		channel->session().api().requestFullPeer(channel);
+	}
+	if (!keyboardBotFound) {
+		history->clearLastKeyboard();
+	}
+
+	channel->mgInfo->botStatus = botStatus;
+	channel->session().changes().peerUpdated(
+		channel,
+		Data::PeerUpdate::Flag::FullInfo);
+}
+
+[[nodiscard]] ChatParticipants::Peers ParseSimilarChannels(
+		not_null<Main::Session*> session,
+		const MTPmessages_Chats &chats) {
+	auto result = ChatParticipants::Peers();
+	chats.match([&](const auto &data) {
+		const auto &list = data.vchats().v;
+		result.list.reserve(list.size());
+		for (const auto &chat : list) {
+			const auto peer = session->data().processChat(chat);
+			if (const auto channel = peer->asChannel()) {
+				result.list.push_back(channel);
+			}
+		}
+		if constexpr (MTPDmessages_chatsSlice::Is<decltype(data)>()) {
+			if (session->premiumPossible()) {
+				result.more = data.vcount().v - data.vchats().v.size();
+			}
+		}
+	});
+	return result;
+}
+
+[[nodiscard]] ChatParticipants::Peers ParseSimilarChannels(
+		not_null<ChannelData*> channel,
+		const MTPmessages_Chats &chats) {
+	return ParseSimilarChannels(&channel->session(), chats);
+}
+
+[[nodiscard]] ChatParticipants::Peers ParseSimilarBots(
+		not_null<Main::Session*> session,
+		const MTPusers_Users &users) {
+	auto result = ChatParticipants::Peers();
+	users.match([&](const auto &data) {
+		const auto &list = data.vusers().v;
+		result.list.reserve(list.size());
+		for (const auto &user : list) {
+			result.list.push_back(session->data().processUser(user));
+		}
+		if constexpr (MTPDusers_usersSlice::Is<decltype(data)>()) {
+			if (session->premiumPossible()) {
+				result.more = data.vcount().v - data.vusers().v.size();
+			}
+		}
+	});
+	return result;
+}
+
+} // namespace
+
+ChatParticipant::ChatParticipant(
+		const MTPChannelParticipant &p,
+		not_null<PeerData*> peer) {
+	_peer = p.match([](const MTPDchannelParticipantBanned &data) {
+		return peerFromMTP(data.vpeer());
+	}, [](const MTPDchannelParticipantLeft &data) {
+		return peerFromMTP(data.vpeer());
+	}, [](const auto &data) {
+		return peerFromUser(data.vuser_id());
+	});
+
+	p.match([&](const MTPDchannelParticipantCreator &data) {
+		_canBeEdited = (peer->session().userPeerId() == _peer);
+		_type = Type::Creator;
+		_rights = ChatAdminRightsInfo(data.vadmin_rights());
+		_rank = qs(data.vrank().value_or_empty());
+	}, [&](const MTPDchannelParticipantAdmin &data) {
+		_canBeEdited = data.is_can_edit();
+		_type = Type::Admin;
+		_rank = qs(data.vrank().value_or_empty());
+		_rights = ChatAdminRightsInfo(data.vadmin_rights());
+		_by = peerToUser(peerFromUser(data.vpromoted_by()));
+		_date = data.vdate().v;
+	}, [&](const MTPDchannelParticipantSelf &data) {
+		_type = Type::Member;
+		_date = data.vdate().v;
+		_by = peerToUser(peerFromUser(data.vinviter_id()));
+		if (data.vsubscription_until_date()) {
+			_subscriptionDate = data.vsubscription_until_date()->v;
+		}
+	}, [&](const MTPDchannelParticipant &data) {
+		_type = Type::Member;
+		_date = data.vdate().v;
+		if (data.vsubscription_until_date()) {
+			_subscriptionDate = data.vsubscription_until_date()->v;
+		}
+	}, [&](const MTPDchannelParticipantBanned &data) {
+		_restrictions = ChatRestrictionsInfo(data.vbanned_rights());
+		_by = peerToUser(peerFromUser(data.vkicked_by()));
+		_date = data.vdate().v;
+
+		_type = (_restrictions.flags & ChatRestriction::ViewMessages)
+			? Type::Banned
+			: Type::Restricted;
+	}, [&](const MTPDchannelParticipantLeft &data) {
+		_type = Type::Left;
+	});
+}
+
+ChatParticipant::ChatParticipant(
+	Type type,
+	PeerId peerId,
+	UserId by,
+	ChatRestrictionsInfo restrictions,
+	ChatAdminRightsInfo rights,
+	bool canBeEdited,
+	QString rank)
+: _type(type)
+, _peer(peerId)
+, _by(by)
+, _canBeEdited(canBeEdited)
+, _rank(rank)
+, _restrictions(std::move(restrictions))
+, _rights(std::move(rights)) {
+}
+
+void ChatParticipant::tryApplyCreatorTo(
+		not_null<ChannelData*> channel) const {
+	if (isCreator() && isUser()) {
+		if (const auto info = channel->mgInfo.get()) {
+			info->creator = channel->owner().userLoaded(userId());
+			info->creatorRank = rank();
+		}
+	}
+}
+
+bool ChatParticipant::isUser() const {
+	return peerIsUser(_peer);
+}
+
+bool ChatParticipant::isCreator() const {
+	return _type == Type::Creator;
+}
+
+bool ChatParticipant::isCreatorOrAdmin() const {
+	return _type == Type::Creator || _type == Type::Admin;
+}
+
+bool ChatParticipant::isKicked() const {
+	return _type == Type::Banned;
+}
+
+bool ChatParticipant::canBeEdited() const {
+	return _canBeEdited;
+}
+
+UserId ChatParticipant::by() const {
+	return _by;
+}
+
+PeerId ChatParticipant::id() const {
+	return _peer;
+}
+
+UserId ChatParticipant::userId() const {
+	return peerToUser(_peer);
+}
+
+ChatRestrictionsInfo ChatParticipant::restrictions() const {
+	return _restrictions;
+}
+
+ChatAdminRightsInfo ChatParticipant::rights() const {
+	return _rights;
+}
+
+TimeId ChatParticipant::subscriptionDate() const {
+	return _subscriptionDate;
+}
+
+TimeId ChatParticipant::promotedSince() const {
+	return (_type == Type::Admin) ? _date : TimeId(0);
+}
+
+TimeId ChatParticipant::restrictedSince() const {
+	return (_type == Type::Restricted || _type == Type::Banned)
+		? _date
+		: TimeId(0);
+}
+
+TimeId ChatParticipant::memberSince() const {
+	return (_type == Type::Member) ? _date : TimeId(0);
+}
+
+ChatParticipant::Type ChatParticipant::type() const {
+	return _type;
+}
+
+QString ChatParticipant::rank() const {
+	return _rank;
+}
+
+ChatParticipants::ChatParticipants(not_null<ApiWrap*> api)
+: _session(&api->session())
+, _api(&api->instance()) {
+}
+
+void ChatParticipants::requestForAdd(
+		not_null<ChannelData*> channel,
+		Fn<void(const TLMembers&)> callback) {
+	Expects(callback != nullptr);
+	_forAdd.callback = std::move(callback);
+	if (_forAdd.channel == channel) {
+		return;
+	}
+	_api.request(base::take(_forAdd.requestId)).cancel();
+
+	const auto offset = 0;
+	const auto participantsHash = uint64(0);
+
+	_forAdd.channel = channel;
+	_forAdd.requestId = _api.request(MTPchannels_GetParticipants(
+		channel->inputChannel(),
+		MTP_channelParticipantsRecent(),
+		MTP_int(offset),
+		MTP_int(channel->session().serverConfig().chatSizeMax),
+		MTP_long(participantsHash)
+	)).done([=](const MTPchannels_ChannelParticipants &result) {
+		result.match([&](const MTPDchannels_channelParticipants &data) {
+			base::take(_forAdd).callback(data);
+		}, [&](const MTPDchannels_channelParticipantsNotModified &) {
+			base::take(_forAdd);
+			LOG(("API Error: "
+				"channels.channelParticipantsNotModified received!"));
+		});
+	}).fail([=] {
+		base::take(_forAdd);
+	}).send();
+}
+
+void ChatParticipants::requestLast(not_null<ChannelData*> channel) {
+	if (!channel->isMegagroup()
+		|| !channel->canViewMembers()
+		|| _participantsRequests.contains(channel)) {
+		return;
+	}
+
+	const auto offset = 0;
+	const auto participantsHash = uint64(0);
+	const auto requestId = _api.request(MTPchannels_GetParticipants(
+		channel->inputChannel(),
+		MTP_channelParticipantsRecent(),
+		MTP_int(offset),
+		MTP_int(channel->session().serverConfig().chatSizeMax),
+		MTP_long(participantsHash)
+	)).done([=](const MTPchannels_ChannelParticipants &result) {
+		_participantsRequests.remove(channel);
+
+		result.match([&](const MTPDchannels_channelParticipants &data) {
+			const auto &[availableCount, list] = Parse(channel, data);
+			ApplyLastList(channel, availableCount, list);
+		}, [](const MTPDchannels_channelParticipantsNotModified &) {
+			LOG(("API Error: "
+				"channels.channelParticipantsNotModified received!"));
+		});
+	}).fail([this, channel] {
+		_participantsRequests.remove(channel);
+	}).send();
+
+	_participantsRequests[channel] = requestId;
+}
+
+void ChatParticipants::requestBots(not_null<ChannelData*> channel) {
+	if (!channel->isMegagroup() || _botsRequests.contains(channel)) {
+		return;
+	}
+
+	const auto offset = 0;
+	const auto participantsHash = uint64(0);
+	const auto requestId = _api.request(MTPchannels_GetParticipants(
+		channel->inputChannel(),
+		MTP_channelParticipantsBots(),
+		MTP_int(offset),
+		MTP_int(channel->session().serverConfig().chatSizeMax),
+		MTP_long(participantsHash)
+	)).done([=](const MTPchannels_ChannelParticipants &result) {
+		_botsRequests.remove(channel);
+		result.match([&](const MTPDchannels_channelParticipants &data) {
+			const auto &[availableCount, list] = Parse(channel, data);
+			ApplyBotsList(channel, availableCount, list);
+		}, [](const MTPDchannels_channelParticipantsNotModified &) {
+			LOG(("API Error: "
+				"channels.channelParticipantsNotModified received!"));
+		});
+	}).fail([=](const MTP::Error &error) {
+		_botsRequests.remove(channel);
+		if (error.type() == u"CHANNEL_MONOFORUM_UNSUPPORTED"_q) {
+			channel->mgInfo->bots.clear();
+			channel->mgInfo->botStatus = -1;
+			channel->session().changes().peerUpdated(
+				channel,
+				Data::PeerUpdate::Flag::FullInfo);
+		}
+	}).send();
+
+	_botsRequests[channel] = requestId;
+}
+
+void ChatParticipants::requestAdmins(not_null<ChannelData*> channel) {
+	if (!channel->isMegagroup() || _adminsRequests.contains(channel)) {
+		return;
+	}
+
+	const auto offset = 0;
+	const auto participantsHash = uint64(0);
+	const auto requestId = _api.request(MTPchannels_GetParticipants(
+		channel->inputChannel(),
+		MTP_channelParticipantsAdmins(),
+		MTP_int(offset),
+		MTP_int(channel->session().serverConfig().chatSizeMax),
+		MTP_long(participantsHash)
+	)).done([=](const MTPchannels_ChannelParticipants &result) {
+		channel->mgInfo->adminsLoaded = true;
+		_adminsRequests.remove(channel);
+		result.match([&](const MTPDchannels_channelParticipants &data) {
+			channel->owner().processUsers(data.vusers());
+			ApplyMegagroupAdmins(channel, ParseList(data, channel));
+		}, [](const MTPDchannels_channelParticipantsNotModified &) {
+			LOG(("API Error: "
+				"channels.channelParticipantsNotModified received!"));
+		});
+	}).fail([=] {
+		channel->mgInfo->adminsLoaded = true;
+		_adminsRequests.remove(channel);
+	}).send();
+
+	_adminsRequests[channel] = requestId;
+}
+
+void ChatParticipants::requestCountDelayed(
+		not_null<ChannelData*> channel) {
+	_participantsCountRequestTimer.call(
+		kReloadChannelMembersTimeout,
+		[=] { channel->updateFullForced(); });
+}
+
+void ChatParticipants::add(
+		std::shared_ptr<Ui::Show> show,
+		not_null<PeerData*> peer,
+		const std::vector<not_null<UserData*>> &users,
+		bool passGroupHistory,
+		Fn<void(bool)> done) {
+	if (const auto chat = peer->asChat()) {
+		for (const auto &user : users) {
+			_api.request(MTPmessages_AddChatUser(
+				chat->inputChat(),
+				user->inputUser(),
+				MTP_int(passGroupHistory ? kForwardMessagesOnAdd : 0)
+			)).done([=](const MTPmessages_InvitedUsers &result) {
+				const auto &data = result.data();
+				chat->session().api().applyUpdates(data.vupdates());
+				if (done) done(true);
+				ChatInviteForbidden(
+					show,
+					chat,
+					CollectForbiddenUsers(&chat->session(), result));
+			}).fail([=](const MTP::Error &error) {
+				const auto type = error.type();
+				ShowAddParticipantsError(show, type, peer, user);
+				if (done) done(false);
+			}).afterDelay(kSmallDelayMs).send();
+		}
+	} else if (const auto channel = peer->asChannel()) {
+		const auto hasBot = ranges::any_of(users, &UserData::isBot);
+		if (!peer->isMegagroup() && hasBot) {
+			ShowAddParticipantsError(
+				show,
+				u"USER_BOT"_q,
+				peer,
+				{ .users = users });
+			return;
+		}
+		auto list = QVector<MTPInputUser>();
+		list.reserve(std::min(int(users.size()), int(kMaxUsersPerInvite)));
+		const auto send = [&] {
+			const auto callback = base::take(done);
+			_api.request(MTPchannels_InviteToChannel(
+				channel->inputChannel(),
+				MTP_vector<MTPInputUser>(list)
+			)).done([=](const MTPmessages_InvitedUsers &result) {
+				const auto &data = result.data();
+				channel->session().api().applyUpdates(data.vupdates());
+				requestCountDelayed(channel);
+				if (callback) callback(true);
+				ChatInviteForbidden(
+					show,
+					channel,
+					CollectForbiddenUsers(&channel->session(), result));
+			}).fail([=](const MTP::Error &error) {
+				ShowAddParticipantsError(show, error.type(), peer, {
+					.users = users,
+				});
+				if (callback) callback(false);
+			}).afterDelay(kSmallDelayMs).send();
+		};
+		for (const auto &user : users) {
+			list.push_back(user->inputUser());
+			if (list.size() == kMaxUsersPerInvite) {
+				send();
+				list.clear();
+			}
+		}
+		if (!list.empty()) {
+			send();
+		}
+	} else {
+		Unexpected("User in ChatParticipants::add.");
+	}
+}
+
+ChatParticipants::Parsed ChatParticipants::Parse(
+		not_null<ChannelData*> channel,
+		const TLMembers &data) {
+	channel->owner().processUsers(data.vusers());
+	channel->owner().processChats(data.vchats());
+	auto list = ParseList(data, channel);
+	if (channel->mgInfo) {
+		RefreshChannelAdmins(channel, list);
+	}
+	return { data.vcount().v, std::move(list) };
+}
+
+ChatParticipants::Parsed ChatParticipants::ParseRecent(
+		not_null<ChannelData*> channel,
+		const TLMembers &data) {
+	const auto result = Parse(channel, data);
+	const auto applyLast = channel->isMegagroup()
+		&& channel->canViewMembers()
+		&& (channel->mgInfo->lastParticipants.size() <= result.list.size());
+	if (applyLast) {
+		ApplyLastList(channel, result.availableCount, result.list);
+	}
+	return result;
+}
+
+void ChatParticipants::Restrict(
+		not_null<ChannelData*> channel,
+		not_null<PeerData*> participant,
+		ChatRestrictionsInfo oldRights,
+		ChatRestrictionsInfo newRights,
+		Fn<void()> onDone,
+		Fn<void()> onFail) {
+	channel->session().api().request(MTPchannels_EditBanned(
+		channel->inputChannel(),
+		participant->input(),
+		RestrictionsToMTP(newRights)
+	)).done([=](const MTPUpdates &result) {
+		channel->session().api().applyUpdates(result);
+		channel->applyEditBanned(participant, oldRights, newRights);
+		if (onDone) {
+			onDone();
+		}
+	}).fail([=] {
+		if (onFail) {
+			onFail();
+		}
+	}).send();
+}
+
+void ChatParticipants::requestSelf(not_null<ChannelData*> channel) {
+	if (_selfParticipantRequests.contains(channel)) {
+		return;
+	}
+
+	const auto finalize = [=](
+			UserId inviter = -1,
+			TimeId inviteDate = 0,
+			bool inviteViaRequest = false) {
+		channel->inviter = inviter;
+		channel->inviteDate = inviteDate;
+		channel->inviteViaRequest = inviteViaRequest;
+		if (const auto history = channel->owner().historyLoaded(channel)) {
+			if (history->lastMessageKnown()) {
+				history->checkLocalMessages();
+				history->owner().sendHistoryChangeNotifications();
+			} else {
+				history->owner().histories().requestDialogEntry(history);
+			}
+		}
+	};
+	_selfParticipantRequests.emplace(channel);
+	_api.request(MTPchannels_GetParticipant(
+		channel->inputChannel(),
+		MTP_inputPeerSelf()
+	)).done([=](const MTPchannels_ChannelParticipant &result) {
+		_selfParticipantRequests.erase(channel);
+		result.match([&](const MTPDchannels_channelParticipant &data) {
+			channel->owner().processUsers(data.vusers());
+
+			const auto &participant = data.vparticipant();
+			participant.match([&](const MTPDchannelParticipantSelf &data) {
+				finalize(
+					data.vinviter_id().v,
+					data.vdate().v,
+					data.is_via_request());
+			}, [&](const MTPDchannelParticipantCreator &) {
+				if (channel->mgInfo) {
+					channel->mgInfo->creator = channel->session().user();
+				}
+				finalize(channel->session().userId(), channel->date);
+			}, [&](const MTPDchannelParticipantAdmin &data) {
+				const auto inviter = data.is_self()
+					? data.vinviter_id().value_or(-1)
+					: -1;
+				finalize(inviter, data.vdate().v);
+			}, [&](const MTPDchannelParticipantBanned &data) {
+				LOG(("API Error: Got self banned participant."));
+				finalize();
+			}, [&](const MTPDchannelParticipant &data) {
+				LOG(("API Error: Got self regular participant."));
+				finalize();
+			}, [&](const MTPDchannelParticipantLeft &data) {
+				LOG(("API Error: Got self left participant."));
+				finalize();
+			});
+		});
+	}).fail([=](const MTP::Error &error) {
+		_selfParticipantRequests.erase(channel);
+		if (error.type() == u"CHANNEL_PRIVATE"_q) {
+			channel->privateErrorReceived();
+		}
+		finalize();
+	}).afterDelay(kSmallDelayMs).send();
+}
+
+void ChatParticipants::kick(
+		not_null<ChatData*> chat,
+		not_null<PeerData*> participant) {
+	Expects(participant->isUser());
+
+	_api.request(MTPmessages_DeleteChatUser(
+		MTP_flags(0),
+		chat->inputChat(),
+		participant->asUser()->inputUser()
+	)).done([=](const MTPUpdates &result) {
+		chat->session().api().applyUpdates(result);
+	}).send();
+}
+
+void ChatParticipants::kick(
+		not_null<ChannelData*> channel,
+		not_null<PeerData*> participant,
+		ChatRestrictionsInfo currentRights) {
+	const auto kick = KickRequest(channel, participant);
+	if (_kickRequests.contains(kick)) return;
+
+	const auto rights = ChannelData::KickedRestrictedRights(participant);
+	const auto requestId = _api.request(MTPchannels_EditBanned(
+		channel->inputChannel(),
+		participant->input(),
+		RestrictionsToMTP(rights)
+	)).done([=](const MTPUpdates &result) {
+		channel->session().api().applyUpdates(result);
+
+		_kickRequests.remove(KickRequest(channel, participant));
+		channel->applyEditBanned(participant, currentRights, rights);
+	}).fail([this, kick] {
+		_kickRequests.remove(kick);
+	}).send();
+
+	_kickRequests.emplace(kick, requestId);
+}
+
+void ChatParticipants::unblock(
+		not_null<ChannelData*> channel,
+		not_null<PeerData*> participant) {
+	const auto kick = KickRequest(channel, participant);
+	if (_kickRequests.contains(kick)) {
+		return;
+	}
+
+	const auto requestId = _api.request(MTPchannels_EditBanned(
+		channel->inputChannel(),
+		participant->input(),
+		MTP_chatBannedRights(MTP_flags(0), MTP_int(0))
+	)).done([=](const MTPUpdates &result) {
+		channel->session().api().applyUpdates(result);
+
+		_kickRequests.remove(KickRequest(channel, participant));
+		if (channel->kickedCount() > 0) {
+			channel->setKickedCount(channel->kickedCount() - 1);
+		} else {
+			channel->updateFullForced();
+		}
+	}).fail([=] {
+		_kickRequests.remove(kick);
+	}).send();
+
+	_kickRequests.emplace(kick, requestId);
+}
+
+void ChatParticipants::loadSimilarPeers(not_null<PeerData*> peer) {
+	if (const auto i = _similar.find(peer); i != end(_similar)) {
+		if (i->second.requestId
+			|| !i->second.peers.more
+			|| !peer->session().premium()) {
+			return;
+		}
+	}
+	if (const auto channel = peer->asBroadcast()) {
+		using Flag = MTPchannels_GetChannelRecommendations::Flag;
+		_similar[peer].requestId = _api.request(
+			MTPchannels_GetChannelRecommendations(
+				MTP_flags(Flag::f_channel),
+				channel->inputChannel())
+		).done([=](const MTPmessages_Chats &result) {
+			auto &similar = _similar[channel];
+			similar.requestId = 0;
+			auto parsed = ParseSimilarChannels(channel, result);
+			if (similar.peers == parsed) {
+				return;
+			}
+			similar.peers = std::move(parsed);
+			if (const auto history = channel->owner().historyLoaded(channel)) {
+				if (const auto item = history->joinedMessageInstance()) {
+					history->owner().requestItemResize(item);
+				}
+			}
+			_similarLoaded.fire_copy(channel);
+		}).send();
+	} else if (const auto bot = peer->asBot()) {
+		_similar[peer].requestId = _api.request(
+			MTPbots_GetBotRecommendations(bot->inputUser())
+		).done([=](const MTPusers_Users &result) {
+			auto &similar = _similar[peer];
+			similar.requestId = 0;
+			auto parsed = ParseSimilarBots(&peer->session(), result);
+			if (similar.peers == parsed) {
+				return;
+			}
+			similar.peers = std::move(parsed);
+			_similarLoaded.fire_copy(peer);
+		}).send();
+	}
+}
+
+auto ChatParticipants::similar(not_null<PeerData*> peer)
+-> const Peers & {
+	const auto i = (peer->isBroadcast() || peer->isBot())
+		? _similar.find(peer)
+		: end(_similar);
+	if (i != end(_similar)) {
+		return i->second.peers;
+	}
+	static const auto empty = Peers();
+	return empty;
+}
+
+auto ChatParticipants::similarLoaded() const
+-> rpl::producer<not_null<PeerData*>> {
+	return _similarLoaded.events();
+}
+
+void ChatParticipants::loadRecommendations() {
+	if (_recommendationsLoaded.current() || _recommendations.requestId) {
+		return;
+	}
+	_recommendations.requestId = _api.request(
+		MTPchannels_GetChannelRecommendations(
+			MTP_flags(0),
+			MTP_inputChannelEmpty())
+	).done([=](const MTPmessages_Chats &result) {
+		_recommendations.requestId = 0;
+		auto parsed = ParseSimilarChannels(_session, result);
+		_recommendations.peers = std::move(parsed);
+		_recommendations.peers.more = 0;
+		_recommendationsLoaded = true;
+	}).send();
+}
+
+const ChatParticipants::Peers &ChatParticipants::recommendations() const {
+	return _recommendations.peers;
+}
+
+rpl::producer<> ChatParticipants::recommendationsLoaded() const {
+	return _recommendationsLoaded.changes() | rpl::to_empty;
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_chat_participants.h

@@ -0,0 +1,197 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "data/data_chat_participant_status.h"
+#include "mtproto/sender.h"
+#include "base/timer.h"
+
+class ApiWrap;
+class ChannelData;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Ui {
+class Show;
+} // namespace Ui
+
+namespace Api {
+
+class ChatParticipant final {
+public:
+	enum class Type {
+		Creator,
+		Admin,
+		Member,
+		Restricted,
+		Left,
+		Banned,
+	};
+
+	explicit ChatParticipant(
+		const MTPChannelParticipant &p,
+		not_null<PeerData*> peer);
+	ChatParticipant(
+		Type type,
+		PeerId peerId,
+		UserId by,
+		ChatRestrictionsInfo restrictions,
+		ChatAdminRightsInfo rights,
+		bool canBeEdited = false,
+		QString rank = QString());
+
+	bool isUser() const;
+	bool isCreator() const;
+	bool isCreatorOrAdmin() const;
+	bool isKicked() const;
+	bool canBeEdited() const;
+
+	UserId by() const;
+	PeerId id() const;
+	UserId userId() const;
+
+	ChatRestrictionsInfo restrictions() const;
+	ChatAdminRightsInfo rights() const;
+
+	TimeId subscriptionDate() const;
+	TimeId promotedSince() const;
+	TimeId restrictedSince() const;
+	TimeId memberSince() const;
+
+	Type type() const;
+	QString rank() const;
+
+	void tryApplyCreatorTo(not_null<ChannelData*> channel) const;
+private:
+	Type _type = Type::Member;
+
+	PeerId _peer;
+	UserId _by; // Banned/Restricted/Promoted.
+
+	bool _canBeEdited = false;
+
+	QString _rank;
+	TimeId _subscriptionDate = 0;
+	TimeId _date = 0;
+
+	ChatRestrictionsInfo _restrictions;
+	ChatAdminRightsInfo _rights;
+};
+
+class ChatParticipants final {
+public:
+	struct Parsed {
+		const int availableCount;
+		const std::vector<ChatParticipant> list;
+	};
+
+	using TLMembers = MTPDchannels_channelParticipants;
+	using Members = const std::vector<ChatParticipant> &;
+	explicit ChatParticipants(not_null<ApiWrap*> api);
+
+	void requestLast(not_null<ChannelData*> channel);
+	void requestBots(not_null<ChannelData*> channel);
+	void requestAdmins(not_null<ChannelData*> channel);
+	void requestCountDelayed(not_null<ChannelData*> channel);
+
+	static Parsed Parse(
+		not_null<ChannelData*> channel,
+		const TLMembers &data);
+	static Parsed ParseRecent(
+		not_null<ChannelData*> channel,
+		const TLMembers &data);
+	static void Restrict(
+		not_null<ChannelData*> channel,
+		not_null<PeerData*> participant,
+		ChatRestrictionsInfo oldRights,
+		ChatRestrictionsInfo newRights,
+		Fn<void()> onDone,
+		Fn<void()> onFail);
+	void add(
+		std::shared_ptr<Ui::Show> show,
+		not_null<PeerData*> peer,
+		const std::vector<not_null<UserData*>> &users,
+		bool passGroupHistory = true,
+		Fn<void(bool)> done = nullptr);
+
+	void requestSelf(not_null<ChannelData*> channel);
+
+	void requestForAdd(
+		not_null<ChannelData*> channel,
+		Fn<void(const TLMembers&)> callback);
+
+	void kick(
+		not_null<ChatData*> chat,
+		not_null<PeerData*> participant);
+	void kick(
+		not_null<ChannelData*> channel,
+		not_null<PeerData*> participant,
+		ChatRestrictionsInfo currentRights);
+	void unblock(
+		not_null<ChannelData*> channel,
+		not_null<PeerData*> participant);
+
+	void loadSimilarPeers(not_null<PeerData*> peer);
+
+	struct Peers {
+		std::vector<not_null<PeerData*>> list;
+		int more = 0;
+
+		friend inline bool operator==(
+			const Peers &,
+			const Peers &) = default;
+	};
+	[[nodiscard]] const Peers &similar(not_null<PeerData*> peer);
+	[[nodiscard]] auto similarLoaded() const
+		-> rpl::producer<not_null<PeerData*>>;
+
+	void loadRecommendations();
+	[[nodiscard]] const Peers &recommendations() const;
+	[[nodiscard]] rpl::producer<> recommendationsLoaded() const;
+
+private:
+	struct SimilarPeers {
+		Peers peers;
+		mtpRequestId requestId = 0;
+	};
+
+	const not_null<Main::Session*> _session;
+
+	MTP::Sender _api;
+
+	using PeerRequests = base::flat_map<PeerData*, mtpRequestId>;
+
+	PeerRequests _participantsRequests;
+	PeerRequests _botsRequests;
+	PeerRequests _adminsRequests;
+	base::DelayedCallTimer _participantsCountRequestTimer;
+
+	struct {
+		ChannelData *channel = nullptr;
+		mtpRequestId requestId = 0;
+		Fn<void(const TLMembers&)> callback;
+	} _forAdd;
+
+	base::flat_set<not_null<ChannelData*>> _selfParticipantRequests;
+
+	using KickRequest = std::pair<
+		not_null<ChannelData*>,
+		not_null<PeerData*>>;
+	base::flat_map<KickRequest, mtpRequestId> _kickRequests;
+
+	base::flat_map<not_null<PeerData*>, SimilarPeers> _similar;
+	rpl::event_stream<not_null<PeerData*>> _similarLoaded;
+
+	SimilarPeers _recommendations;
+	rpl::variable<bool> _recommendationsLoaded = false;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_cloud_password.cpp

@@ -0,0 +1,581 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_cloud_password.h"
+
+#include "apiwrap.h"
+#include "base/random.h"
+#include "core/core_cloud_password.h"
+#include "passport/passport_encryption.h"
+
+#include "base/unixtime.h"
+#include "base/call_delayed.h"
+
+namespace Api {
+namespace {
+
+[[nodiscard]] Core::CloudPasswordState ProcessMtpState(
+		const MTPaccount_password &state) {
+	return state.match([&](const MTPDaccount_password &data) {
+		base::RandomAddSeed(bytes::make_span(data.vsecure_random().v));
+		return Core::ParseCloudPasswordState(data);
+	});
+}
+
+} // namespace
+
+CloudPassword::CloudPassword(not_null<ApiWrap*> api)
+: _api(&api->instance()) {
+}
+
+void CloudPassword::apply(Core::CloudPasswordState state) {
+	if (_state) {
+		*_state = std::move(state);
+	} else {
+		_state = std::make_unique<Core::CloudPasswordState>(std::move(state));
+	}
+	_stateChanges.fire_copy(*_state);
+}
+
+void CloudPassword::reload() {
+	if (_requestId) {
+		return;
+	}
+	_requestId = _api.request(MTPaccount_GetPassword(
+	)).done([=](const MTPaccount_Password &result) {
+		_requestId = 0;
+		apply(ProcessMtpState(result));
+	}).fail([=] {
+		_requestId = 0;
+	}).send();
+}
+
+void CloudPassword::clearUnconfirmedPassword() {
+	_requestId = _api.request(MTPaccount_CancelPasswordEmail(
+	)).done([=] {
+		_requestId = 0;
+		reload();
+	}).fail([=] {
+		_requestId = 0;
+		reload();
+	}).send();
+}
+
+rpl::producer<Core::CloudPasswordState> CloudPassword::state() const {
+	return _state
+		? _stateChanges.events_starting_with_copy(*_state)
+		: (_stateChanges.events() | rpl::type_erased);
+}
+
+auto CloudPassword::stateCurrent() const
+-> std::optional<Core::CloudPasswordState> {
+	return _state
+		? base::make_optional(*_state)
+		: std::nullopt;
+}
+
+auto CloudPassword::resetPassword()
+-> rpl::producer<CloudPassword::ResetRetryDate, QString> {
+	return [=](auto consumer) {
+		_api.request(MTPaccount_ResetPassword(
+		)).done([=](const MTPaccount_ResetPasswordResult &result) {
+			result.match([&](const MTPDaccount_resetPasswordOk &data) {
+				reload();
+			}, [&](const MTPDaccount_resetPasswordRequestedWait &data) {
+				if (!_state) {
+					reload();
+					return;
+				}
+				const auto until = data.vuntil_date().v;
+				if (_state->pendingResetDate != until) {
+					_state->pendingResetDate = until;
+					_stateChanges.fire_copy(*_state);
+				}
+			}, [&](const MTPDaccount_resetPasswordFailedWait &data) {
+				consumer.put_next_copy(data.vretry_date().v);
+			});
+			consumer.put_done();
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).send();
+
+		return rpl::lifetime();
+	};
+}
+
+auto CloudPassword::cancelResetPassword()
+-> rpl::producer<rpl::no_value, QString> {
+	return [=](auto consumer) {
+		_api.request(MTPaccount_DeclinePasswordReset(
+		)).done([=] {
+			reload();
+			consumer.put_done();
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).send();
+
+		return rpl::lifetime();
+	};
+}
+
+rpl::producer<CloudPassword::SetOk, QString> CloudPassword::set(
+		const QString &oldPassword,
+		const QString &newPassword,
+		const QString &hint,
+		bool hasRecoveryEmail,
+		const QString &recoveryEmail) {
+
+	const auto generatePasswordCheck = [=](
+			const Core::CloudPasswordState &latestState) {
+		if (oldPassword.isEmpty() || !latestState.hasPassword) {
+			return Core::CloudPasswordResult{
+				MTP_inputCheckPasswordEmpty()
+			};
+		}
+		const auto hash = Core::ComputeCloudPasswordHash(
+			latestState.mtp.request.algo,
+			bytes::make_span(oldPassword.toUtf8()));
+		return Core::ComputeCloudPasswordCheck(
+			latestState.mtp.request,
+			hash);
+	};
+
+	const auto finish = [=](auto consumer, int unconfirmedEmailLengthCode) {
+		_api.request(MTPaccount_GetPassword(
+		)).done([=](const MTPaccount_Password &result) {
+			apply(ProcessMtpState(result));
+			if (unconfirmedEmailLengthCode) {
+				consumer.put_next(SetOk{ unconfirmedEmailLengthCode });
+			} else {
+				consumer.put_done();
+			}
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).handleFloodErrors().send();
+	};
+
+	const auto sendMTPaccountUpdatePasswordSettings = [=](
+			const Core::CloudPasswordState &latestState,
+			const QByteArray &secureSecret,
+			auto consumer) {
+		const auto newPasswordBytes = newPassword.toUtf8();
+		const auto newPasswordHash = Core::ComputeCloudPasswordDigest(
+			latestState.mtp.newPassword,
+			bytes::make_span(newPasswordBytes));
+		if (!newPassword.isEmpty() && newPasswordHash.modpow.empty()) {
+			consumer.put_error("INTERNAL_SERVER_ERROR");
+			return;
+		}
+		using Flag = MTPDaccount_passwordInputSettings::Flag;
+		const auto flags = Flag::f_new_algo
+			| Flag::f_new_password_hash
+			| Flag::f_hint
+			| (secureSecret.isEmpty() ? Flag(0) : Flag::f_new_secure_settings)
+			| ((!hasRecoveryEmail) ? Flag(0) : Flag::f_email);
+
+		auto newSecureSecret = bytes::vector();
+		auto newSecureSecretId = 0ULL;
+		if (!secureSecret.isEmpty()) {
+			newSecureSecretId = Passport::CountSecureSecretId(
+				bytes::make_span(secureSecret));
+			newSecureSecret = Passport::EncryptSecureSecret(
+				bytes::make_span(secureSecret),
+				Core::ComputeSecureSecretHash(
+					latestState.mtp.newSecureSecret,
+					bytes::make_span(newPasswordBytes)));
+		}
+		const auto settings = MTP_account_passwordInputSettings(
+			MTP_flags(flags),
+			Core::PrepareCloudPasswordAlgo(newPassword.isEmpty()
+				? v::null
+				: latestState.mtp.newPassword),
+			newPassword.isEmpty()
+				? MTP_bytes()
+				: MTP_bytes(newPasswordHash.modpow),
+			MTP_string(hint),
+			MTP_string(recoveryEmail),
+			MTP_secureSecretSettings(
+				Core::PrepareSecureSecretAlgo(
+					latestState.mtp.newSecureSecret),
+				MTP_bytes(newSecureSecret),
+				MTP_long(newSecureSecretId)));
+		_api.request(MTPaccount_UpdatePasswordSettings(
+			generatePasswordCheck(latestState).result,
+			settings
+		)).done([=] {
+			finish(consumer, 0);
+		}).fail([=](const MTP::Error &error) {
+			const auto &type = error.type();
+			const auto prefix = u"EMAIL_UNCONFIRMED_"_q;
+			if (type.startsWith(prefix)) {
+				const auto codeLength = base::StringViewMid(
+					type,
+					prefix.size()).toInt();
+
+				finish(consumer, codeLength);
+			} else {
+				consumer.put_error_copy(type);
+			}
+		}).handleFloodErrors().send();
+	};
+
+	return [=](auto consumer) {
+		_api.request(MTPaccount_GetPassword(
+		)).done([=](const MTPaccount_Password &result) {
+			const auto latestState = ProcessMtpState(result);
+
+			if (latestState.hasPassword
+					&& !oldPassword.isEmpty()
+					&& !newPassword.isEmpty()) {
+
+				_api.request(MTPaccount_GetPasswordSettings(
+					generatePasswordCheck(latestState).result
+				)).done([=](const MTPaccount_PasswordSettings &result) {
+					using Settings = MTPDaccount_passwordSettings;
+					const auto &data = result.match([&](
+							const Settings &data) -> const Settings & {
+						return data;
+					});
+					auto secureSecret = QByteArray();
+					if (const auto wrapped = data.vsecure_settings()) {
+						using Secure = MTPDsecureSecretSettings;
+						const auto &settings = wrapped->match([](
+								const Secure &data) -> const Secure & {
+							return data;
+						});
+						const auto passwordUtf = oldPassword.toUtf8();
+						const auto secret = Passport::DecryptSecureSecret(
+							bytes::make_span(settings.vsecure_secret().v),
+							Core::ComputeSecureSecretHash(
+								Core::ParseSecureSecretAlgo(
+									settings.vsecure_algo()),
+								bytes::make_span(passwordUtf)));
+						if (secret.empty()) {
+							LOG(("API Error: "
+								"Failed to decrypt secure secret."));
+							consumer.put_error("SUGGEST_SECRET_RESET");
+							return;
+						} else if (Passport::CountSecureSecretId(secret)
+								!= settings.vsecure_secret_id().v) {
+							LOG(("API Error: Wrong secure secret id."));
+							consumer.put_error("SUGGEST_SECRET_RESET");
+							return;
+						} else {
+							secureSecret = QByteArray(
+								reinterpret_cast<const char*>(secret.data()),
+								secret.size());
+						}
+					}
+					_api.request(MTPaccount_GetPassword(
+					)).done([=](const MTPaccount_Password &result) {
+						const auto latestState = ProcessMtpState(result);
+						sendMTPaccountUpdatePasswordSettings(
+							latestState,
+							secureSecret,
+							consumer);
+					}).fail([=](const MTP::Error &error) {
+						consumer.put_error_copy(error.type());
+					}).send();
+				}).fail([=](const MTP::Error &error) {
+					consumer.put_error_copy(error.type());
+				}).send();
+			} else {
+				sendMTPaccountUpdatePasswordSettings(
+					latestState,
+					QByteArray(),
+					consumer);
+			}
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).send();
+		return rpl::lifetime();
+	};
+}
+
+rpl::producer<rpl::no_value, QString> CloudPassword::check(
+		const QString &password) {
+	return [=](auto consumer) {
+		_api.request(MTPaccount_GetPassword(
+		)).done([=](const MTPaccount_Password &result) {
+			const auto latestState = ProcessMtpState(result);
+			const auto input = [&] {
+				if (password.isEmpty()) {
+					return Core::CloudPasswordResult{
+						MTP_inputCheckPasswordEmpty()
+					};
+				}
+				const auto hash = Core::ComputeCloudPasswordHash(
+					latestState.mtp.request.algo,
+					bytes::make_span(password.toUtf8()));
+				return Core::ComputeCloudPasswordCheck(
+					latestState.mtp.request,
+					hash);
+			}();
+
+			_api.request(MTPaccount_GetPasswordSettings(
+				input.result
+			)).done([=](const MTPaccount_PasswordSettings &result) {
+				consumer.put_done();
+			}).fail([=](const MTP::Error &error) {
+				consumer.put_error_copy(error.type());
+			}).send();
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).send();
+
+		return rpl::lifetime();
+	};
+}
+
+rpl::producer<rpl::no_value, QString> CloudPassword::confirmEmail(
+		const QString &code) {
+	return [=](auto consumer) {
+		_api.request(MTPaccount_ConfirmPasswordEmail(
+			MTP_string(code)
+		)).done([=] {
+			_api.request(MTPaccount_GetPassword(
+			)).done([=](const MTPaccount_Password &result) {
+				apply(ProcessMtpState(result));
+				consumer.put_done();
+			}).fail([=](const MTP::Error &error) {
+				consumer.put_error_copy(error.type());
+			}).send();
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).handleFloodErrors().send();
+
+		return rpl::lifetime();
+	};
+}
+
+rpl::producer<rpl::no_value, QString> CloudPassword::resendEmailCode() {
+	return [=](auto consumer) {
+		_api.request(MTPaccount_ResendPasswordEmail(
+		)).done([=] {
+			_api.request(MTPaccount_GetPassword(
+			)).done([=](const MTPaccount_Password &result) {
+				apply(ProcessMtpState(result));
+				consumer.put_done();
+			}).fail([=](const MTP::Error &error) {
+				consumer.put_error_copy(error.type());
+			}).send();
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).handleFloodErrors().send();
+
+		return rpl::lifetime();
+	};
+}
+
+rpl::producer<CloudPassword::SetOk, QString> CloudPassword::setEmail(
+		const QString &oldPassword,
+		const QString &recoveryEmail) {
+	const auto generatePasswordCheck = [=](
+			const Core::CloudPasswordState &latestState) {
+		if (oldPassword.isEmpty() || !latestState.hasPassword) {
+			return Core::CloudPasswordResult{
+				MTP_inputCheckPasswordEmpty()
+			};
+		}
+		const auto hash = Core::ComputeCloudPasswordHash(
+			latestState.mtp.request.algo,
+			bytes::make_span(oldPassword.toUtf8()));
+		return Core::ComputeCloudPasswordCheck(
+			latestState.mtp.request,
+			hash);
+	};
+
+	const auto finish = [=](auto consumer, int unconfirmedEmailLengthCode) {
+		_api.request(MTPaccount_GetPassword(
+		)).done([=](const MTPaccount_Password &result) {
+			apply(ProcessMtpState(result));
+			if (unconfirmedEmailLengthCode) {
+				consumer.put_next(SetOk{ unconfirmedEmailLengthCode });
+			} else {
+				consumer.put_done();
+			}
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).handleFloodErrors().send();
+	};
+
+	const auto sendMTPaccountUpdatePasswordSettings = [=](
+			const Core::CloudPasswordState &latestState,
+			auto consumer) {
+		const auto settings = MTP_account_passwordInputSettings(
+			MTP_flags(MTPDaccount_passwordInputSettings::Flag::f_email),
+			MTP_passwordKdfAlgoUnknown(),
+			MTP_bytes(),
+			MTP_string(),
+			MTP_string(recoveryEmail),
+			MTPSecureSecretSettings());
+		_api.request(MTPaccount_UpdatePasswordSettings(
+			generatePasswordCheck(latestState).result,
+			settings
+		)).done([=] {
+			finish(consumer, 0);
+		}).fail([=](const MTP::Error &error) {
+			const auto &type = error.type();
+			const auto prefix = u"EMAIL_UNCONFIRMED_"_q;
+			if (type.startsWith(prefix)) {
+				const auto codeLength = base::StringViewMid(
+					type,
+					prefix.size()).toInt();
+
+				finish(consumer, codeLength);
+			} else {
+				consumer.put_error_copy(type);
+			}
+		}).handleFloodErrors().send();
+	};
+
+	return [=](auto consumer) {
+		_api.request(MTPaccount_GetPassword(
+		)).done([=](const MTPaccount_Password &result) {
+			const auto latestState = ProcessMtpState(result);
+			sendMTPaccountUpdatePasswordSettings(latestState, consumer);
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).send();
+		return rpl::lifetime();
+	};
+}
+
+rpl::producer<rpl::no_value, QString> CloudPassword::recoverPassword(
+		const QString &code,
+		const QString &newPassword,
+		const QString &newHint) {
+
+	const auto finish = [=](auto consumer) {
+		_api.request(MTPaccount_GetPassword(
+		)).done([=](const MTPaccount_Password &result) {
+			apply(ProcessMtpState(result));
+			consumer.put_done();
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).handleFloodErrors().send();
+	};
+
+	const auto sendMTPaccountUpdatePasswordSettings = [=](
+			const Core::CloudPasswordState &latestState,
+			auto consumer) {
+		const auto newPasswordBytes = newPassword.toUtf8();
+		const auto newPasswordHash = Core::ComputeCloudPasswordDigest(
+			latestState.mtp.newPassword,
+			bytes::make_span(newPasswordBytes));
+		if (!newPassword.isEmpty() && newPasswordHash.modpow.empty()) {
+			consumer.put_error("INTERNAL_SERVER_ERROR");
+			return;
+		}
+		using Flag = MTPDaccount_passwordInputSettings::Flag;
+		const auto flags = Flag::f_new_algo
+			| Flag::f_new_password_hash
+			| Flag::f_hint;
+
+		const auto settings = MTP_account_passwordInputSettings(
+			MTP_flags(flags),
+			Core::PrepareCloudPasswordAlgo(newPassword.isEmpty()
+				? v::null
+				: latestState.mtp.newPassword),
+			newPassword.isEmpty()
+				? MTP_bytes()
+				: MTP_bytes(newPasswordHash.modpow),
+			MTP_string(newHint),
+			MTP_string(),
+			MTPSecureSecretSettings());
+
+		_api.request(MTPauth_RecoverPassword(
+			MTP_flags(newPassword.isEmpty()
+				? MTPauth_RecoverPassword::Flags(0)
+				: MTPauth_RecoverPassword::Flag::f_new_settings),
+			MTP_string(code),
+			settings
+		)).done([=](const MTPauth_Authorization &result) {
+			finish(consumer);
+		}).fail([=](const MTP::Error &error) {
+			const auto &type = error.type();
+			consumer.put_error_copy(type);
+		}).handleFloodErrors().send();
+	};
+
+	return [=](auto consumer) {
+		_api.request(MTPaccount_GetPassword(
+		)).done([=](const MTPaccount_Password &result) {
+			const auto latestState = ProcessMtpState(result);
+			sendMTPaccountUpdatePasswordSettings(latestState, consumer);
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).send();
+		return rpl::lifetime();
+	};
+}
+
+rpl::producer<QString, QString> CloudPassword::requestPasswordRecovery() {
+	return [=](auto consumer) {
+		_api.request(MTPauth_RequestPasswordRecovery(
+		)).done([=](const MTPauth_PasswordRecovery &result) {
+			result.match([&](const MTPDauth_passwordRecovery &data) {
+				consumer.put_next(qs(data.vemail_pattern().v));
+			});
+			consumer.put_done();
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).send();
+		return rpl::lifetime();
+	};
+}
+
+auto CloudPassword::checkRecoveryEmailAddressCode(const QString &code)
+-> rpl::producer<rpl::no_value, QString> {
+	return [=](auto consumer) {
+		_api.request(MTPauth_CheckRecoveryPassword(
+			MTP_string(code)
+		)).done([=] {
+			consumer.put_done();
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).handleFloodErrors().send();
+
+		return rpl::lifetime();
+	};
+}
+
+void RequestLoginEmailCode(
+		MTP::Sender &api,
+		const QString &sendToEmail,
+		Fn<void(int length, const QString &pattern)> done,
+		Fn<void(const QString &error)> fail) {
+	api.request(MTPaccount_SendVerifyEmailCode(
+		MTP_emailVerifyPurposeLoginChange(),
+		MTP_string(sendToEmail)
+	)).done([=](const MTPaccount_SentEmailCode &result) {
+		done(result.data().vlength().v, qs(result.data().vemail_pattern()));
+	}).fail([=](const MTP::Error &error) {
+		fail(error.type());
+	}).send();
+}
+
+void VerifyLoginEmail(
+		MTP::Sender &api,
+		const QString &code,
+		Fn<void()> done,
+		Fn<void(const QString &error)> fail) {
+	api.request(MTPaccount_VerifyEmail(
+		MTP_emailVerifyPurposeLoginChange(),
+		MTP_emailVerificationCode(MTP_string(code))
+	)).done([=](const MTPaccount_EmailVerified &result) {
+		result.match([=](const MTPDaccount_emailVerified &data) {
+			done();
+		}, [=](const MTPDaccount_emailVerifiedLogin &data) {
+			fail(QString());
+		});
+	}).fail([=](const MTP::Error &error) {
+		fail(error.type());
+	}).send();
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_cloud_password.h

@@ -0,0 +1,84 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "mtproto/sender.h"
+
+namespace Core {
+struct CloudPasswordState;
+} // namespace Core
+
+class ApiWrap;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+class CloudPassword final {
+public:
+	struct SetOk {
+		int unconfirmedEmailLengthCode = 0;
+	};
+
+	using ResetRetryDate = int;
+	explicit CloudPassword(not_null<ApiWrap*> api);
+
+	void reload();
+	void clearUnconfirmedPassword();
+	rpl::producer<Core::CloudPasswordState> state() const;
+	std::optional<Core::CloudPasswordState> stateCurrent() const;
+
+	rpl::producer<ResetRetryDate, QString> resetPassword();
+	rpl::producer<rpl::no_value, QString> cancelResetPassword();
+
+	rpl::producer<SetOk, QString> set(
+		const QString &oldPassword,
+		const QString &newPassword,
+		const QString &hint,
+		bool hasRecoveryEmail,
+		const QString &recoveryEmail);
+	rpl::producer<rpl::no_value, QString> check(const QString &password);
+
+	rpl::producer<rpl::no_value, QString> confirmEmail(const QString &code);
+	rpl::producer<rpl::no_value, QString> resendEmailCode();
+	rpl::producer<SetOk, QString> setEmail(
+		const QString &oldPassword,
+		const QString &recoveryEmail);
+
+	rpl::producer<rpl::no_value, QString> recoverPassword(
+		const QString &code,
+		const QString &newPassword,
+		const QString &newHint);
+	rpl::producer<QString, QString> requestPasswordRecovery();
+	rpl::producer<rpl::no_value, QString> checkRecoveryEmailAddressCode(
+		const QString &code);
+
+private:
+	void apply(Core::CloudPasswordState state);
+
+	MTP::Sender _api;
+	mtpRequestId _requestId = 0;
+	std::unique_ptr<Core::CloudPasswordState> _state;
+	rpl::event_stream<Core::CloudPasswordState> _stateChanges;
+
+};
+
+void RequestLoginEmailCode(
+	MTP::Sender &api,
+	const QString &sendToEmail,
+	Fn<void(int length, const QString &pattern)> done,
+	Fn<void(const QString &error)> fail);
+void VerifyLoginEmail(
+	MTP::Sender &api,
+	const QString &code,
+	Fn<void()> done,
+	Fn<void(const QString &error)> fail);
+
+} // namespace Api

Telegram/SourceFiles/api/api_common.cpp

@@ -0,0 +1,48 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_common.h"
+
+#include "base/qt/qt_key_modifiers.h"
+#include "data/data_histories.h"
+#include "data/data_thread.h"
+#include "history/history.h"
+
+namespace Api {
+
+MTPSuggestedPost SuggestToMTP(SuggestOptions suggest) {
+	using Flag = MTPDsuggestedPost::Flag;
+	return suggest.exists
+		? MTP_suggestedPost(
+			MTP_flags((suggest.date ? Flag::f_schedule_date : Flag())
+				| (suggest.price().empty() ? Flag() : Flag::f_price)),
+			StarsAmountToTL(suggest.price()),
+			MTP_int(suggest.date))
+		: MTPSuggestedPost();
+}
+
+SendAction::SendAction(
+	not_null<Data::Thread*> thread,
+	SendOptions options)
+: history(thread->owningHistory())
+, options(options)
+, replyTo({ .messageId = { history->peer->id, thread->topicRootId() } }) {
+	replyTo.topicRootId = replyTo.messageId.msg;
+}
+
+SendOptions DefaultSendWhenOnlineOptions() {
+	return {
+		.scheduled = kScheduledUntilOnlineTimestamp,
+		.silent = base::IsCtrlPressed(),
+	};
+}
+
+MTPInputReplyTo SendAction::mtpReplyTo() const {
+	return Data::ReplyToForMTP(history, replyTo);
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_common.h

@@ -0,0 +1,86 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "data/data_drafts.h"
+
+class History;
+
+namespace Data {
+class Thread;
+} // namespace Data
+
+namespace Api {
+
+inline constexpr auto kScheduledUntilOnlineTimestamp = TimeId(0x7FFFFFFE);
+
+[[nodiscard]] MTPSuggestedPost SuggestToMTP(SuggestOptions suggest);
+
+struct SendOptions {
+	uint64 price = 0;
+	PeerData *sendAs = nullptr;
+	TimeId scheduled = 0;
+	TimeId scheduleRepeatPeriod = 0;
+	BusinessShortcutId shortcutId = 0;
+	EffectId effectId = 0;
+	int starsApproved = 0;
+	bool silent = false;
+	bool handleSupportSwitch = false;
+	bool invertCaption = false;
+	bool hideViaBot = false;
+	crl::time ttlSeconds = 0;
+	SuggestOptions suggest;
+
+	friend inline bool operator==(
+		const SendOptions &,
+		const SendOptions &) = default;
+};
+[[nodiscard]] SendOptions DefaultSendWhenOnlineOptions();
+
+enum class SendType {
+	Normal,
+	Scheduled,
+	ScheduledToUser, // For "Send when online".
+};
+
+struct SendAction {
+	explicit SendAction(
+		not_null<Data::Thread*> thread,
+		SendOptions options = SendOptions());
+
+	not_null<History*> history;
+	SendOptions options;
+	FullReplyTo replyTo;
+	bool clearDraft = true;
+	bool generateLocal = true;
+	MsgId replaceMediaOf = 0;
+
+	[[nodiscard]] MTPInputReplyTo mtpReplyTo() const;
+
+	friend inline bool operator==(
+		const SendAction &,
+		const SendAction &) = default;
+};
+
+struct MessageToSend {
+	explicit MessageToSend(SendAction action) : action(action) {
+	}
+
+	SendAction action;
+	TextWithTags textWithTags;
+	Data::WebPageDraft webPage;
+};
+
+struct RemoteFileInfo {
+	MTPInputFile file;
+	std::optional<MTPInputFile> thumb;
+	std::optional<MTPInputPhoto> videoCover;
+	std::vector<MTPInputDocument> attachedStickers;
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_confirm_phone.cpp

@@ -0,0 +1,172 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_confirm_phone.h"
+
+#include "apiwrap.h"
+#include "lang/lang_keys.h"
+#include "main/main_account.h"
+#include "main/main_session.h"
+#include "ui/boxes/confirm_box.h"
+#include "ui/boxes/confirm_phone_box.h"
+#include "ui/text/format_values.h" // Ui::FormatPhone
+#include "window/window_session_controller.h"
+
+namespace Api {
+
+ConfirmPhone::ConfirmPhone(not_null<ApiWrap*> api)
+: _api(&api->instance()) {
+}
+
+void ConfirmPhone::resolve(
+		not_null<Window::SessionController*> controller,
+		const QString &phone,
+		const QString &hash) {
+	if (_sendRequestId) {
+		return;
+	}
+	_sendRequestId = _api.request(MTPaccount_SendConfirmPhoneCode(
+		MTP_string(hash),
+		MTP_codeSettings(
+			MTP_flags(0),
+			MTPVector<MTPbytes>(),
+			MTPstring(),
+			MTPBool())
+	)).done([=](const MTPauth_SentCode &result) {
+		_sendRequestId = 0;
+
+		result.match([&](const MTPDauth_sentCode &data) {
+			const auto bad = [](const char *type) {
+				LOG(("API Error: Should not be '%1'.").arg(type));
+				return 0;
+			};
+			const auto sentCodeLength = data.vtype().match([&](
+					const MTPDauth_sentCodeTypeApp &data) {
+				LOG(("Error: should not be in-app code!"));
+				return 0;
+			}, [&](const MTPDauth_sentCodeTypeSms &data) {
+				return data.vlength().v;
+			}, [&](const MTPDauth_sentCodeTypeFragmentSms &data) {
+				return data.vlength().v;
+			}, [&](const MTPDauth_sentCodeTypeCall &data) {
+				return data.vlength().v;
+			}, [&](const MTPDauth_sentCodeTypeFlashCall &) {
+				return bad("FlashCall");
+			}, [&](const MTPDauth_sentCodeTypeMissedCall &) {
+				return bad("MissedCall");
+			}, [&](const MTPDauth_sentCodeTypeFirebaseSms &) {
+				return bad("FirebaseSms");
+			}, [&](const MTPDauth_sentCodeTypeEmailCode &) {
+				return bad("EmailCode");
+			}, [&](const MTPDauth_sentCodeTypeSmsWord &) {
+				return bad("SmsWord");
+			}, [&](const MTPDauth_sentCodeTypeSmsPhrase &) {
+				return bad("SmsPhrase");
+			}, [&](const MTPDauth_sentCodeTypeSetUpEmailRequired &) {
+				return bad("SetUpEmailRequired");
+			});
+			const auto fragmentUrl = data.vtype().match([](
+					const MTPDauth_sentCodeTypeFragmentSms &data) {
+				return qs(data.vurl());
+			}, [](const auto &) { return QString(); });
+			const auto phoneHash = qs(data.vphone_code_hash());
+			const auto timeout = [&]() -> std::optional<int> {
+				if (const auto nextType = data.vnext_type()) {
+					if (nextType->type() == mtpc_auth_codeTypeCall) {
+						return data.vtimeout().value_or(60);
+					}
+				}
+				return std::nullopt;
+			}();
+			auto box = Box<Ui::ConfirmPhoneBox>(
+				phone,
+				sentCodeLength,
+				fragmentUrl,
+				timeout);
+			const auto boxWeak = base::make_weak(box.data());
+			using LoginCode = rpl::event_stream<QString>;
+			const auto codeHandles = box->lifetime().make_state<LoginCode>();
+			controller->session().account().setHandleLoginCode([=](
+					const QString &code) {
+				codeHandles->fire_copy(code);
+			});
+			box->resendRequests(
+			) | rpl::on_next([=] {
+				_api.request(MTPauth_ResendCode(
+					MTP_flags(0),
+					MTP_string(phone),
+					MTP_string(phoneHash),
+					MTPstring() // reason
+				)).done([=] {
+					if (boxWeak) {
+						boxWeak->callDone();
+					}
+				}).send();
+			}, box->lifetime());
+			rpl::merge(
+				codeHandles->events(),
+				box->checkRequests()
+			) | rpl::on_next([=](const QString &code) {
+				if (_checkRequestId) {
+					return;
+				}
+				_checkRequestId = _api.request(MTPaccount_ConfirmPhone(
+					MTP_string(phoneHash),
+					MTP_string(code)
+				)).done([=] {
+					_checkRequestId = 0;
+					controller->show(
+						Ui::MakeInformBox(
+							tr::lng_confirm_phone_success(
+								tr::now,
+								lt_phone,
+								Ui::FormatPhone(phone))),
+						Ui::LayerOption::CloseOther);
+				}).fail([=](const MTP::Error &error) {
+					_checkRequestId = 0;
+					if (!boxWeak) {
+						return;
+					}
+
+					const auto errorText = MTP::IsFloodError(error)
+						? tr::lng_flood_error(tr::now)
+						: (error.type() == (u"PHONE_CODE_EMPTY"_q)
+							|| error.type() == (u"PHONE_CODE_INVALID"_q))
+						? tr::lng_bad_code(tr::now)
+						: Lang::Hard::ServerError();
+					boxWeak->showServerError(errorText);
+				}).handleFloodErrors().send();
+			}, box->lifetime());
+			box->boxClosing(
+			) | rpl::on_next([=] {
+				controller->session().account().setHandleLoginCode(nullptr);
+			}, box->lifetime());
+
+			controller->show(std::move(box), Ui::LayerOption::CloseOther);
+		}, [](const MTPDauth_sentCodeSuccess &) {
+			LOG(("API Error: Unexpected auth.sentCodeSuccess "
+				"(Api::ConfirmPhone)."));
+		}, [](const MTPDauth_sentCodePaymentRequired &) {
+			LOG(("API Error: Unexpected auth.sentCodePaymentRequired "
+				"(Api::ConfirmPhone)."));
+		});
+	}).fail([=](const MTP::Error &error) {
+		_sendRequestId = 0;
+		_checkRequestId = 0;
+
+		const auto errorText = MTP::IsFloodError(error)
+			? tr::lng_flood_error(tr::now)
+			: (error.code() == 400)
+			? tr::lng_confirm_phone_link_invalid(tr::now)
+			: Lang::Hard::ServerError();
+		controller->show(
+			Ui::MakeInformBox(errorText),
+			Ui::LayerOption::CloseOther);
+	}).handleFloodErrors().send();
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_confirm_phone.h

@@ -0,0 +1,36 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "mtproto/sender.h"
+
+class ApiWrap;
+
+namespace Window {
+class SessionController;
+} // namespace Window
+
+namespace Api {
+
+class ConfirmPhone final {
+public:
+	explicit ConfirmPhone(not_null<ApiWrap*> api);
+
+	void resolve(
+		not_null<Window::SessionController*> controller,
+		const QString &phone,
+		const QString &hash);
+
+private:
+	MTP::Sender _api;
+	mtpRequestId _sendRequestId = 0;
+	mtpRequestId _checkRequestId = 0;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_credits.cpp

@@ -0,0 +1,415 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_credits.h"
+
+#include "api/api_credits_history_entry.h"
+#include "api/api_premium.h"
+#include "api/api_statistics_data_deserialize.h"
+#include "api/api_updates.h"
+#include "apiwrap.h"
+#include "base/unixtime.h"
+#include "data/components/credits.h"
+#include "data/data_channel.h"
+#include "data/data_document.h"
+#include "data/data_peer.h"
+#include "data/data_photo.h"
+#include "data/data_session.h"
+#include "data/data_user.h"
+#include "main/main_app_config.h"
+#include "main/main_session.h"
+
+namespace Api {
+namespace {
+
+constexpr auto kTransactionsLimit = 100;
+
+[[nodiscard]] Data::SubscriptionEntry SubscriptionFromTL(
+		const MTPStarsSubscription &tl,
+		not_null<PeerData*> peer) {
+	return Data::SubscriptionEntry{
+		.id = qs(tl.data().vid()),
+		.inviteHash = qs(tl.data().vchat_invite_hash().value_or_empty()),
+		.title = qs(tl.data().vtitle().value_or_empty()),
+		.slug = qs(tl.data().vinvoice_slug().value_or_empty()),
+		.until = base::unixtime::parse(tl.data().vuntil_date().v),
+		.subscription = Data::PeerSubscription{
+			.credits = tl.data().vpricing().data().vamount().v,
+			.period = tl.data().vpricing().data().vperiod().v,
+		},
+		.barePeerId = peerFromMTP(tl.data().vpeer()).value,
+		.photoId = (tl.data().vphoto()
+			? peer->owner().photoFromWeb(
+				*tl.data().vphoto(),
+				ImageLocation())->id
+			: 0),
+		.cancelled = tl.data().is_canceled(),
+		.cancelledByBot = tl.data().is_bot_canceled(),
+		.expired = (base::unixtime::now() > tl.data().vuntil_date().v),
+		.canRefulfill = tl.data().is_can_refulfill(),
+	};
+}
+
+[[nodiscard]] Data::CreditsStatusSlice StatusFromTL(
+		const MTPpayments_StarsStatus &status,
+		not_null<PeerData*> peer) {
+	const auto &data = status.data();
+	peer->owner().processUsers(data.vusers());
+	peer->owner().processChats(data.vchats());
+	auto entries = std::vector<Data::CreditsHistoryEntry>();
+	if (const auto history = data.vhistory()) {
+		entries.reserve(history->v.size());
+		for (const auto &tl : history->v) {
+			entries.push_back(CreditsHistoryEntryFromTL(tl, peer));
+		}
+	}
+	auto subscriptions = std::vector<Data::SubscriptionEntry>();
+	if (const auto history = data.vsubscriptions()) {
+		subscriptions.reserve(history->v.size());
+		for (const auto &tl : history->v) {
+			subscriptions.push_back(SubscriptionFromTL(tl, peer));
+		}
+	}
+	return Data::CreditsStatusSlice{
+		.list = std::move(entries),
+		.subscriptions = std::move(subscriptions),
+		.balance = CreditsAmountFromTL(status.data().vbalance()),
+		.subscriptionsMissingBalance
+			= status.data().vsubscriptions_missing_balance().value_or_empty(),
+		.allLoaded = !status.data().vnext_offset().has_value()
+			&& !status.data().vsubscriptions_next_offset().has_value(),
+		.token = qs(status.data().vnext_offset().value_or_empty()),
+		.tokenSubscriptions = qs(
+			status.data().vsubscriptions_next_offset().value_or_empty()),
+	};
+}
+
+} // namespace
+
+CreditsTopupOptions::CreditsTopupOptions(not_null<PeerData*> peer)
+: _peer(peer)
+, _api(&peer->session().api().instance()) {
+}
+
+rpl::producer<rpl::no_value, QString> CreditsTopupOptions::request() {
+	return [=](auto consumer) {
+		auto lifetime = rpl::lifetime();
+
+		const auto giftBarePeerId = !_peer->isSelf() ? _peer->id.value : 0;
+
+		const auto optionsFromTL = [giftBarePeerId](const auto &options) {
+			return ranges::views::all(
+				options
+			) | ranges::views::transform([=](const auto &option) {
+				return Data::CreditTopupOption{
+					.credits = option.data().vstars().v,
+					.product = qs(
+						option.data().vstore_product().value_or_empty()),
+					.currency = qs(option.data().vcurrency()),
+					.amount = option.data().vamount().v,
+					.extended = option.data().is_extended(),
+					.giftBarePeerId = giftBarePeerId,
+				};
+			}) | ranges::to_vector;
+		};
+		const auto fail = [=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		};
+
+		if (_peer->isSelf()) {
+			using TLOption = MTPStarsTopupOption;
+			_api.request(MTPpayments_GetStarsTopupOptions(
+			)).done([=](const MTPVector<TLOption> &result) {
+				_options = optionsFromTL(result.v);
+				consumer.put_done();
+			}).fail(fail).send();
+		} else if (const auto user = _peer->asUser()) {
+			using TLOption = MTPStarsGiftOption;
+			_api.request(MTPpayments_GetStarsGiftOptions(
+				MTP_flags(MTPpayments_GetStarsGiftOptions::Flag::f_user_id),
+				user->inputUser()
+			)).done([=](const MTPVector<TLOption> &result) {
+				_options = optionsFromTL(result.v);
+				consumer.put_done();
+			}).fail(fail).send();
+		}
+
+		return lifetime;
+	};
+}
+
+Data::CreditTopupOptions CreditsTopupOptions::options() const {
+	return _options;
+}
+
+CreditsStatus::CreditsStatus(not_null<PeerData*> peer)
+: _peer(peer)
+, _api(&peer->session().api().instance()) {
+}
+
+void CreditsStatus::request(
+		const Data::CreditsStatusSlice::OffsetToken &token,
+		Fn<void(Data::CreditsStatusSlice)> done) {
+	if (_requestId) {
+		return;
+	}
+
+	using TLResult = MTPpayments_StarsStatus;
+
+	_requestId = _api.request(MTPpayments_GetStarsStatus(
+		MTP_flags(0),
+		_peer->isSelf() ? MTP_inputPeerSelf() : _peer->input()
+	)).done([=](const TLResult &result) {
+		_requestId = 0;
+		const auto &balance = result.data().vbalance();
+		_peer->session().credits().apply(
+			_peer->id,
+			CreditsAmountFromTL(balance));
+		if (const auto onstack = done) {
+			onstack(StatusFromTL(result, _peer));
+		}
+	}).fail([=] {
+		_requestId = 0;
+		if (const auto onstack = done) {
+			onstack({});
+		}
+	}).send();
+}
+
+CreditsHistory::CreditsHistory(
+	not_null<PeerData*> peer,
+	bool in,
+	bool out,
+	bool currency)
+: _peer(peer)
+, _flags(((in == out)
+	? HistoryTL::Flags(0)
+	: HistoryTL::Flags(0)
+		| (in ? HistoryTL::Flag::f_inbound : HistoryTL::Flags(0))
+		| (out ? HistoryTL::Flag::f_outbound : HistoryTL::Flags(0)))
+	| (currency ? HistoryTL::Flag::f_ton : HistoryTL::Flags(0)))
+, _api(&peer->session().api().instance()) {
+}
+
+void CreditsHistory::request(
+		const Data::CreditsStatusSlice::OffsetToken &token,
+		Fn<void(Data::CreditsStatusSlice)> done) {
+	if (_requestId) {
+		return;
+	}
+	_requestId = _api.request(MTPpayments_GetStarsTransactions(
+		MTP_flags(_flags),
+		MTPstring(), // subscription_id
+		_peer->isSelf() ? MTP_inputPeerSelf() : _peer->input(),
+		MTP_string(token),
+		MTP_int(kTransactionsLimit)
+	)).done([=](const MTPpayments_StarsStatus &result) {
+		_requestId = 0;
+		done(StatusFromTL(result, _peer));
+	}).fail([=] {
+		_requestId = 0;
+		done({});
+	}).send();
+}
+
+void CreditsHistory::requestSubscriptions(
+		const Data::CreditsStatusSlice::OffsetToken &token,
+		Fn<void(Data::CreditsStatusSlice)> done,
+		bool missingBalance) {
+	if (_requestId) {
+		return;
+	}
+	_requestId = _api.request(MTPpayments_GetStarsSubscriptions(
+		MTP_flags(missingBalance
+			? MTPpayments_getStarsSubscriptions::Flag::f_missing_balance
+			: MTPpayments_getStarsSubscriptions::Flags(0)),
+		_peer->isSelf() ? MTP_inputPeerSelf() : _peer->input(),
+		MTP_string(token)
+	)).done([=](const MTPpayments_StarsStatus &result) {
+		_requestId = 0;
+		done(StatusFromTL(result, _peer));
+	}).fail([=] {
+		_requestId = 0;
+		done({});
+	}).send();
+}
+
+rpl::producer<not_null<PeerData*>> PremiumPeerBot(
+		not_null<Main::Session*> session) {
+	const auto username = session->appConfig().get<QString>(
+		u"premium_bot_username"_q,
+		QString());
+	if (username.isEmpty()) {
+		return rpl::never<not_null<PeerData*>>();
+	}
+	if (const auto p = session->data().peerByUsername(username)) {
+		return rpl::single<not_null<PeerData*>>(p);
+	}
+	return [=](auto consumer) {
+		auto lifetime = rpl::lifetime();
+
+		const auto api = lifetime.make_state<MTP::Sender>(&session->mtp());
+
+		api->request(MTPcontacts_ResolveUsername(
+			MTP_flags(0),
+			MTP_string(username),
+			MTP_string()
+		)).done([=](const MTPcontacts_ResolvedPeer &result) {
+			session->data().processUsers(result.data().vusers());
+			session->data().processChats(result.data().vchats());
+			const auto botPeer = session->data().peerLoaded(
+				peerFromMTP(result.data().vpeer()));
+			if (!botPeer) {
+				return consumer.put_done();
+			}
+			consumer.put_next(not_null{ botPeer });
+		}).send();
+
+		return lifetime;
+	};
+}
+
+CreditsEarnStatistics::CreditsEarnStatistics(not_null<PeerData*> peer)
+: StatisticsRequestSender(peer)
+, _isUser(peer->isUser()) {
+}
+
+rpl::producer<rpl::no_value, QString> CreditsEarnStatistics::request() {
+	return [=](auto consumer) {
+		auto lifetime = rpl::lifetime();
+
+		const auto finish = [=](const QString &url) {
+			api().request(MTPpayments_GetStarsRevenueStats(
+				MTP_flags(0),
+				(_isUser ? user()->input() : channel()->input())
+			)).done([=](const MTPpayments_StarsRevenueStats &result) {
+				const auto &data = result.data();
+				const auto &status = data.vstatus().data();
+				_data = Data::CreditsEarnStatistics{
+					.revenueGraph = StatisticalGraphFromTL(
+						data.vrevenue_graph()),
+					.currentBalance = CreditsAmountFromTL(
+						status.vcurrent_balance()),
+					.availableBalance = CreditsAmountFromTL(
+						status.vavailable_balance()),
+					.overallRevenue = CreditsAmountFromTL(
+						status.voverall_revenue()),
+					.usdRate = data.vusd_rate().v,
+					.isWithdrawalEnabled = status.is_withdrawal_enabled(),
+					.nextWithdrawalAt = status.vnext_withdrawal_at()
+						? base::unixtime::parse(
+							status.vnext_withdrawal_at()->v)
+						: QDateTime(),
+					.buyAdsUrl = url,
+				};
+
+				consumer.put_done();
+			}).fail([=](const MTP::Error &error) {
+				consumer.put_error_copy(error.type());
+			}).send();
+		};
+
+		api().request(
+			MTPpayments_GetStarsRevenueAdsAccountUrl(
+				(_isUser ? user()->input() : channel()->input()))
+		).done([=](const MTPpayments_StarsRevenueAdsAccountUrl &result) {
+			finish(qs(result.data().vurl()));
+		}).fail([=](const MTP::Error &error) {
+			finish({});
+		}).send();
+
+		return lifetime;
+	};
+}
+
+Data::CreditsEarnStatistics CreditsEarnStatistics::data() const {
+	return _data;
+}
+
+CreditsGiveawayOptions::CreditsGiveawayOptions(not_null<PeerData*> peer)
+: _peer(peer)
+, _api(&peer->session().api().instance()) {
+}
+
+rpl::producer<rpl::no_value, QString> CreditsGiveawayOptions::request() {
+	return [=](auto consumer) {
+		auto lifetime = rpl::lifetime();
+
+		using TLOption = MTPStarsGiveawayOption;
+
+		const auto optionsFromTL = [=](const auto &options) {
+			return ranges::views::all(
+				options
+			) | ranges::views::transform([=](const auto &option) {
+				return Data::CreditsGiveawayOption{
+					.winners = ranges::views::all(
+						option.data().vwinners().v
+					) | ranges::views::transform([](const auto &winner) {
+						return Data::CreditsGiveawayOption::Winner{
+							.users = winner.data().vusers().v,
+							.perUserStars = winner.data().vper_user_stars().v,
+							.isDefault = winner.data().is_default(),
+						};
+					}) | ranges::to_vector,
+					.storeProduct = qs(
+						option.data().vstore_product().value_or_empty()),
+					.currency = qs(option.data().vcurrency()),
+					.amount = option.data().vamount().v,
+					.credits = option.data().vstars().v,
+					.yearlyBoosts = option.data().vyearly_boosts().v,
+					.isExtended = option.data().is_extended(),
+					.isDefault = option.data().is_default(),
+				};
+			}) | ranges::to_vector;
+		};
+		const auto fail = [=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		};
+
+		_api.request(MTPpayments_GetStarsGiveawayOptions(
+		)).done([=](const MTPVector<TLOption> &result) {
+			_options = optionsFromTL(result.v);
+			consumer.put_done();
+		}).fail(fail).send();
+
+		return lifetime;
+	};
+}
+
+Data::CreditsGiveawayOptions CreditsGiveawayOptions::options() const {
+	return _options;
+}
+
+void EditCreditsSubscription(
+		not_null<Main::Session*> session,
+		const QString &id,
+		bool cancel,
+		Fn<void()> done,
+		Fn<void(QString)> fail) {
+	using Flag = MTPpayments_ChangeStarsSubscription::Flag;
+	session->api().request(
+		MTPpayments_ChangeStarsSubscription(
+			MTP_flags(Flag::f_canceled),
+			MTP_inputPeerSelf(),
+			MTP_string(id),
+			MTP_bool(cancel)
+	)).done(done).fail([=](const MTP::Error &e) { fail(e.type()); }).send();
+}
+
+MTPInputSavedStarGift InputSavedStarGiftId(
+		const Data::SavedStarGiftId &id,
+		const std::shared_ptr<Data::UniqueGift> &unique) {
+	return (!id && unique)
+		? MTP_inputSavedStarGiftSlug(MTP_string(unique->slug))
+		: id.isUser()
+		? MTP_inputSavedStarGiftUser(MTP_int(id.userMessageId().bare))
+		: MTP_inputSavedStarGiftChat(
+			id.chat()->input(),
+			MTP_long(id.chatSavedId()));
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_credits.h

@@ -0,0 +1,132 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "api/api_statistics_sender.h"
+#include "data/data_credits.h"
+#include "data/data_credits_earn.h"
+#include "mtproto/sender.h"
+
+namespace Data {
+class SavedStarGiftId;
+} // namespace Data
+
+namespace Main {
+class Session;
+} // namespace Main
+
+class UserData;
+
+namespace Api {
+
+class CreditsTopupOptions final {
+public:
+	CreditsTopupOptions(not_null<PeerData*> peer);
+
+	[[nodiscard]] rpl::producer<rpl::no_value, QString> request();
+	[[nodiscard]] Data::CreditTopupOptions options() const;
+
+private:
+	const not_null<PeerData*> _peer;
+
+	Data::CreditTopupOptions _options;
+
+	MTP::Sender _api;
+
+};
+
+class CreditsGiveawayOptions final {
+public:
+	CreditsGiveawayOptions(not_null<PeerData*> peer);
+
+	[[nodiscard]] rpl::producer<rpl::no_value, QString> request();
+	[[nodiscard]] Data::CreditsGiveawayOptions options() const;
+
+private:
+	const not_null<PeerData*> _peer;
+
+	Data::CreditsGiveawayOptions _options;
+
+	MTP::Sender _api;
+
+};
+
+class CreditsStatus final {
+public:
+	CreditsStatus(not_null<PeerData*> peer);
+
+	void request(
+		const Data::CreditsStatusSlice::OffsetToken &token,
+		Fn<void(Data::CreditsStatusSlice)> done);
+
+private:
+	const not_null<PeerData*> _peer;
+
+	mtpRequestId _requestId = 0;
+
+	MTP::Sender _api;
+
+};
+
+class CreditsHistory final {
+public:
+	CreditsHistory(
+		not_null<PeerData*> peer,
+		bool in,
+		bool out,
+		bool currency = false);
+
+	void request(
+		const Data::CreditsStatusSlice::OffsetToken &token,
+		Fn<void(Data::CreditsStatusSlice)> done);
+	void requestSubscriptions(
+		const Data::CreditsStatusSlice::OffsetToken &token,
+		Fn<void(Data::CreditsStatusSlice)> done,
+		bool missingBalance = false);
+
+private:
+	using HistoryTL = MTPpayments_GetStarsTransactions;
+	const not_null<PeerData*> _peer;
+	const HistoryTL::Flags _flags;
+
+	mtpRequestId _requestId = 0;
+
+	MTP::Sender _api;
+
+};
+
+class CreditsEarnStatistics final : public StatisticsRequestSender {
+public:
+	explicit CreditsEarnStatistics(not_null<PeerData*>);
+
+	[[nodiscard]] rpl::producer<rpl::no_value, QString> request();
+	[[nodiscard]] Data::CreditsEarnStatistics data() const;
+
+private:
+	const bool _isUser = false;
+	Data::CreditsEarnStatistics _data;
+
+	mtpRequestId _requestId = 0;
+
+};
+
+[[nodiscard]] rpl::producer<not_null<PeerData*>> PremiumPeerBot(
+	not_null<Main::Session*> session);
+
+void EditCreditsSubscription(
+	not_null<Main::Session*> session,
+	const QString &id,
+	bool cancel,
+	Fn<void()> done,
+	Fn<void(QString)> fail);
+
+[[nodiscard]] MTPInputSavedStarGift InputSavedStarGiftId(
+	const Data::SavedStarGiftId &id,
+	const std::shared_ptr<Data::UniqueGift> &unique = nullptr);
+
+} // namespace Api

Telegram/SourceFiles/api/api_credits_history_entry.cpp

@@ -0,0 +1,170 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_credits_history_entry.h"
+
+#include "api/api_premium.h"
+#include "base/unixtime.h"
+#include "data/data_channel.h"
+#include "data/data_credits.h"
+#include "data/data_document.h"
+#include "data/data_peer.h"
+#include "data/data_photo.h"
+#include "data/data_session.h"
+#include "data/data_user.h"
+#include "main/main_session.h"
+
+namespace Api {
+
+Data::CreditsHistoryEntry CreditsHistoryEntryFromTL(
+		const MTPStarsTransaction &tl,
+		not_null<PeerData*> peer) {
+	using HistoryPeerTL = MTPDstarsTransactionPeer;
+	using namespace Data;
+	const auto owner = &peer->owner();
+	const auto photo = tl.data().vphoto()
+		? owner->photoFromWeb(*tl.data().vphoto(), ImageLocation())
+		: nullptr;
+	auto extended = std::vector<CreditsHistoryMedia>();
+	if (const auto list = tl.data().vextended_media()) {
+		extended.reserve(list->v.size());
+		for (const auto &media : list->v) {
+			media.match([&](const MTPDmessageMediaPhoto &data) {
+				if (const auto inner = data.vphoto()) {
+					const auto photo = owner->processPhoto(*inner);
+					if (!photo->isNull()) {
+						extended.push_back(CreditsHistoryMedia{
+							.type = CreditsHistoryMediaType::Photo,
+							.id = photo->id,
+						});
+					}
+				}
+			}, [&](const MTPDmessageMediaDocument &data) {
+				if (const auto inner = data.vdocument()) {
+					const auto document = owner->processDocument(
+						*inner,
+						data.valt_documents());
+					if (document->isAnimation()
+						|| document->isVideoFile()
+						|| document->isGifv()) {
+						extended.push_back(CreditsHistoryMedia{
+							.type = CreditsHistoryMediaType::Video,
+							.id = document->id,
+						});
+					}
+				}
+			}, [&](const auto &) {});
+		}
+	}
+	const auto barePeerId = tl.data().vpeer().match([](
+			const HistoryPeerTL &p) {
+		return peerFromMTP(p.vpeer());
+	}, [](const auto &) {
+		return PeerId(0);
+	}).value;
+	const auto stargift = tl.data().vstargift();
+	const auto nonUniqueGift = stargift
+		? stargift->match([&](const MTPDstarGift &data) {
+			return &data;
+		}, [](const auto &) { return (const MTPDstarGift*)nullptr; })
+		: nullptr;
+	const auto reaction = tl.data().is_reaction();
+	const auto amount = CreditsAmountFromTL(tl.data().vamount());
+	const auto starrefAmount = CreditsAmountFromTL(
+		tl.data().vstarref_amount());
+	const auto starrefCommission
+		= tl.data().vstarref_commission_permille().value_or_empty();
+	const auto starrefBarePeerId = tl.data().vstarref_peer()
+		? peerFromMTP(*tl.data().vstarref_peer()).value
+		: 0;
+	const auto incoming = (amount >= CreditsAmount());
+	const auto paidMessagesCount
+		= tl.data().vpaid_messages().value_or_empty();
+	const auto premiumMonthsForStars
+		= tl.data().vpremium_gift_months().value_or_empty();
+	const auto saveActorId = (reaction
+		|| !extended.empty()
+		|| paidMessagesCount) && incoming;
+	const auto parsedGift = stargift
+		? FromTL(&peer->session(), *stargift)
+		: std::optional<Data::StarGift>();
+	const auto giftStickerId = parsedGift ? parsedGift->document->id : 0;
+	return Data::CreditsHistoryEntry{
+		.id = qs(tl.data().vid()),
+		.title = qs(tl.data().vtitle().value_or_empty()),
+		.description = { qs(tl.data().vdescription().value_or_empty()) },
+		.date = base::unixtime::parse(
+			tl.data().vads_proceeds_from_date().value_or(
+				tl.data().vdate().v)),
+		.photoId = photo ? photo->id : 0,
+		.extended = std::move(extended),
+		.credits = CreditsAmountFromTL(tl.data().vamount()),
+		.bareMsgId = uint64(tl.data().vmsg_id().value_or_empty()),
+		.barePeerId = saveActorId ? peer->id.value : barePeerId,
+		.bareGiveawayMsgId = uint64(
+			tl.data().vgiveaway_post_id().value_or_empty()),
+		.bareGiftStickerId = giftStickerId,
+		.bareActorId = saveActorId ? barePeerId : uint64(0),
+		.uniqueGift = parsedGift ? parsedGift->unique : nullptr,
+		.starrefAmount = paidMessagesCount ? CreditsAmount() : starrefAmount,
+		.starrefCommission = paidMessagesCount ? 0 : starrefCommission,
+		.starrefRecipientId = paidMessagesCount ? 0 : starrefBarePeerId,
+		.peerType = tl.data().vpeer().match([](const HistoryPeerTL &) {
+			return Data::CreditsHistoryEntry::PeerType::Peer;
+		}, [](const MTPDstarsTransactionPeerPlayMarket &) {
+			return Data::CreditsHistoryEntry::PeerType::PlayMarket;
+		}, [](const MTPDstarsTransactionPeerFragment &) {
+			return Data::CreditsHistoryEntry::PeerType::Fragment;
+		}, [](const MTPDstarsTransactionPeerAppStore &) {
+			return Data::CreditsHistoryEntry::PeerType::AppStore;
+		}, [](const MTPDstarsTransactionPeerUnsupported &) {
+			return Data::CreditsHistoryEntry::PeerType::Unsupported;
+		}, [](const MTPDstarsTransactionPeerPremiumBot &) {
+			return Data::CreditsHistoryEntry::PeerType::PremiumBot;
+		}, [](const MTPDstarsTransactionPeerAds &) {
+			return Data::CreditsHistoryEntry::PeerType::Ads;
+		}, [](const MTPDstarsTransactionPeerAPI &) {
+			return Data::CreditsHistoryEntry::PeerType::API;
+		}),
+		.subscriptionUntil = tl.data().vsubscription_period()
+			? base::unixtime::parse(base::unixtime::now()
+				+ tl.data().vsubscription_period()->v)
+			: QDateTime(),
+		.adsProceedsToDate = tl.data().vads_proceeds_to_date()
+			? base::unixtime::parse(tl.data().vads_proceeds_to_date()->v)
+			: QDateTime(),
+		.successDate = tl.data().vtransaction_date()
+			? base::unixtime::parse(tl.data().vtransaction_date()->v)
+			: QDateTime(),
+		.successLink = qs(tl.data().vtransaction_url().value_or_empty()),
+		.paidMessagesCount = paidMessagesCount,
+		.paidMessagesAmount = (paidMessagesCount
+			? starrefAmount
+			: CreditsAmount()),
+		.paidMessagesCommission = paidMessagesCount ? starrefCommission : 0,
+		.limitedCount = parsedGift ? parsedGift->limitedCount : 0,
+		.limitedLeft = parsedGift ? parsedGift->limitedLeft : 0,
+		.starsConverted = int(nonUniqueGift
+			? nonUniqueGift->vconvert_stars().v
+			: 0),
+		.premiumMonthsForStars = premiumMonthsForStars,
+		.floodSkip = int(tl.data().vfloodskip_number().value_or(0)),
+		.converted = stargift && incoming,
+		.stargift = stargift.has_value(),
+		.postsSearch = tl.data().is_posts_search(),
+		.giftUpgraded = tl.data().is_stargift_upgrade(),
+		.giftResale = tl.data().is_stargift_resale(),
+		.reaction = tl.data().is_reaction(),
+		.refunded = tl.data().is_refund(),
+		.pending = tl.data().is_pending(),
+		.failed = tl.data().is_failed(),
+		.in = incoming,
+		.gift = tl.data().is_gift() || stargift.has_value(),
+	};
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_credits_history_entry.h

@@ -0,0 +1,22 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+class PeerData;
+
+namespace Data {
+struct CreditsHistoryEntry;
+} // namespace Data
+
+namespace Api {
+
+[[nodiscard]] Data::CreditsHistoryEntry CreditsHistoryEntryFromTL(
+	const MTPStarsTransaction &tl,
+	not_null<PeerData*> peer);
+
+} // namespace Api

Telegram/SourceFiles/api/api_earn.cpp

@@ -0,0 +1,159 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_earn.h"
+
+#include "api/api_cloud_password.h"
+#include "apiwrap.h"
+#include "ui/layers/generic_box.h"
+#include "boxes/passcode_box.h"
+#include "data/data_channel.h"
+#include "data/data_session.h"
+#include "lang/lang_keys.h"
+#include "main/main_session.h"
+#include "ui/basic_click_handlers.h"
+#include "ui/widgets/buttons.h"
+
+namespace Api {
+
+void RestrictSponsored(
+		not_null<ChannelData*> channel,
+		bool restricted,
+		Fn<void(QString)> failed) {
+	channel->session().api().request(MTPchannels_RestrictSponsoredMessages(
+		channel->inputChannel(),
+		MTP_bool(restricted))
+	).done([=](const MTPUpdates &updates) {
+		channel->session().api().applyUpdates(updates);
+	}).fail([=](const MTP::Error &error) {
+		failed(error.type());
+	}).send();
+}
+
+void HandleWithdrawalButton(
+		RewardReceiver receiver,
+		not_null<Ui::RippleButton*> button,
+		std::shared_ptr<Ui::Show> show) {
+	Expects(receiver.currencyReceiver
+		|| (receiver.creditsReceiver && receiver.creditsAmount));
+
+	struct State {
+		rpl::lifetime lifetime;
+		bool loading = false;
+	};
+
+	const auto currencyReceiver = receiver.currencyReceiver;
+	const auto creditsReceiver = receiver.creditsReceiver;
+	const auto isChannel = receiver.currencyReceiver
+		&& receiver.currencyReceiver->isChannel();
+
+	const auto state = button->lifetime().make_state<State>();
+	const auto session = (currencyReceiver
+		? &currencyReceiver->session()
+		: &creditsReceiver->session());
+
+	using CreditsOutUrl = MTPpayments_StarsRevenueWithdrawalUrl;
+
+	session->api().cloudPassword().reload();
+	const auto processOut = [=] {
+		if (state->loading) {
+			return;
+		} else if (creditsReceiver && !receiver.creditsAmount()) {
+			return;
+		}
+		state->loading = true;
+		state->lifetime = session->api().cloudPassword().state(
+		) | rpl::take(
+			1
+		) | rpl::on_next([=](const Core::CloudPasswordState &pass) {
+			state->loading = false;
+
+			auto fields = PasscodeBox::CloudFields::From(pass);
+			fields.customTitle = isChannel
+				? tr::lng_channel_earn_balance_password_title()
+				: tr::lng_bot_earn_balance_password_title();
+			fields.customDescription = isChannel
+				? tr::lng_channel_earn_balance_password_description(tr::now)
+				: tr::lng_bot_earn_balance_password_description(tr::now);
+			fields.customSubmitButton = tr::lng_passcode_submit();
+			fields.customCheckCallback = crl::guard(button, [=](
+					const Core::CloudPasswordResult &result,
+					base::weak_qptr<PasscodeBox> box) {
+				const auto done = [=](const QString &result) {
+					if (!result.isEmpty()) {
+						UrlClickHandler::Open(result);
+						if (box) {
+							box->closeBox();
+						}
+					}
+				};
+				const auto fail = [=](const MTP::Error &error) {
+					const auto message = error.type();
+					if (box && !box->handleCustomCheckError(message)) {
+						show->showToast(message);
+					}
+				};
+				if (currencyReceiver || creditsReceiver) {
+					using F = MTPpayments_getStarsRevenueWithdrawalUrl::Flag;
+					session->api().request(
+						MTPpayments_GetStarsRevenueWithdrawalUrl(
+							MTP_flags(currencyReceiver
+								? F::f_ton
+								: F::f_amount),
+							currencyReceiver
+								? currencyReceiver->input()
+								: creditsReceiver->input(),
+							MTP_long(creditsReceiver
+								? receiver.creditsAmount()
+								: 0),
+							result.result
+					)).done([=](const CreditsOutUrl &r) {
+						done(qs(r.data().vurl()));
+					}).fail(fail).send();
+				}
+			});
+			show->show(Box<PasscodeBox>(session, fields));
+		});
+	};
+	button->setClickedCallback([=] {
+		if (state->loading) {
+			return;
+		}
+		const auto fail = [=](const MTP::Error &error) {
+			auto box = PrePasswordErrorBox(
+				error.type(),
+				session,
+				TextWithEntities{
+					tr::lng_channel_earn_out_check_password_about(tr::now),
+				});
+			if (box) {
+				show->show(std::move(box));
+				state->loading = false;
+			} else {
+				processOut();
+			}
+		};
+		if (currencyReceiver || creditsReceiver) {
+			using F = MTPpayments_getStarsRevenueWithdrawalUrl::Flag;
+			session->api().request(
+				MTPpayments_GetStarsRevenueWithdrawalUrl(
+					MTP_flags(currencyReceiver
+						? F::f_ton
+						: F::f_amount),
+					currencyReceiver
+						? currencyReceiver->input()
+						: creditsReceiver->input(),
+					MTP_long(creditsReceiver
+						? receiver.creditsAmount()
+						: 0),
+					MTP_inputCheckPasswordEmpty()
+			)).fail(fail).send();
+		}
+	});
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_earn.h

@@ -0,0 +1,35 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+class ChannelData;
+
+namespace Ui {
+class RippleButton;
+class Show;
+} // namespace Ui
+
+namespace Api {
+
+void RestrictSponsored(
+	not_null<ChannelData*> channel,
+	bool restricted,
+	Fn<void(QString)> failed);
+
+struct RewardReceiver final {
+	PeerData *currencyReceiver = nullptr;
+	PeerData *creditsReceiver = nullptr;
+	Fn<uint64()> creditsAmount;
+};
+
+void HandleWithdrawalButton(
+	RewardReceiver receiver,
+	not_null<Ui::RippleButton*> button,
+	std::shared_ptr<Ui::Show> show);
+
+} // namespace Api

Telegram/SourceFiles/api/api_editing.cpp

@@ -0,0 +1,587 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_editing.h"
+
+#include "apiwrap.h"
+#include "api/api_media.h"
+#include "api/api_text_entities.h"
+#include "base/random.h"
+#include "ui/boxes/confirm_box.h"
+#include "data/business/data_shortcut_messages.h"
+#include "data/components/scheduled_messages.h"
+#include "data/data_file_origin.h"
+#include "data/data_histories.h"
+#include "data/data_saved_sublist.h"
+#include "data/data_session.h"
+#include "data/data_todo_list.h"
+#include "data/data_web_page.h"
+#include "history/view/controls/history_view_compose_media_edit_manager.h"
+#include "history/history.h"
+#include "history/history_item_components.h"
+#include "lang/lang_keys.h"
+#include "main/main_session.h"
+#include "mtproto/mtproto_response.h"
+#include "boxes/abstract_box.h" // Ui::show().
+
+namespace Api {
+namespace {
+
+using namespace rpl::details;
+
+template <typename T>
+constexpr auto WithId
+	= is_callable_plain_v<T, Fn<void()>, mtpRequestId>;
+template <typename T>
+constexpr auto WithoutId
+	= is_callable_plain_v<T, Fn<void()>>;
+template <typename T>
+constexpr auto WithoutCallback
+	= is_callable_plain_v<T>;
+template <typename T>
+constexpr auto ErrorWithId
+	= is_callable_plain_v<T, QString, mtpRequestId>;
+template <typename T>
+constexpr auto ErrorWithoutId
+	= is_callable_plain_v<T, QString>;
+
+template <typename DoneCallback, typename FailCallback>
+mtpRequestId SuggestMessage(
+		not_null<HistoryItem*> item,
+		const TextWithEntities &textWithEntities,
+		Data::WebPageDraft webpage,
+		SendOptions options,
+		DoneCallback &&done,
+		FailCallback &&fail) {
+	Expects(options.suggest.exists);
+	Expects(!options.scheduled);
+
+	const auto session = &item->history()->session();
+	const auto api = &session->api();
+
+	const auto thread = item->history()->amMonoforumAdmin()
+		? item->savedSublist()
+		: (Data::Thread*)item->history();
+	auto action = SendAction(thread, options);
+	action.replyTo = FullReplyTo{
+		.messageId = item->fullId(),
+		.monoforumPeerId = (item->history()->amMonoforumAdmin()
+			? item->sublistPeerId()
+			: PeerId()),
+	};
+
+	auto message = MessageToSend(std::move(action));
+	message.textWithTags = TextWithTags{
+		textWithEntities.text,
+		TextUtilities::ConvertEntitiesToTextTags(textWithEntities.entities)
+	};
+	message.webPage = webpage;
+	api->sendMessage(std::move(message));
+
+	const auto requestId = -1;
+	crl::on_main(session, [=] {
+		const auto type = u"MESSAGE_NOT_MODIFIED"_q;
+		if constexpr (ErrorWithId<FailCallback>) {
+			fail(type, requestId);
+		} else if constexpr (ErrorWithoutId<FailCallback>) {
+			fail(type);
+		} else if constexpr (WithoutCallback<FailCallback>) {
+			fail();
+		} else {
+			t_bad_callback(fail);
+		}
+	});
+	return requestId;
+}
+
+template <typename DoneCallback, typename FailCallback>
+mtpRequestId SuggestMedia(
+		not_null<HistoryItem*> item,
+		const TextWithEntities &textWithEntities,
+		Data::WebPageDraft webpage,
+		SendOptions options,
+		DoneCallback &&done,
+		FailCallback &&fail,
+		std::optional<MTPInputMedia> inputMedia) {
+	Expects(options.suggest.exists);
+	Expects(!options.scheduled);
+
+	const auto session = &item->history()->session();
+	const auto api = &session->api();
+
+	const auto text = textWithEntities.text;
+	const auto sentEntities = EntitiesToMTP(
+		session,
+		textWithEntities.entities,
+		ConvertOption::SkipLocal);
+
+	const auto updateRecentStickers = inputMedia
+		? Api::HasAttachedStickers(*inputMedia)
+		: false;
+
+	const auto emptyFlag = MTPmessages_SendMedia::Flag(0);
+	auto replyTo = FullReplyTo{
+		.messageId = item->fullId(),
+		.monoforumPeerId = (item->history()->amMonoforumAdmin()
+			? item->sublistPeerId()
+			: PeerId()),
+	};
+	const auto flags = emptyFlag
+		| MTPmessages_SendMedia::Flag::f_reply_to
+		| MTPmessages_SendMedia::Flag::f_suggested_post
+		| (((!webpage.removed && !webpage.url.isEmpty() && webpage.invert)
+			|| options.invertCaption)
+			? MTPmessages_SendMedia::Flag::f_invert_media
+			: emptyFlag)
+		| (!sentEntities.v.isEmpty()
+			? MTPmessages_SendMedia::Flag::f_entities
+			: emptyFlag)
+		| (options.starsApproved
+			? MTPmessages_SendMedia::Flag::f_allow_paid_stars
+			: emptyFlag);
+	const auto randomId = base::RandomValue<uint64>();
+	return api->request(MTPmessages_SendMedia(
+		MTP_flags(flags),
+		item->history()->peer->input(),
+		ReplyToForMTP(item->history(), replyTo),
+		inputMedia.value_or(Data::WebPageForMTP(webpage, text.isEmpty())),
+		MTP_string(text),
+		MTP_long(randomId),
+		MTPReplyMarkup(),
+		sentEntities,
+		MTPint(), // schedule_date
+		MTPint(), // schedule_repeat_period
+		MTPInputPeer(), // send_as
+		MTPInputQuickReplyShortcut(), // quick_reply_shortcut
+		MTPlong(), // effect
+		MTP_long(options.starsApproved),
+		Api::SuggestToMTP(options.suggest)
+	)).done([=](
+			const MTPUpdates &result,
+			[[maybe_unused]] mtpRequestId requestId) {
+		const auto apply = [=] { api->applyUpdates(result); };
+
+		if constexpr (WithId<DoneCallback>) {
+			done(apply, requestId);
+		} else if constexpr (WithoutId<DoneCallback>) {
+			done(apply);
+		} else if constexpr (WithoutCallback<DoneCallback>) {
+			done();
+			apply();
+		} else {
+			t_bad_callback(done);
+		}
+
+		if (updateRecentStickers) {
+			api->requestSpecialStickersForce(false, false, true);
+		}
+	}).fail([=](const MTP::Error &error, mtpRequestId requestId) {
+		if constexpr (ErrorWithId<FailCallback>) {
+			fail(error.type(), requestId);
+		} else if constexpr (ErrorWithoutId<FailCallback>) {
+			fail(error.type());
+		} else if constexpr (WithoutCallback<FailCallback>) {
+			fail();
+		} else {
+			t_bad_callback(fail);
+		}
+	}).send();
+}
+
+template <typename DoneCallback, typename FailCallback>
+mtpRequestId SuggestMessageOrMedia(
+		not_null<HistoryItem*> item,
+		const TextWithEntities &textWithEntities,
+		Data::WebPageDraft webpage,
+		SendOptions options,
+		DoneCallback &&done,
+		FailCallback &&fail,
+		std::optional<MTPInputMedia> inputMedia) {
+	const auto wasMedia = item->media();
+	if (!inputMedia && wasMedia && wasMedia->allowsEditCaption()) {
+		if (const auto photo = wasMedia->photo()) {
+			inputMedia = MTP_inputMediaPhoto(
+				MTP_flags(0),
+				photo->mtpInput(),
+				MTPint()); // ttl_seconds
+		} else if (const auto document = wasMedia->document()) {
+			inputMedia = MTP_inputMediaDocument(
+				MTP_flags(0),
+				document->mtpInput(),
+				MTPInputPhoto(), // video_cover
+				MTPint(), // video_timestamp
+				MTPint(), // ttl_seconds
+				MTPstring()); // query
+		}
+	}
+	if (inputMedia) {
+		return SuggestMedia(
+			item,
+			textWithEntities,
+			webpage,
+			options,
+			std::move(done),
+			std::move(fail),
+			inputMedia);
+	}
+	return SuggestMessage(
+		item,
+		textWithEntities,
+		webpage,
+		options,
+		std::move(done),
+		std::move(fail));
+}
+
+template <typename DoneCallback, typename FailCallback>
+mtpRequestId EditMessage(
+		not_null<HistoryItem*> item,
+		const TextWithEntities &textWithEntities,
+		Data::WebPageDraft webpage,
+		SendOptions options,
+		DoneCallback &&done,
+		FailCallback &&fail,
+		std::optional<MTPInputMedia> inputMedia = std::nullopt) {
+	if (item->computeSuggestionActions()
+		== SuggestionActions::AcceptAndDecline) {
+		return SuggestMessageOrMedia(
+			item,
+			textWithEntities,
+			webpage,
+			options,
+			std::move(done),
+			std::move(fail),
+			inputMedia);
+	}
+
+	const auto session = &item->history()->session();
+	const auto api = &session->api();
+
+	const auto text = textWithEntities.text;
+	const auto sentEntities = EntitiesToMTP(
+		session,
+		textWithEntities.entities,
+		ConvertOption::SkipLocal);
+	const auto media = item->media();
+
+	const auto updateRecentStickers = inputMedia.has_value()
+		? Api::HasAttachedStickers(*inputMedia)
+		: false;
+
+	const auto emptyFlag = MTPmessages_EditMessage::Flag(0);
+	const auto flags = emptyFlag
+		| ((!text.isEmpty() || media)
+			? MTPmessages_EditMessage::Flag::f_message
+			: emptyFlag)
+		| ((media && inputMedia.has_value())
+			? MTPmessages_EditMessage::Flag::f_media
+			: emptyFlag)
+		| (webpage.removed
+			? MTPmessages_EditMessage::Flag::f_no_webpage
+			: emptyFlag)
+		| ((!webpage.removed && !webpage.url.isEmpty())
+			? MTPmessages_EditMessage::Flag::f_media
+			: emptyFlag)
+		| (((!webpage.removed && !webpage.url.isEmpty() && webpage.invert)
+			|| options.invertCaption)
+			? MTPmessages_EditMessage::Flag::f_invert_media
+			: emptyFlag)
+		| (!sentEntities.v.isEmpty()
+			? MTPmessages_EditMessage::Flag::f_entities
+			: emptyFlag)
+		| (options.scheduled
+			? MTPmessages_EditMessage::Flag::f_schedule_date
+			: emptyFlag)
+		| ((options.scheduled && options.scheduleRepeatPeriod)
+			? MTPmessages_EditMessage::Flag::f_schedule_repeat_period
+			: emptyFlag)
+		| (item->isBusinessShortcut()
+			? MTPmessages_EditMessage::Flag::f_quick_reply_shortcut_id
+			: emptyFlag);
+
+	const auto id = item->isScheduled()
+		? session->scheduledMessages().lookupId(item)
+		: item->isBusinessShortcut()
+		? session->data().shortcutMessages().lookupId(item)
+		: item->id;
+	return api->request(MTPmessages_EditMessage(
+		MTP_flags(flags),
+		item->history()->peer->input(),
+		MTP_int(id),
+		MTP_string(text),
+		inputMedia.value_or(Data::WebPageForMTP(webpage, text.isEmpty())),
+		MTPReplyMarkup(),
+		sentEntities,
+		MTP_int(options.scheduled),
+		MTP_int(options.scheduleRepeatPeriod),
+		MTP_int(item->shortcutId())
+	)).done([=](
+			const MTPUpdates &result,
+			[[maybe_unused]] mtpRequestId requestId) {
+		const auto apply = [=] { api->applyUpdates(result); };
+
+		if constexpr (WithId<DoneCallback>) {
+			done(apply, requestId);
+		} else if constexpr (WithoutId<DoneCallback>) {
+			done(apply);
+		} else if constexpr (WithoutCallback<DoneCallback>) {
+			done();
+			apply();
+		} else {
+			t_bad_callback(done);
+		}
+
+		if (updateRecentStickers) {
+			api->requestSpecialStickersForce(false, false, true);
+		}
+	}).fail([=](const MTP::Error &error, mtpRequestId requestId) {
+		if constexpr (ErrorWithId<FailCallback>) {
+			fail(error.type(), requestId);
+		} else if constexpr (ErrorWithoutId<FailCallback>) {
+			fail(error.type());
+		} else if constexpr (WithoutCallback<FailCallback>) {
+			fail();
+		} else {
+			t_bad_callback(fail);
+		}
+	}).send();
+}
+
+template <typename DoneCallback, typename FailCallback>
+mtpRequestId EditMessage(
+		not_null<HistoryItem*> item,
+		SendOptions options,
+		DoneCallback &&done,
+		FailCallback &&fail,
+		std::optional<MTPInputMedia> inputMedia = std::nullopt) {
+	const auto &text = item->originalText();
+	const auto webpage = (!item->media() || !item->media()->webpage())
+		? Data::WebPageDraft{ .removed = true }
+		: Data::WebPageDraft::FromItem(item);
+	return EditMessage(
+		item,
+		text,
+		webpage,
+		options,
+		std::forward<DoneCallback>(done),
+		std::forward<FailCallback>(fail),
+		inputMedia);
+}
+
+void EditMessageWithUploadedMedia(
+		not_null<HistoryItem*> item,
+		SendOptions options,
+		MTPInputMedia media) {
+	const auto done = [=](Fn<void()> applyUpdates) {
+		if (item) {
+			item->removeFromSharedMediaIndex();
+			item->clearSavedMedia();
+			item->setIsLocalUpdateMedia(true);
+			applyUpdates();
+			item->setIsLocalUpdateMedia(false);
+		}
+	};
+	const auto fail = [=](const QString &error) {
+		const auto session = &item->history()->session();
+		const auto notModified = (error == u"MESSAGE_NOT_MODIFIED"_q);
+		const auto mediaInvalid = (error == u"MEDIA_NEW_INVALID"_q);
+		if (notModified || mediaInvalid) {
+			item->returnSavedMedia();
+			session->data().sendHistoryChangeNotifications();
+			if (mediaInvalid) {
+				Ui::show(
+					Ui::MakeInformBox(tr::lng_edit_media_invalid_file()),
+					Ui::LayerOption::KeepOther);
+			}
+		} else {
+			session->api().sendMessageFail(error, item->history()->peer);
+		}
+	};
+
+	EditMessage(item, options, done, fail, media);
+}
+
+} // namespace
+
+void RescheduleMessage(
+		not_null<HistoryItem*> item,
+		SendOptions options) {
+	const auto empty = [] {};
+	options.invertCaption = item->invertMedia();
+	EditMessage(item, options, empty, empty);
+}
+
+void EditMessageWithUploadedDocument(
+		HistoryItem *item,
+		RemoteFileInfo info,
+		SendOptions options) {
+	if (!item || !item->media() || !item->media()->document()) {
+		return;
+	}
+	EditMessageWithUploadedMedia(
+		item,
+		options,
+		PrepareUploadedDocument(item, std::move(info)));
+}
+
+void EditMessageWithUploadedPhoto(
+		HistoryItem *item,
+		RemoteFileInfo info,
+		SendOptions options) {
+	if (!item || !item->media() || !item->media()->photo()) {
+		return;
+	}
+	EditMessageWithUploadedMedia(
+		item,
+		options,
+		PrepareUploadedPhoto(item, std::move(info)));
+}
+
+mtpRequestId EditCaption(
+		not_null<HistoryItem*> item,
+		const TextWithEntities &caption,
+		SendOptions options,
+		Fn<void()> done,
+		Fn<void(const QString &)> fail) {
+	return EditMessage(
+		item,
+		caption,
+		Data::WebPageDraft(),
+		options,
+		done,
+		fail);
+}
+
+mtpRequestId EditTextMessage(
+		not_null<HistoryItem*> item,
+		const TextWithEntities &caption,
+		Data::WebPageDraft webpage,
+		SendOptions options,
+		Fn<void(mtpRequestId requestId)> done,
+		Fn<void(const QString &error, mtpRequestId requestId)> fail,
+		bool spoilered) {
+	const auto media = item->media();
+	if (media
+		&& HistoryView::MediaEditManager::CanBeSpoilered(item)
+		&& spoilered != media->hasSpoiler()) {
+		auto takeInputMedia = Fn<std::optional<MTPInputMedia>()>(nullptr);
+		auto takeFileReference = Fn<QByteArray()>(nullptr);
+		if (const auto photo = media->photo()) {
+			using Flag = MTPDinputMediaPhoto::Flag;
+			const auto flags = Flag()
+				| (media->ttlSeconds() ? Flag::f_ttl_seconds : Flag())
+				| (spoilered ? Flag::f_spoiler : Flag());
+			takeInputMedia = [=] {
+				return MTP_inputMediaPhoto(
+					MTP_flags(flags),
+					photo->mtpInput(),
+					MTP_int(media->ttlSeconds()));
+			};
+			takeFileReference = [=] { return photo->fileReference(); };
+		} else if (const auto document = media->document()) {
+			using Flag = MTPDinputMediaDocument::Flag;
+			const auto videoCover = media->videoCover();
+			const auto videoTimestamp = media->videoTimestamp();
+			const auto flags = Flag()
+				| (media->ttlSeconds() ? Flag::f_ttl_seconds : Flag())
+				| (spoilered ? Flag::f_spoiler : Flag())
+				| (videoTimestamp ? Flag::f_video_timestamp : Flag())
+				| (videoCover ? Flag::f_video_cover : Flag());
+			takeInputMedia = [=] {
+				return MTP_inputMediaDocument(
+					MTP_flags(flags),
+					document->mtpInput(),
+					(videoCover
+						? videoCover->mtpInput()
+						: MTPInputPhoto()),
+					MTP_int(media->ttlSeconds()),
+					MTP_int(videoTimestamp),
+					MTPstring()); // query
+			};
+			takeFileReference = [=] { return document->fileReference(); };
+		}
+
+		const auto usedFileReference = takeFileReference
+			? takeFileReference()
+			: QByteArray();
+		const auto origin = item->fullId();
+		const auto api = &item->history()->session().api();
+		const auto performRequest = [=](
+				const auto &repeatRequest,
+				mtpRequestId originalRequestId) -> mtpRequestId {
+			const auto handleReference = [=](
+					const QString &error,
+					mtpRequestId requestId) {
+				if (error.startsWith(u"FILE_REFERENCE_"_q)) {
+					api->refreshFileReference(origin, [=](const auto &) {
+						if (takeFileReference &&
+							(takeFileReference() != usedFileReference)) {
+							repeatRequest(
+								repeatRequest,
+								originalRequestId
+									? originalRequestId
+									: requestId);
+						} else {
+							fail(error, requestId);
+						}
+					});
+				} else {
+					fail(error, requestId);
+				}
+			};
+			const auto callback = [=](
+					Fn<void()> applyUpdates,
+					mtpRequestId requestId) {
+				applyUpdates();
+				done(originalRequestId ? originalRequestId : requestId);
+			};
+			const auto requestId = EditMessage(
+				item,
+				caption,
+				webpage,
+				options,
+				callback,
+				handleReference,
+				takeInputMedia ? takeInputMedia() : std::nullopt);
+			return originalRequestId ? originalRequestId : requestId;
+		};
+		return performRequest(performRequest, 0);
+	}
+
+	const auto callback = [=](Fn<void()> applyUpdates, mtpRequestId id) {
+		applyUpdates();
+		done(id);
+	};
+	return EditMessage(
+		item,
+		caption,
+		webpage,
+		options,
+		callback,
+		fail,
+		std::nullopt);
+}
+
+void EditTodoList(
+		not_null<HistoryItem*> item,
+		const TodoListData &data,
+		SendOptions options,
+		Fn<void(mtpRequestId requestId)> done,
+		Fn<void(const QString &error, mtpRequestId requestId)> fail) {
+	const auto callback = [=](Fn<void()> applyUpdates, mtpRequestId id) {
+		applyUpdates();
+		done(id);
+	};
+	EditMessage(
+		item,
+		options,
+		callback,
+		fail,
+		MTP_inputMediaTodo(TodoListDataToMTP(&data)));
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_editing.h

@@ -0,0 +1,68 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+class HistoryItem;
+
+namespace Data {
+struct WebPageDraft;
+} // namespace Data
+
+namespace MTP {
+class Error;
+} // namespace MTP
+
+namespace Api {
+
+struct SendOptions;
+struct RemoteFileInfo;
+
+const auto kDefaultEditMessagesErrors = {
+	u"MESSAGE_ID_INVALID"_q,
+	u"CHAT_ADMIN_REQUIRED"_q,
+	u"MESSAGE_EDIT_TIME_EXPIRED"_q,
+};
+
+void RescheduleMessage(
+	not_null<HistoryItem*> item,
+	SendOptions options);
+
+void EditMessageWithUploadedDocument(
+	HistoryItem *item,
+	RemoteFileInfo info,
+	SendOptions options);
+
+void EditMessageWithUploadedPhoto(
+	HistoryItem *item,
+	RemoteFileInfo info,
+	SendOptions options);
+
+mtpRequestId EditCaption(
+	not_null<HistoryItem*> item,
+	const TextWithEntities &caption,
+	SendOptions options,
+	Fn<void()> done,
+	Fn<void(const QString &)> fail);
+
+mtpRequestId EditTextMessage(
+	not_null<HistoryItem*> item,
+	const TextWithEntities &caption,
+	Data::WebPageDraft webpage,
+	SendOptions options,
+	Fn<void(mtpRequestId requestId)> done,
+	Fn<void(const QString &error, mtpRequestId requestId)> fail,
+	bool spoilered);
+
+void EditTodoList(
+	not_null<HistoryItem*> item,
+	const TodoListData &data,
+	SendOptions options,
+	Fn<void(mtpRequestId requestId)> done,
+	Fn<void(const QString &error, mtpRequestId requestId)> fail);
+
+} // namespace Api

Telegram/SourceFiles/api/api_filter_updates.h

@@ -0,0 +1,27 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+namespace Api {
+
+template <typename Type>
+void PerformForUpdate(
+		const MTPUpdates &updates,
+		Fn<void(const Type &)> callback) {
+	updates.match([&](const MTPDupdates &updates) {
+		for (const auto &update : updates.vupdates().v) {
+			update.match([&](const Type &d) {
+				callback(d);
+			}, [](const auto &) {
+			});
+		}
+	}, [](const auto &) {
+	});
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_global_privacy.cpp

@@ -0,0 +1,341 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_global_privacy.h"
+
+#include "apiwrap.h"
+#include "data/components/promo_suggestions.h"
+#include "data/data_user.h"
+#include "main/main_session.h"
+#include "main/main_app_config.h"
+
+namespace Api {
+
+PeerId ParsePaidReactionShownPeer(
+		not_null<Main::Session*> session,
+		const MTPPaidReactionPrivacy &value) {
+	return value.match([&](const MTPDpaidReactionPrivacyDefault &) {
+		return session->userPeerId();
+	}, [](const MTPDpaidReactionPrivacyAnonymous &) {
+		return PeerId();
+	}, [&](const MTPDpaidReactionPrivacyPeer &data) {
+		return data.vpeer().match([&](const MTPDinputPeerSelf &) {
+			return session->userPeerId();
+		}, [](const MTPDinputPeerUser &data) {
+			return peerFromUser(data.vuser_id());
+		}, [](const MTPDinputPeerChat &data) {
+			return peerFromChat(data.vchat_id());
+		}, [](const MTPDinputPeerChannel &data) {
+			return peerFromChannel(data.vchannel_id());
+		}, [](const MTPDinputPeerUserFromMessage &data) -> PeerId {
+			Unexpected("From message peer in ParsePaidReactionShownPeer.");
+		}, [](const MTPDinputPeerChannelFromMessage &data) -> PeerId {
+			Unexpected("From message peer in ParsePaidReactionShownPeer.");
+		}, [](const MTPDinputPeerEmpty &) -> PeerId {
+			Unexpected("Empty peer in ParsePaidReactionShownPeer.");
+		});
+	});
+}
+
+GlobalPrivacy::GlobalPrivacy(not_null<ApiWrap*> api)
+: _session(&api->session())
+, _api(&api->instance()) {
+}
+
+void GlobalPrivacy::reload(Fn<void()> callback) {
+	if (callback) {
+		_callbacks.push_back(std::move(callback));
+	}
+	if (_requestId) {
+		return;
+	}
+	_requestId = _api.request(MTPaccount_GetGlobalPrivacySettings(
+	)).done([=](const MTPGlobalPrivacySettings &result) {
+		_requestId = 0;
+		apply(result);
+		for (const auto &callback : base::take(_callbacks)) {
+			callback();
+		}
+	}).fail([=] {
+		_requestId = 0;
+		for (const auto &callback : base::take(_callbacks)) {
+			callback();
+		}
+	}).send();
+
+	_session->appConfig().value(
+	) | rpl::on_next([=] {
+		_showArchiveAndMute = _session->appConfig().get<bool>(
+			u"autoarchive_setting_available"_q,
+			false);
+	}, _session->lifetime());
+}
+
+bool GlobalPrivacy::archiveAndMuteCurrent() const {
+	return _archiveAndMute.current();
+}
+
+rpl::producer<bool> GlobalPrivacy::archiveAndMute() const {
+	return _archiveAndMute.value();
+}
+
+UnarchiveOnNewMessage GlobalPrivacy::unarchiveOnNewMessageCurrent() const {
+	return _unarchiveOnNewMessage.current();
+}
+
+auto GlobalPrivacy::unarchiveOnNewMessage() const
+-> rpl::producer<UnarchiveOnNewMessage> {
+	return _unarchiveOnNewMessage.value();
+}
+
+rpl::producer<bool> GlobalPrivacy::showArchiveAndMute() const {
+	using namespace rpl::mappers;
+
+	return rpl::combine(
+		archiveAndMute(),
+		_showArchiveAndMute.value(),
+		_1 || _2);
+}
+
+rpl::producer<> GlobalPrivacy::suggestArchiveAndMute() const {
+	return _session->promoSuggestions().requested(u"AUTOARCHIVE_POPULAR"_q);
+}
+
+void GlobalPrivacy::dismissArchiveAndMuteSuggestion() {
+	_session->promoSuggestions().dismiss(u"AUTOARCHIVE_POPULAR"_q);
+}
+
+void GlobalPrivacy::updateHideReadTime(bool hide) {
+	update(
+		archiveAndMuteCurrent(),
+		unarchiveOnNewMessageCurrent(),
+		hide,
+		newRequirePremiumCurrent(),
+		newChargeStarsCurrent(),
+		disallowedGiftTypesCurrent());
+}
+
+bool GlobalPrivacy::hideReadTimeCurrent() const {
+	return _hideReadTime.current();
+}
+
+rpl::producer<bool> GlobalPrivacy::hideReadTime() const {
+	return _hideReadTime.value();
+}
+
+bool GlobalPrivacy::newRequirePremiumCurrent() const {
+	return _newRequirePremium.current();
+}
+
+rpl::producer<bool> GlobalPrivacy::newRequirePremium() const {
+	return _newRequirePremium.value();
+}
+
+int GlobalPrivacy::newChargeStarsCurrent() const {
+	return _newChargeStars.current();
+}
+
+rpl::producer<int> GlobalPrivacy::newChargeStars() const {
+	return _newChargeStars.value();
+}
+
+void GlobalPrivacy::updateMessagesPrivacy(
+		bool requirePremium,
+		int chargeStars) {
+	update(
+		archiveAndMuteCurrent(),
+		unarchiveOnNewMessageCurrent(),
+		hideReadTimeCurrent(),
+		requirePremium,
+		chargeStars,
+		disallowedGiftTypesCurrent());
+}
+
+DisallowedGiftTypes GlobalPrivacy::disallowedGiftTypesCurrent() const {
+	return _disallowedGiftTypes.current();
+}
+
+auto GlobalPrivacy::disallowedGiftTypes() const
+		-> rpl::producer<DisallowedGiftTypes> {
+	return _disallowedGiftTypes.value();
+}
+
+void GlobalPrivacy::updateDisallowedGiftTypes(DisallowedGiftTypes types) {
+	update(
+		archiveAndMuteCurrent(),
+		unarchiveOnNewMessageCurrent(),
+		hideReadTimeCurrent(),
+		newRequirePremiumCurrent(),
+		newChargeStarsCurrent(),
+		types);
+}
+
+void GlobalPrivacy::loadPaidReactionShownPeer() {
+	if (_paidReactionShownPeerLoaded) {
+		return;
+	}
+	_paidReactionShownPeerLoaded = true;
+	_api.request(MTPmessages_GetPaidReactionPrivacy(
+	)).done([=](const MTPUpdates &result) {
+		_session->api().applyUpdates(result);
+	}).send();
+}
+
+void GlobalPrivacy::updatePaidReactionShownPeer(PeerId shownPeer) {
+	_paidReactionShownPeer = shownPeer;
+}
+
+PeerId GlobalPrivacy::paidReactionShownPeerCurrent() const {
+	return _paidReactionShownPeer.current();
+}
+
+rpl::producer<PeerId> GlobalPrivacy::paidReactionShownPeer() const {
+	return _paidReactionShownPeer.value();
+}
+
+void GlobalPrivacy::updateArchiveAndMute(bool value) {
+	update(
+		value,
+		unarchiveOnNewMessageCurrent(),
+		hideReadTimeCurrent(),
+		newRequirePremiumCurrent(),
+		newChargeStarsCurrent(),
+		disallowedGiftTypesCurrent());
+}
+
+void GlobalPrivacy::updateUnarchiveOnNewMessage(
+		UnarchiveOnNewMessage value) {
+	update(
+		archiveAndMuteCurrent(),
+		value,
+		hideReadTimeCurrent(),
+		newRequirePremiumCurrent(),
+		newChargeStarsCurrent(),
+		disallowedGiftTypesCurrent());
+}
+
+void GlobalPrivacy::update(
+		bool archiveAndMute,
+		UnarchiveOnNewMessage unarchiveOnNewMessage,
+		bool hideReadTime,
+		bool newRequirePremium,
+		int newChargeStars,
+		DisallowedGiftTypes disallowedGiftTypes) {
+	using Flag = MTPDglobalPrivacySettings::Flag;
+	using DisallowedFlag = MTPDdisallowedGiftsSettings::Flag;
+
+	_api.request(_requestId).cancel();
+	const auto newRequirePremiumAllowed = _session->premium()
+		|| _session->appConfig().newRequirePremiumFree();
+	const auto showGiftIcon
+		= (disallowedGiftTypes & DisallowedGiftType::SendHide);
+	const auto flags = Flag()
+		| (archiveAndMute
+			? Flag::f_archive_and_mute_new_noncontact_peers
+			: Flag())
+		| (unarchiveOnNewMessage == UnarchiveOnNewMessage::None
+			? Flag::f_keep_archived_unmuted
+			: Flag())
+		| (unarchiveOnNewMessage != UnarchiveOnNewMessage::AnyUnmuted
+			? Flag::f_keep_archived_folders
+			: Flag())
+		| (hideReadTime ? Flag::f_hide_read_marks : Flag())
+		| ((newRequirePremium && newRequirePremiumAllowed)
+			? Flag::f_new_noncontact_peers_require_premium
+			: Flag())
+		| Flag::f_noncontact_peers_paid_stars
+		| (showGiftIcon ? Flag::f_display_gifts_button : Flag())
+		| Flag::f_disallowed_gifts;
+	const auto disallowedFlags = DisallowedFlag()
+		| ((disallowedGiftTypes & DisallowedGiftType::Premium)
+			? DisallowedFlag::f_disallow_premium_gifts
+			: DisallowedFlag())
+		| ((disallowedGiftTypes & DisallowedGiftType::Unlimited)
+			? DisallowedFlag::f_disallow_unlimited_stargifts
+			: DisallowedFlag())
+		| ((disallowedGiftTypes & DisallowedGiftType::Limited)
+			? DisallowedFlag::f_disallow_limited_stargifts
+			: DisallowedFlag())
+		| ((disallowedGiftTypes & DisallowedGiftType::Unique)
+			? DisallowedFlag::f_disallow_unique_stargifts
+			: DisallowedFlag())
+		| ((disallowedGiftTypes & DisallowedGiftType::FromChannels)
+			? DisallowedFlag::f_disallow_stargifts_from_channels
+			: DisallowedFlag());
+	const auto typesWas = _disallowedGiftTypes.current();
+	const auto typesChanged = (typesWas != disallowedGiftTypes);
+	_requestId = _api.request(MTPaccount_SetGlobalPrivacySettings(
+		MTP_globalPrivacySettings(
+			MTP_flags(flags),
+			MTP_long(newChargeStars),
+			MTP_disallowedGiftsSettings(MTP_flags(disallowedFlags)))
+	)).done([=](const MTPGlobalPrivacySettings &result) {
+		_requestId = 0;
+		apply(result);
+		if (typesChanged) {
+			_session->user()->updateFullForced();
+		}
+	}).fail([=](const MTP::Error &error) {
+		_requestId = 0;
+		if (error.type() == u"PREMIUM_ACCOUNT_REQUIRED"_q) {
+			update(
+				archiveAndMute,
+				unarchiveOnNewMessage,
+				hideReadTime,
+				false,
+				0,
+				DisallowedGiftTypes());
+		}
+	}).send();
+	_archiveAndMute = archiveAndMute;
+	_unarchiveOnNewMessage = unarchiveOnNewMessage;
+	_hideReadTime = hideReadTime;
+	_newRequirePremium = newRequirePremium;
+	_newChargeStars = newChargeStars;
+	_disallowedGiftTypes = disallowedGiftTypes;
+}
+
+void GlobalPrivacy::apply(const MTPGlobalPrivacySettings &settings) {
+	const auto &data = settings.data();
+	_archiveAndMute = data.is_archive_and_mute_new_noncontact_peers();
+	_unarchiveOnNewMessage = data.is_keep_archived_unmuted()
+		? UnarchiveOnNewMessage::None
+		: data.is_keep_archived_folders()
+		? UnarchiveOnNewMessage::NotInFoldersUnmuted
+		: UnarchiveOnNewMessage::AnyUnmuted;
+	_hideReadTime = data.is_hide_read_marks();
+	_newRequirePremium = data.is_new_noncontact_peers_require_premium();
+	_newChargeStars = data.vnoncontact_peers_paid_stars().value_or_empty();
+	if (const auto gifts = data.vdisallowed_gifts()) {
+		const auto &disallow = gifts->data();
+		_disallowedGiftTypes = DisallowedGiftType()
+			| (disallow.is_disallow_unlimited_stargifts()
+				? DisallowedGiftType::Unlimited
+				: DisallowedGiftType())
+			| (disallow.is_disallow_limited_stargifts()
+				? DisallowedGiftType::Limited
+				: DisallowedGiftType())
+			| (disallow.is_disallow_unique_stargifts()
+				? DisallowedGiftType::Unique
+				: DisallowedGiftType())
+			| (disallow.is_disallow_premium_gifts()
+				? DisallowedGiftType::Premium
+				: DisallowedGiftType())
+			| (disallow.is_disallow_stargifts_from_channels()
+				? DisallowedGiftType::FromChannels
+				: DisallowedGiftType())
+			| (data.is_display_gifts_button()
+				? DisallowedGiftType::SendHide
+				: DisallowedGiftType());
+	} else {
+		_disallowedGiftTypes = data.is_display_gifts_button()
+			? DisallowedGiftType::SendHide
+			: DisallowedGiftType();
+	}
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_global_privacy.h

@@ -0,0 +1,111 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "base/flags.h"
+#include "mtproto/sender.h"
+
+class ApiWrap;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+enum class UnarchiveOnNewMessage {
+	None,
+	NotInFoldersUnmuted,
+	AnyUnmuted,
+};
+
+enum class DisallowedGiftType : uchar {
+	Limited      = 0x01,
+	Unlimited    = 0x02,
+	Unique       = 0x04,
+	FromChannels = 0x08,
+	Premium      = 0x10,
+	SendHide     = 0x20,
+};
+inline constexpr bool is_flag_type(DisallowedGiftType) { return true; }
+
+using DisallowedGiftTypes = base::flags<DisallowedGiftType>;
+
+[[nodiscard]] PeerId ParsePaidReactionShownPeer(
+	not_null<Main::Session*> session,
+	const MTPPaidReactionPrivacy &value);
+
+class GlobalPrivacy final {
+public:
+	explicit GlobalPrivacy(not_null<ApiWrap*> api);
+
+	void reload(Fn<void()> callback = nullptr);
+	void updateArchiveAndMute(bool value);
+	void updateUnarchiveOnNewMessage(UnarchiveOnNewMessage value);
+
+	[[nodiscard]] bool archiveAndMuteCurrent() const;
+	[[nodiscard]] rpl::producer<bool> archiveAndMute() const;
+	[[nodiscard]] auto unarchiveOnNewMessageCurrent() const
+		-> UnarchiveOnNewMessage;
+	[[nodiscard]] auto unarchiveOnNewMessage() const
+		-> rpl::producer<UnarchiveOnNewMessage>;
+	[[nodiscard]] rpl::producer<bool> showArchiveAndMute() const;
+	[[nodiscard]] rpl::producer<> suggestArchiveAndMute() const;
+	void dismissArchiveAndMuteSuggestion();
+
+	void updateHideReadTime(bool hide);
+	[[nodiscard]] bool hideReadTimeCurrent() const;
+	[[nodiscard]] rpl::producer<bool> hideReadTime() const;
+
+	[[nodiscard]] bool newRequirePremiumCurrent() const;
+	[[nodiscard]] rpl::producer<bool> newRequirePremium() const;
+
+	[[nodiscard]] int newChargeStarsCurrent() const;
+	[[nodiscard]] rpl::producer<int> newChargeStars() const;
+
+	void updateMessagesPrivacy(bool requirePremium, int chargeStars);
+
+	[[nodiscard]] DisallowedGiftTypes disallowedGiftTypesCurrent() const;
+	[[nodiscard]] auto disallowedGiftTypes() const
+		-> rpl::producer<DisallowedGiftTypes>;
+	void updateDisallowedGiftTypes(DisallowedGiftTypes types);
+
+	void loadPaidReactionShownPeer();
+	void updatePaidReactionShownPeer(PeerId shownPeer);
+	[[nodiscard]] PeerId paidReactionShownPeerCurrent() const;
+	[[nodiscard]] rpl::producer<PeerId> paidReactionShownPeer() const;
+
+private:
+	void apply(const MTPGlobalPrivacySettings &settings);
+
+	void update(
+		bool archiveAndMute,
+		UnarchiveOnNewMessage unarchiveOnNewMessage,
+		bool hideReadTime,
+		bool newRequirePremium,
+		int newChargeStars,
+		DisallowedGiftTypes disallowedGiftTypes);
+
+	const not_null<Main::Session*> _session;
+	MTP::Sender _api;
+	mtpRequestId _requestId = 0;
+	rpl::variable<bool> _archiveAndMute = false;
+	rpl::variable<UnarchiveOnNewMessage> _unarchiveOnNewMessage
+		= UnarchiveOnNewMessage::None;
+	rpl::variable<bool> _showArchiveAndMute = false;
+	rpl::variable<bool> _hideReadTime = false;
+	rpl::variable<bool> _newRequirePremium = false;
+	rpl::variable<int> _newChargeStars = 0;
+	rpl::variable<DisallowedGiftTypes> _disallowedGiftTypes;
+	rpl::variable<PeerId> _paidReactionShownPeer = false;
+	std::vector<Fn<void()>> _callbacks;
+	bool _paidReactionShownPeerLoaded = false;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_hash.cpp

@@ -0,0 +1,139 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_hash.h"
+
+#include "data/data_document.h"
+#include "data/data_session.h"
+#include "data/stickers/data_stickers.h"
+#include "main/main_session.h"
+
+namespace Api {
+namespace {
+
+[[nodiscard]] uint64 CountDocumentVectorHash(
+		const QVector<DocumentData*> vector) {
+	auto result = HashInit();
+	for (const auto document : vector) {
+		HashUpdate(result, document->id);
+	}
+	return HashFinalize(result);
+}
+
+[[nodiscard]] uint64 CountSpecialStickerSetHash(
+		not_null<Main::Session*> session,
+		uint64 setId) {
+	const auto &sets = session->data().stickers().sets();
+	const auto it = sets.find(setId);
+	if (it != sets.cend()) {
+		return CountDocumentVectorHash(it->second->stickers);
+	}
+	return 0;
+}
+
+[[nodiscard]] uint64 CountStickersOrderHash(
+		not_null<Main::Session*> session,
+		const Data::StickersSetsOrder &order,
+		bool checkOutdatedInfo) {
+	using Flag = Data::StickersSetFlag;
+	auto result = HashInit();
+	bool foundOutdated = false;
+	const auto &sets = session->data().stickers().sets();
+	for (auto i = order.cbegin(), e = order.cend(); i != e; ++i) {
+		auto it = sets.find(*i);
+		if (it != sets.cend()) {
+			const auto set = it->second.get();
+			if (set->id == Data::Stickers::DefaultSetId) {
+				foundOutdated = true;
+			} else if (!(set->flags & Flag::Special)
+				&& !(set->flags & Flag::Archived)) {
+				HashUpdate(result, set->hash);
+			}
+		}
+	}
+	return (!checkOutdatedInfo || !foundOutdated)
+		? HashFinalize(result)
+		: 0;
+}
+
+[[nodiscard]] uint64 CountFeaturedHash(
+		not_null<Main::Session*> session,
+		const Data::StickersSetsOrder &order) {
+	auto result = HashInit();
+	const auto &sets = session->data().stickers().sets();
+	for (const auto setId : order) {
+		HashUpdate(result, setId);
+
+		const auto it = sets.find(setId);
+		if (it != sets.cend()
+			&& (it->second->flags & Data::StickersSetFlag::Unread)) {
+			HashUpdate(result, 1);
+		}
+	}
+	return HashFinalize(result);
+}
+
+} // namespace
+
+uint64 CountStickersHash(
+		not_null<Main::Session*> session,
+		bool checkOutdatedInfo) {
+	return CountStickersOrderHash(
+		session,
+		session->data().stickers().setsOrder(),
+		checkOutdatedInfo);
+}
+
+uint64 CountMasksHash(
+		not_null<Main::Session*> session,
+		bool checkOutdatedInfo) {
+	return CountStickersOrderHash(
+		session,
+		session->data().stickers().maskSetsOrder(),
+		checkOutdatedInfo);
+}
+
+uint64 CountCustomEmojiHash(
+		not_null<Main::Session*> session,
+		bool checkOutdatedInfo) {
+	return CountStickersOrderHash(
+		session,
+		session->data().stickers().emojiSetsOrder(),
+		checkOutdatedInfo);
+}
+
+uint64 CountRecentStickersHash(
+		not_null<Main::Session*> session,
+		bool attached) {
+	return CountSpecialStickerSetHash(
+		session,
+		attached
+			? Data::Stickers::CloudRecentAttachedSetId
+			: Data::Stickers::CloudRecentSetId);
+}
+
+uint64 CountFavedStickersHash(not_null<Main::Session*> session) {
+	return CountSpecialStickerSetHash(session, Data::Stickers::FavedSetId);
+}
+
+uint64 CountFeaturedStickersHash(not_null<Main::Session*> session) {
+	return CountFeaturedHash(
+		session,
+		session->data().stickers().featuredSetsOrder());
+}
+
+uint64 CountFeaturedEmojiHash(not_null<Main::Session*> session) {
+	return CountFeaturedHash(
+		session,
+		session->data().stickers().featuredEmojiSetsOrder());
+}
+
+uint64 CountSavedGifsHash(not_null<Main::Session*> session) {
+	return CountDocumentVectorHash(session->data().stickers().savedGifs());
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_hash.h

@@ -0,0 +1,72 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+[[nodiscard]] uint64 CountStickersHash(
+	not_null<Main::Session*> session,
+	bool checkOutdatedInfo = false);
+[[nodiscard]] uint64 CountMasksHash(
+	not_null<Main::Session*> session,
+	bool checkOutdatedInfo = false);
+[[nodiscard]] uint64 CountCustomEmojiHash(
+	not_null<Main::Session*> session,
+	bool checkOutdatedInfo = false);
+[[nodiscard]] uint64 CountRecentStickersHash(
+	not_null<Main::Session*> session,
+	bool attached = false);
+[[nodiscard]] uint64 CountFavedStickersHash(
+	not_null<Main::Session*> session);
+[[nodiscard]] uint64 CountFeaturedStickersHash(
+	not_null<Main::Session*> session);
+[[nodiscard]] uint64 CountFeaturedEmojiHash(
+	not_null<Main::Session*> session);
+[[nodiscard]] uint64 CountSavedGifsHash(not_null<Main::Session*> session);
+
+[[nodiscard]] inline uint64 HashInit() {
+	return 0;
+}
+
+inline void HashUpdate(uint64 &already, uint64 value) {
+	already ^= (already >> 21);
+	already ^= (already << 35);
+	already ^= (already >> 4);
+	already += value;
+}
+
+inline void HashUpdate(uint64 &already, int64 value) {
+	HashUpdate(already, uint64(value));
+}
+
+inline void HashUpdate(uint64 &already, uint32 value) {
+	HashUpdate(already, uint64(value));
+}
+
+inline void HashUpdate(uint64 &already, int32 value) {
+	HashUpdate(already, int64(value));
+}
+
+[[nodiscard]] inline uint64 HashFinalize(uint64 already) {
+	return already;
+}
+
+template <typename IntRange>
+[[nodiscard]] inline uint64 CountHash(IntRange &&range) {
+	auto result = HashInit();
+	for (const auto value : range) {
+		HashUpdate(result, value);
+	}
+	return HashFinalize(result);
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_invite_links.cpp

@@ -0,0 +1,807 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_invite_links.h"
+
+#include "api/api_chat_participants.h"
+#include "data/data_changes.h"
+#include "data/data_channel.h"
+#include "data/data_chat.h"
+#include "data/data_peer.h"
+#include "data/data_session.h"
+#include "data/data_user.h"
+#include "main/main_session.h"
+#include "base/unixtime.h"
+#include "apiwrap.h"
+
+namespace Api {
+namespace {
+
+constexpr auto kFirstPage = 10;
+constexpr auto kPerPage = 50;
+constexpr auto kJoinedFirstPage = 10;
+
+void BringPermanentToFront(PeerInviteLinks &links) {
+	auto &list = links.links;
+	const auto i = ranges::find_if(list, [](const InviteLink &link) {
+		return link.permanent && !link.revoked;
+	});
+	if (i != end(list) && i != begin(list)) {
+		ranges::rotate(begin(list), i, i + 1);
+	}
+}
+
+void RemovePermanent(PeerInviteLinks &links) {
+	auto &list = links.links;
+	list.erase(ranges::remove_if(list, [](const InviteLink &link) {
+		return link.permanent && !link.revoked;
+	}), end(list));
+}
+
+} // namespace
+
+JoinedByLinkSlice ParseJoinedByLinkSlice(
+		not_null<PeerData*> peer,
+		const MTPmessages_ChatInviteImporters &slice) {
+	auto result = JoinedByLinkSlice();
+	slice.match([&](const MTPDmessages_chatInviteImporters &data) {
+		auto &owner = peer->session().data();
+		owner.processUsers(data.vusers());
+		result.count = data.vcount().v;
+		result.users.reserve(data.vimporters().v.size());
+		for (const auto &importer : data.vimporters().v) {
+			importer.match([&](const MTPDchatInviteImporter &data) {
+				result.users.push_back({
+					.user = owner.user(data.vuser_id()),
+					.date = data.vdate().v,
+					.viaFilterLink = data.is_via_chatlist(),
+				});
+			});
+		}
+	});
+	return result;
+}
+
+InviteLinks::InviteLinks(not_null<ApiWrap*> api) : _api(api) {
+}
+
+void InviteLinks::create(const CreateInviteLinkArgs &args) {
+	performCreate(args, false);
+}
+
+void InviteLinks::performCreate(
+		const CreateInviteLinkArgs &args,
+		bool revokeLegacyPermanent) {
+	if (const auto i = _createCallbacks.find(args.peer)
+		; i != end(_createCallbacks)) {
+		if (args.done) {
+			i->second.push_back(std::move(args.done));
+		}
+		return;
+	}
+	auto &callbacks = _createCallbacks[args.peer];
+	if (args.done) {
+		callbacks.push_back(std::move(args.done));
+	}
+
+	const auto requestApproval = !args.subscription && args.requestApproval;
+	using Flag = MTPmessages_ExportChatInvite::Flag;
+	_api->request(MTPmessages_ExportChatInvite(
+		MTP_flags((revokeLegacyPermanent
+			? Flag::f_legacy_revoke_permanent
+			: Flag(0))
+			| (!args.label.isEmpty() ? Flag::f_title : Flag(0))
+			| (args.expireDate ? Flag::f_expire_date : Flag(0))
+			| ((!requestApproval && args.usageLimit)
+				? Flag::f_usage_limit
+				: Flag(0))
+			| (requestApproval ? Flag::f_request_needed : Flag(0))
+			| (args.subscription ? Flag::f_subscription_pricing : Flag(0))),
+		args.peer->input(),
+		MTP_int(args.expireDate),
+		MTP_int(args.usageLimit),
+		MTP_string(args.label),
+		MTP_starsSubscriptionPricing(
+			MTP_int(args.subscription.period),
+			MTP_long(args.subscription.credits))
+	)).done([=, peer = args.peer](const MTPExportedChatInvite &result) {
+		const auto callbacks = _createCallbacks.take(peer);
+		const auto link = prepend(peer, peer->session().user(), result);
+		if (link && callbacks) {
+			for (const auto &callback : *callbacks) {
+				callback(*link);
+			}
+		}
+	}).fail([=, peer = args.peer] {
+		_createCallbacks.erase(peer);
+	}).send();
+}
+
+auto InviteLinks::lookupMyPermanent(not_null<PeerData*> peer) -> Link* {
+	auto i = _firstSlices.find(peer);
+	return (i != end(_firstSlices)) ? lookupMyPermanent(i->second) : nullptr;
+}
+
+auto InviteLinks::lookupMyPermanent(Links &links) -> Link* {
+	const auto first = links.links.begin();
+	return (first != end(links.links) && first->permanent && !first->revoked)
+		? &*first
+		: nullptr;
+}
+
+auto InviteLinks::lookupMyPermanent(const Links &links) const -> const Link* {
+	const auto first = links.links.begin();
+	return (first != end(links.links) && first->permanent && !first->revoked)
+		? &*first
+		: nullptr;
+}
+
+auto InviteLinks::prepend(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const MTPExportedChatInvite &invite) -> std::optional<Link> {
+	const auto link = parse(peer, invite);
+	if (!link) {
+		return link;
+	}
+	if (admin->isSelf()) {
+		prependMyToFirstSlice(peer, admin, *link);
+	}
+	_updates.fire(Update{
+		.peer = peer,
+		.admin = admin,
+		.now = *link
+	});
+	return link;
+}
+
+void InviteLinks::prependMyToFirstSlice(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const Link &link) {
+	Expects(admin->isSelf());
+
+	auto i = _firstSlices.find(peer);
+	if (i == end(_firstSlices)) {
+		i = _firstSlices.emplace(peer).first;
+	}
+	auto &links = i->second;
+	const auto permanent = lookupMyPermanent(links);
+	const auto hadPermanent = (permanent != nullptr);
+	auto updateOldPermanent = Update{
+		.peer = peer,
+		.admin = admin,
+	};
+	if (link.permanent && hadPermanent) {
+		updateOldPermanent.was = permanent->link;
+		updateOldPermanent.now = *permanent;
+		updateOldPermanent.now->revoked = true;
+		links.links.erase(begin(links.links));
+		if (links.count > 0) {
+			--links.count;
+		}
+	}
+	// Must not dereference 'permanent' pointer after that.
+
+	++links.count;
+	if (hadPermanent && !link.permanent) {
+		links.links.insert(begin(links.links) + 1, link);
+	} else {
+		links.links.insert(begin(links.links), link);
+	}
+
+	if (link.permanent) {
+		editPermanentLink(peer, link.link);
+	}
+	notify(peer);
+
+	if (updateOldPermanent.now) {
+		_updates.fire(std::move(updateOldPermanent));
+	}
+}
+
+void InviteLinks::edit(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const QString &link,
+		const QString &label,
+		TimeId expireDate,
+		int usageLimit,
+		bool requestApproval,
+		Fn<void(Link)> done) {
+	performEdit(
+		peer,
+		admin,
+		link,
+		std::move(done),
+		false,
+		label,
+		expireDate,
+		usageLimit,
+		requestApproval);
+}
+
+void InviteLinks::editTitle(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const QString &link,
+		const QString &label,
+		Fn<void(Link)> done) {
+	performEdit(peer, admin, link, done, false, label, 0, 0, false, true);
+}
+
+void InviteLinks::performEdit(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const QString &link,
+		Fn<void(Link)> done,
+		bool revoke,
+		const QString &label,
+		TimeId expireDate,
+		int usageLimit,
+		bool requestApproval,
+		bool editOnlyTitle) {
+	const auto key = LinkKey{ peer, link };
+	if (_deleteCallbacks.contains(key)) {
+		return;
+	} else if (const auto i = _editCallbacks.find(key)
+		; i != end(_editCallbacks)) {
+		if (done) {
+			i->second.push_back(std::move(done));
+		}
+		return;
+	}
+
+	auto &callbacks = _editCallbacks[key];
+	if (done) {
+		callbacks.push_back(std::move(done));
+	}
+	using Flag = MTPmessages_EditExportedChatInvite::Flag;
+	const auto flags = (revoke ? Flag::f_revoked : Flag(0))
+		| (!revoke ? Flag::f_title : Flag(0))
+		| (!revoke ? Flag::f_expire_date : Flag(0))
+		| ((!revoke && !requestApproval) ? Flag::f_usage_limit : Flag(0))
+		| ((!revoke && (requestApproval || !usageLimit))
+			? Flag::f_request_needed
+			: Flag(0));
+	_api->request(MTPmessages_EditExportedChatInvite(
+		MTP_flags(editOnlyTitle ? Flag::f_title : flags),
+		peer->input(),
+		MTP_string(link),
+		MTP_int(expireDate),
+		MTP_int(usageLimit),
+		MTP_bool(requestApproval),
+		MTP_string(label)
+	)).done([=](const MTPmessages_ExportedChatInvite &result) {
+		const auto callbacks = _editCallbacks.take(key);
+		const auto peer = key.peer;
+		result.match([&](const auto &data) {
+			_api->session().data().processUsers(data.vusers());
+			const auto link = parse(peer, data.vinvite());
+			if (!link) {
+				return;
+			}
+			auto i = _firstSlices.find(peer);
+			if (i != end(_firstSlices)) {
+				const auto j = ranges::find(
+					i->second.links,
+					key.link,
+					&Link::link);
+				if (j != end(i->second.links)) {
+					if (link->revoked && !j->revoked) {
+						i->second.links.erase(j);
+						if (i->second.count > 0) {
+							--i->second.count;
+						}
+					} else {
+						*j = *link;
+					}
+				}
+			}
+			for (const auto &callback : *callbacks) {
+				callback(*link);
+			}
+			_updates.fire(Update{
+				.peer = peer,
+				.admin = admin,
+				.was = key.link,
+				.now = link,
+			});
+
+			using Replaced = MTPDmessages_exportedChatInviteReplaced;
+			if constexpr (Replaced::Is<decltype(data)>()) {
+				prepend(peer, admin, data.vnew_invite());
+			}
+		});
+	}).fail([=] {
+		_editCallbacks.erase(key);
+	}).send();
+}
+
+void InviteLinks::revoke(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const QString &link,
+		Fn<void(Link)> done) {
+	performEdit(peer, admin, link, std::move(done), true);
+}
+
+void InviteLinks::revokePermanent(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const QString &link,
+		Fn<void()> done) {
+	const auto callback = [=](auto&&) { done(); };
+	if (!link.isEmpty()) {
+		performEdit(peer, admin, link, callback, true);
+	} else if (!admin->isSelf()) {
+		crl::on_main(&peer->session(), done);
+	} else {
+		performCreate({ peer, callback }, true);
+	}
+}
+
+void InviteLinks::destroy(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const QString &link,
+		Fn<void()> done) {
+	const auto key = LinkKey{ peer, link };
+
+	if (const auto i = _deleteCallbacks.find(key)
+		; i != end(_deleteCallbacks)) {
+		if (done) {
+			i->second.push_back(std::move(done));
+		}
+		return;
+	}
+
+	auto &callbacks = _deleteCallbacks[key];
+	if (done) {
+		callbacks.push_back(std::move(done));
+	}
+	_api->request(MTPmessages_DeleteExportedChatInvite(
+		peer->input(),
+		MTP_string(link)
+	)).done([=] {
+		const auto callbacks = _deleteCallbacks.take(key);
+		if (callbacks) {
+			for (const auto &callback : *callbacks) {
+				callback();
+			}
+		}
+		_updates.fire(Update{
+			.peer = peer,
+			.admin = admin,
+			.was = key.link,
+		});
+	}).fail([=] {
+		_deleteCallbacks.erase(key);
+	}).send();
+}
+
+void InviteLinks::destroyAllRevoked(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		Fn<void()> done) {
+	if (const auto i = _deleteRevokedCallbacks.find(peer)
+		; i != end(_deleteRevokedCallbacks)) {
+		if (done) {
+			i->second.push_back(std::move(done));
+		}
+		return;
+	}
+	auto &callbacks = _deleteRevokedCallbacks[peer];
+	if (done) {
+		callbacks.push_back(std::move(done));
+	}
+	_api->request(MTPmessages_DeleteRevokedExportedChatInvites(
+		peer->input(),
+		admin->inputUser()
+	)).done([=] {
+		if (const auto callbacks = _deleteRevokedCallbacks.take(peer)) {
+			for (const auto &callback : *callbacks) {
+				callback();
+			}
+		}
+		_allRevokedDestroyed.fire({ peer, admin });
+	}).send();
+}
+
+void InviteLinks::requestMyLinks(not_null<PeerData*> peer) {
+	if (_firstSliceRequests.contains(peer)) {
+		return;
+	}
+	const auto requestId = _api->request(MTPmessages_GetExportedChatInvites(
+		MTP_flags(0),
+		peer->input(),
+		MTP_inputUserSelf(),
+		MTPint(), // offset_date
+		MTPstring(), // offset_link
+		MTP_int(kFirstPage)
+	)).done([=](const MTPmessages_ExportedChatInvites &result) {
+		_firstSliceRequests.remove(peer);
+		auto slice = parseSlice(peer, result);
+		auto i = _firstSlices.find(peer);
+		const auto permanent = (i != end(_firstSlices))
+			? lookupMyPermanent(i->second)
+			: nullptr;
+		if (!permanent) {
+			BringPermanentToFront(slice);
+			const auto j = _firstSlices.emplace_or_assign(
+				peer,
+				std::move(slice)).first;
+			if (const auto permanent = lookupMyPermanent(j->second)) {
+				editPermanentLink(peer, permanent->link);
+			}
+		} else {
+			RemovePermanent(slice);
+			auto &existing = i->second.links;
+			existing.erase(begin(existing) + 1, end(existing));
+			existing.insert(
+				end(existing),
+				begin(slice.links),
+				end(slice.links));
+			i->second.count = std::max(slice.count, int(existing.size()));
+		}
+		notify(peer);
+	}).fail([=] {
+		_firstSliceRequests.remove(peer);
+	}).send();
+	_firstSliceRequests.emplace(peer, requestId);
+}
+
+void InviteLinks::processRequest(
+		not_null<PeerData*> peer,
+		const QString &link,
+		not_null<UserData*> user,
+		bool approved,
+		Fn<void()> done,
+		Fn<void()> fail) {
+	if (_processRequests.contains({ peer, user })) {
+		return;
+	}
+	_processRequests.emplace(
+		std::pair{ peer, user },
+		ProcessRequest{ std::move(done), std::move(fail) });
+	using Flag = MTPmessages_HideChatJoinRequest::Flag;
+	_api->request(MTPmessages_HideChatJoinRequest(
+		MTP_flags(approved ? Flag::f_approved : Flag(0)),
+		peer->input(),
+		user->inputUser()
+	)).done([=](const MTPUpdates &result) {
+		if (const auto chat = peer->asChat()) {
+			if (chat->count > 0) {
+				if (chat->participants.size() >= chat->count) {
+					chat->participants.emplace(user);
+				}
+				++chat->count;
+			}
+		} else if (const auto channel = peer->asChannel()) {
+			_api->chatParticipants().requestCountDelayed(channel);
+		}
+		_api->applyUpdates(result);
+		if (link.isEmpty() && approved) {
+			// We don't know the link that was used for this user.
+			// Prune all the cache.
+			for (auto i = begin(_firstJoined); i != end(_firstJoined);) {
+				if (i->first.peer == peer) {
+					i = _firstJoined.erase(i);
+				} else {
+					++i;
+				}
+			}
+			_firstSlices.remove(peer);
+		} else if (approved) {
+			const auto i = _firstJoined.find({ peer, link });
+			if (i != end(_firstJoined)) {
+				++i->second.count;
+				i->second.users.insert(
+					begin(i->second.users),
+					JoinedByLinkUser{ user, base::unixtime::now() });
+			}
+		}
+		if (const auto callbacks = _processRequests.take({ peer, user })) {
+			if (const auto &done = callbacks->done) {
+				done();
+			}
+		}
+	}).fail([=] {
+		if (const auto callbacks = _processRequests.take({ peer, user })) {
+			if (const auto &fail = callbacks->fail) {
+				fail();
+			}
+		}
+	}).send();
+}
+
+void InviteLinks::applyExternalUpdate(
+		not_null<PeerData*> peer,
+		InviteLink updated) {
+	if (const auto i = _firstSlices.find(peer); i != end(_firstSlices)) {
+		for (auto &link : i->second.links) {
+			if (link.link == updated.link) {
+				link = updated;
+			}
+		}
+	}
+	_updates.fire({
+		.peer = peer,
+		.admin = updated.admin,
+		.was = updated.link,
+		.now = updated,
+	});
+}
+
+std::optional<JoinedByLinkSlice> InviteLinks::lookupJoinedFirstSlice(
+		LinkKey key) const {
+	const auto i = _firstJoined.find(key);
+	return (i != end(_firstJoined))
+		? std::make_optional(i->second)
+		: std::nullopt;
+}
+
+std::optional<JoinedByLinkSlice> InviteLinks::joinedFirstSliceLoaded(
+		not_null<PeerData*> peer,
+		const QString &link) const {
+	return lookupJoinedFirstSlice({ peer, link });
+}
+
+rpl::producer<JoinedByLinkSlice> InviteLinks::joinedFirstSliceValue(
+		not_null<PeerData*> peer,
+		const QString &link,
+		int fullCount) {
+	const auto key = LinkKey{ peer, link };
+	auto current = lookupJoinedFirstSlice(key).value_or(JoinedByLinkSlice());
+	if (current.count == fullCount
+		&& (!fullCount || !current.users.empty())) {
+		return rpl::single(current);
+	}
+	current.count = fullCount;
+	const auto remove = int(current.users.size()) - current.count;
+	if (remove > 0) {
+		current.users.erase(end(current.users) - remove, end(current.users));
+	}
+	requestJoinedFirstSlice(key);
+	using namespace rpl::mappers;
+	return rpl::single(
+		current
+	) | rpl::then(_joinedFirstSliceLoaded.events(
+	) | rpl::filter(
+		_1 == key
+	) | rpl::map([=] {
+		return lookupJoinedFirstSlice(key).value_or(JoinedByLinkSlice());
+	}));
+}
+
+auto InviteLinks::updates(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin) const -> rpl::producer<Update> {
+	return _updates.events() | rpl::filter([=](const Update &update) {
+		return update.peer == peer && update.admin == admin;
+	});
+}
+
+rpl::producer<> InviteLinks::allRevokedDestroyed(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin) const {
+	return _allRevokedDestroyed.events(
+	) | rpl::filter([=](const AllRevokedDestroyed &which) {
+		return which.peer == peer && which.admin == admin;
+	}) | rpl::to_empty;
+}
+
+void InviteLinks::requestJoinedFirstSlice(LinkKey key) {
+	if (_firstJoinedRequests.contains(key)) {
+		return;
+	}
+	const auto requestId = _api->request(MTPmessages_GetChatInviteImporters(
+		MTP_flags(MTPmessages_GetChatInviteImporters::Flag::f_link),
+		key.peer->input(),
+		MTP_string(key.link),
+		MTPstring(), // q
+		MTP_int(0), // offset_date
+		MTP_inputUserEmpty(), // offset_user
+		MTP_int(kJoinedFirstPage)
+	)).done([=](const MTPmessages_ChatInviteImporters &result) {
+		_firstJoinedRequests.remove(key);
+		_firstJoined[key] = ParseJoinedByLinkSlice(key.peer, result);
+		_joinedFirstSliceLoaded.fire_copy(key);
+	}).fail([=] {
+		_firstJoinedRequests.remove(key);
+	}).send();
+	_firstJoinedRequests.emplace(key, requestId);
+}
+
+void InviteLinks::setMyPermanent(
+		not_null<PeerData*> peer,
+		const MTPExportedChatInvite &invite) {
+	auto link = parse(peer, invite);
+	if (!link) {
+		LOG(("API Error: "
+			"InviteLinks::setPermanent called with non-link."));
+		return;
+	} else if (!link->permanent) {
+		LOG(("API Error: "
+			"InviteLinks::setPermanent called with non-permanent link."));
+		return;
+	}
+	auto i = _firstSlices.find(peer);
+	if (i == end(_firstSlices)) {
+		i = _firstSlices.emplace(peer).first;
+	}
+	auto &links = i->second;
+	auto updateOldPermanent = Update{
+		.peer = peer,
+		.admin = peer->session().user(),
+	};
+	if (const auto permanent = lookupMyPermanent(links)) {
+		if (permanent->link == link->link) {
+			if (permanent->usage != link->usage) {
+				permanent->usage = link->usage;
+				_updates.fire(Update{
+					.peer = peer,
+					.admin = peer->session().user(),
+					.was = link->link,
+					.now = *permanent
+				});
+			}
+			return;
+		}
+		updateOldPermanent.was = permanent->link;
+		updateOldPermanent.now = *permanent;
+		updateOldPermanent.now->revoked = true;
+		links.links.erase(begin(links.links));
+		if (links.count > 0) {
+			--links.count;
+		}
+	}
+	links.links.insert(begin(links.links), *link);
+
+	editPermanentLink(peer, link->link);
+	notify(peer);
+
+	if (updateOldPermanent.now) {
+		_updates.fire(std::move(updateOldPermanent));
+	}
+	_updates.fire(Update{
+		.peer = peer,
+		.admin = peer->session().user(),
+		.now = link
+	});
+}
+
+void InviteLinks::clearMyPermanent(not_null<PeerData*> peer) {
+	auto i = _firstSlices.find(peer);
+	if (i == end(_firstSlices)) {
+		return;
+	}
+	auto &links = i->second;
+	const auto permanent = lookupMyPermanent(links);
+	if (!permanent) {
+		return;
+	}
+
+	auto updateOldPermanent = Update{
+		.peer = peer,
+		.admin = peer->session().user()
+	};
+	updateOldPermanent.was = permanent->link;
+	updateOldPermanent.now = *permanent;
+	updateOldPermanent.now->revoked = true;
+	links.links.erase(begin(links.links));
+	if (links.count > 0) {
+		--links.count;
+	}
+
+	editPermanentLink(peer, QString());
+	notify(peer);
+
+	if (updateOldPermanent.now) {
+		_updates.fire(std::move(updateOldPermanent));
+	}
+}
+
+void InviteLinks::notify(not_null<PeerData*> peer) {
+	peer->session().changes().peerUpdated(
+		peer,
+		Data::PeerUpdate::Flag::InviteLinks);
+}
+
+auto InviteLinks::myLinks(not_null<PeerData*> peer) const -> const Links & {
+	static const auto kEmpty = Links();
+	const auto i = _firstSlices.find(peer);
+	return (i != end(_firstSlices)) ? i->second : kEmpty;
+}
+
+auto InviteLinks::parseSlice(
+		not_null<PeerData*> peer,
+		const MTPmessages_ExportedChatInvites &slice) const -> Links {
+	auto i = _firstSlices.find(peer);
+	const auto permanent = (i != end(_firstSlices))
+		? lookupMyPermanent(i->second)
+		: nullptr;
+	auto result = Links();
+	slice.match([&](const MTPDmessages_exportedChatInvites &data) {
+		peer->session().data().processUsers(data.vusers());
+		result.count = data.vcount().v;
+		for (const auto &invite : data.vinvites().v) {
+			if (const auto link = parse(peer, invite)) {
+				if (!permanent || link->link != permanent->link) {
+					result.links.push_back(*link);
+				}
+			}
+		}
+	});
+	return result;
+}
+
+auto InviteLinks::parse(
+		not_null<PeerData*> peer,
+		const MTPExportedChatInvite &invite) const -> std::optional<Link> {
+	return invite.match([&](const MTPDchatInviteExported &data) {
+		return std::optional<Link>(Link{
+			.link = qs(data.vlink()),
+			.label = qs(data.vtitle().value_or_empty()),
+			.subscription = data.vsubscription_pricing()
+				? Data::PeerSubscription{
+					data.vsubscription_pricing()->data().vamount().v,
+					data.vsubscription_pricing()->data().vperiod().v,
+				}
+				: Data::PeerSubscription(),
+			.admin = peer->session().data().user(data.vadmin_id()),
+			.date = data.vdate().v,
+			.startDate = data.vstart_date().value_or_empty(),
+			.expireDate = data.vexpire_date().value_or_empty(),
+			.usageLimit = data.vusage_limit().value_or_empty(),
+			.usage = data.vusage().value_or_empty(),
+			.requested = data.vrequested().value_or_empty(),
+			.requestApproval = data.is_request_needed(),
+			.permanent = data.is_permanent(),
+			.revoked = data.is_revoked(),
+		});
+	}, [&](const MTPDchatInvitePublicJoinRequests &data) {
+		return std::optional<Link>();
+	});
+}
+
+void InviteLinks::requestMoreLinks(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		TimeId lastDate,
+		const QString &lastLink,
+		bool revoked,
+		Fn<void(Links)> done) {
+	using Flag = MTPmessages_GetExportedChatInvites::Flag;
+	_api->request(MTPmessages_GetExportedChatInvites(
+		MTP_flags(Flag::f_offset_link
+			| (revoked ? Flag::f_revoked : Flag(0))),
+		peer->input(),
+		admin->inputUser(),
+		MTP_int(lastDate),
+		MTP_string(lastLink),
+		MTP_int(kPerPage)
+	)).done([=](const MTPmessages_ExportedChatInvites &result) {
+		done(parseSlice(peer, result));
+	}).fail([=] {
+		done(Links());
+	}).send();
+}
+
+void InviteLinks::editPermanentLink(
+		not_null<PeerData*> peer,
+		const QString &link) {
+	if (const auto chat = peer->asChat()) {
+		chat->setInviteLink(link);
+	} else if (const auto channel = peer->asChannel()) {
+		channel->setInviteLink(link);
+	} else {
+		Unexpected("Peer in InviteLinks::editMainLink.");
+	}
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_invite_links.h

@@ -0,0 +1,245 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+class ApiWrap;
+
+#include "data/data_subscriptions.h"
+
+namespace Api {
+
+struct InviteLink {
+	QString link;
+	QString label;
+	Data::PeerSubscription subscription;
+	not_null<UserData*> admin;
+	TimeId date = 0;
+	TimeId startDate = 0;
+	TimeId expireDate = 0;
+	int usageLimit = 0;
+	int usage = 0;
+	int requested = 0;
+	bool requestApproval = false;
+	bool permanent = false;
+	bool revoked = false;
+};
+
+struct PeerInviteLinks {
+	std::vector<InviteLink> links;
+	int count = 0;
+};
+
+struct JoinedByLinkUser {
+	not_null<UserData*> user;
+	TimeId date = 0;
+	bool viaFilterLink = false;
+};
+
+struct JoinedByLinkSlice {
+	std::vector<JoinedByLinkUser> users;
+	int count = 0;
+};
+
+struct InviteLinkUpdate {
+	not_null<PeerData*> peer;
+	not_null<UserData*> admin;
+	QString was;
+	std::optional<InviteLink> now;
+};
+
+[[nodiscard]] JoinedByLinkSlice ParseJoinedByLinkSlice(
+	not_null<PeerData*> peer,
+	const MTPmessages_ChatInviteImporters &slice);
+
+struct CreateInviteLinkArgs {
+	not_null<PeerData*> peer;
+	Fn<void(InviteLink)> done = nullptr;
+	QString label;
+	TimeId expireDate = 0;
+	int usageLimit = 0;
+	bool requestApproval = false;
+	Data::PeerSubscription subscription;
+};
+
+class InviteLinks final {
+public:
+	explicit InviteLinks(not_null<ApiWrap*> api);
+
+	using Link = InviteLink;
+	using Links = PeerInviteLinks;
+	using Update = InviteLinkUpdate;
+
+	void create(const CreateInviteLinkArgs &args);
+	void edit(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const QString &link,
+		const QString &label,
+		TimeId expireDate,
+		int usageLimit,
+		bool requestApproval,
+		Fn<void(Link)> done = nullptr);
+	void editTitle(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const QString &link,
+		const QString &label,
+		Fn<void(Link)> done = nullptr);
+	void revoke(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const QString &link,
+		Fn<void(Link)> done = nullptr);
+	void revokePermanent(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const QString &link,
+		Fn<void()> done = nullptr);
+	void destroy(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const QString &link,
+		Fn<void()> done = nullptr);
+	void destroyAllRevoked(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		Fn<void()> done = nullptr);
+
+	void setMyPermanent(
+		not_null<PeerData*> peer,
+		const MTPExportedChatInvite &invite);
+	void clearMyPermanent(not_null<PeerData*> peer);
+
+	void requestMyLinks(not_null<PeerData*> peer);
+	[[nodiscard]] const Links &myLinks(not_null<PeerData*> peer) const;
+
+	void processRequest(
+		not_null<PeerData*> peer,
+		const QString &link,
+		not_null<UserData*> user,
+		bool approved,
+		Fn<void()> done,
+		Fn<void()> fail);
+	void applyExternalUpdate(not_null<PeerData*> peer, InviteLink updated);
+
+	[[nodiscard]] rpl::producer<JoinedByLinkSlice> joinedFirstSliceValue(
+		not_null<PeerData*> peer,
+		const QString &link,
+		int fullCount);
+	[[nodiscard]] std::optional<JoinedByLinkSlice> joinedFirstSliceLoaded(
+		not_null<PeerData*> peer,
+		const QString &link) const;
+	[[nodiscard]] rpl::producer<Update> updates(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin) const;
+	[[nodiscard]] rpl::producer<> allRevokedDestroyed(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin) const;
+
+	void requestMoreLinks(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		TimeId lastDate,
+		const QString &lastLink,
+		bool revoked,
+		Fn<void(Links)> done);
+
+private:
+	struct LinkKey {
+		not_null<PeerData*> peer;
+		QString link;
+
+		friend inline bool operator<(const LinkKey &a, const LinkKey &b) {
+			return (a.peer == b.peer)
+				? (a.link < b.link)
+				: (a.peer < b.peer);
+		}
+		friend inline bool operator==(const LinkKey &a, const LinkKey &b) {
+			return (a.peer == b.peer) && (a.link == b.link);
+		}
+	};
+	struct ProcessRequest {
+		Fn<void()> done;
+		Fn<void()> fail;
+	};
+
+	[[nodiscard]] Links parseSlice(
+		not_null<PeerData*> peer,
+		const MTPmessages_ExportedChatInvites &slice) const;
+	[[nodiscard]] std::optional<Link> parse(
+		not_null<PeerData*> peer,
+		const MTPExportedChatInvite &invite) const;
+	[[nodiscard]] Link *lookupMyPermanent(not_null<PeerData*> peer);
+	[[nodiscard]] Link *lookupMyPermanent(Links &links);
+	[[nodiscard]] const Link *lookupMyPermanent(const Links &links) const;
+	std::optional<Link> prepend(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const MTPExportedChatInvite &invite);
+	void prependMyToFirstSlice(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const Link &link);
+	void notify(not_null<PeerData*> peer);
+
+	void editPermanentLink(
+		not_null<PeerData*> peer,
+		const QString &link);
+
+	void performEdit(
+		not_null<PeerData*> peer,
+		not_null<UserData*> admin,
+		const QString &link,
+		Fn<void(Link)> done,
+		bool revoke,
+		const QString &label = QString(),
+		TimeId expireDate = 0,
+		int usageLimit = 0,
+		bool requestApproval = false,
+		bool editOnlyTitle = false);
+	void performCreate(
+		const CreateInviteLinkArgs &args,
+		bool revokeLegacyPermanent);
+
+	void requestJoinedFirstSlice(LinkKey key);
+	[[nodiscard]] std::optional<JoinedByLinkSlice> lookupJoinedFirstSlice(
+		LinkKey key) const;
+
+	const not_null<ApiWrap*> _api;
+
+	base::flat_map<not_null<PeerData*>, Links> _firstSlices;
+	base::flat_map<not_null<PeerData*>, mtpRequestId> _firstSliceRequests;
+
+	base::flat_map<LinkKey, JoinedByLinkSlice> _firstJoined;
+	base::flat_map<LinkKey, mtpRequestId> _firstJoinedRequests;
+	rpl::event_stream<LinkKey> _joinedFirstSliceLoaded;
+
+	base::flat_map<
+		not_null<PeerData*>,
+		std::vector<Fn<void(Link)>>> _createCallbacks;
+	base::flat_map<LinkKey, std::vector<Fn<void(Link)>>> _editCallbacks;
+	base::flat_map<LinkKey, std::vector<Fn<void()>>> _deleteCallbacks;
+	base::flat_map<
+		not_null<PeerData*>,
+		std::vector<Fn<void()>>> _deleteRevokedCallbacks;
+
+	base::flat_map<
+		std::pair<not_null<PeerData*>, not_null<UserData*>>,
+		ProcessRequest> _processRequests;
+
+	rpl::event_stream<Update> _updates;
+
+	struct AllRevokedDestroyed {
+		not_null<PeerData*> peer;
+		not_null<UserData*> admin;
+	};
+	rpl::event_stream<AllRevokedDestroyed> _allRevokedDestroyed;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_media.cpp

@@ -0,0 +1,142 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_media.h"
+
+#include "api/api_common.h"
+#include "data/data_document.h"
+#include "data/stickers/data_stickers_set.h"
+#include "history/history_item.h"
+
+namespace Api {
+namespace {
+
+MTPVector<MTPDocumentAttribute> ComposeSendingDocumentAttributes(
+		not_null<DocumentData*> document) {
+	const auto filenameAttribute = MTP_documentAttributeFilename(
+		MTP_string(document->filename()));
+	const auto dimensions = document->dimensions;
+	auto attributes = QVector<MTPDocumentAttribute>(1, filenameAttribute);
+	if (dimensions.width() > 0 && dimensions.height() > 0) {
+		if (document->hasDuration() && !document->hasMimeType(u"image/gif"_q)) {
+			auto flags = MTPDdocumentAttributeVideo::Flags(0);
+			using VideoFlag = MTPDdocumentAttributeVideo::Flag;
+			if (document->isVideoMessage()) {
+				flags |= VideoFlag::f_round_message;
+			}
+			if (document->supportsStreaming()) {
+				flags |= VideoFlag::f_supports_streaming;
+			}
+			attributes.push_back(MTP_documentAttributeVideo(
+				MTP_flags(flags),
+				MTP_double(document->duration() / 1000.),
+				MTP_int(dimensions.width()),
+				MTP_int(dimensions.height()),
+				MTPint(), // preload_prefix_size
+				MTPdouble(), // video_start_ts
+				MTPstring())); // video_codec
+		} else {
+			attributes.push_back(MTP_documentAttributeImageSize(
+				MTP_int(dimensions.width()),
+				MTP_int(dimensions.height())));
+		}
+	}
+	if (document->type == AnimatedDocument) {
+		attributes.push_back(MTP_documentAttributeAnimated());
+	} else if (document->type == StickerDocument && document->sticker()) {
+		attributes.push_back(MTP_documentAttributeSticker(
+			MTP_flags(0),
+			MTP_string(document->sticker()->alt),
+			Data::InputStickerSet(document->sticker()->set),
+			MTPMaskCoords()));
+	} else if (const auto song = document->song()) {
+		const auto flags = MTPDdocumentAttributeAudio::Flag::f_title
+			| MTPDdocumentAttributeAudio::Flag::f_performer;
+		attributes.push_back(MTP_documentAttributeAudio(
+			MTP_flags(flags),
+			MTP_int(document->duration() / 1000),
+			MTP_string(song->title),
+			MTP_string(song->performer),
+			MTPstring()));
+	} else if (const auto voice = document->voice()) {
+		const auto flags = MTPDdocumentAttributeAudio::Flag::f_voice
+			| MTPDdocumentAttributeAudio::Flag::f_waveform;
+		attributes.push_back(MTP_documentAttributeAudio(
+			MTP_flags(flags),
+			MTP_int(document->duration() / 1000),
+			MTPstring(),
+			MTPstring(),
+			MTP_bytes(documentWaveformEncode5bit(voice->waveform))));
+	}
+	return MTP_vector<MTPDocumentAttribute>(attributes);
+}
+
+} // namespace
+
+MTPInputMedia PrepareUploadedPhoto(
+		not_null<HistoryItem*> item,
+		RemoteFileInfo info) {
+	using Flag = MTPDinputMediaUploadedPhoto::Flag;
+	const auto spoiler = item->media() && item->media()->hasSpoiler();
+	const auto ttlSeconds = item->media()
+		? item->media()->ttlSeconds()
+		: 0;
+	const auto flags = (spoiler ? Flag::f_spoiler : Flag())
+		| (info.attachedStickers.empty() ? Flag() : Flag::f_stickers)
+		| (ttlSeconds ? Flag::f_ttl_seconds : Flag());
+	return MTP_inputMediaUploadedPhoto(
+		MTP_flags(flags),
+		info.file,
+		MTP_vector<MTPInputDocument>(
+			ranges::to<QVector<MTPInputDocument>>(info.attachedStickers)),
+		MTP_int(ttlSeconds));
+}
+
+MTPInputMedia PrepareUploadedDocument(
+		not_null<HistoryItem*> item,
+		RemoteFileInfo info) {
+	if (!item || !item->media() || !item->media()->document()) {
+		return MTP_inputMediaEmpty();
+	}
+	using Flag = MTPDinputMediaUploadedDocument::Flag;
+	const auto spoiler = item->media() && item->media()->hasSpoiler();
+	const auto ttlSeconds = item->media()
+		? item->media()->ttlSeconds()
+		: 0;
+	const auto flags = (spoiler ? Flag::f_spoiler : Flag())
+		| (info.thumb ? Flag::f_thumb : Flag())
+		| (item->groupId() ? Flag::f_nosound_video : Flag())
+		| (info.attachedStickers.empty() ? Flag::f_stickers : Flag())
+		| (ttlSeconds ? Flag::f_ttl_seconds : Flag())
+		| (info.videoCover ? Flag::f_video_cover : Flag());
+	const auto document = item->media()->document();
+	return MTP_inputMediaUploadedDocument(
+		MTP_flags(flags),
+		info.file,
+		info.thumb.value_or(MTPInputFile()),
+		MTP_string(document->mimeString()),
+		ComposeSendingDocumentAttributes(document),
+		MTP_vector<MTPInputDocument>(
+			ranges::to<QVector<MTPInputDocument>>(info.attachedStickers)),
+		info.videoCover.value_or(MTPInputPhoto()),
+		MTP_int(0), // video_timestamp
+		MTP_int(ttlSeconds));
+}
+
+bool HasAttachedStickers(MTPInputMedia media) {
+	return media.match([&](const MTPDinputMediaUploadedPhoto &photo) -> bool {
+		return (photo.vflags().v
+			& MTPDinputMediaUploadedPhoto::Flag::f_stickers);
+	}, [&](const MTPDinputMediaUploadedDocument &document) -> bool {
+		return (document.vflags().v
+			& MTPDinputMediaUploadedDocument::Flag::f_stickers);
+	}, [](const auto &d) {
+		return false;
+	});
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_media.h

@@ -0,0 +1,26 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+class HistoryItem;
+
+namespace Api {
+
+struct RemoteFileInfo;
+
+MTPInputMedia PrepareUploadedPhoto(
+	not_null<HistoryItem*> item,
+	RemoteFileInfo info);
+
+MTPInputMedia PrepareUploadedDocument(
+	not_null<HistoryItem*> item,
+	RemoteFileInfo info);
+
+bool HasAttachedStickers(MTPInputMedia media);
+
+} // namespace Api

Telegram/SourceFiles/api/api_messages_search.cpp

@@ -0,0 +1,212 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_messages_search.h"
+
+#include "apiwrap.h"
+#include "data/data_channel.h"
+#include "data/data_histories.h"
+#include "data/data_message_reaction_id.h"
+#include "data/data_peer.h"
+#include "data/data_session.h"
+#include "history/history.h"
+#include "history/history_item.h"
+#include "main/main_session.h"
+
+namespace Api {
+namespace {
+
+constexpr auto kSearchPerPage = 50;
+
+[[nodiscard]] MessageIdsList HistoryItemsFromTL(
+		not_null<Data::Session*> data,
+		const QVector<MTPMessage> &messages) {
+	auto result = MessageIdsList();
+	for (const auto &message : messages) {
+		const auto peerId = PeerFromMessage(message);
+		if (data->peerLoaded(peerId)) {
+			if (DateFromMessage(message)) {
+				const auto item = data->addNewMessage(
+					message,
+					MessageFlags(),
+					NewMessageType::Existing);
+				result.push_back(item->fullId());
+			}
+		} else {
+			LOG(("API Error: a search results with not loaded peer %1"
+				).arg(peerId.value));
+		}
+	}
+	return result;
+}
+
+[[nodiscard]] QString RequestToToken(
+		const MessagesSearch::Request &request) {
+	auto result = request.query;
+	if (request.from) {
+		result += '\n' + QString::number(request.from->id.value);
+	}
+	for (const auto &tag : request.tags) {
+		result += '\n';
+		if (const auto customId = tag.custom()) {
+			result += u"custom"_q + QString::number(customId);
+		} else {
+			result += u"emoji"_q + tag.emoji();
+		}
+	}
+	return result;
+}
+
+} // namespace
+
+MessagesSearch::MessagesSearch(not_null<History*> history)
+: _history(history) {
+}
+
+MessagesSearch::~MessagesSearch() {
+	_history->owner().histories().cancelRequest(
+		base::take(_searchInHistoryRequest));
+}
+
+void MessagesSearch::searchMessages(Request request) {
+	_request = std::move(request);
+	_offsetId = {};
+	searchRequest();
+}
+
+void MessagesSearch::searchMore() {
+	if (_searchInHistoryRequest || _requestId) {
+		return;
+	}
+	searchRequest();
+}
+
+void MessagesSearch::searchRequest() {
+	const auto nextToken = RequestToToken(_request);
+	if (!_offsetId) {
+		const auto it = _cacheOfStartByToken.find(nextToken);
+		if (it != end(_cacheOfStartByToken)) {
+			_requestId = 0;
+			searchReceived(it->second, _requestId, nextToken);
+			return;
+		}
+	}
+	auto callback = [=](Fn<void()> finish) {
+		using Flag = MTPmessages_Search::Flag;
+		const auto from = _request.from;
+		const auto fromPeer = _history->peer->isUser() ? nullptr : from;
+		const auto savedPeer = _history->peer->isSelf() ? from : nullptr;
+		_requestId = _history->session().api().request(MTPmessages_Search(
+			MTP_flags((fromPeer ? Flag::f_from_id : Flag())
+				| (savedPeer ? Flag::f_saved_peer_id : Flag())
+				| (_request.topMsgId ? Flag::f_top_msg_id : Flag())
+				| (_request.tags.empty() ? Flag() : Flag::f_saved_reaction)),
+			_history->peer->input(),
+			MTP_string(_request.query),
+			(fromPeer ? fromPeer->input() : MTP_inputPeerEmpty()),
+			(savedPeer ? savedPeer->input() : MTP_inputPeerEmpty()),
+			MTP_vector_from_range(_request.tags | ranges::views::transform(
+				Data::ReactionToMTP
+			)),
+			MTP_int(_request.topMsgId), // top_msg_id
+			MTP_inputMessagesFilterEmpty(),
+			MTP_int(0), // min_date
+			MTP_int(0), // max_date
+			MTP_int(_offsetId), // offset_id
+			MTP_int(0), // add_offset
+			MTP_int(kSearchPerPage),
+			MTP_int(0), // max_id
+			MTP_int(0), // min_id
+			MTP_long(0) // hash
+		)).done([=](const TLMessages &result, mtpRequestId id) {
+			_searchInHistoryRequest = 0;
+			searchReceived(result, id, nextToken);
+			finish();
+		}).fail([=](const MTP::Error &error, mtpRequestId id) {
+			_searchInHistoryRequest = 0;
+
+			if (_requestId == id) {
+				_requestId = 0;
+			}
+			if (error.type() == u"SEARCH_QUERY_EMPTY"_q) {
+				_messagesFounds.fire({ 0, MessageIdsList(), nextToken });
+			}
+
+			finish();
+		}).send();
+		return _requestId;
+	};
+	_searchInHistoryRequest = _history->owner().histories().sendRequest(
+		_history,
+		Data::Histories::RequestType::History,
+		std::move(callback));
+}
+
+void MessagesSearch::searchReceived(
+		const TLMessages &result,
+		mtpRequestId requestId,
+		const QString &nextToken) {
+	if (requestId != _requestId) {
+		return;
+	}
+	auto &owner = _history->owner();
+	auto found = result.match([&](const MTPDmessages_messages &data) {
+		if (_requestId != 0) {
+			// Don't apply cached data!
+			owner.processUsers(data.vusers());
+			owner.processChats(data.vchats());
+			_history->peer->processTopics(data.vtopics());
+		}
+		auto items = HistoryItemsFromTL(&owner, data.vmessages().v);
+		const auto total = int(data.vmessages().v.size());
+		return FoundMessages{ total, std::move(items), nextToken };
+	}, [&](const MTPDmessages_messagesSlice &data) {
+		if (_requestId != 0) {
+			// Don't apply cached data!
+			owner.processUsers(data.vusers());
+			owner.processChats(data.vchats());
+			_history->peer->processTopics(data.vtopics());
+		}
+		auto items = HistoryItemsFromTL(&owner, data.vmessages().v);
+		// data.vnext_rate() is used only in global search.
+		const auto total = int(data.vcount().v);
+		return FoundMessages{ total, std::move(items), nextToken };
+	}, [&](const MTPDmessages_channelMessages &data) {
+		if (_requestId != 0) {
+			// Don't apply cached data!
+			owner.processUsers(data.vusers());
+			owner.processChats(data.vchats());
+			if (const auto channel = _history->peer->asChannel()) {
+				channel->ptsReceived(data.vpts().v);
+			} else {
+				LOG(("API Error: "
+					"received messages.channelMessages when no channel "
+					"was passed!"));
+			}
+			_history->peer->processTopics(data.vtopics());
+		}
+		auto items = HistoryItemsFromTL(&owner, data.vmessages().v);
+		const auto total = int(data.vcount().v);
+		return FoundMessages{ total, std::move(items), nextToken };
+	}, [](const MTPDmessages_messagesNotModified &data) {
+		return FoundMessages{};
+	});
+	if (!_offsetId) {
+		_cacheOfStartByToken.emplace(nextToken, result);
+	}
+	_requestId = 0;
+	_offsetId = found.messages.empty()
+		? MsgId()
+		: found.messages.back().msg;
+	_messagesFounds.fire(std::move(found));
+}
+
+rpl::producer<FoundMessages> MessagesSearch::messagesFounds() const {
+	return _messagesFounds.events();
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_messages_search.h

@@ -0,0 +1,75 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "base/qt/qt_compare.h"
+#include "data/data_message_reaction_id.h"
+
+class HistoryItem;
+class History;
+class PeerData;
+
+namespace Data {
+struct ReactionId;
+} // namespace Data
+
+namespace Api {
+
+struct FoundMessages {
+	int total = -1;
+	MessageIdsList messages;
+	QString nextToken;
+};
+
+class MessagesSearch final {
+public:
+	struct Request {
+		QString query;
+		PeerData *from = nullptr;
+		std::vector<Data::ReactionId> tags;
+		MsgId topMsgId;
+
+		friend inline bool operator==(
+			const Request &,
+			const Request &) = default;
+		friend inline auto operator<=>(
+			const Request &,
+			const Request &) = default;
+	};
+
+	explicit MessagesSearch(not_null<History*> history);
+	~MessagesSearch();
+
+	void searchMessages(Request request);
+	void searchMore();
+
+	[[nodiscard]] rpl::producer<FoundMessages> messagesFounds() const;
+
+private:
+	using TLMessages = MTPmessages_Messages;
+	void searchRequest();
+	void searchReceived(
+		const TLMessages &result,
+		mtpRequestId requestId,
+		const QString &nextToken);
+
+	const not_null<History*> _history;
+
+	base::flat_map<QString, TLMessages> _cacheOfStartByToken;
+
+	Request _request;
+	MsgId _offsetId;
+
+	int _searchInHistoryRequest = 0; // Not real mtpRequestId.
+	mtpRequestId _requestId = 0;
+
+	rpl::event_stream<FoundMessages> _messagesFounds;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_messages_search_merged.cpp

@@ -0,0 +1,115 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_messages_search_merged.h"
+
+#include "history/history.h"
+
+namespace Api {
+
+MessagesSearchMerged::MessagesSearchMerged(not_null<History*> history)
+: _apiSearch(history) {
+	if (const auto migrated = history->migrateFrom()) {
+		_migratedSearch.emplace(migrated);
+	}
+	const auto checkWaitingForTotal = [=] {
+		if (_waitingForTotal) {
+			if (_concatedFound.total >= 0 && _migratedFirstFound.total >= 0) {
+				_waitingForTotal = false;
+				_concatedFound.total += _migratedFirstFound.total;
+				_newFounds.fire({});
+			}
+		} else {
+			_newFounds.fire({});
+		}
+	};
+
+	const auto checkFull = [=](const FoundMessages &data) {
+		if (data.total == int(_concatedFound.messages.size())) {
+			_isFull = true;
+			addFound(_migratedFirstFound);
+		}
+	};
+
+	_apiSearch.messagesFounds(
+	) | rpl::on_next([=](const FoundMessages &data) {
+		if (data.nextToken == _concatedFound.nextToken) {
+			addFound(data);
+			checkFull(data);
+			_nextFounds.fire({});
+		} else {
+			_concatedFound = data;
+			checkFull(data);
+			checkWaitingForTotal();
+		}
+	}, _lifetime);
+
+	if (_migratedSearch) {
+		_migratedSearch->messagesFounds(
+		) | rpl::on_next([=](const FoundMessages &data) {
+			if (_isFull) {
+				addFound(data);
+			}
+			if (data.nextToken == _migratedFirstFound.nextToken) {
+				_nextFounds.fire({});
+			} else {
+				_migratedFirstFound = data;
+				checkWaitingForTotal();
+			}
+		}, _lifetime);
+	}
+}
+
+void MessagesSearchMerged::disableMigrated() {
+	_migratedSearch = std::nullopt;
+}
+
+void MessagesSearchMerged::addFound(const FoundMessages &data) {
+	for (const auto &message : data.messages) {
+		_concatedFound.messages.push_back(message);
+	}
+}
+
+const FoundMessages &MessagesSearchMerged::messages() const {
+	return _concatedFound;
+}
+
+const MessagesSearch::Request &MessagesSearchMerged::request() const {
+	return _request;
+}
+
+void MessagesSearchMerged::clear() {
+	_concatedFound = {};
+	_migratedFirstFound = {};
+}
+
+void MessagesSearchMerged::search(const Request &search) {
+	_request = search;
+	if (_migratedSearch) {
+		_waitingForTotal = true;
+		_migratedSearch->searchMessages(search);
+	}
+	_apiSearch.searchMessages(search);
+}
+
+void MessagesSearchMerged::searchMore() {
+	if (_migratedSearch && _isFull) {
+		_migratedSearch->searchMore();
+	} else {
+		_apiSearch.searchMore();
+	}
+}
+
+rpl::producer<> MessagesSearchMerged::newFounds() const {
+	return _newFounds.events();
+}
+
+rpl::producer<> MessagesSearchMerged::nextFounds() const {
+	return _nextFounds.events();
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_messages_search_merged.h

@@ -0,0 +1,61 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "api/api_messages_search.h"
+
+class History;
+class PeerData;
+
+namespace Data {
+struct ReactionId;
+} // namespace Data
+
+namespace Api {
+
+// Search in both of history and migrated history, if it exists.
+class MessagesSearchMerged final {
+public:
+	using Request = MessagesSearch::Request;
+	using CachedRequests = base::flat_set<Request>;
+
+	MessagesSearchMerged(not_null<History*> history);
+
+	void clear();
+	void search(const Request &search);
+	void searchMore();
+	void disableMigrated();
+
+	[[nodiscard]] const FoundMessages &messages() const;
+	[[nodiscard]] const Request &request() const;
+
+	[[nodiscard]] rpl::producer<> newFounds() const;
+	[[nodiscard]] rpl::producer<> nextFounds() const;
+
+private:
+	void addFound(const FoundMessages &data);
+
+	MessagesSearch _apiSearch;
+	Request _request;
+
+	std::optional<MessagesSearch> _migratedSearch;
+	FoundMessages _migratedFirstFound;
+
+	FoundMessages _concatedFound;
+
+	bool _waitingForTotal = false;
+	bool _isFull = false;
+
+	rpl::event_stream<> _newFounds;
+	rpl::event_stream<> _nextFounds;
+
+	rpl::lifetime _lifetime;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_peer_colors.cpp

@@ -0,0 +1,278 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_peer_colors.h"
+
+#include "apiwrap.h"
+#include "data/data_peer.h"
+#include "window/themes/window_theme.h"
+#include "ui/chat/chat_style.h"
+#include "ui/color_int_conversion.h"
+
+namespace Api {
+namespace {
+
+constexpr auto kRequestEach = 3600 * crl::time(1000);
+
+} // namespace
+
+PeerColors::PeerColors(not_null<ApiWrap*> api)
+: _api(&api->instance())
+, _timer([=] { request(); requestProfile(); }) {
+	request();
+	requestProfile();
+	_timer.callEach(kRequestEach);
+}
+
+PeerColors::~PeerColors() = default;
+
+void PeerColors::request() {
+	if (_requestId) {
+		return;
+	}
+	_requestId = _api.request(MTPhelp_GetPeerColors(
+		MTP_int(_hash)
+	)).done([=](const MTPhelp_PeerColors &result) {
+		_requestId = 0;
+		result.match([&](const MTPDhelp_peerColors &data) {
+			_hash = data.vhash().v;
+			apply(data);
+		}, [](const MTPDhelp_peerColorsNotModified &) {
+		});
+	}).fail([=] {
+		_requestId = 0;
+	}).send();
+}
+
+void PeerColors::requestProfile() {
+	if (_profileRequestId) {
+		return;
+	}
+	_profileRequestId = _api.request(MTPhelp_GetPeerProfileColors(
+		MTP_int(_profileHash)
+	)).done([=](const MTPhelp_PeerColors &result) {
+		_profileRequestId = 0;
+		result.match([&](const MTPDhelp_peerColors &data) {
+			_profileHash = data.vhash().v;
+			applyProfile(data);
+		}, [](const MTPDhelp_peerColorsNotModified &) {
+		});
+	}).fail([=] {
+		_profileRequestId = 0;
+	}).send();
+}
+
+std::vector<uint8> PeerColors::suggested() const {
+	return _suggested.current();
+}
+
+rpl::producer<std::vector<uint8>> PeerColors::suggestedValue() const {
+	return _suggested.value();
+}
+
+auto PeerColors::indicesValue() const
+-> rpl::producer<Ui::ColorIndicesCompressed> {
+	return rpl::single(
+		indicesCurrent()
+	) | rpl::then(_colorIndicesChanged.events() | rpl::map([=] {
+		return indicesCurrent();
+	}));
+}
+
+Ui::ColorIndicesCompressed PeerColors::indicesCurrent() const {
+	return _colorIndicesCurrent
+		? *_colorIndicesCurrent
+		: Ui::ColorIndicesCompressed();
+}
+
+const base::flat_map<uint8, int> &PeerColors::requiredLevelsGroup() const {
+	return _requiredLevelsGroup;
+}
+
+const base::flat_map<uint8, int> &PeerColors::requiredLevelsChannel() const {
+	return _requiredLevelsChannel;
+}
+
+int PeerColors::requiredLevelFor(
+		PeerId channel,
+		uint8 index,
+		bool isMegagroup,
+		bool profile) const {
+	if (Data::DecideColorIndex(channel) == index) {
+		return 0;
+	}
+	if (profile) {
+		const auto it = _profileColors.find(index);
+		if (it != end(_profileColors)) {
+			return isMegagroup
+				? it->second.requiredLevelsGroup
+				: it->second.requiredLevelsChannel;
+		}
+		return 1;
+	}
+	const auto &levels = isMegagroup
+		? _requiredLevelsGroup
+		: _requiredLevelsChannel;
+	if (const auto i = levels.find(index); i != end(levels)) {
+		return i->second;
+	}
+	return 1;
+}
+
+void PeerColors::apply(const MTPDhelp_peerColors &data) {
+	auto suggested = std::vector<uint8>();
+	auto colors = std::make_shared<
+		std::array<Ui::ColorIndexData, Ui::kColorIndexCount>>();
+
+	using ParsedColor = std::array<uint32, Ui::kColorPatternsCount>;
+	const auto parseColors = [](const MTPhelp_PeerColorSet &set) {
+		return set.match([&](const MTPDhelp_peerColorSet &data) {
+			auto result = ParsedColor();
+			const auto &list = data.vcolors().v;
+			if (list.empty() || list.size() > Ui::kColorPatternsCount) {
+				LOG(("API Error: Bad count for PeerColorSet.colors: %1"
+					).arg(list.size()));
+				return ParsedColor();
+			}
+			auto fill = result.data();
+			for (const auto &color : list) {
+				*fill++ = (uint32(1) << 24) | uint32(color.v);
+			}
+			return result;
+		}, [](const MTPDhelp_peerColorProfileSet &) {
+			LOG(("API Error: peerColorProfileSet in colors result!"));
+			return ParsedColor();
+		});
+	};
+
+	const auto &list = data.vcolors().v;
+	_requiredLevelsGroup.clear();
+	_requiredLevelsChannel.clear();
+	suggested.reserve(list.size());
+	for (const auto &color : list) {
+		const auto &data = color.data();
+		const auto colorIndexBare = data.vcolor_id().v;
+		if (colorIndexBare < 0 || colorIndexBare >= Ui::kColorIndexCount) {
+			LOG(("API Error: Bad color index: %1").arg(colorIndexBare));
+			continue;
+		}
+		const auto colorIndex = uint8(colorIndexBare);
+		if (const auto min = data.vgroup_min_level()) {
+			_requiredLevelsGroup[colorIndex] = min->v;
+		}
+		if (const auto min = data.vchannel_min_level()) {
+			_requiredLevelsChannel[colorIndex] = min->v;
+		}
+		if (!data.is_hidden()) {
+			suggested.push_back(colorIndex);
+		}
+		if (const auto light = data.vcolors()) {
+			auto &fields = (*colors)[colorIndex];
+			fields.light = parseColors(*light);
+			if (const auto dark = data.vdark_colors()) {
+				fields.dark = parseColors(*dark);
+			} else {
+				fields.dark = fields.light;
+			}
+		}
+	}
+
+	if (!_colorIndicesCurrent) {
+		_colorIndicesCurrent = std::make_unique<Ui::ColorIndicesCompressed>(
+			Ui::ColorIndicesCompressed{ std::move(colors) });
+		_colorIndicesChanged.fire({});
+	} else if (*_colorIndicesCurrent->colors != *colors) {
+		_colorIndicesCurrent->colors = std::move(colors);
+		_colorIndicesChanged.fire({});
+	}
+	_suggested = std::move(suggested);
+}
+
+void PeerColors::applyProfile(const MTPDhelp_peerColors &data) {
+	const auto parseColors = [](const MTPhelp_PeerColorSet &set) {
+		const auto toUint = [](const MTPint &c) {
+			return (uint32(1) << 24) | uint32(c.v);
+		};
+		return set.match([&](const MTPDhelp_peerColorSet &) {
+			LOG(("API Error: peerColorSet in profile colors result!"));
+			return Data::ColorProfileSet();
+		}, [&](const MTPDhelp_peerColorProfileSet &data) {
+			auto set = Data::ColorProfileSet();
+			set.palette.reserve(data.vpalette_colors().v.size());
+			set.bg.reserve(data.vbg_colors().v.size());
+			set.story.reserve(data.vstory_colors().v.size());
+			for (const auto &c : data.vpalette_colors().v) {
+				set.palette.push_back(Ui::ColorFromSerialized(toUint(c)));
+			}
+			for (const auto &c : data.vbg_colors().v) {
+				set.bg.push_back(Ui::ColorFromSerialized(toUint(c)));
+			}
+			for (const auto &c : data.vstory_colors().v) {
+				set.story.push_back(Ui::ColorFromSerialized(toUint(c)));
+			}
+			return set;
+		});
+	};
+
+	auto suggested = std::vector<Data::ColorProfileData>();
+	const auto &list = data.vcolors().v;
+	suggested.reserve(list.size());
+	for (const auto &color : list) {
+		const auto &data = color.data();
+		const auto colorIndexBare = data.vcolor_id().v;
+		if (colorIndexBare < 0 || colorIndexBare >= Ui::kColorIndexCount) {
+			LOG(("API Error: Bad color index: %1").arg(colorIndexBare));
+			continue;
+		}
+		const auto colorIndex = uint8(colorIndexBare);
+		auto result = ProfileColorOption();
+		result.isHidden = data.is_hidden();
+		if (const auto min = data.vgroup_min_level()) {
+			result.requiredLevelsGroup = min->v;
+		}
+		if (const auto min = data.vchannel_min_level()) {
+			result.requiredLevelsChannel = min->v;
+		}
+		if (const auto light = data.vcolors()) {
+			result.data.light = parseColors(*light);
+		}
+		if (const auto dark = data.vdark_colors()) {
+			result.data.dark = parseColors(*dark);
+		}
+		_profileColors[colorIndex] = std::move(result);
+	}
+}
+
+std::optional<Data::ColorProfileSet> PeerColors::colorProfileFor(
+		not_null<PeerData*> peer) const {
+	if (const auto colorProfileIndex = peer->colorProfileIndex()) {
+		return colorProfileFor(*colorProfileIndex);
+	}
+	return std::nullopt;
+}
+
+std::optional<Data::ColorProfileSet> PeerColors::colorProfileFor(
+		uint8 index) const {
+	const auto i = _profileColors.find(index);
+	if (i != end(_profileColors)) {
+		return Window::Theme::IsNightMode()
+			? i->second.data.dark
+			: i->second.data.light;
+	}
+	return std::nullopt;
+}
+
+std::vector<uint8> PeerColors::profileColorIndices() const {
+	auto result = std::vector<uint8>();
+	result.reserve(_profileColors.size());
+	for (const auto &[index, option] : _profileColors) {
+		result.push_back(index);
+	}
+	return result;
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_peer_colors.h

@@ -0,0 +1,80 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "base/timer.h"
+#include "data/data_peer_colors.h"
+#include "mtproto/sender.h"
+
+class ApiWrap;
+
+namespace Ui {
+struct ColorIndicesCompressed;
+} // namespace Ui
+
+namespace Api {
+
+class PeerColors final {
+public:
+	explicit PeerColors(not_null<ApiWrap*> api);
+	~PeerColors();
+
+	[[nodiscard]] std::vector<uint8> suggested() const;
+	[[nodiscard]] rpl::producer<std::vector<uint8>> suggestedValue() const;
+	[[nodiscard]] Ui::ColorIndicesCompressed indicesCurrent() const;
+	[[nodiscard]] auto indicesValue() const
+		-> rpl::producer<Ui::ColorIndicesCompressed>;
+
+	[[nodiscard]] auto requiredLevelsGroup() const
+		-> const base::flat_map<uint8, int> &;
+	[[nodiscard]] auto requiredLevelsChannel() const
+		-> const base::flat_map<uint8, int> &;
+
+	[[nodiscard]] int requiredLevelFor(
+		PeerId channel,
+		uint8 index,
+		bool isMegagroup,
+		bool profile) const;
+
+	[[nodiscard]] std::optional<Data::ColorProfileSet> colorProfileFor(
+		not_null<PeerData*> peer) const;
+	[[nodiscard]] std::optional<Data::ColorProfileSet> colorProfileFor(
+		uint8 index) const;
+
+	[[nodiscard]] std::vector<uint8> profileColorIndices() const;
+
+private:
+	struct ProfileColorOption {
+		Data::ColorProfileData data;
+		int requiredLevelsChannel = 0;
+		int requiredLevelsGroup = 0;
+		bool isHidden = false;
+	};
+
+	void request();
+	void requestProfile();
+	void apply(const MTPDhelp_peerColors &data);
+	void applyProfile(const MTPDhelp_peerColors &data);
+
+	MTP::Sender _api;
+	int32 _hash = 0;
+	int32 _profileHash = 0;
+
+	mtpRequestId _requestId = 0;
+	mtpRequestId _profileRequestId = 0;
+	base::Timer _timer;
+	rpl::variable<std::vector<uint8>> _suggested;
+	base::flat_map<uint8, int> _requiredLevelsGroup;
+	base::flat_map<uint8, int> _requiredLevelsChannel;
+	rpl::event_stream<> _colorIndicesChanged;
+	std::unique_ptr<Ui::ColorIndicesCompressed> _colorIndicesCurrent;
+	base::flat_map<uint8, ProfileColorOption> _profileColors;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_peer_photo.cpp

@@ -0,0 +1,592 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_peer_photo.h"
+
+#include "api/api_updates.h"
+#include "apiwrap.h"
+#include "base/random.h"
+#include "base/unixtime.h"
+#include "data/stickers/data_stickers.h"
+#include "data/data_channel.h"
+#include "data/data_chat.h"
+#include "data/data_document.h"
+#include "data/data_file_origin.h"
+#include "data/data_peer.h"
+#include "data/data_photo.h"
+#include "data/data_session.h"
+#include "data/data_user.h"
+#include "data/data_user_photos.h"
+#include "history/history.h"
+#include "main/main_session.h"
+#include "storage/file_upload.h"
+#include "storage/localimageloader.h"
+#include "storage/storage_user_photos.h"
+
+#include <QtCore/QBuffer>
+
+namespace Api {
+namespace {
+
+constexpr auto kSharedMediaLimit = 100;
+
+[[nodiscard]] std::shared_ptr<FilePrepareResult> PreparePeerPhoto(
+		MTP::DcId dcId,
+		PeerId peerId,
+		QImage &&image) {
+	PreparedPhotoThumbs photoThumbs;
+	QVector<MTPPhotoSize> photoSizes;
+
+	QByteArray jpeg;
+	QBuffer jpegBuffer(&jpeg);
+	image.save(&jpegBuffer, "JPG", 87);
+
+	const auto scaled = [&](int size) {
+		return image.scaled(
+			size,
+			size,
+			Qt::KeepAspectRatio,
+			Qt::SmoothTransformation);
+	};
+	const auto push = [&](
+			const char *type,
+			QImage &&image,
+			QByteArray bytes = QByteArray()) {
+		photoSizes.push_back(MTP_photoSize(
+			MTP_string(type),
+			MTP_int(image.width()),
+			MTP_int(image.height()), MTP_int(0)));
+		photoThumbs.emplace(type[0], PreparedPhotoThumb{
+			.image = std::move(image),
+			.bytes = std::move(bytes)
+		});
+	};
+	push("a", scaled(160));
+	push("b", scaled(320));
+	push("c", std::move(image), jpeg);
+
+	const auto id = base::RandomValue<PhotoId>();
+	const auto photo = MTP_photo(
+		MTP_flags(0),
+		MTP_long(id),
+		MTP_long(0),
+		MTP_bytes(),
+		MTP_int(base::unixtime::now()),
+		MTP_vector<MTPPhotoSize>(photoSizes),
+		MTPVector<MTPVideoSize>(),
+		MTP_int(dcId));
+
+	auto result = MakePreparedFile({
+		.id = id,
+		.type = SendMediaType::Photo,
+	});
+	result->type = SendMediaType::Photo;
+	result->setFileData(jpeg);
+	result->thumbId = id;
+	result->thumbname = "thumb.jpg";
+	result->photo = photo;
+	result->photoThumbs = photoThumbs;
+	return result;
+}
+
+[[nodiscard]] std::optional<MTPVideoSize> PrepareMtpMarkup(
+		not_null<Main::Session*> session,
+		const PeerPhoto::UserPhoto &d) {
+	const auto &documentId = d.markupDocumentId;
+	const auto &colors = d.markupColors;
+	if (!documentId || colors.empty()) {
+		return std::nullopt;
+	}
+	const auto document = session->data().document(documentId);
+	if (const auto sticker = document->sticker()) {
+		if (sticker->isStatic()) {
+			return std::nullopt;
+		}
+		const auto serializeColor = [](const QColor &color) {
+			return (quint32(std::clamp(color.red(), 0, 255)) << 16)
+				| (quint32(std::clamp(color.green(), 0, 255)) << 8)
+				| quint32(std::clamp(color.blue(), 0, 255));
+		};
+
+		auto mtpColors = QVector<MTPint>();
+		mtpColors.reserve(colors.size());
+		ranges::transform(
+			colors,
+			ranges::back_inserter(mtpColors),
+			[&](const QColor &c) { return MTP_int(serializeColor(c)); });
+		if (sticker->setType == Data::StickersType::Emoji) {
+			return MTP_videoSizeEmojiMarkup(
+				MTP_long(document->id),
+				MTP_vector(mtpColors));
+		} else if (sticker->set.id && sticker->set.accessHash) {
+			return MTP_videoSizeStickerMarkup(
+				MTP_inputStickerSetID(
+					MTP_long(sticker->set.id),
+					MTP_long(sticker->set.accessHash)),
+				MTP_long(document->id),
+				MTP_vector(mtpColors));
+		} else if (!sticker->set.shortName.isEmpty()) {
+			return MTP_videoSizeStickerMarkup(
+				MTP_inputStickerSetShortName(
+					MTP_string(sticker->set.shortName)),
+				MTP_long(document->id),
+				MTP_vector(mtpColors));
+		} else {
+			return MTP_videoSizeEmojiMarkup(
+				MTP_long(document->id),
+				MTP_vector(mtpColors));
+		}
+	}
+	return std::nullopt;
+}
+
+} // namespace
+
+PeerPhoto::PeerPhoto(not_null<ApiWrap*> api)
+: _session(&api->session())
+, _api(&api->instance()) {
+	crl::on_main(_session, [=] {
+		// You can't use _session->lifetime() in the constructor,
+		// only queued, because it is not constructed yet.
+		_session->uploader().photoReady(
+		) | rpl::on_next([=](const Storage::UploadedMedia &data) {
+			ready(data.fullId, data.info.file, std::nullopt);
+		}, _session->lifetime());
+	});
+}
+
+void PeerPhoto::upload(
+		not_null<PeerData*> peer,
+		UserPhoto &&photo,
+		Fn<void()> done) {
+	upload(peer, std::move(photo), UploadType::Default, std::move(done));
+}
+
+void PeerPhoto::uploadFallback(not_null<PeerData*> peer, UserPhoto &&photo) {
+	upload(peer, std::move(photo), UploadType::Fallback, nullptr);
+}
+
+void PeerPhoto::updateSelf(
+		not_null<PhotoData*> photo,
+		Data::FileOrigin origin,
+		Fn<void()> done) {
+	const auto send = [=](auto resend) -> void {
+		const auto usedFileReference = photo->fileReference();
+		_api.request(MTPphotos_UpdateProfilePhoto(
+			MTP_flags(0),
+			MTPInputUser(), // bot
+			photo->mtpInput()
+		)).done([=](const MTPphotos_Photo &result) {
+			result.match([&](const MTPDphotos_photo &data) {
+				_session->data().processPhoto(data.vphoto());
+				_session->data().processUsers(data.vusers());
+			});
+			if (done) {
+				done();
+			}
+		}).fail([=](const MTP::Error &error) {
+			if (error.code() == 400
+				&& error.type().startsWith(u"FILE_REFERENCE_"_q)) {
+				photo->session().api().refreshFileReference(origin, [=](
+						const auto &) {
+					if (photo->fileReference() != usedFileReference) {
+						resend(resend);
+					}
+				});
+			}
+		}).send();
+	};
+	send(send);
+}
+
+void PeerPhoto::upload(
+		not_null<PeerData*> peer,
+		UserPhoto &&photo,
+		UploadType type,
+		Fn<void()> done) {
+	peer = peer->migrateToOrMe();
+	const auto mtpMarkup = PrepareMtpMarkup(_session, photo);
+
+	const auto fakeId = FullMsgId(
+		peer->id,
+		_session->data().nextLocalMessageId());
+	const auto already = ranges::find(
+		_uploads,
+		peer,
+		[](const auto &pair) { return pair.second.peer; });
+	if (already != end(_uploads)) {
+		_session->uploader().cancel(already->first);
+		_uploads.erase(already);
+	}
+	_uploads.emplace(
+		fakeId,
+		UploadValue{ peer, type, std::move(done) });
+	if (mtpMarkup) {
+		ready(fakeId, std::nullopt, mtpMarkup);
+	} else {
+		const auto ready = PreparePeerPhoto(
+			_api.instance().mainDcId(),
+			peer->id,
+			base::take(photo.image));
+		_session->uploader().upload(fakeId, ready);
+	}
+}
+
+void PeerPhoto::suggest(not_null<PeerData*> peer, UserPhoto &&photo) {
+	upload(peer, std::move(photo), UploadType::Suggestion, nullptr);
+}
+
+void PeerPhoto::clear(not_null<PhotoData*> photo) {
+	const auto self = _session->user();
+	if (self->userpicPhotoId() == photo->id) {
+		const auto photoId = photo->id;
+		const auto peerId = self->id;
+		_api.request(MTPphotos_UpdateProfilePhoto(
+			MTP_flags(0),
+			MTPInputUser(), // bot
+			MTP_inputPhotoEmpty()
+		)).done([=](const MTPphotos_Photo &result) {
+			self->setPhoto(MTP_userProfilePhotoEmpty());
+			_session->storage().remove(
+				Storage::UserPhotosRemoveOne(peerToUser(peerId), photoId));
+		}).send();
+	} else if (photo->peer && photo->peer->userpicPhotoId() == photo->id) {
+		const auto applier = [=](const MTPUpdates &result) {
+			_session->updates().applyUpdates(result);
+		};
+		if (const auto chat = photo->peer->asChat()) {
+			_api.request(MTPmessages_EditChatPhoto(
+				chat->inputChat(),
+				MTP_inputChatPhotoEmpty()
+			)).done(applier).send();
+		} else if (const auto channel = photo->peer->asChannel()) {
+			_api.request(MTPchannels_EditPhoto(
+				channel->inputChannel(),
+				MTP_inputChatPhotoEmpty()
+			)).done(applier).send();
+		}
+	} else {
+		const auto fallbackPhotoId = SyncUserFallbackPhotoViewer(self);
+		if (fallbackPhotoId && (*fallbackPhotoId) == photo->id) {
+			_api.request(MTPphotos_UpdateProfilePhoto(
+				MTP_flags(MTPphotos_UpdateProfilePhoto::Flag::f_fallback),
+				MTPInputUser(), // bot
+				MTP_inputPhotoEmpty()
+			)).send();
+			_session->storage().add(Storage::UserPhotosSetBack(
+				peerToUser(self->id),
+				PhotoId()));
+		} else {
+			_api.request(MTPphotos_DeletePhotos(
+				MTP_vector<MTPInputPhoto>(1, photo->mtpInput())
+			)).send();
+			_session->storage().remove(Storage::UserPhotosRemoveOne(
+				peerToUser(self->id),
+				photo->id));
+		}
+	}
+}
+
+void PeerPhoto::clearPersonal(not_null<UserData*> user) {
+	_api.request(MTPphotos_UploadContactProfilePhoto(
+		MTP_flags(MTPphotos_UploadContactProfilePhoto::Flag::f_save),
+		user->inputUser(),
+		MTPInputFile(),
+		MTPInputFile(), // video
+		MTPdouble(), // video_start_ts
+		MTPVideoSize() // video_emoji_markup
+	)).done([=](const MTPphotos_Photo &result) {
+		result.match([&](const MTPDphotos_photo &data) {
+			_session->data().processPhoto(data.vphoto());
+			_session->data().processUsers(data.vusers());
+		});
+	}).send();
+
+	if (!user->userpicPhotoUnknown() && user->hasPersonalPhoto()) {
+		_session->storage().remove(Storage::UserPhotosRemoveOne(
+			peerToUser(user->id),
+			user->userpicPhotoId()));
+	}
+}
+
+void PeerPhoto::set(not_null<PeerData*> peer, not_null<PhotoData*> photo) {
+	if (peer->userpicPhotoId() == photo->id) {
+		return;
+	}
+	if (peer == _session->user()) {
+		const auto photoId = photo->id;
+		const auto peerId = peer->id;
+		_api.request(MTPphotos_UpdateProfilePhoto(
+			MTP_flags(0),
+			MTPInputUser(), // bot
+			photo->mtpInput()
+		)).done([=](const MTPphotos_Photo &result) {
+			const auto newPhoto = _session->data().processPhoto(
+				result.data().vphoto());
+			_session->data().processUsers(result.data().vusers());
+			_session->storage().replace(Storage::UserPhotosReplace(
+				peerToUser(peerId),
+				photoId,
+				newPhoto->id));
+		}).send();
+	} else {
+		const auto applier = [=](const MTPUpdates &result) {
+			_session->updates().applyUpdates(result);
+		};
+		if (const auto chat = peer->asChat()) {
+			_api.request(MTPmessages_EditChatPhoto(
+				chat->inputChat(),
+				MTP_inputChatPhoto(photo->mtpInput())
+			)).done(applier).send();
+		} else if (const auto channel = peer->asChannel()) {
+			_api.request(MTPchannels_EditPhoto(
+				channel->inputChannel(),
+				MTP_inputChatPhoto(photo->mtpInput())
+			)).done(applier).send();
+		}
+	}
+}
+
+void PeerPhoto::ready(
+		const FullMsgId &msgId,
+		std::optional<MTPInputFile> file,
+		std::optional<MTPVideoSize> videoSize) {
+	const auto maybeUploadValue = _uploads.take(msgId);
+	if (!maybeUploadValue) {
+		return;
+	}
+	const auto peer = maybeUploadValue->peer;
+	const auto type = maybeUploadValue->type;
+	const auto done = maybeUploadValue->done;
+	const auto applier = [=](const MTPUpdates &result) {
+		_session->updates().applyUpdates(result);
+		if (done) {
+			done();
+		}
+	};
+	const auto botUserInput = [&] {
+		const auto user = peer->asUser();
+		return (user && user->botInfo && user->botInfo->canEditInformation)
+			? std::make_optional<MTPInputUser>(user->inputUser())
+			: std::nullopt;
+	}();
+	if (peer->isSelf() || botUserInput) {
+		using Flag = MTPphotos_UploadProfilePhoto::Flag;
+		const auto none = MTPphotos_UploadProfilePhoto::Flags(0);
+		_api.request(MTPphotos_UploadProfilePhoto(
+			MTP_flags((file ? Flag::f_file : none)
+				| (botUserInput ? Flag::f_bot : none)
+				| (videoSize ? Flag::f_video_emoji_markup : none)
+				| ((type == UploadType::Fallback) ? Flag::f_fallback : none)),
+			botUserInput ? (*botUserInput) : MTPInputUser(), // bot
+			file ? (*file) : MTPInputFile(),
+			MTPInputFile(), // video
+			MTPdouble(), // video_start_ts
+			videoSize ? (*videoSize) : MTPVideoSize() // video_emoji_markup
+		)).done([=](const MTPphotos_Photo &result) {
+			const auto photoId = _session->data().processPhoto(
+				result.data().vphoto())->id;
+			_session->data().processUsers(result.data().vusers());
+			if (type == UploadType::Fallback) {
+				_session->storage().add(Storage::UserPhotosSetBack(
+					peerToUser(peer->id),
+					photoId));
+			} else {
+				_session->storage().add(Storage::UserPhotosAddNew(
+					peerToUser(peer->id),
+					photoId));
+			}
+			if (done) {
+				done();
+			}
+		}).send();
+	} else if (const auto chat = peer->asChat()) {
+		const auto history = _session->data().history(chat);
+		using Flag = MTPDinputChatUploadedPhoto::Flag;
+		const auto none = MTPDinputChatUploadedPhoto::Flags(0);
+		history->sendRequestId = _api.request(MTPmessages_EditChatPhoto(
+			chat->inputChat(),
+			MTP_inputChatUploadedPhoto(
+				MTP_flags((file ? Flag::f_file : none)
+					| (videoSize ? Flag::f_video_emoji_markup : none)),
+				file ? (*file) : MTPInputFile(),
+				MTPInputFile(), // video
+				MTPdouble(), // video_start_ts
+				videoSize ? (*videoSize) : MTPVideoSize()) // video_emoji_markup
+		)).done(applier).afterRequest(history->sendRequestId).send();
+	} else if (const auto channel = peer->asChannel()) {
+		using Flag = MTPDinputChatUploadedPhoto::Flag;
+		const auto none = MTPDinputChatUploadedPhoto::Flags(0);
+		const auto history = _session->data().history(channel);
+		history->sendRequestId = _api.request(MTPchannels_EditPhoto(
+			channel->inputChannel(),
+			MTP_inputChatUploadedPhoto(
+				MTP_flags((file ? Flag::f_file : none)
+					| (videoSize ? Flag::f_video_emoji_markup : none)),
+				file ? (*file) : MTPInputFile(),
+				MTPInputFile(), // video
+				MTPdouble(), // video_start_ts
+				videoSize ? (*videoSize) : MTPVideoSize()) // video_emoji_markup
+		)).done(applier).afterRequest(history->sendRequestId).send();
+	} else if (const auto user = peer->asUser()) {
+		using Flag = MTPphotos_UploadContactProfilePhoto::Flag;
+		const auto none = MTPphotos_UploadContactProfilePhoto::Flags(0);
+		_api.request(MTPphotos_UploadContactProfilePhoto(
+			MTP_flags((file ? Flag::f_file : none)
+				| (videoSize ? Flag::f_video_emoji_markup : none)
+				| ((type == UploadType::Suggestion)
+					? Flag::f_suggest
+					: Flag::f_save)),
+			user->inputUser(),
+			file ? (*file) : MTPInputFile(),
+			MTPInputFile(), // video
+			MTPdouble(), // video_start_ts
+			videoSize ? (*videoSize) : MTPVideoSize() // video_emoji_markup
+		)).done([=](const MTPphotos_Photo &result) {
+			result.match([&](const MTPDphotos_photo &data) {
+				_session->data().processPhoto(data.vphoto());
+				_session->data().processUsers(data.vusers());
+			});
+			if (type != UploadType::Suggestion) {
+				user->updateFullForced();
+			}
+			if (done) {
+				done();
+			}
+		}).send();
+	}
+}
+
+void PeerPhoto::requestUserPhotos(
+		not_null<UserData*> user,
+		UserPhotoId afterId) {
+	if (_userPhotosRequests.contains(user)) {
+		return;
+	}
+
+	const auto requestId = _api.request(MTPphotos_GetUserPhotos(
+		user->inputUser(),
+		MTP_int(0),
+		MTP_long(afterId),
+		MTP_int(kSharedMediaLimit)
+	)).done([this, user](const MTPphotos_Photos &result) {
+		_userPhotosRequests.remove(user);
+
+		auto fullCount = result.match([](const MTPDphotos_photos &d) {
+			return int(d.vphotos().v.size());
+		}, [](const MTPDphotos_photosSlice &d) {
+			return d.vcount().v;
+		});
+
+		auto &owner = _session->data();
+		auto photoIds = result.match([&](const auto &data) {
+			owner.processUsers(data.vusers());
+
+			auto photoIds = std::vector<PhotoId>();
+			photoIds.reserve(data.vphotos().v.size());
+
+			for (const auto &single : data.vphotos().v) {
+				const auto photo = owner.processPhoto(single);
+				if (!photo->isNull()) {
+					photoIds.push_back(photo->id);
+				}
+			}
+			return photoIds;
+		});
+		if (!user->userpicPhotoUnknown() && user->hasPersonalPhoto()) {
+			const auto photo = owner.photo(user->userpicPhotoId());
+			if (!photo->isNull()) {
+				++fullCount;
+				photoIds.insert(begin(photoIds), photo->id);
+			}
+		}
+
+		_session->storage().add(Storage::UserPhotosAddSlice(
+			peerToUser(user->id),
+			std::move(photoIds),
+			fullCount
+		));
+	}).fail([this, user] {
+		_userPhotosRequests.remove(user);
+	}).send();
+	_userPhotosRequests.emplace(user, requestId);
+}
+
+auto PeerPhoto::emojiList(EmojiListType type) -> EmojiListData & {
+	switch (type) {
+	case EmojiListType::Profile: return _profileEmojiList;
+	case EmojiListType::Group: return _groupEmojiList;
+	case EmojiListType::Background: return _backgroundEmojiList;
+	case EmojiListType::NoChannelStatus: return _noChannelStatusEmojiList;
+	}
+	Unexpected("Type in PeerPhoto::emojiList.");
+}
+
+auto PeerPhoto::emojiList(EmojiListType type) const
+-> const EmojiListData & {
+	return const_cast<PeerPhoto*>(this)->emojiList(type);
+}
+
+void PeerPhoto::requestEmojiList(EmojiListType type) {
+	auto &list = emojiList(type);
+	if (list.requestId) {
+		return;
+	}
+	const auto send = [&](auto &&request) {
+		return _api.request(
+			std::move(request)
+		).done([=](const MTPEmojiList &result) {
+			auto &list = emojiList(type);
+			list.requestId = 0;
+			result.match([](const MTPDemojiListNotModified &data) {
+			}, [&](const MTPDemojiList &data) {
+				list.list = ranges::views::all(
+					data.vdocument_id().v
+				) | ranges::views::transform(
+					&MTPlong::v
+				) | ranges::to_vector;
+			});
+		}).fail([=] {
+			emojiList(type).requestId = 0;
+		}).send();
+	};
+	list.requestId = (type == EmojiListType::Profile)
+		? send(MTPaccount_GetDefaultProfilePhotoEmojis())
+		: (type == EmojiListType::Group)
+		? send(MTPaccount_GetDefaultGroupPhotoEmojis())
+		: (type == EmojiListType::NoChannelStatus)
+		? send(MTPaccount_GetChannelRestrictedStatusEmojis())
+		: send(MTPaccount_GetDefaultBackgroundEmojis());
+}
+
+rpl::producer<PeerPhoto::EmojiList> PeerPhoto::emojiListValue(
+		EmojiListType type) {
+	auto &list = emojiList(type);
+	if (list.list.current().empty() && !list.requestId) {
+		requestEmojiList(type);
+	}
+	return list.list.value();
+}
+
+// Non-personal photo in case a personal photo is set.
+void PeerPhoto::registerNonPersonalPhoto(
+		not_null<UserData*> user,
+		not_null<PhotoData*> photo) {
+	_nonPersonalPhotos.emplace_or_assign(user, photo);
+}
+
+void PeerPhoto::unregisterNonPersonalPhoto(not_null<UserData*> user) {
+	_nonPersonalPhotos.erase(user);
+}
+
+PhotoData *PeerPhoto::nonPersonalPhoto(
+		not_null<UserData*> user) const {
+	const auto i = _nonPersonalPhotos.find(user);
+	return (i != end(_nonPersonalPhotos)) ? i->second.get() : nullptr;
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_peer_photo.h

@@ -0,0 +1,120 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "mtproto/sender.h"
+
+class ApiWrap;
+class PeerData;
+class UserData;
+
+namespace Data {
+struct FileOrigin;
+} // namespace Data
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+class PeerPhoto final {
+public:
+	using UserPhotoId = PhotoId;
+	explicit PeerPhoto(not_null<ApiWrap*> api);
+
+	enum class EmojiListType {
+		Profile,
+		Group,
+		Background,
+		NoChannelStatus,
+	};
+
+	struct UserPhoto {
+		QImage image;
+		DocumentId markupDocumentId = 0;
+		std::vector<QColor> markupColors;
+	};
+
+	void upload(
+		not_null<PeerData*> peer,
+		UserPhoto &&photo,
+		Fn<void()> done = nullptr);
+	void uploadFallback(not_null<PeerData*> peer, UserPhoto &&photo);
+	void updateSelf(
+		not_null<PhotoData*> photo,
+		Data::FileOrigin origin,
+		Fn<void()> done = nullptr);
+	void suggest(not_null<PeerData*> peer, UserPhoto &&photo);
+	void clear(not_null<PhotoData*> photo);
+	void clearPersonal(not_null<UserData*> user);
+	void set(not_null<PeerData*> peer, not_null<PhotoData*> photo);
+
+	void requestUserPhotos(not_null<UserData*> user, UserPhotoId afterId);
+
+	void requestEmojiList(EmojiListType type);
+	using EmojiList = std::vector<DocumentId>;
+	[[nodiscard]] rpl::producer<EmojiList> emojiListValue(EmojiListType type);
+
+	// Non-personal photo in case a personal photo is set.
+	void registerNonPersonalPhoto(
+		not_null<UserData*> user,
+		not_null<PhotoData*> photo);
+	void unregisterNonPersonalPhoto(not_null<UserData*> user);
+	[[nodiscard]] PhotoData *nonPersonalPhoto(
+		not_null<UserData*> user) const;
+
+private:
+	enum class UploadType {
+		Default,
+		Suggestion,
+		Fallback,
+	};
+	struct EmojiListData {
+		rpl::variable<EmojiList> list;
+		mtpRequestId requestId = 0;
+	};
+
+	void ready(
+		const FullMsgId &msgId,
+		std::optional<MTPInputFile> file,
+		std::optional<MTPVideoSize> videoSize);
+	void upload(
+		not_null<PeerData*> peer,
+		UserPhoto &&photo,
+		UploadType type,
+		Fn<void()> done);
+
+	[[nodiscard]] EmojiListData &emojiList(EmojiListType type);
+	[[nodiscard]] const EmojiListData &emojiList(EmojiListType type) const;
+
+	const not_null<Main::Session*> _session;
+	MTP::Sender _api;
+
+	struct UploadValue {
+		not_null<PeerData*> peer;
+		UploadType type = UploadType::Default;
+		Fn<void()> done;
+	};
+
+	base::flat_map<FullMsgId, UploadValue> _uploads;
+
+	base::flat_map<not_null<UserData*>, mtpRequestId> _userPhotosRequests;
+
+	base::flat_map<
+		not_null<UserData*>,
+		not_null<PhotoData*>> _nonPersonalPhotos;
+
+	EmojiListData _profileEmojiList;
+	EmojiListData _groupEmojiList;
+	EmojiListData _backgroundEmojiList;
+	EmojiListData _noChannelStatusEmojiList;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_peer_search.cpp

@@ -0,0 +1,170 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_peer_search.h"
+
+#include "api/api_single_message_search.h"
+#include "apiwrap.h"
+#include "data/data_session.h"
+#include "dialogs/ui/chat_search_in.h" // IsHashOrCashtagSearchQuery
+#include "main/main_session.h"
+
+namespace Api {
+namespace {
+
+constexpr auto kMinSponsoredQueryLength = 4;
+
+} // namespace
+
+PeerSearch::PeerSearch(not_null<Main::Session*> session, Type type)
+: _session(session)
+, _type(type) {
+}
+
+PeerSearch::~PeerSearch() {
+	clear();
+}
+
+void PeerSearch::request(
+		const QString &query,
+		Fn<void(PeerSearchResult)> callback,
+		RequestType type) {
+	using namespace Dialogs;
+	_query = Api::ConvertPeerSearchQuery(query);
+	_callback = callback;
+	if (_query.isEmpty()
+		|| IsHashOrCashtagSearchQuery(_query) != HashOrCashtag::None) {
+		finish(PeerSearchResult{});
+		return;
+	}
+	auto &cache = _cache[_query];
+	if (cache.peersReady && cache.sponsoredReady) {
+		finish(cache.result);
+		return;
+	} else if (type == RequestType::CacheOnly) {
+		_callback = nullptr;
+		return;
+	} else if (cache.requested) {
+		return;
+	}
+	cache.requested = true;
+	cache.result.query = _query;
+	if (_query.size() < kMinSponsoredQueryLength) {
+		cache.sponsoredReady = true;
+	} else if (_type == Type::WithSponsored) {
+		requestSponsored();
+	}
+	requestPeers();
+}
+
+void PeerSearch::requestPeers() {
+	const auto requestId = _session->api().request(MTPcontacts_Search(
+		MTP_string(_query),
+		MTP_int(SearchPeopleLimit)
+	)).done([=](const MTPcontacts_Found &result, mtpRequestId requestId) {
+		const auto &data = result.data();
+		_session->data().processUsers(data.vusers());
+		_session->data().processChats(data.vchats());
+		auto parsed = PeerSearchResult();
+		parsed.my.reserve(data.vmy_results().v.size());
+		for (const auto &id : data.vmy_results().v) {
+			const auto peerId = peerFromMTP(id);
+			parsed.my.push_back(_session->data().peer(peerId));
+		}
+		parsed.peers.reserve(data.vresults().v.size());
+		for (const auto &id : data.vresults().v) {
+			const auto peerId = peerFromMTP(id);
+			parsed.peers.push_back(_session->data().peer(peerId));
+		}
+		finishPeers(requestId, std::move(parsed));
+	}).fail([=](const MTP::Error &error, mtpRequestId requestId) {
+		finishPeers(requestId, PeerSearchResult{});
+	}).send();
+	_peerRequests.emplace(requestId, _query);
+}
+
+void PeerSearch::requestSponsored() {
+	const auto requestId = _session->api().request(
+		MTPcontacts_GetSponsoredPeers(MTP_string(_query))
+	).done([=](
+			const MTPcontacts_SponsoredPeers &result,
+			mtpRequestId requestId) {
+		result.match([&](const MTPDcontacts_sponsoredPeersEmpty &) {
+			finishSponsored(requestId, PeerSearchResult{});
+		}, [&](const MTPDcontacts_sponsoredPeers &data) {
+			_session->data().processUsers(data.vusers());
+			_session->data().processChats(data.vchats());
+			auto parsed = PeerSearchResult();
+			parsed.sponsored.reserve(data.vpeers().v.size());
+			for (const auto &peer : data.vpeers().v) {
+				const auto &data = peer.data();
+				const auto peerId = peerFromMTP(data.vpeer());
+				parsed.sponsored.push_back({
+					.peer = _session->data().peer(peerId),
+					.randomId = data.vrandom_id().v,
+					.sponsorInfo = TextWithEntities::Simple(
+						qs(data.vsponsor_info().value_or_empty())),
+					.additionalInfo = TextWithEntities::Simple(
+						qs(data.vadditional_info().value_or_empty())),
+				});
+			}
+			finishSponsored(requestId, std::move(parsed));
+		});
+	}).fail([=](const MTP::Error &error, mtpRequestId requestId) {
+		finishSponsored(requestId, PeerSearchResult{});
+	}).send();
+	_sponsoredRequests.emplace(requestId, _query);
+}
+
+void PeerSearch::finishPeers(
+		mtpRequestId requestId,
+		PeerSearchResult result) {
+	const auto query = _peerRequests.take(requestId);
+	Assert(query.has_value());
+
+	auto &cache = _cache[*query];
+	cache.peersReady = true;
+	cache.result.my = std::move(result.my);
+	cache.result.peers = std::move(result.peers);
+	if (cache.sponsoredReady && _query == *query) {
+		finish(cache.result);
+	}
+}
+
+void PeerSearch::finishSponsored(
+		mtpRequestId requestId,
+		PeerSearchResult result) {
+	const auto query = _sponsoredRequests.take(requestId);
+	Assert(query.has_value());
+
+	auto &cache = _cache[*query];
+	cache.sponsoredReady = true;
+	cache.result.sponsored = std::move(result.sponsored);
+	if (cache.peersReady && _query == *query) {
+		finish(cache.result);
+	}
+}
+
+void PeerSearch::finish(PeerSearchResult result) {
+	if (const auto onstack = base::take(_callback)) {
+		onstack(std::move(result));
+	}
+}
+
+void PeerSearch::clear() {
+	_query = QString();
+	_callback = nullptr;
+	_cache.clear();
+	for (const auto &[requestId, query] : base::take(_peerRequests)) {
+		_session->api().request(requestId).cancel();
+	}
+	for (const auto &[requestId, query] : base::take(_sponsoredRequests)) {
+		_session->api().request(requestId).cancel();
+	}
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_peer_search.h

@@ -0,0 +1,76 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+struct SponsoredSearchResult {
+    not_null<PeerData*> peer;
+    QByteArray randomId;
+    TextWithEntities sponsorInfo;
+    TextWithEntities additionalInfo;
+};
+
+struct PeerSearchResult {
+    QString query;
+    std::vector<not_null<PeerData*>> my;
+    std::vector<not_null<PeerData*>> peers;
+    std::vector<SponsoredSearchResult> sponsored;
+};
+
+class PeerSearch final {
+public:
+    enum class Type {
+        WithSponsored,
+        JustPeers,
+    };
+    PeerSearch(not_null<Main::Session*> session, Type type);
+    ~PeerSearch();
+
+    enum class RequestType {
+        CacheOnly,
+        CacheOrRemote,
+    };
+    void request(
+        const QString &query,
+        Fn<void(PeerSearchResult)> callback,
+        RequestType type = RequestType::CacheOrRemote);
+    void clear();
+
+private:
+    struct CacheEntry {
+        PeerSearchResult result;
+        bool requested = false;
+        bool peersReady = false;
+        bool sponsoredReady = false;
+    };
+
+    void requestPeers();
+    void requestSponsored();
+
+	void finish(PeerSearchResult result);
+	void finishPeers(mtpRequestId requestId, PeerSearchResult result);
+    void finishSponsored(mtpRequestId requestId, PeerSearchResult result);
+
+    const not_null<Main::Session*> _session;
+    const Type _type;
+
+    QString _query;
+    Fn<void(PeerSearchResult)> _callback;
+
+	base::flat_map<QString, CacheEntry> _cache;
+	base::flat_map<mtpRequestId, QString> _peerRequests;
+	base::flat_map<mtpRequestId, QString> _sponsoredRequests;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_polls.cpp

@@ -0,0 +1,226 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_polls.h"
+
+#include "api/api_common.h"
+#include "api/api_updates.h"
+#include "apiwrap.h"
+#include "base/random.h"
+#include "data/business/data_shortcut_messages.h"
+#include "data/data_changes.h"
+#include "data/data_histories.h"
+#include "data/data_poll.h"
+#include "data/data_session.h"
+#include "history/history.h"
+#include "history/history_item.h"
+#include "history/history_item_helpers.h" // ShouldSendSilent
+#include "main/main_session.h"
+
+namespace Api {
+
+Polls::Polls(not_null<ApiWrap*> api)
+: _session(&api->session())
+, _api(&api->instance()) {
+}
+
+void Polls::create(
+		const PollData &data,
+		SendAction action,
+		Fn<void()> done,
+		Fn<void()> fail) {
+	_session->api().sendAction(action);
+
+	const auto history = action.history;
+	const auto peer = history->peer;
+	const auto topicRootId = action.replyTo.messageId
+		? action.replyTo.topicRootId
+		: 0;
+	const auto monoforumPeerId = action.replyTo.monoforumPeerId;
+	auto sendFlags = MTPmessages_SendMedia::Flags(0);
+	if (action.replyTo) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_reply_to;
+	}
+	const auto clearCloudDraft = action.clearDraft;
+	if (clearCloudDraft) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_clear_draft;
+		history->clearLocalDraft(topicRootId, monoforumPeerId);
+		history->clearCloudDraft(topicRootId, monoforumPeerId);
+		history->startSavingCloudDraft(topicRootId, monoforumPeerId);
+	}
+	const auto silentPost = ShouldSendSilent(peer, action.options);
+	const auto starsPaid = std::min(
+		peer->starsPerMessageChecked(),
+		action.options.starsApproved);
+	if (silentPost) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_silent;
+	}
+	if (action.options.scheduled) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_schedule_date;
+		if (action.options.scheduleRepeatPeriod) {
+			sendFlags |= MTPmessages_SendMedia::Flag::f_schedule_repeat_period;
+		}
+	}
+	if (action.options.shortcutId) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_quick_reply_shortcut;
+	}
+	if (action.options.effectId) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_effect;
+	}
+	if (action.options.suggest) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_suggested_post;
+	}
+	if (starsPaid) {
+		action.options.starsApproved -= starsPaid;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_allow_paid_stars;
+	}
+	const auto sendAs = action.options.sendAs;
+	if (sendAs) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_send_as;
+	}
+	auto &histories = history->owner().histories();
+	const auto randomId = base::RandomValue<uint64>();
+	histories.sendPreparedMessage(
+		history,
+		action.replyTo,
+		randomId,
+		Data::Histories::PrepareMessage<MTPmessages_SendMedia>(
+			MTP_flags(sendFlags),
+			peer->input(),
+			Data::Histories::ReplyToPlaceholder(),
+			PollDataToInputMedia(&data),
+			MTP_string(),
+			MTP_long(randomId),
+			MTPReplyMarkup(),
+			MTPVector<MTPMessageEntity>(),
+			MTP_int(action.options.scheduled),
+			MTP_int(action.options.scheduleRepeatPeriod),
+			(sendAs ? sendAs->input() : MTP_inputPeerEmpty()),
+			Data::ShortcutIdToMTP(_session, action.options.shortcutId),
+			MTP_long(action.options.effectId),
+			MTP_long(starsPaid),
+			SuggestToMTP(action.options.suggest)
+		), [=](const MTPUpdates &result, const MTP::Response &response) {
+		if (clearCloudDraft) {
+			history->finishSavingCloudDraft(
+				topicRootId,
+				monoforumPeerId,
+				UnixtimeFromMsgId(response.outerMsgId));
+		}
+		_session->changes().historyUpdated(
+			history,
+			(action.options.scheduled
+				? Data::HistoryUpdate::Flag::ScheduledSent
+				: Data::HistoryUpdate::Flag::MessageSent));
+		done();
+	}, [=](const MTP::Error &error, const MTP::Response &response) {
+		if (clearCloudDraft) {
+			history->finishSavingCloudDraft(
+				topicRootId,
+				monoforumPeerId,
+				UnixtimeFromMsgId(response.outerMsgId));
+		}
+		fail();
+	});
+}
+
+void Polls::sendVotes(
+		FullMsgId itemId,
+		const std::vector<QByteArray> &options) {
+	if (_pollVotesRequestIds.contains(itemId)) {
+		return;
+	}
+	const auto item = _session->data().message(itemId);
+	const auto media = item ? item->media() : nullptr;
+	const auto poll = media ? media->poll() : nullptr;
+	if (!item) {
+		return;
+	}
+
+	const auto showSending = poll && !options.empty();
+	const auto hideSending = [=] {
+		if (showSending) {
+			if (const auto item = _session->data().message(itemId)) {
+				poll->sendingVotes.clear();
+				_session->data().requestItemRepaint(item);
+			}
+		}
+	};
+	if (showSending) {
+		poll->sendingVotes = options;
+		_session->data().requestItemRepaint(item);
+	}
+
+	auto prepared = QVector<MTPbytes>();
+	prepared.reserve(options.size());
+	ranges::transform(
+		options,
+		ranges::back_inserter(prepared),
+		[](const QByteArray &option) { return MTP_bytes(option); });
+	const auto requestId = _api.request(MTPmessages_SendVote(
+		item->history()->peer->input(),
+		MTP_int(item->id),
+		MTP_vector<MTPbytes>(prepared)
+	)).done([=](const MTPUpdates &result) {
+		_pollVotesRequestIds.erase(itemId);
+		hideSending();
+		_session->updates().applyUpdates(result);
+	}).fail([=] {
+		_pollVotesRequestIds.erase(itemId);
+		hideSending();
+	}).send();
+	_pollVotesRequestIds.emplace(itemId, requestId);
+}
+
+void Polls::close(not_null<HistoryItem*> item) {
+	const auto itemId = item->fullId();
+	if (_pollCloseRequestIds.contains(itemId)) {
+		return;
+	}
+	const auto media = item ? item->media() : nullptr;
+	const auto poll = media ? media->poll() : nullptr;
+	if (!poll) {
+		return;
+	}
+	const auto requestId = _api.request(MTPmessages_EditMessage(
+		MTP_flags(MTPmessages_EditMessage::Flag::f_media),
+		item->history()->peer->input(),
+		MTP_int(item->id),
+		MTPstring(),
+		PollDataToInputMedia(poll, true),
+		MTPReplyMarkup(),
+		MTPVector<MTPMessageEntity>(),
+		MTP_int(0), // schedule_date
+		MTP_int(0), // schedule_repeat_period
+		MTPint() // quick_reply_shortcut_id
+	)).done([=](const MTPUpdates &result) {
+		_pollCloseRequestIds.erase(itemId);
+		_session->updates().applyUpdates(result);
+	}).fail([=] {
+		_pollCloseRequestIds.erase(itemId);
+	}).send();
+	_pollCloseRequestIds.emplace(itemId, requestId);
+}
+
+void Polls::reloadResults(not_null<HistoryItem*> item) {
+	const auto itemId = item->fullId();
+	if (!item->isRegular() || _pollReloadRequestIds.contains(itemId)) {
+		return;
+	}
+	const auto requestId = _api.request(MTPmessages_GetPollResults(
+		item->history()->peer->input(),
+		MTP_int(item->id)
+	)).done([=](const MTPUpdates &result) {
+		_pollReloadRequestIds.erase(itemId);
+		_session->updates().applyUpdates(result);
+	}).fail([=] {
+		_pollReloadRequestIds.erase(itemId);
+	}).send();
+	_pollReloadRequestIds.emplace(itemId, requestId);
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_polls.h

@@ -0,0 +1,49 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "mtproto/sender.h"
+
+class ApiWrap;
+class HistoryItem;
+struct PollData;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+struct SendAction;
+
+class Polls final {
+public:
+	explicit Polls(not_null<ApiWrap*> api);
+
+	void create(
+		const PollData &data,
+		SendAction action,
+		Fn<void()> done,
+		Fn<void()> fail);
+	void sendVotes(
+		FullMsgId itemId,
+		const std::vector<QByteArray> &options);
+	void close(not_null<HistoryItem*> item);
+	void reloadResults(not_null<HistoryItem*> item);
+
+private:
+	const not_null<Main::Session*> _session;
+	MTP::Sender _api;
+
+	base::flat_map<FullMsgId, mtpRequestId> _pollVotesRequestIds;
+	base::flat_map<FullMsgId, mtpRequestId> _pollCloseRequestIds;
+	base::flat_map<FullMsgId, mtpRequestId> _pollReloadRequestIds;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_premium.h

@@ -0,0 +1,289 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "data/data_premium_subscription_option.h"
+#include "data/data_star_gift.h"
+#include "mtproto/sender.h"
+
+class History;
+class ApiWrap;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Payments {
+struct InvoicePremiumGiftCode;
+} // namespace Payments
+
+namespace Api {
+
+struct GiftCode {
+	PeerId from = 0;
+	PeerId to = 0;
+	MsgId giveawayId = 0;
+	TimeId date = 0;
+	TimeId used = 0; // 0 if not used.
+	int days = 0;
+	bool giveaway = false;
+
+	explicit operator bool() const {
+		return days != 0;
+	}
+
+	friend inline bool operator==(
+		const GiftCode&,
+		const GiftCode&) = default;
+};
+
+enum class GiveawayState {
+	Invalid,
+	Running,
+	Preparing,
+	Finished,
+	Refunded,
+};
+
+struct GiveawayInfo {
+	QString giftCode;
+	QString disallowedCountry;
+	ChannelId adminChannelId = 0;
+	GiveawayState state = GiveawayState::Invalid;
+	TimeId tooEarlyDate = 0;
+	TimeId finishDate = 0;
+	TimeId startDate = 0;
+	uint64 credits = 0;
+	int winnersCount = 0;
+	int activatedCount = 0;
+	bool participating = false;
+
+	explicit operator bool() const {
+		return state != GiveawayState::Invalid;
+	}
+};
+
+struct GiftOptionData {
+	int64 cost = 0;
+	QString currency;
+	int months = 0;
+};
+
+class Premium final {
+public:
+	explicit Premium(not_null<ApiWrap*> api);
+
+	void reload();
+	[[nodiscard]] rpl::producer<TextWithEntities> statusTextValue() const;
+
+	[[nodiscard]] auto videos() const
+		-> const base::flat_map<QString, not_null<DocumentData*>> &;
+	[[nodiscard]] rpl::producer<> videosUpdated() const;
+
+	[[nodiscard]] auto stickers() const
+		-> const std::vector<not_null<DocumentData*>> &;
+	[[nodiscard]] rpl::producer<> stickersUpdated() const;
+
+	[[nodiscard]] auto cloudSet() const
+		-> const std::vector<not_null<DocumentData*>> &;
+	[[nodiscard]] rpl::producer<> cloudSetUpdated() const;
+
+	[[nodiscard]] auto helloStickers() const
+		-> const std::vector<not_null<DocumentData*>> &;
+	[[nodiscard]] rpl::producer<> helloStickersUpdated() const;
+
+	[[nodiscard]] int64 monthlyAmount() const;
+	[[nodiscard]] QString monthlyCurrency() const;
+
+	void checkGiftCode(
+		const QString &slug,
+		Fn<void(GiftCode)> done);
+	GiftCode updateGiftCode(const QString &slug, const GiftCode &code);
+	[[nodiscard]] rpl::producer<GiftCode> giftCodeValue(
+		const QString &slug) const;
+	void applyGiftCode(const QString &slug, Fn<void(QString)> done);
+
+	void resolveGiveawayInfo(
+		not_null<PeerData*> peer,
+		MsgId messageId,
+		Fn<void(GiveawayInfo)> done);
+
+	[[nodiscard]] auto subscriptionOptions() const
+		-> const Data::PremiumSubscriptionOptions &;
+
+	[[nodiscard]] auto someMessageMoneyRestrictionsResolved() const
+		-> rpl::producer<>;
+	void resolveMessageMoneyRestrictions(not_null<UserData*> user);
+
+private:
+	void reloadPromo();
+	void reloadStickers();
+	void reloadCloudSet();
+	void reloadHelloStickers();
+	void requestPremiumRequiredSlice();
+
+	const not_null<Main::Session*> _session;
+	MTP::Sender _api;
+
+	mtpRequestId _promoRequestId = 0;
+	std::optional<TextWithEntities> _statusText;
+	rpl::event_stream<TextWithEntities> _statusTextUpdates;
+
+	base::flat_map<QString, not_null<DocumentData*>> _videos;
+	rpl::event_stream<> _videosUpdated;
+
+	mtpRequestId _stickersRequestId = 0;
+	uint64 _stickersHash = 0;
+	std::vector<not_null<DocumentData*>> _stickers;
+	rpl::event_stream<> _stickersUpdated;
+
+	mtpRequestId _cloudSetRequestId = 0;
+	uint64 _cloudSetHash = 0;
+	std::vector<not_null<DocumentData*>> _cloudSet;
+	rpl::event_stream<> _cloudSetUpdated;
+
+	mtpRequestId _helloStickersRequestId = 0;
+	uint64 _helloStickersHash = 0;
+	std::vector<not_null<DocumentData*>> _helloStickers;
+	rpl::event_stream<> _helloStickersUpdated;
+
+	int64 _monthlyAmount = 0;
+	QString _monthlyCurrency;
+
+	mtpRequestId _giftCodeRequestId = 0;
+	QString _giftCodeSlug;
+	base::flat_map<QString, GiftCode> _giftCodes;
+	rpl::event_stream<QString> _giftCodeUpdated;
+
+	mtpRequestId _giveawayInfoRequestId = 0;
+	PeerData *_giveawayInfoPeer = nullptr;
+	MsgId _giveawayInfoMessageId = 0;
+	Fn<void(GiveawayInfo)> _giveawayInfoDone;
+
+	Data::PremiumSubscriptionOptions _subscriptionOptions;
+
+	rpl::event_stream<> _someMessageMoneyRestrictionsResolved;
+	base::flat_set<not_null<UserData*>> _resolveMessageMoneyRequiredUsers;
+	base::flat_set<not_null<UserData*>> _resolveMessageMoneyRequestedUsers;
+	bool _messageMoneyRequestScheduled = false;
+
+};
+
+class PremiumGiftCodeOptions final {
+public:
+	PremiumGiftCodeOptions(not_null<PeerData*> peer);
+
+	[[nodiscard]] rpl::producer<rpl::no_value, QString> request();
+	[[nodiscard]] std::vector<GiftOptionData> optionsForPeer() const;
+	[[nodiscard]] Data::PremiumSubscriptionOptions optionsForGiveaway(
+			int usersCount);
+	[[nodiscard]] const std::vector<int> &availablePresets() const;
+	[[nodiscard]] int monthsFromPreset(int monthsIndex);
+	[[nodiscard]] Payments::InvoicePremiumGiftCode invoice(
+		int users,
+		int months);
+	[[nodiscard]] rpl::producer<rpl::no_value, QString> applyPrepaid(
+		const Payments::InvoicePremiumGiftCode &invoice,
+		uint64 prepaidId);
+
+	[[nodiscard]] int giveawayBoostsPerPremium() const;
+	[[nodiscard]] int giveawayCountriesMax() const;
+	[[nodiscard]] int giveawayAddPeersMax() const;
+	[[nodiscard]] int giveawayPeriodMax() const;
+	[[nodiscard]] bool giveawayGiftsPurchaseAvailable() const;
+
+	[[nodiscard]] rpl::producer<rpl::no_value, QString> requestStarGifts();
+	[[nodiscard]] const std::vector<Data::StarGift> &starGifts() const;
+
+private:
+	struct Token final {
+		int users = 0;
+		int months = 0;
+
+		friend inline constexpr auto operator<=>(Token, Token) = default;
+
+	};
+	struct Store final {
+		uint64 amount = 0;
+		QString currency;
+		QString product;
+		int quantity = 0;
+	};
+	using Amount = int;
+	using PremiumSubscriptionOptions = Data::PremiumSubscriptionOptions;
+	const not_null<PeerData*> _peer;
+	base::flat_map<Amount, PremiumSubscriptionOptions> _subscriptionOptions;
+	struct {
+		std::vector<int> months;
+		std::vector<int64> totalCosts;
+		std::vector<QString> currencies;
+	} _optionsForOnePerson;
+
+	std::vector<int> _availablePresets;
+
+	base::flat_map<Token, Store> _stores;
+
+	int32 _giftsHash = 0;
+	std::vector<Data::StarGift> _gifts;
+
+	MTP::Sender _api;
+
+};
+
+class SponsoredToggle final {
+public:
+	explicit SponsoredToggle(not_null<Main::Session*> session);
+
+	[[nodiscard]] rpl::producer<bool> toggled();
+	[[nodiscard]] rpl::producer<rpl::no_value, QString> setToggled(bool);
+
+private:
+	MTP::Sender _api;
+
+};
+
+struct MessageMoneyRestriction {
+	int starsPerMessage = 0;
+	bool premiumRequired = false;
+	bool known = false;
+
+	explicit operator bool() const {
+		return starsPerMessage != 0 || premiumRequired;
+	}
+
+	friend inline bool operator==(
+		const MessageMoneyRestriction &,
+		const MessageMoneyRestriction &) = default;
+};
+[[nodiscard]] MessageMoneyRestriction ResolveMessageMoneyRestrictions(
+	not_null<PeerData*> peer,
+	History *maybeHistory);
+
+[[nodiscard]] rpl::producer<DocumentData*> RandomHelloStickerValue(
+	not_null<Main::Session*> session);
+
+[[nodiscard]] std::optional<Data::StarGift> FromTL(
+	not_null<Main::Session*> session,
+	const MTPstarGift &gift);
+[[nodiscard]] std::optional<Data::SavedStarGift> FromTL(
+	not_null<PeerData*> to,
+	const MTPsavedStarGift &gift);
+
+[[nodiscard]] Data::UniqueGiftModel FromTL(
+	not_null<Main::Session*> session,
+	const MTPDstarGiftAttributeModel &data);
+[[nodiscard]] Data::UniqueGiftPattern FromTL(
+	not_null<Main::Session*> session,
+	const MTPDstarGiftAttributePattern &data);
+[[nodiscard]] Data::UniqueGiftBackdrop FromTL(
+	const MTPDstarGiftAttributeBackdrop &data);
+[[nodiscard]] Data::UniqueGiftOriginalDetails FromTL(
+	not_null<Main::Session*> session,
+	const MTPDstarGiftAttributeOriginalDetails &data);
+
+} // namespace Api

Telegram/SourceFiles/api/api_premium_option.cpp

@@ -0,0 +1,46 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_premium_option.h"
+
+#include "ui/text/format_values.h"
+
+namespace Api {
+
+constexpr auto kDiscountDivider = 1.;
+
+Data::PremiumSubscriptionOption CreateSubscriptionOption(
+		int months,
+		int monthlyAmount,
+		int64 amount,
+		const QString &currency,
+		const QString &botUrl) {
+	const auto discount = [&] {
+		const auto percent = 1. - float64(amount) / (monthlyAmount * months);
+		return std::round(percent * 100. / kDiscountDivider)
+			* kDiscountDivider;
+	}();
+	return {
+		.months = months,
+		.duration = Ui::FormatTTL(months * 86400 * 31),
+		.discount = (discount > 0)
+			? QString::fromUtf8("\xe2\x88\x92%1%").arg(discount)
+			: QString(),
+		.costPerMonth = Ui::FillAmountAndCurrency(
+			amount / float64(months),
+			currency),
+		.costNoDiscount = Ui::FillAmountAndCurrency(
+			monthlyAmount * months,
+			currency),
+		.costPerYear = Ui::FillAmountAndCurrency(
+			amount / float64(months / 12.),
+			currency),
+		.botUrl = botUrl,
+	};
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_premium_option.h

@@ -0,0 +1,67 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "data/data_premium_subscription_option.h"
+
+namespace Api {
+
+[[nodiscard]] Data::PremiumSubscriptionOption CreateSubscriptionOption(
+	int months,
+	int monthlyAmount,
+	int64 amount,
+	const QString &currency,
+	const QString &botUrl);
+
+template<typename Option>
+[[nodiscard]] auto PremiumSubscriptionOptionsFromTL(
+		const QVector<Option> &tlOpts) -> Data::PremiumSubscriptionOptions {
+	if (tlOpts.isEmpty()) {
+		return {};
+	}
+	auto monthlyAmountPerCurrency = base::flat_map<QString, int>();
+	auto result = Data::PremiumSubscriptionOptions();
+	const auto monthlyAmount = [&](const QString &currency) -> int {
+		const auto it = monthlyAmountPerCurrency.find(currency);
+		if (it != end(monthlyAmountPerCurrency)) {
+			return it->second;
+		}
+		const auto &min = ranges::min_element(
+			tlOpts,
+			ranges::less(),
+			[&](const Option &o) {
+				return currency == qs(o.data().vcurrency())
+					? o.data().vamount().v
+					: std::numeric_limits<int64_t>::max();
+			}
+		)->data();
+		const auto monthly = min.vamount().v / float64(min.vmonths().v);
+		monthlyAmountPerCurrency.emplace(currency, monthly);
+		return monthly;
+	};
+	result.reserve(tlOpts.size());
+	for (const auto &tlOption : tlOpts) {
+		const auto &option = tlOption.data();
+		auto botUrl = QString();
+		if constexpr (!std::is_same_v<Option, MTPPremiumGiftCodeOption>) {
+			botUrl = qs(option.vbot_url());
+		}
+		const auto months = option.vmonths().v;
+		const auto amount = option.vamount().v;
+		const auto currency = qs(option.vcurrency());
+		result.push_back(CreateSubscriptionOption(
+			months,
+			monthlyAmount(currency),
+			amount,
+			currency,
+			botUrl));
+	}
+	return result;
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_report.cpp

@@ -0,0 +1,145 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_report.h"
+
+#include "apiwrap.h"
+#include "data/data_peer.h"
+#include "data/data_photo.h"
+#include "data/data_report.h"
+#include "data/data_user.h"
+#include "lang/lang_keys.h"
+#include "main/main_session.h"
+#include "ui/boxes/report_box_graphics.h"
+#include "ui/layers/show.h"
+
+namespace Api {
+
+namespace {
+
+MTPreportReason ReasonToTL(const Ui::ReportReason &reason) {
+	using Reason = Ui::ReportReason;
+	switch (reason) {
+	case Reason::Spam: return MTP_inputReportReasonSpam();
+	case Reason::Fake: return MTP_inputReportReasonFake();
+	case Reason::Violence: return MTP_inputReportReasonViolence();
+	case Reason::ChildAbuse: return MTP_inputReportReasonChildAbuse();
+	case Reason::Pornography: return MTP_inputReportReasonPornography();
+	case Reason::Copyright: return MTP_inputReportReasonCopyright();
+	case Reason::IllegalDrugs: return MTP_inputReportReasonIllegalDrugs();
+	case Reason::PersonalDetails:
+		return MTP_inputReportReasonPersonalDetails();
+	case Reason::Other: return MTP_inputReportReasonOther();
+	}
+	Unexpected("Bad reason group value.");
+}
+
+} // namespace
+
+void SendPhotoReport(
+		std::shared_ptr<Ui::Show> show,
+		not_null<PeerData*> peer,
+		Ui::ReportReason reason,
+		const QString &comment,
+		not_null<PhotoData*> photo) {
+	peer->session().api().request(MTPaccount_ReportProfilePhoto(
+		peer->input(),
+		photo->mtpInput(),
+		ReasonToTL(reason),
+		MTP_string(comment)
+	)).done([=] {
+		show->showToast(tr::lng_report_thanks(tr::now));
+	}).send();
+}
+
+auto CreateReportMessagesOrStoriesCallback(
+	std::shared_ptr<Ui::Show> show,
+	not_null<PeerData*> peer)
+-> Fn<void(Data::ReportInput, Fn<void(ReportResult)>)> {
+	using TLChoose = MTPDreportResultChooseOption;
+	using TLAddComment = MTPDreportResultAddComment;
+	using TLReported = MTPDreportResultReported;
+	using Result = ReportResult;
+
+	struct State final {
+#ifdef _DEBUG
+		~State() {
+			qDebug() << "Messages or Stories Report ~State().";
+		}
+#endif
+		mtpRequestId requestId = 0;
+	};
+	const auto state = std::make_shared<State>();
+
+	return [=](
+			Data::ReportInput reportInput,
+			Fn<void(Result)> done) {
+		auto apiIds = QVector<MTPint>();
+		apiIds.reserve(reportInput.ids.size() + reportInput.stories.size());
+		for (const auto &id : reportInput.ids) {
+			apiIds.push_back(MTP_int(id));
+		}
+		for (const auto &story : reportInput.stories) {
+			apiIds.push_back(MTP_int(story));
+		}
+
+		const auto received = [=](
+				const MTPReportResult &result,
+				mtpRequestId requestId) {
+			if (state->requestId != requestId) {
+				return;
+			}
+			state->requestId = 0;
+			done(result.match([&](const TLChoose &data) {
+				const auto t = qs(data.vtitle());
+				auto list = Result::Options();
+				list.reserve(data.voptions().v.size());
+				for (const auto &tl : data.voptions().v) {
+					list.emplace_back(Result::Option{
+						.id = tl.data().voption().v,
+						.text = qs(tl.data().vtext()),
+					});
+				}
+				return Result{ .options = std::move(list), .title = t };
+			}, [&](const TLAddComment &data) -> Result {
+				return {
+					.commentOption = ReportResult::CommentOption{
+						.optional = data.is_optional(),
+						.id = data.voption().v,
+					}
+				};
+			}, [&](const TLReported &data) -> Result {
+				return { .successful = true };
+			}));
+		};
+
+		const auto fail = [=](const MTP::Error &error) {
+			state->requestId = 0;
+			done({ .error = error.type() });
+		};
+
+		if (!reportInput.stories.empty()) {
+			state->requestId = peer->session().api().request(
+				MTPstories_Report(
+					peer->input(),
+					MTP_vector<MTPint>(apiIds),
+					MTP_bytes(reportInput.optionId),
+					MTP_string(reportInput.comment))
+			).done(received).fail(fail).send();
+		} else {
+			state->requestId = peer->session().api().request(
+				MTPmessages_Report(
+					peer->input(),
+					MTP_vector<MTPint>(apiIds),
+					MTP_bytes(reportInput.optionId),
+					MTP_string(reportInput.comment))
+			).done(received).fail(fail).send();
+		}
+	};
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_report.h

@@ -0,0 +1,56 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+class HistoryItem;
+class PeerData;
+class PhotoData;
+
+namespace Ui {
+class Show;
+enum class ReportReason;
+} // namespace Ui
+
+namespace Data {
+struct ReportInput;
+} // namespace Data
+
+namespace Api {
+
+struct ReportResult final {
+	using Id = QByteArray;
+	struct Option final {
+		Id id = 0;
+		QString text;
+	};
+	using Options = std::vector<Option>;
+	Options options;
+	QString title;
+	QString error;
+	QString comment;
+	struct CommentOption {
+		bool optional = false;
+		Id id = 0;
+	};
+	std::optional<CommentOption> commentOption;
+	bool successful = false;
+};
+
+void SendPhotoReport(
+	std::shared_ptr<Ui::Show> show,
+	not_null<PeerData*> peer,
+	Ui::ReportReason reason,
+	const QString &comment,
+	not_null<PhotoData*> photo);
+
+[[nodiscard]] auto CreateReportMessagesOrStoriesCallback(
+	std::shared_ptr<Ui::Show> show,
+	not_null<PeerData*> peer)
+-> Fn<void(Data::ReportInput, Fn<void(ReportResult)>)>;
+
+} // namespace Api

Telegram/SourceFiles/api/api_ringtones.cpp

@@ -0,0 +1,205 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_ringtones.h"
+
+#include "api/api_toggling_media.h"
+#include "apiwrap.h"
+#include "base/random.h"
+#include "base/unixtime.h"
+#include "data/data_document.h"
+#include "data/data_document_media.h"
+#include "data/data_file_origin.h"
+#include "data/data_session.h"
+#include "data/notify/data_notify_settings.h"
+#include "main/main_app_config.h"
+#include "main/main_session.h"
+#include "storage/file_upload.h"
+#include "storage/localimageloader.h"
+
+namespace Api {
+namespace {
+
+std::shared_ptr<FilePrepareResult> PrepareRingtoneDocument(
+		MTP::DcId dcId,
+		const QString &filename,
+		const QString &filemime,
+		const QByteArray &content) {
+	const auto id = base::RandomValue<DocumentId>();
+	auto attributes = QVector<MTPDocumentAttribute>(
+		1,
+		MTP_documentAttributeFilename(MTP_string(filename)));
+
+	auto result = MakePreparedFile({
+		.id = id,
+		.type = SendMediaType::File,
+	});
+	result->filename = filename;
+	result->content = content;
+	result->filesize = content.size();
+	result->setFileData(content);
+	result->document = MTP_document(
+		MTP_flags(0),
+		MTP_long(id),
+		MTP_long(0),
+		MTP_bytes(),
+		MTP_int(base::unixtime::now()),
+		MTP_string(filemime),
+		MTP_long(content.size()),
+		MTP_vector<MTPPhotoSize>(),
+		MTPVector<MTPVideoSize>(),
+		MTP_int(dcId),
+		MTP_vector<MTPDocumentAttribute>(std::move(attributes)));
+	return result;
+}
+
+} // namespace
+
+Ringtones::Ringtones(not_null<ApiWrap*> api)
+: _session(&api->session())
+, _api(&api->instance()) {
+	crl::on_main(_session, [=] {
+		// You can't use _session->lifetime() in the constructor,
+		// only queued, because it is not constructed yet.
+		_session->uploader().documentReady(
+		) | rpl::on_next([=](const Storage::UploadedMedia &data) {
+			ready(data.fullId, data.info.file);
+		}, _session->lifetime());
+	});
+}
+
+void Ringtones::upload(
+		const QString &filename,
+		const QString &filemime,
+		const QByteArray &content) {
+	const auto ready = PrepareRingtoneDocument(
+		_api.instance().mainDcId(),
+		filename,
+		filemime,
+		content);
+
+	const auto uploadedData = UploadedData{ filename, filemime, content };
+	const auto fakeId = FullMsgId(
+		_session->userPeerId(),
+		_session->data().nextLocalMessageId());
+	const auto already = ranges::find_if(
+		_uploads,
+		[&](const auto &d) {
+			return uploadedData.filemime == d.second.filemime
+				&& uploadedData.filename == d.second.filename;
+		});
+	if (already != end(_uploads)) {
+		_session->uploader().cancel(already->first);
+		_uploads.erase(already);
+	}
+	_uploads.emplace(fakeId, uploadedData);
+	_session->uploader().upload(fakeId, ready);
+}
+
+void Ringtones::ready(const FullMsgId &msgId, const MTPInputFile &file) {
+	const auto maybeUploadedData = _uploads.take(msgId);
+	if (!maybeUploadedData) {
+		return;
+	}
+	const auto uploadedData = *maybeUploadedData;
+	_api.request(MTPaccount_UploadRingtone(
+		file,
+		MTP_string(uploadedData.filename),
+		MTP_string(uploadedData.filemime)
+	)).done([=, content = uploadedData.content](const MTPDocument &result) {
+		const auto document = _session->data().processDocument(result);
+		_list.documents.insert(_list.documents.begin(), document->id);
+		const auto media = document->createMediaView();
+		media->setBytes(content);
+		document->owner().notifySettings().cacheSound(document);
+		_uploadDones.fire_copy(document->id);
+	}).fail([=](const MTP::Error &error) {
+		_uploadFails.fire_copy(error.type());
+	}).send();
+}
+
+void Ringtones::requestList() {
+	if (_list.requestId) {
+		return;
+	}
+	_list.requestId = _api.request(
+		MTPaccount_GetSavedRingtones(MTP_long(_list.hash))
+	).done([=](const MTPaccount_SavedRingtones &result) {
+		_list.requestId = 0;
+		result.match([&](const MTPDaccount_savedRingtones &data) {
+			_list.hash = data.vhash().v;
+			_list.documents.clear();
+			_list.documents.reserve(data.vringtones().v.size());
+			for (const auto &d : data.vringtones().v) {
+				const auto document = _session->data().processDocument(d);
+				document->forceToCache(true);
+				_list.documents.emplace_back(document->id);
+			}
+			_list.updates.fire({});
+		}, [&](const MTPDaccount_savedRingtonesNotModified &) {
+		});
+	}).fail([=] {
+		_list.requestId = 0;
+	}).send();
+}
+
+const Ringtones::Ids &Ringtones::list() const {
+	return _list.documents;
+}
+
+rpl::producer<> Ringtones::listUpdates() const {
+	return _list.updates.events();
+}
+
+rpl::producer<QString> Ringtones::uploadFails() const {
+	return _uploadFails.events();
+}
+
+rpl::producer<DocumentId> Ringtones::uploadDones() const {
+	return _uploadDones.events();
+}
+
+void Ringtones::applyUpdate() {
+	_list.hash = 0;
+	_list.documents.clear();
+	requestList();
+}
+
+void Ringtones::remove(DocumentId id) {
+	if (const auto document = _session->data().document(id)) {
+		ToggleSavedRingtone(
+			document,
+			Data::FileOriginRingtones(),
+			crl::guard(&document->session(), [=] {
+				const auto it = ranges::find(_list.documents, id);
+				if (it != end(_list.documents)) {
+					_list.documents.erase(it);
+				}
+			}),
+			false);
+	}
+}
+
+int64 Ringtones::maxSize() const {
+	return _session->appConfig().get<int>(
+		u"ringtone_size_max"_q,
+		100 * 1024);
+}
+
+int Ringtones::maxSavedCount() const {
+	return _session->appConfig().get<int>(
+		u"ringtone_saved_count_max"_q,
+		100);
+}
+
+crl::time Ringtones::maxDuration() const {
+	return crl::time(1000) * _session->appConfig().get<int>(
+		u"ringtone_duration_max"_q,
+		5);
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_ringtones.h

@@ -0,0 +1,69 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "mtproto/sender.h"
+
+class ApiWrap;
+class PeerData;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+class Ringtones final {
+public:
+	explicit Ringtones(not_null<ApiWrap*> api);
+
+	using Ids = std::vector<DocumentId>;
+
+	void requestList();
+	void applyUpdate();
+	void remove(DocumentId id);
+
+	void upload(
+		const QString &filename,
+		const QString &filemime,
+		const QByteArray &content);
+
+	[[nodiscard]] const Ids &list() const;
+	[[nodiscard]] rpl::producer<> listUpdates() const;
+	[[nodiscard]] rpl::producer<QString> uploadFails() const;
+	[[nodiscard]] rpl::producer<DocumentId> uploadDones() const;
+
+	[[nodiscard]] int64 maxSize() const;
+	[[nodiscard]] int maxSavedCount() const;
+	[[nodiscard]] crl::time maxDuration() const;
+
+private:
+	struct UploadedData {
+		QString filename;
+		QString filemime;
+		QByteArray content;
+	};
+	void ready(const FullMsgId &msgId, const MTPInputFile &file);
+
+	const not_null<Main::Session*> _session;
+	MTP::Sender _api;
+
+	base::flat_map<FullMsgId, UploadedData> _uploads;
+	rpl::event_stream<QString> _uploadFails;
+	rpl::event_stream<DocumentId> _uploadDones;
+
+	struct {
+		uint64 hash = 0;
+		Ids documents;
+		rpl::event_stream<> updates;
+		mtpRequestId requestId = 0;
+	} _list;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_self_destruct.cpp

@@ -0,0 +1,76 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_self_destruct.h"
+
+#include "apiwrap.h"
+
+namespace Api {
+
+SelfDestruct::SelfDestruct(not_null<ApiWrap*> api)
+: _api(&api->instance()) {
+}
+
+void SelfDestruct::reload() {
+	if (!_accountTTL.requestId) {
+		_accountTTL.requestId = _api.request(MTPaccount_GetAccountTTL(
+		)).done([=](const MTPAccountDaysTTL &result) {
+			_accountTTL.requestId = 0;
+			_accountTTL.days = result.data().vdays().v;
+		}).fail([=] {
+			_accountTTL.requestId = 0;
+		}).send();
+	}
+	if (!_defaultHistoryTTL.requestId) {
+		_defaultHistoryTTL.requestId = _api.request(
+			MTPmessages_GetDefaultHistoryTTL()
+		).done([=](const MTPDefaultHistoryTTL &result) {
+			_defaultHistoryTTL.requestId = 0;
+			_defaultHistoryTTL.period = result.data().vperiod().v;
+		}).fail([=] {
+			_defaultHistoryTTL.requestId = 0;
+		}).send();
+	}
+}
+
+rpl::producer<int> SelfDestruct::daysAccountTTL() const {
+	return _accountTTL.days.value() | rpl::filter(rpl::mappers::_1 != 0);
+}
+
+rpl::producer<TimeId> SelfDestruct::periodDefaultHistoryTTL() const {
+	return _defaultHistoryTTL.period.value();
+}
+
+TimeId SelfDestruct::periodDefaultHistoryTTLCurrent() const {
+	return _defaultHistoryTTL.period.current();
+}
+
+void SelfDestruct::updateAccountTTL(int days) {
+	_api.request(_accountTTL.requestId).cancel();
+	_accountTTL.requestId = _api.request(MTPaccount_SetAccountTTL(
+		MTP_accountDaysTTL(MTP_int(days))
+	)).done([=] {
+		_accountTTL.requestId = 0;
+	}).fail([=] {
+		_accountTTL.requestId = 0;
+	}).send();
+	_accountTTL.days = days;
+}
+
+void SelfDestruct::updateDefaultHistoryTTL(TimeId period) {
+	_api.request(_defaultHistoryTTL.requestId).cancel();
+	_defaultHistoryTTL.requestId = _api.request(
+		MTPmessages_SetDefaultHistoryTTL(MTP_int(period))
+	).done([=] {
+		_defaultHistoryTTL.requestId = 0;
+	}).fail([=] {
+		_defaultHistoryTTL.requestId = 0;
+	}).send();
+	_defaultHistoryTTL.period = period;
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_self_destruct.h

@@ -0,0 +1,42 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "mtproto/sender.h"
+
+class ApiWrap;
+
+namespace Api {
+
+class SelfDestruct final {
+public:
+	explicit SelfDestruct(not_null<ApiWrap*> api);
+
+	void reload();
+	void updateAccountTTL(int days);
+	void updateDefaultHistoryTTL(TimeId period);
+
+	[[nodiscard]] rpl::producer<int> daysAccountTTL() const;
+	[[nodiscard]] rpl::producer<TimeId> periodDefaultHistoryTTL() const;
+	[[nodiscard]] TimeId periodDefaultHistoryTTLCurrent() const;
+
+private:
+	MTP::Sender _api;
+	struct {
+		mtpRequestId requestId = 0;
+		rpl::variable<int> days = 0;
+	} _accountTTL;
+
+	struct {
+		mtpRequestId requestId = 0;
+		rpl::variable<TimeId> period = 0;
+	} _defaultHistoryTTL;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_send_progress.cpp

@@ -0,0 +1,182 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_send_progress.h"
+
+#include "main/main_session.h"
+#include "history/history.h"
+#include "data/data_peer.h"
+#include "data/data_user.h"
+#include "base/unixtime.h"
+#include "data/data_peer_values.h"
+#include "apiwrap.h"
+
+namespace Api {
+namespace {
+
+constexpr auto kCancelTypingActionTimeout = crl::time(5000);
+constexpr auto kSendMySpeakingInterval = 3 * crl::time(1000);
+constexpr auto kSendMyTypingInterval = 5 * crl::time(1000);
+constexpr auto kSendTypingsToOfflineFor = TimeId(30);
+
+} // namespace
+
+SendProgressManager::SendProgressManager(not_null<Main::Session*> session)
+: _session(session)
+, _stopTypingTimer([=] { cancelTyping(base::take(_stopTypingHistory)); }) {
+}
+
+void SendProgressManager::cancel(
+		not_null<History*> history,
+		SendProgressType type) {
+	cancel(history, 0, type);
+}
+
+void SendProgressManager::cancel(
+		not_null<History*> history,
+		MsgId topMsgId,
+		SendProgressType type) {
+	const auto i = _requests.find(Key{ history, topMsgId, type });
+	if (i != _requests.end()) {
+		_session->api().request(i->second).cancel();
+		_requests.erase(i);
+	}
+}
+
+void SendProgressManager::cancelTyping(not_null<History*> history) {
+	_stopTypingTimer.cancel();
+	cancel(history, SendProgressType::Typing);
+}
+
+void SendProgressManager::update(
+		not_null<History*> history,
+		SendProgressType type,
+		int progress) {
+	update(history, 0, type, progress);
+}
+
+void SendProgressManager::update(
+		not_null<History*> history,
+		MsgId topMsgId,
+		SendProgressType type,
+		int progress) {
+	const auto peer = history->peer;
+	if (peer->isSelf()
+		|| (peer->isChannel()
+			&& !peer->isMegagroup()
+			&& type != SendProgressType::Speaking)) {
+		return;
+	}
+
+	const auto doing = (progress >= 0);
+	const auto key = Key{ history, topMsgId, type };
+	if (updated(key, doing)) {
+		cancel(history, topMsgId, type);
+		if (doing) {
+			send(key, progress);
+		}
+	}
+}
+
+bool SendProgressManager::updated(const Key &key, bool doing) {
+	const auto now = crl::now();
+	const auto i = _updated.find(key);
+	if (doing) {
+		const auto sendEach = (key.type == SendProgressType::Speaking)
+			? kSendMySpeakingInterval
+			: kSendMyTypingInterval;
+		if (i == end(_updated)) {
+			_updated.emplace(key, now + 2 * sendEach);
+		} else if (i->second > now + sendEach) {
+			return false;
+		} else {
+			i->second = now + 2 * sendEach;
+		}
+	} else {
+		if (i == end(_updated)) {
+			return false;
+		} else if (i->second <= now) {
+			return false;
+		} else {
+			_updated.erase(i);
+		}
+	}
+	return true;
+}
+
+void SendProgressManager::send(const Key &key, int progress) {
+	if (skipRequest(key)) {
+		return;
+	}
+	using Type = SendProgressType;
+	const auto action = [&]() -> MTPsendMessageAction {
+		const auto p = MTP_int(progress);
+		switch (key.type) {
+		case Type::Typing: return MTP_sendMessageTypingAction();
+		case Type::RecordVideo: return MTP_sendMessageRecordVideoAction();
+		case Type::UploadVideo: return MTP_sendMessageUploadVideoAction(p);
+		case Type::RecordVoice: return MTP_sendMessageRecordAudioAction();
+		case Type::UploadVoice: return MTP_sendMessageUploadAudioAction(p);
+		case Type::RecordRound: return MTP_sendMessageRecordRoundAction();
+		case Type::UploadRound: return MTP_sendMessageUploadRoundAction(p);
+		case Type::UploadPhoto: return MTP_sendMessageUploadPhotoAction(p);
+		case Type::UploadFile: return MTP_sendMessageUploadDocumentAction(p);
+		case Type::ChooseLocation: return MTP_sendMessageGeoLocationAction();
+		case Type::ChooseContact: return MTP_sendMessageChooseContactAction();
+		case Type::PlayGame: return MTP_sendMessageGamePlayAction();
+		case Type::Speaking: return MTP_speakingInGroupCallAction();
+		case Type::ChooseSticker: return MTP_sendMessageChooseStickerAction();
+		default: return MTP_sendMessageTypingAction();
+		}
+	}();
+	const auto requestId = _session->api().request(MTPmessages_SetTyping(
+		MTP_flags(key.topMsgId
+			? MTPmessages_SetTyping::Flag::f_top_msg_id
+			: MTPmessages_SetTyping::Flag(0)),
+		key.history->peer->input(),
+		MTP_int(key.topMsgId),
+		action
+	)).done([=](const MTPBool &result, mtpRequestId requestId) {
+		done(requestId);
+	}).send();
+	_requests.emplace(key, requestId);
+
+	if (key.type == Type::Typing) {
+		_stopTypingHistory = key.history;
+		_stopTypingTimer.callOnce(kCancelTypingActionTimeout);
+	}
+}
+
+bool SendProgressManager::skipRequest(const Key &key) const {
+	const auto user = key.history->peer->asUser();
+	if (!user) {
+		return false;
+	} else if (user->isSelf()) {
+		return true;
+	} else if (user->isBot() && !user->isSupport()) {
+		return true;
+	}
+	const auto recently = base::unixtime::now() - kSendTypingsToOfflineFor;
+	const auto lastseen = user->lastseen();
+	if (lastseen.isRecently()) {
+		return false;
+	} else if (const auto value = lastseen.onlineTill()) {
+		return (value < recently);
+	}
+	return true;
+}
+
+void SendProgressManager::done(mtpRequestId requestId) {
+	for (auto i = _requests.begin(), e = _requests.end(); i != e; ++i) {
+		if (i->second == requestId) {
+			_requests.erase(i);
+			break;
+		}
+	}
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_send_progress.h

@@ -0,0 +1,105 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "api/api_common.h"
+#include "base/timer.h"
+
+class History;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+enum class SendProgressType {
+	Typing,
+	RecordVideo,
+	UploadVideo,
+	RecordVoice,
+	UploadVoice,
+	RecordRound,
+	UploadRound,
+	UploadPhoto,
+	UploadFile,
+	ChooseLocation,
+	ChooseContact,
+	ChooseSticker,
+	PlayGame,
+	Speaking,
+};
+
+struct SendProgress {
+	SendProgress(
+		SendProgressType type,
+		crl::time until,
+		int progress = 0)
+	: type(type)
+	, until(until)
+	, progress(progress) {
+	}
+	SendProgressType type = SendProgressType::Typing;
+	crl::time until = 0;
+	int progress = 0;
+
+};
+
+class SendProgressManager final {
+public:
+	SendProgressManager(not_null<Main::Session*> session);
+
+	void update(
+		not_null<History*> history,
+		SendProgressType type,
+		int progress = 0);
+	void update(
+		not_null<History*> history,
+		MsgId topMsgId,
+		SendProgressType type,
+		int progress = 0);
+	void cancel(
+		not_null<History*> history,
+		MsgId topMsgId,
+		SendProgressType type);
+	void cancel(
+		not_null<History*> history,
+		SendProgressType type);
+	void cancelTyping(not_null<History*> history);
+
+private:
+	struct Key {
+		not_null<History*> history;
+		MsgId topMsgId = 0;
+		SendProgressType type = SendProgressType();
+
+		inline bool operator<(const Key &other) const {
+			return (history < other.history)
+				|| (history == other.history && topMsgId < other.topMsgId)
+				|| (history == other.history
+					&& topMsgId == other.topMsgId
+					&& type < other.type);
+		}
+	};
+
+	bool updated(const Key &key, bool doing);
+
+	void send(const Key &key, int progress);
+	void done(mtpRequestId requestId);
+
+	[[nodiscard]] bool skipRequest(const Key &key) const;
+
+	const not_null<Main::Session*> _session;
+	base::flat_map<Key, mtpRequestId> _requests;
+	base::flat_map<Key, crl::time> _updated;
+	base::Timer _stopTypingTimer;
+	History *_stopTypingHistory = nullptr;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_sending.cpp

@@ -0,0 +1,688 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_sending.h"
+
+#include "api/api_text_entities.h"
+#include "base/random.h"
+#include "base/unixtime.h"
+#include "data/business/data_shortcut_messages.h"
+#include "data/data_document.h"
+#include "data/data_photo.h"
+#include "data/data_channel.h" // ChannelData::addsSignature.
+#include "data/data_user.h" // UserData::name
+#include "data/data_session.h"
+#include "data/data_file_origin.h"
+#include "data/data_histories.h"
+#include "data/data_changes.h"
+#include "data/stickers/data_stickers.h"
+#include "history/history.h"
+#include "history/history_item.h"
+#include "history/history_item_helpers.h" // NewMessageFlags.
+#include "chat_helpers/message_field.h" // ConvertTextTagsToEntities.
+#include "chat_helpers/stickers_dice_pack.h" // DicePacks::kDiceString.
+#include "ui/text/text_entity.h" // TextWithEntities.
+#include "ui/item_text_options.h" // Ui::ItemTextOptions.
+#include "main/main_session.h"
+#include "main/main_app_config.h"
+#include "storage/localimageloader.h"
+#include "storage/file_upload.h"
+#include "mainwidget.h"
+#include "apiwrap.h"
+
+namespace Api {
+namespace {
+
+void InnerFillMessagePostFlags(
+		const SendOptions &options,
+		not_null<PeerData*> peer,
+		MessageFlags &flags) {
+	if (ShouldSendSilent(peer, options)) {
+		flags |= MessageFlag::Silent;
+	}
+	if (!peer->amAnonymous()
+		|| (!peer->isBroadcast()
+			&& options.sendAs
+			&& options.sendAs != peer)) {
+		flags |= MessageFlag::HasFromId;
+	}
+	const auto channel = peer->asBroadcast();
+	if (!channel) {
+		return;
+	}
+	flags |= MessageFlag::Post;
+	// Don't display views and author of a new post when it's scheduled.
+	if (options.scheduled) {
+		return;
+	}
+	flags |= MessageFlag::HasViews;
+	if (channel->addsSignature()) {
+		flags |= MessageFlag::HasPostAuthor;
+	}
+}
+
+void SendSimpleMedia(SendAction action, MTPInputMedia inputMedia) {
+	const auto history = action.history;
+	const auto peer = history->peer;
+	const auto session = &history->session();
+	const auto api = &session->api();
+
+	action.clearDraft = false;
+	action.generateLocal = false;
+	api->sendAction(action);
+
+	const auto randomId = base::RandomValue<uint64>();
+
+	auto flags = NewMessageFlags(peer);
+	auto sendFlags = MTPmessages_SendMedia::Flags(0);
+	if (action.replyTo) {
+		flags |= MessageFlag::HasReplyInfo;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_reply_to;
+	}
+	const auto silentPost = ShouldSendSilent(peer, action.options);
+	InnerFillMessagePostFlags(action.options, peer, flags);
+	if (silentPost) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_silent;
+	}
+	const auto sendAs = action.options.sendAs;
+	if (sendAs) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_send_as;
+	}
+	const auto messagePostAuthor = peer->isBroadcast()
+		? session->user()->name()
+		: QString();
+	const auto starsPaid = std::min(
+		peer->starsPerMessageChecked(),
+		action.options.starsApproved);
+	if (action.options.scheduled) {
+		flags |= MessageFlag::IsOrWasScheduled;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_schedule_date;
+		if (action.options.scheduleRepeatPeriod) {
+			sendFlags |= MTPmessages_SendMedia::Flag::f_schedule_repeat_period;
+		}
+	}
+	if (action.options.shortcutId) {
+		flags |= MessageFlag::ShortcutMessage;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_quick_reply_shortcut;
+	}
+	if (action.options.effectId) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_effect;
+	}
+	if (action.options.suggest) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_suggested_post;
+	}
+	if (action.options.invertCaption) {
+		flags |= MessageFlag::InvertMedia;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_invert_media;
+	}
+	if (starsPaid) {
+		action.options.starsApproved -= starsPaid;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_allow_paid_stars;
+	}
+
+	auto &histories = history->owner().histories();
+	histories.sendPreparedMessage(
+		history,
+		action.replyTo,
+		randomId,
+		Data::Histories::PrepareMessage<MTPmessages_SendMedia>(
+			MTP_flags(sendFlags),
+			peer->input(),
+			Data::Histories::ReplyToPlaceholder(),
+			std::move(inputMedia),
+			MTPstring(),
+			MTP_long(randomId),
+			MTPReplyMarkup(),
+			MTPvector<MTPMessageEntity>(),
+			MTP_int(action.options.scheduled),
+			MTP_int(action.options.scheduleRepeatPeriod),
+			(sendAs ? sendAs->input() : MTP_inputPeerEmpty()),
+			Data::ShortcutIdToMTP(session, action.options.shortcutId),
+			MTP_long(action.options.effectId),
+			MTP_long(starsPaid),
+			SuggestToMTP(action.options.suggest)
+		), [=](const MTPUpdates &result, const MTP::Response &response) {
+	}, [=](const MTP::Error &error, const MTP::Response &response) {
+		api->sendMessageFail(error, peer, randomId);
+	});
+
+	api->finishForwarding(action);
+}
+
+template <typename MediaData>
+void SendExistingMedia(
+		MessageToSend &&message,
+		not_null<MediaData*> media,
+		Fn<MTPInputMedia()> inputMedia,
+		Data::FileOrigin origin,
+		std::optional<MsgId> localMessageId) {
+	const auto history = message.action.history;
+	const auto peer = history->peer;
+	const auto session = &history->session();
+	const auto api = &session->api();
+
+	message.action.clearDraft = false;
+	message.action.generateLocal = true;
+	api->sendAction(message.action);
+
+	const auto newId = FullMsgId(
+		peer->id,
+		localMessageId
+			? (*localMessageId)
+			: session->data().nextLocalMessageId());
+	const auto randomId = base::RandomValue<uint64>();
+	auto &action = message.action;
+
+	auto flags = NewMessageFlags(peer);
+	auto sendFlags = MTPmessages_SendMedia::Flags(0);
+	if (action.replyTo) {
+		flags |= MessageFlag::HasReplyInfo;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_reply_to;
+	}
+	const auto silentPost = ShouldSendSilent(peer, action.options);
+	InnerFillMessagePostFlags(action.options, peer, flags);
+	if (silentPost) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_silent;
+	}
+	const auto sendAs = action.options.sendAs;
+	if (sendAs) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_send_as;
+	}
+	auto caption = TextWithEntities{
+		message.textWithTags.text,
+		TextUtilities::ConvertTextTagsToEntities(message.textWithTags.tags)
+	};
+	TextUtilities::Trim(caption);
+	auto sentEntities = EntitiesToMTP(
+		session,
+		caption.entities,
+		ConvertOption::SkipLocal);
+	if (!sentEntities.v.isEmpty()) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_entities;
+	}
+	const auto captionText = caption.text;
+	const auto starsPaid = std::min(
+		peer->starsPerMessageChecked(),
+		action.options.starsApproved);
+	if (action.options.scheduled) {
+		flags |= MessageFlag::IsOrWasScheduled;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_schedule_date;
+		if (action.options.scheduleRepeatPeriod) {
+			sendFlags |= MTPmessages_SendMedia::Flag::f_schedule_repeat_period;
+		}
+	}
+	if (action.options.shortcutId) {
+		flags |= MessageFlag::ShortcutMessage;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_quick_reply_shortcut;
+	}
+	if (action.options.effectId) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_effect;
+	}
+	if (action.options.suggest) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_suggested_post;
+	}
+	if (action.options.invertCaption) {
+		flags |= MessageFlag::InvertMedia;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_invert_media;
+	}
+	if (starsPaid) {
+		action.options.starsApproved -= starsPaid;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_allow_paid_stars;
+	}
+
+	session->data().registerMessageRandomId(randomId, newId);
+
+	history->addNewLocalMessage({
+		.id = newId.msg,
+		.flags = flags,
+		.from = NewMessageFromId(action),
+		.replyTo = action.replyTo,
+		.date = NewMessageDate(action.options),
+		.shortcutId = action.options.shortcutId,
+		.starsPaid = starsPaid,
+		.postAuthor = NewMessagePostAuthor(action),
+		.effectId = action.options.effectId,
+		.suggest = HistoryMessageSuggestInfo(action.options),
+	}, media, caption);
+
+	const auto performRequest = [=](const auto &repeatRequest) -> void {
+		auto &histories = history->owner().histories();
+		const auto session = &history->session();
+		const auto usedFileReference = media->fileReference();
+		histories.sendPreparedMessage(
+			history,
+			action.replyTo,
+			randomId,
+			Data::Histories::PrepareMessage<MTPmessages_SendMedia>(
+				MTP_flags(sendFlags),
+				peer->input(),
+				Data::Histories::ReplyToPlaceholder(),
+				inputMedia(),
+				MTP_string(captionText),
+				MTP_long(randomId),
+				MTPReplyMarkup(),
+				sentEntities,
+				MTP_int(action.options.scheduled),
+				MTP_int(action.options.scheduleRepeatPeriod),
+				(sendAs ? sendAs->input() : MTP_inputPeerEmpty()),
+				Data::ShortcutIdToMTP(session, action.options.shortcutId),
+				MTP_long(action.options.effectId),
+				MTP_long(starsPaid),
+				SuggestToMTP(action.options.suggest)
+			), [=](const MTPUpdates &result, const MTP::Response &response) {
+		}, [=](const MTP::Error &error, const MTP::Response &response) {
+			if (error.code() == 400
+				&& error.type().startsWith(u"FILE_REFERENCE_"_q)) {
+				api->refreshFileReference(origin, [=](const auto &result) {
+					if (media->fileReference() != usedFileReference) {
+						repeatRequest(repeatRequest);
+					} else {
+						api->sendMessageFail(error, peer, randomId, newId);
+					}
+				});
+			} else {
+				api->sendMessageFail(error, peer, randomId, newId);
+			}
+		});
+	};
+	performRequest(performRequest);
+
+	api->finishForwarding(action);
+}
+
+} // namespace
+
+void SendExistingDocument(
+		MessageToSend &&message,
+		not_null<DocumentData*> document,
+		std::optional<MsgId> localMessageId) {
+	const auto inputMedia = [=] {
+		return MTP_inputMediaDocument(
+			MTP_flags(0),
+			document->mtpInput(),
+			MTPInputPhoto(), // video_cover
+			MTPint(), // ttl_seconds
+			MTPint(), // video_timestamp
+			MTPstring()); // query
+	};
+	SendExistingMedia(
+		std::move(message),
+		document,
+		inputMedia,
+		document->stickerOrGifOrigin(),
+		std::move(localMessageId));
+
+	if (document->sticker()) {
+		document->owner().stickers().incrementSticker(document);
+	}
+}
+
+void SendExistingPhoto(
+		MessageToSend &&message,
+		not_null<PhotoData*> photo,
+		std::optional<MsgId> localMessageId) {
+	const auto inputMedia = [=] {
+		return MTP_inputMediaPhoto(
+			MTP_flags(0),
+			photo->mtpInput(),
+			MTPint());
+	};
+	SendExistingMedia(
+		std::move(message),
+		photo,
+		inputMedia,
+		Data::FileOrigin(),
+		std::move(localMessageId));
+}
+
+bool SendDice(MessageToSend &message) {
+	const auto full = QStringView(message.textWithTags.text).trimmed();
+	auto length = 0;
+	if (!Ui::Emoji::Find(full.data(), full.data() + full.size(), &length)
+		|| length != full.size()
+		|| !message.textWithTags.tags.isEmpty()) {
+		return false;
+	}
+	auto &config = message.action.history->session().appConfig();
+	static const auto hardcoded = std::vector<QString>{
+		Stickers::DicePacks::kDiceString,
+		Stickers::DicePacks::kDartString,
+		Stickers::DicePacks::kSlotString,
+		Stickers::DicePacks::kFballString,
+		Stickers::DicePacks::kFballString + QChar(0xFE0F),
+		Stickers::DicePacks::kBballString,
+	};
+	const auto list = config.get<std::vector<QString>>(
+		"emojies_send_dice",
+		hardcoded);
+	const auto emoji = full.toString();
+	if (!ranges::contains(list, emoji)) {
+		return false;
+	}
+	const auto history = message.action.history;
+	const auto peer = history->peer;
+	const auto session = &history->session();
+	const auto api = &session->api();
+
+	message.textWithTags = TextWithTags();
+	message.action.clearDraft = false;
+	message.action.generateLocal = true;
+
+
+	auto &action = message.action;
+	api->sendAction(action);
+
+	const auto newId = FullMsgId(
+		peer->id,
+		session->data().nextLocalMessageId());
+	const auto randomId = base::RandomValue<uint64>();
+
+	auto &histories = history->owner().histories();
+	auto flags = NewMessageFlags(peer);
+	auto sendFlags = MTPmessages_SendMedia::Flags(0);
+	if (action.replyTo) {
+		flags |= MessageFlag::HasReplyInfo;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_reply_to;
+	}
+	const auto silentPost = ShouldSendSilent(peer, action.options);
+	InnerFillMessagePostFlags(action.options, peer, flags);
+	if (silentPost) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_silent;
+	}
+	const auto sendAs = action.options.sendAs;
+	if (sendAs) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_send_as;
+	}
+	if (action.options.scheduled) {
+		flags |= MessageFlag::IsOrWasScheduled;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_schedule_date;
+		if (action.options.scheduleRepeatPeriod) {
+			sendFlags |= MTPmessages_SendMedia::Flag::f_schedule_repeat_period;
+		}
+	}
+	if (action.options.shortcutId) {
+		flags |= MessageFlag::ShortcutMessage;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_quick_reply_shortcut;
+	}
+	if (action.options.effectId) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_effect;
+	}
+	if (action.options.suggest) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_suggested_post;
+	}
+	if (action.options.invertCaption) {
+		flags |= MessageFlag::InvertMedia;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_invert_media;
+	}
+	const auto starsPaid = std::min(
+		peer->starsPerMessageChecked(),
+		action.options.starsApproved);
+	if (starsPaid) {
+		action.options.starsApproved -= starsPaid;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_allow_paid_stars;
+	}
+
+	session->data().registerMessageRandomId(randomId, newId);
+
+	history->addNewLocalMessage({
+		.id = newId.msg,
+		.flags = flags,
+		.from = NewMessageFromId(action),
+		.replyTo = action.replyTo,
+		.date = NewMessageDate(action.options),
+		.shortcutId = action.options.shortcutId,
+		.starsPaid = starsPaid,
+		.postAuthor = NewMessagePostAuthor(action),
+		.effectId = action.options.effectId,
+		.suggest = HistoryMessageSuggestInfo(action.options),
+	}, TextWithEntities(), MTP_messageMediaDice(
+		MTP_int(0),
+		MTP_string(emoji)));
+	histories.sendPreparedMessage(
+		history,
+		action.replyTo,
+		randomId,
+		Data::Histories::PrepareMessage<MTPmessages_SendMedia>(
+			MTP_flags(sendFlags),
+			peer->input(),
+			Data::Histories::ReplyToPlaceholder(),
+			MTP_inputMediaDice(MTP_string(emoji)),
+			MTP_string(),
+			MTP_long(randomId),
+			MTPReplyMarkup(),
+			MTP_vector<MTPMessageEntity>(),
+			MTP_int(action.options.scheduled),
+			MTP_int(action.options.scheduleRepeatPeriod),
+			(sendAs ? sendAs->input() : MTP_inputPeerEmpty()),
+			Data::ShortcutIdToMTP(session, action.options.shortcutId),
+			MTP_long(action.options.effectId),
+			MTP_long(starsPaid),
+			SuggestToMTP(action.options.suggest)
+		), [=](const MTPUpdates &result, const MTP::Response &response) {
+	}, [=](const MTP::Error &error, const MTP::Response &response) {
+		api->sendMessageFail(error, peer, randomId, newId);
+	});
+	api->finishForwarding(action);
+	return true;
+}
+
+void SendLocation(SendAction action, float64 lat, float64 lon) {
+	SendSimpleMedia(
+		action,
+		MTP_inputMediaGeoPoint(
+			MTP_inputGeoPoint(
+				MTP_flags(0),
+				MTP_double(lat),
+				MTP_double(lon),
+				MTPint()))); // accuracy_radius
+}
+
+void SendVenue(SendAction action, Data::InputVenue venue) {
+	SendSimpleMedia(
+		action,
+		MTP_inputMediaVenue(
+			MTP_inputGeoPoint(
+				MTP_flags(0),
+				MTP_double(venue.lat),
+				MTP_double(venue.lon),
+				MTPint()), // accuracy_radius
+			MTP_string(venue.title),
+			MTP_string(venue.address),
+			MTP_string(venue.provider),
+			MTP_string(venue.id),
+			MTP_string(venue.venueType)));
+}
+
+void FillMessagePostFlags(
+		const SendAction &action,
+		not_null<PeerData*> peer,
+		MessageFlags &flags) {
+	InnerFillMessagePostFlags(action.options, peer, flags);
+}
+
+void SendConfirmedFile(
+		not_null<Main::Session*> session,
+		const std::shared_ptr<FilePrepareResult> &file) {
+	const auto isEditing = (file->type != SendMediaType::Audio)
+		&& (file->type != SendMediaType::Round)
+		&& (file->to.replaceMediaOf != 0);
+	const auto newId = FullMsgId(
+		file->to.peer,
+		(isEditing
+			? file->to.replaceMediaOf
+			: session->data().nextLocalMessageId()));
+	const auto groupId = file->album ? file->album->groupId : uint64(0);
+	if (file->album) {
+		const auto proj = [](const SendingAlbum::Item &item) {
+			return item.taskId;
+		};
+		const auto it = ranges::find(file->album->items, file->taskId, proj);
+		Assert(it != file->album->items.end());
+
+		it->msgId = newId;
+	}
+
+	const auto itemToEdit = isEditing
+		? session->data().message(newId)
+		: nullptr;
+	const auto history = session->data().history(file->to.peer);
+	const auto peer = history->peer;
+
+	if (!isEditing) {
+		const auto histories = &session->data().histories();
+		file->to.replyTo.messageId = histories->convertTopicReplyToId(
+			history,
+			file->to.replyTo.messageId);
+		file->to.replyTo.topicRootId = histories->convertTopicReplyToId(
+			history,
+			file->to.replyTo.topicRootId);
+	}
+
+	session->uploader().upload(newId, file);
+
+	auto action = SendAction(history, file->to.options);
+	action.clearDraft = false;
+	action.replyTo = file->to.replyTo;
+	action.generateLocal = true;
+	action.replaceMediaOf = file->to.replaceMediaOf;
+	session->api().sendAction(action);
+
+	auto caption = TextWithEntities{
+		file->caption.text,
+		TextUtilities::ConvertTextTagsToEntities(file->caption.tags)
+	};
+	const auto prepareFlags = Ui::ItemTextOptions(
+		history,
+		session->user()).flags;
+	TextUtilities::PrepareForSending(caption, prepareFlags);
+	TextUtilities::Trim(caption);
+
+	auto flags = isEditing ? MessageFlags() : NewMessageFlags(peer);
+	if (file->to.replyTo) {
+		flags |= MessageFlag::HasReplyInfo;
+	}
+	FillMessagePostFlags(action, peer, flags);
+	if (file->to.options.scheduled) {
+		flags |= MessageFlag::IsOrWasScheduled;
+
+		// Scheduled messages have no 'edited' badge.
+		flags |= MessageFlag::HideEdited;
+	}
+	if (file->to.options.shortcutId) {
+		flags |= MessageFlag::ShortcutMessage;
+
+		// Shortcut messages have no 'edited' badge.
+		flags |= MessageFlag::HideEdited;
+	}
+	if (file->type == SendMediaType::Audio
+		|| file->type == SendMediaType::Round) {
+		if (!peer->isChannel() || peer->isMegagroup()) {
+			flags |= MessageFlag::MediaIsUnread;
+		}
+	}
+	if (file->to.options.invertCaption) {
+		flags |= MessageFlag::InvertMedia;
+	}
+	const auto media = MTPMessageMedia([&] {
+		if (file->type == SendMediaType::Photo) {
+			using Flag = MTPDmessageMediaPhoto::Flag;
+			return MTP_messageMediaPhoto(
+				MTP_flags(Flag::f_photo
+					| (file->spoiler ? Flag::f_spoiler : Flag())),
+				file->photo,
+				MTPint());
+		} else if (file->type == SendMediaType::File) {
+			using Flag = MTPDmessageMediaDocument::Flag;
+			return MTP_messageMediaDocument(
+				MTP_flags(Flag::f_document
+					| (file->spoiler ? Flag::f_spoiler : Flag())
+					| (file->videoCover ? Flag::f_video_cover : Flag())),
+				file->document,
+				MTPVector<MTPDocument>(), // alt_documents
+				file->videoCover ? file->videoCover->photo : MTPPhoto(),
+				MTPint(), // video_timestamp
+				MTPint());
+		} else if (file->type == SendMediaType::Audio) {
+			const auto ttlSeconds = file->to.options.ttlSeconds;
+			using Flag = MTPDmessageMediaDocument::Flag;
+			return MTP_messageMediaDocument(
+				MTP_flags(Flag::f_document
+					| Flag::f_voice
+					| (ttlSeconds ? Flag::f_ttl_seconds : Flag())
+					| (file->videoCover ? Flag::f_video_cover : Flag())),
+				file->document,
+				MTPVector<MTPDocument>(), // alt_documents
+				file->videoCover ? file->videoCover->photo : MTPPhoto(),
+				MTPint(), // video_timestamp
+				MTP_int(ttlSeconds));
+		} else if (file->type == SendMediaType::Round) {
+			using Flag = MTPDmessageMediaDocument::Flag;
+			const auto ttlSeconds = file->to.options.ttlSeconds;
+			return MTP_messageMediaDocument(
+				MTP_flags(Flag::f_document
+					| Flag::f_round
+					| (ttlSeconds ? Flag::f_ttl_seconds : Flag())
+					| (file->spoiler ? Flag::f_spoiler : Flag())),
+				file->document,
+				MTPVector<MTPDocument>(), // alt_documents
+				MTPPhoto(), // video_cover
+				MTPint(), // video_timestamp
+				MTP_int(ttlSeconds));
+		} else {
+			Unexpected("Type in sendFilesConfirmed.");
+		}
+	}());
+
+	if (itemToEdit) {
+		auto edition = HistoryMessageEdition();
+		edition.isEditHide = (flags & MessageFlag::HideEdited);
+		edition.editDate = 0;
+		edition.ttl = 0;
+		edition.mtpMedia = &media;
+		edition.textWithEntities = caption;
+		edition.invertMedia = file->to.options.invertCaption;
+		edition.useSameViews = true;
+		edition.useSameForwards = true;
+		edition.useSameMarkup = true;
+		edition.useSameReplies = true;
+		edition.useSameReactions = true;
+		edition.useSameSuggest = true;
+		edition.savePreviousMedia = true;
+		itemToEdit->applyEdition(std::move(edition));
+	} else {
+		history->addNewLocalMessage({
+			.id = newId.msg,
+			.flags = flags,
+			.from = NewMessageFromId(action),
+			.replyTo = file->to.replyTo,
+			.date = NewMessageDate(file->to.options),
+			.shortcutId = file->to.options.shortcutId,
+			.starsPaid = std::min(
+				history->peer->starsPerMessageChecked(),
+				file->to.options.starsApproved),
+			.postAuthor = NewMessagePostAuthor(action),
+			.groupedId = groupId,
+			.effectId = file->to.options.effectId,
+			.suggest = HistoryMessageSuggestInfo(file->to.options),
+		}, caption, media);
+	}
+
+	if (isEditing) {
+		return;
+	}
+
+	session->data().sendHistoryChangeNotifications();
+	if (!itemToEdit) {
+		session->changes().historyUpdated(
+			history,
+			(action.options.scheduled
+				? Data::HistoryUpdate::Flag::ScheduledSent
+				: Data::HistoryUpdate::Flag::MessageSent));
+	}
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_sending.h

@@ -0,0 +1,56 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+class History;
+class PhotoData;
+class DocumentData;
+struct FilePrepareResult;
+
+namespace Data {
+struct InputVenue;
+} // namespace Data
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+struct MessageToSend;
+struct SendAction;
+
+void SendExistingDocument(
+	MessageToSend &&message,
+	not_null<DocumentData*> document,
+	std::optional<MsgId> localMessageId = std::nullopt);
+
+void SendExistingPhoto(
+	MessageToSend &&message,
+	not_null<PhotoData*> photo,
+	std::optional<MsgId> localMessageId = std::nullopt);
+
+bool SendDice(MessageToSend &message);
+
+// We can't create Data::LocationPoint() and use it
+// for a local sending message, because we can't request
+// map thumbnail in messages history without access hash.
+void SendLocation(SendAction action, float64 lat, float64 lon);
+
+void SendVenue(SendAction action, Data::InputVenue venue);
+
+void FillMessagePostFlags(
+	const SendAction &action,
+	not_null<PeerData*> peer,
+	MessageFlags &flags);
+
+void SendConfirmedFile(
+	not_null<Main::Session*> session,
+	const std::shared_ptr<FilePrepareResult> &file);
+
+} // namespace Api

Telegram/SourceFiles/api/api_sensitive_content.cpp

@@ -0,0 +1,121 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_sensitive_content.h"
+
+#include "apiwrap.h"
+#include "main/main_session.h"
+#include "main/main_app_config.h"
+
+namespace Api {
+namespace {
+
+constexpr auto kRefreshAppConfigTimeout = crl::time(1);
+
+} // namespace
+
+SensitiveContent::SensitiveContent(not_null<ApiWrap*> api)
+: _session(&api->session())
+, _api(&api->instance())
+, _appConfigReloadTimer([=] { _session->appConfig().refresh(); }) {
+}
+
+void SensitiveContent::preload() {
+	if (!_loaded && !_loadRequestId) {
+		reload();
+	}
+}
+
+void SensitiveContent::reload(bool force) {
+	if (_loadRequestId) {
+		if (force) {
+			_loadPending = true;
+		}
+		return;
+	}
+	_loadRequestId = _api.request(MTPaccount_GetContentSettings(
+	)).done([=](const MTPaccount_ContentSettings &result) {
+		_loadRequestId = 0;
+		const auto &data = result.data();
+		const auto enabled = data.is_sensitive_enabled();
+		const auto canChange = data.is_sensitive_can_change();
+		const auto changed = (_enabled.current() != enabled)
+			|| (_canChange.current() != canChange);
+		if (changed) {
+			_enabled = enabled;
+			_canChange = canChange;
+		}
+		if (!_loaded) {
+			_loaded = true;
+			_loadedChanged.fire({});
+		}
+		if (base::take(_appConfigReloadForce) || changed) {
+			_appConfigReloadTimer.callOnce(kRefreshAppConfigTimeout);
+		}
+		if (base::take(_loadPending)) {
+			reload();
+		}
+	}).fail([=] {
+		_loadRequestId = 0;
+	}).send();
+}
+
+bool SensitiveContent::loaded() const {
+	return _loaded;
+}
+
+rpl::producer<bool> SensitiveContent::loadedValue() const {
+	if (_loaded) {
+		return rpl::single(true);
+	}
+	return rpl::single(false) | rpl::then(
+		_loadedChanged.events() | rpl::map_to(true)
+	);
+}
+
+bool SensitiveContent::enabledCurrent() const {
+	return _enabled.current();
+}
+
+rpl::producer<bool> SensitiveContent::enabled() const {
+	return _enabled.value();
+}
+
+bool SensitiveContent::canChangeCurrent() const {
+	return _canChange.current();
+}
+
+rpl::producer<bool> SensitiveContent::canChange() const {
+	return _canChange.value();
+}
+
+void SensitiveContent::update(bool enabled) {
+	if (!_canChange.current()) {
+		return;
+	}
+	using Flag = MTPaccount_SetContentSettings::Flag;
+	_api.request(_saveRequestId).cancel();
+	if (const auto load = base::take(_loadRequestId)) {
+		_api.request(load).cancel();
+		_loadPending = true;
+	}
+	const auto finish = [=] {
+		_saveRequestId = 0;
+		if (base::take(_loadPending)) {
+			_appConfigReloadForce = true;
+			reload(true);
+		} else {
+			_appConfigReloadTimer.callOnce(kRefreshAppConfigTimeout);
+		}
+	};
+	_saveRequestId = _api.request(MTPaccount_SetContentSettings(
+		MTP_flags(enabled ? Flag::f_sensitive_enabled : Flag(0))
+	)).done(finish).fail(finish).send();
+	_enabled = enabled;
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_sensitive_content.h

@@ -0,0 +1,51 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "mtproto/sender.h"
+#include "base/timer.h"
+
+class ApiWrap;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+class SensitiveContent final {
+public:
+	explicit SensitiveContent(not_null<ApiWrap*> api);
+
+	void preload();
+	void reload(bool force = false);
+	void update(bool enabled);
+
+	[[nodiscard]] bool loaded() const;
+	[[nodiscard]] rpl::producer<bool> loadedValue() const;
+	[[nodiscard]] bool enabledCurrent() const;
+	[[nodiscard]] rpl::producer<bool> enabled() const;
+	[[nodiscard]] bool canChangeCurrent() const;
+	[[nodiscard]] rpl::producer<bool> canChange() const;
+
+private:
+	const not_null<Main::Session*> _session;
+	rpl::event_stream<> _loadedChanged;
+	MTP::Sender _api;
+	mtpRequestId _loadRequestId = 0;
+	mtpRequestId _saveRequestId = 0;
+	rpl::variable<bool> _enabled = false;
+	rpl::variable<bool> _canChange = false;
+	base::Timer _appConfigReloadTimer;
+	bool _appConfigReloadForce = false;
+	bool _loadPending = false;
+	bool _loaded = false;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_single_message_search.cpp

@@ -0,0 +1,237 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_single_message_search.h"
+
+#include "main/main_session.h"
+#include "data/data_session.h"
+#include "data/data_channel.h"
+#include "data/data_search_controller.h"
+#include "core/local_url_handlers.h"
+#include "history/history_item.h"
+#include "base/qthelp_url.h"
+#include "apiwrap.h"
+
+namespace Api {
+namespace {
+
+using Key = details::SingleMessageSearchKey;
+
+Key ExtractKey(const QString &query) {
+	const auto trimmed = query.trimmed();
+	const auto local = Core::TryConvertUrlToLocal(trimmed);
+	const auto check = local.isEmpty() ? trimmed : local;
+	const auto parse = [&] {
+		const auto delimeter = check.indexOf('?');
+		return (delimeter > 0)
+			? qthelp::url_parse_params(
+				check.mid(delimeter + 1),
+				qthelp::UrlParamNameTransform::ToLower)
+			: QMap<QString, QString>();
+	};
+	if (check.startsWith(u"tg://privatepost"_q, Qt::CaseInsensitive)) {
+		const auto params = parse();
+		const auto channel = params.value("channel");
+		const auto post = params.value("post").toInt();
+		return (channel.toULongLong() && post) ? Key{ channel, post } : Key();
+	} else if (check.startsWith(u"tg://resolve"_q, Qt::CaseInsensitive)) {
+		const auto params = parse();
+		const auto domain = params.value("domain");
+		const auto post = params.value("post").toInt();
+		return (!domain.isEmpty() && post) ? Key{ domain, post } : Key();
+	}
+	return Key();
+}
+
+} // namespace
+
+SingleMessageSearch::SingleMessageSearch(not_null<Main::Session*> session)
+: _session(session) {
+}
+
+SingleMessageSearch::~SingleMessageSearch() {
+	clear();
+}
+
+void SingleMessageSearch::clear() {
+	_cache.clear();
+	_requestKey = Key();
+	_session->api().request(base::take(_requestId)).cancel();
+}
+
+std::optional<HistoryItem*> SingleMessageSearch::lookup(
+		const QString &query,
+		Fn<void()> ready) {
+	const auto key = ExtractKey(query);
+	if (!key) {
+		return nullptr;
+	}
+	const auto i = _cache.find(key);
+	if (i != end(_cache)) {
+		return _session->data().message(i->second);
+	}
+	if (!(_requestKey == key)) {
+		_session->api().request(base::take(_requestId)).cancel();
+		_requestKey = key;
+	}
+	return performLookup(ready);
+}
+
+std::optional<HistoryItem*> SingleMessageSearch::performLookupByChannel(
+		not_null<ChannelData*> channel,
+		Fn<void()> ready) {
+	Expects(!_requestKey.empty());
+
+	const auto postId = _requestKey.postId;
+	if (const auto item = _session->data().message(channel->id, postId)) {
+		_cache.emplace(_requestKey, item->fullId());
+		return item;
+	} else if (!ready) {
+		return nullptr;
+	}
+
+	const auto fail = [=] {
+		_cache.emplace(_requestKey, FullMsgId());
+		ready();
+	};
+	_requestId = _session->api().request(MTPchannels_GetMessages(
+		channel->inputChannel(),
+		MTP_vector<MTPInputMessage>(1, MTP_inputMessageID(MTP_int(postId)))
+	)).done([=](const MTPmessages_Messages &result) {
+		const auto received = Api::ParseSearchResult(
+			channel,
+			Storage::SharedMediaType::kCount,
+			postId,
+			Data::LoadDirection::Around,
+			result);
+		if (!received.messageIds.empty()
+			&& received.messageIds.front() == postId) {
+			_cache.emplace(
+				_requestKey,
+				FullMsgId(channel->id, postId));
+			ready();
+		} else {
+			fail();
+		}
+	}).fail([=] {
+		fail();
+	}).send();
+
+	return std::nullopt;
+}
+
+std::optional<HistoryItem*> SingleMessageSearch::performLookupById(
+		ChannelId channelId,
+		Fn<void()> ready) {
+	Expects(!_requestKey.empty());
+
+	if (const auto channel = _session->data().channelLoaded(channelId)) {
+		return performLookupByChannel(channel, ready);
+	} else if (!ready) {
+		return nullptr;
+	}
+
+	const auto fail = [=] {
+		_cache.emplace(_requestKey, FullMsgId());
+		ready();
+	};
+	_requestId = _session->api().request(MTPchannels_GetChannels(
+		MTP_vector<MTPInputChannel>(
+			1,
+			MTP_inputChannel(MTP_long(channelId.bare), MTP_long(0)))
+	)).done([=](const MTPmessages_Chats &result) {
+		result.match([&](const auto &data) {
+			const auto peer = _session->data().processChats(data.vchats());
+			if (peer && peer->id == peerFromChannel(channelId)) {
+				if (performLookupByChannel(peer->asChannel(), ready)) {
+					ready();
+				}
+			} else {
+				fail();
+			}
+		});
+	}).fail([=] {
+		fail();
+	}).send();
+
+	return std::nullopt;
+}
+
+std::optional<HistoryItem*> SingleMessageSearch::performLookupByUsername(
+		const QString &username,
+		Fn<void()> ready) {
+	Expects(!_requestKey.empty());
+
+	if (const auto peer = _session->data().peerByUsername(username)) {
+		if (const auto channel = peer->asChannel()) {
+			return performLookupByChannel(channel, ready);
+		}
+		_cache.emplace(_requestKey, FullMsgId());
+		return nullptr;
+	} else if (!ready) {
+		return nullptr;
+	}
+
+	const auto fail = [=] {
+		_cache.emplace(_requestKey, FullMsgId());
+		ready();
+	};
+	_requestId = _session->api().request(MTPcontacts_ResolveUsername(
+		MTP_flags(0),
+		MTP_string(username),
+		MTP_string()
+	)).done([=](const MTPcontacts_ResolvedPeer &result) {
+		result.match([&](const MTPDcontacts_resolvedPeer &data) {
+			_session->data().processUsers(data.vusers());
+			_session->data().processChats(data.vchats());
+			const auto peerId = peerFromMTP(data.vpeer());
+			const auto peer = peerId
+				? _session->data().peerLoaded(peerId)
+				: nullptr;
+			if (const auto channel = peer ? peer->asChannel() : nullptr) {
+				if (performLookupByChannel(channel, ready)) {
+					ready();
+				}
+			} else {
+				fail();
+			}
+		});
+	}).fail([=] {
+		fail();
+	}).send();
+
+	return std::nullopt;
+}
+
+std::optional<HistoryItem*> SingleMessageSearch::performLookup(
+		Fn<void()> ready) {
+	Expects(!_requestKey.empty());
+
+	if (!_requestKey.domainOrId[0].isDigit()) {
+		return performLookupByUsername(_requestKey.domainOrId, ready);
+	}
+	const auto channelId = ChannelId(_requestKey.domainOrId.toULongLong());
+	return performLookupById(channelId, ready);
+}
+
+QString ConvertPeerSearchQuery(const QString &query) {
+	const auto trimmed = query.trimmed();
+	const auto local = Core::TryConvertUrlToLocal(trimmed);
+	const auto check = local.isEmpty() ? trimmed : local;
+	if (!check.startsWith(u"tg://resolve"_q, Qt::CaseInsensitive)) {
+		return query;
+	}
+	const auto delimeter = check.indexOf('?');
+	const auto params = (delimeter > 0)
+		? qthelp::url_parse_params(
+			check.mid(delimeter + 1),
+			qthelp::UrlParamNameTransform::ToLower)
+		: QMap<QString, QString>();
+	return params.value("domain", query);
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_single_message_search.h

@@ -0,0 +1,76 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+namespace details {
+
+struct SingleMessageSearchKey {
+	QString domainOrId;
+	MsgId postId = 0;
+
+	[[nodiscard]] bool empty() const {
+		return domainOrId.isEmpty() || !postId;
+	}
+	[[nodiscard]] explicit operator bool() const {
+		return !empty();
+	}
+	[[nodiscard]] bool operator<(const SingleMessageSearchKey &other) const {
+		return std::tie(domainOrId, postId)
+			< std::tie(other.domainOrId, other.postId);
+	}
+	[[nodiscard]] bool operator==(
+			const SingleMessageSearchKey &other) const {
+		return std::tie(domainOrId, postId)
+			== std::tie(other.domainOrId, other.postId);
+	}
+};
+
+} // namespace details
+
+class SingleMessageSearch {
+public:
+	explicit SingleMessageSearch(not_null<Main::Session*> session);
+	~SingleMessageSearch();
+
+	void clear();
+
+	// If 'ready' callback is empty, the result must not be 'nullopt'.
+	[[nodiscard]] std::optional<HistoryItem*> lookup(
+		const QString &query,
+		Fn<void()> ready = nullptr);
+
+private:
+	using Key = details::SingleMessageSearchKey;
+
+	[[nodiscard]] std::optional<HistoryItem*> performLookup(
+		Fn<void()> ready);
+	[[nodiscard]] std::optional<HistoryItem*> performLookupById(
+		ChannelId channelId,
+		Fn<void()> ready);
+	[[nodiscard]] std::optional<HistoryItem*> performLookupByUsername(
+		const QString &username,
+		Fn<void()> ready);
+	[[nodiscard]] std::optional<HistoryItem*> performLookupByChannel(
+		not_null<ChannelData*> channel,
+		Fn<void()> ready);
+
+	const not_null<Main::Session*> _session;
+	std::map<Key, FullMsgId> _cache;
+	mtpRequestId _requestId = 0;
+	Key _requestKey;
+
+};
+
+[[nodiscard]] QString ConvertPeerSearchQuery(const QString &query);
+
+} // namespace Api

Telegram/SourceFiles/api/api_statistics.cpp

@@ -0,0 +1,794 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_statistics.h"
+
+#include "api/api_credits_history_entry.h"
+#include "api/api_statistics_data_deserialize.h"
+#include "apiwrap.h"
+#include "base/unixtime.h"
+#include "data/data_channel.h"
+#include "data/data_session.h"
+#include "data/data_stories.h"
+#include "data/data_story.h"
+#include "data/data_user.h"
+#include "history/history.h"
+#include "main/main_session.h"
+
+namespace Api {
+namespace {
+
+[[nodiscard]] Data::StatisticalValue StatisticalValueFromTL(
+		const MTPStatsAbsValueAndPrev &tl) {
+	const auto current = tl.data().vcurrent().v;
+	const auto previous = tl.data().vprevious().v;
+	return Data::StatisticalValue{
+		.value = current,
+		.previousValue = previous,
+		.growthRatePercentage = previous
+			? std::abs((current - previous) / float64(previous) * 100.)
+			: 0,
+	};
+}
+
+[[nodiscard]] Data::ChannelStatistics ChannelStatisticsFromTL(
+		const MTPDstats_broadcastStats &data) {
+	const auto &tlUnmuted = data.venabled_notifications().data();
+	const auto unmuted = (!tlUnmuted.vtotal().v)
+		? 0.
+		: std::clamp(
+			tlUnmuted.vpart().v / tlUnmuted.vtotal().v * 100.,
+			0.,
+			100.);
+	using Recent = MTPPostInteractionCounters;
+	auto recentMessages = ranges::views::all(
+		data.vrecent_posts_interactions().v
+	) | ranges::views::transform([&](const Recent &tl) {
+		return tl.match([&](const MTPDpostInteractionCountersStory &data) {
+			return Data::StatisticsMessageInteractionInfo{
+				.storyId = data.vstory_id().v,
+				.viewsCount = data.vviews().v,
+				.forwardsCount = data.vforwards().v,
+				.reactionsCount = data.vreactions().v,
+			};
+		}, [&](const MTPDpostInteractionCountersMessage &data) {
+			return Data::StatisticsMessageInteractionInfo{
+				.messageId = data.vmsg_id().v,
+				.viewsCount = data.vviews().v,
+				.forwardsCount = data.vforwards().v,
+				.reactionsCount = data.vreactions().v,
+			};
+		});
+	}) | ranges::to_vector;
+
+	return {
+		.startDate = data.vperiod().data().vmin_date().v,
+		.endDate = data.vperiod().data().vmax_date().v,
+
+		.memberCount = StatisticalValueFromTL(data.vfollowers()),
+		.meanViewCount = StatisticalValueFromTL(data.vviews_per_post()),
+		.meanShareCount = StatisticalValueFromTL(data.vshares_per_post()),
+		.meanReactionCount = StatisticalValueFromTL(
+			data.vreactions_per_post()),
+
+		.meanStoryViewCount = StatisticalValueFromTL(
+			data.vviews_per_story()),
+		.meanStoryShareCount = StatisticalValueFromTL(
+			data.vshares_per_story()),
+		.meanStoryReactionCount = StatisticalValueFromTL(
+			data.vreactions_per_story()),
+
+		.enabledNotificationsPercentage = unmuted,
+
+		.memberCountGraph = StatisticalGraphFromTL(
+			data.vgrowth_graph()),
+
+		.joinGraph = StatisticalGraphFromTL(
+			data.vfollowers_graph()),
+
+		.muteGraph = StatisticalGraphFromTL(
+			data.vmute_graph()),
+
+		.viewCountByHourGraph = StatisticalGraphFromTL(
+			data.vtop_hours_graph()),
+
+		.viewCountBySourceGraph = StatisticalGraphFromTL(
+			data.vviews_by_source_graph()),
+
+		.joinBySourceGraph = StatisticalGraphFromTL(
+			data.vnew_followers_by_source_graph()),
+
+		.languageGraph = StatisticalGraphFromTL(
+			data.vlanguages_graph()),
+
+		.messageInteractionGraph = StatisticalGraphFromTL(
+			data.vinteractions_graph()),
+
+		.instantViewInteractionGraph = StatisticalGraphFromTL(
+			data.viv_interactions_graph()),
+
+		.reactionsByEmotionGraph = StatisticalGraphFromTL(
+			data.vreactions_by_emotion_graph()),
+
+		.storyInteractionsGraph = StatisticalGraphFromTL(
+			data.vstory_interactions_graph()),
+
+		.storyReactionsByEmotionGraph = StatisticalGraphFromTL(
+			data.vstory_reactions_by_emotion_graph()),
+
+		.recentMessageInteractions = std::move(recentMessages),
+	};
+}
+
+[[nodiscard]] Data::SupergroupStatistics SupergroupStatisticsFromTL(
+		const MTPDstats_megagroupStats &data) {
+	using Senders = MTPStatsGroupTopPoster;
+	using Administrators = MTPStatsGroupTopAdmin;
+	using Inviters = MTPStatsGroupTopInviter;
+
+	auto topSenders = ranges::views::all(
+		data.vtop_posters().v
+	) | ranges::views::transform([&](const Senders &tl) {
+		return Data::StatisticsMessageSenderInfo{
+			.userId = UserId(tl.data().vuser_id().v),
+			.sentMessageCount = tl.data().vmessages().v,
+			.averageCharacterCount = tl.data().vavg_chars().v,
+		};
+	}) | ranges::to_vector;
+	auto topAdministrators = ranges::views::all(
+		data.vtop_admins().v
+	) | ranges::views::transform([&](const Administrators &tl) {
+		return Data::StatisticsAdministratorActionsInfo{
+			.userId = UserId(tl.data().vuser_id().v),
+			.deletedMessageCount = tl.data().vdeleted().v,
+			.bannedUserCount = tl.data().vkicked().v,
+			.restrictedUserCount = tl.data().vbanned().v,
+		};
+	}) | ranges::to_vector;
+	auto topInviters = ranges::views::all(
+		data.vtop_inviters().v
+	) | ranges::views::transform([&](const Inviters &tl) {
+		return Data::StatisticsInviterInfo{
+			.userId = UserId(tl.data().vuser_id().v),
+			.addedMemberCount = tl.data().vinvitations().v,
+		};
+	}) | ranges::to_vector;
+
+	return {
+		.startDate = data.vperiod().data().vmin_date().v,
+		.endDate = data.vperiod().data().vmax_date().v,
+
+		.memberCount = StatisticalValueFromTL(data.vmembers()),
+		.messageCount = StatisticalValueFromTL(data.vmessages()),
+		.viewerCount = StatisticalValueFromTL(data.vviewers()),
+		.senderCount = StatisticalValueFromTL(data.vposters()),
+
+		.memberCountGraph = StatisticalGraphFromTL(
+			data.vgrowth_graph()),
+
+		.joinGraph = StatisticalGraphFromTL(
+			data.vmembers_graph()),
+
+		.joinBySourceGraph = StatisticalGraphFromTL(
+			data.vnew_members_by_source_graph()),
+
+		.languageGraph = StatisticalGraphFromTL(
+			data.vlanguages_graph()),
+
+		.messageContentGraph = StatisticalGraphFromTL(
+			data.vmessages_graph()),
+
+		.actionGraph = StatisticalGraphFromTL(
+			data.vactions_graph()),
+
+		.dayGraph = StatisticalGraphFromTL(
+			data.vtop_hours_graph()),
+
+		.weekGraph = StatisticalGraphFromTL(
+			data.vweekdays_graph()),
+
+		.topSenders = std::move(topSenders),
+		.topAdministrators = std::move(topAdministrators),
+		.topInviters = std::move(topInviters),
+	};
+}
+
+} // namespace
+
+Statistics::Statistics(not_null<ChannelData*> channel)
+: StatisticsRequestSender(channel) {
+}
+
+rpl::producer<rpl::no_value, QString> Statistics::request() {
+	return [=](auto consumer) {
+		auto lifetime = rpl::lifetime();
+
+		if (!channel()->isMegagroup()) {
+			makeRequest(MTPstats_GetBroadcastStats(
+				MTP_flags(MTPstats_GetBroadcastStats::Flags(0)),
+				channel()->inputChannel()
+			)).done([=](const MTPstats_BroadcastStats &result) {
+				_channelStats = ChannelStatisticsFromTL(result.data());
+				consumer.put_done();
+			}).fail([=](const MTP::Error &error) {
+				consumer.put_error_copy(error.type());
+			}).send();
+		} else {
+			makeRequest(MTPstats_GetMegagroupStats(
+				MTP_flags(MTPstats_GetMegagroupStats::Flags(0)),
+				channel()->inputChannel()
+			)).done([=](const MTPstats_MegagroupStats &result) {
+				const auto &data = result.data();
+				_supergroupStats = SupergroupStatisticsFromTL(data);
+				channel()->owner().processUsers(data.vusers());
+				consumer.put_done();
+			}).fail([=](const MTP::Error &error) {
+				consumer.put_error_copy(error.type());
+			}).send();
+		}
+
+		return lifetime;
+	};
+}
+
+Statistics::GraphResult Statistics::requestZoom(
+		const QString &token,
+		float64 x) {
+	return [=](auto consumer) {
+		auto lifetime = rpl::lifetime();
+		const auto wasEmpty = _zoomDeque.empty();
+		_zoomDeque.push_back([=] {
+			makeRequest(MTPstats_LoadAsyncGraph(
+				MTP_flags(x
+					? MTPstats_LoadAsyncGraph::Flag::f_x
+					: MTPstats_LoadAsyncGraph::Flag(0)),
+				MTP_string(token),
+				MTP_long(x)
+			)).done([=](const MTPStatsGraph &result) {
+				consumer.put_next(StatisticalGraphFromTL(result));
+				consumer.put_done();
+				if (!_zoomDeque.empty()) {
+					_zoomDeque.pop_front();
+					if (!_zoomDeque.empty()) {
+						_zoomDeque.front()();
+					}
+				}
+			}).fail([=](const MTP::Error &error) {
+				consumer.put_error_copy(error.type());
+			}).send();
+		});
+		if (wasEmpty) {
+			_zoomDeque.front()();
+		}
+
+		return lifetime;
+	};
+}
+
+Data::ChannelStatistics Statistics::channelStats() const {
+	return _channelStats;
+}
+
+Data::SupergroupStatistics Statistics::supergroupStats() const {
+	return _supergroupStats;
+}
+
+PublicForwards::PublicForwards(
+	not_null<ChannelData*> channel,
+	Data::RecentPostId fullId)
+: StatisticsRequestSender(channel)
+, _fullId(fullId) {
+}
+
+void PublicForwards::request(
+		const Data::PublicForwardsSlice::OffsetToken &token,
+		Fn<void(Data::PublicForwardsSlice)> done) {
+	if (_requestId) {
+		return;
+	}
+	const auto channel = StatisticsRequestSender::channel();
+	const auto processResult = [=](const MTPstats_PublicForwards &tl) {
+		using Messages = QVector<Data::RecentPostId>;
+		_requestId = 0;
+
+		const auto &data = tl.data();
+		auto &owner = channel->owner();
+
+		owner.processUsers(data.vusers());
+		owner.processChats(data.vchats());
+
+		const auto nextToken = data.vnext_offset()
+			? qs(*data.vnext_offset())
+			: Data::PublicForwardsSlice::OffsetToken();
+
+		const auto fullCount = data.vcount().v;
+
+		auto recentList = Messages(data.vforwards().v.size());
+		for (const auto &tlForward : data.vforwards().v) {
+			tlForward.match([&](const MTPDpublicForwardMessage &data) {
+				const auto &message = data.vmessage();
+				const auto msgId = IdFromMessage(message);
+				const auto peerId = PeerFromMessage(message);
+				const auto lastDate = DateFromMessage(message);
+				if (owner.peerLoaded(peerId)) {
+					if (!lastDate) {
+						return;
+					}
+					owner.addNewMessage(
+						message,
+						MessageFlags(),
+						NewMessageType::Existing);
+					recentList.push_back({ .messageId = { peerId, msgId } });
+				}
+			}, [&](const MTPDpublicForwardStory &data) {
+				const auto story = owner.stories().applySingle(
+					peerFromMTP(data.vpeer()),
+					data.vstory());
+				if (story) {
+					recentList.push_back({ .storyId = story->fullId() });
+				}
+			});
+		}
+
+		const auto allLoaded = nextToken.isEmpty() || (nextToken == token);
+		_lastTotal = std::max(_lastTotal, fullCount);
+		done({
+			.list = std::move(recentList),
+			.total = _lastTotal,
+			.allLoaded = allLoaded,
+			.token = nextToken,
+		});
+	};
+	const auto processFail = [=] {
+		_requestId = 0;
+		done({});
+	};
+
+	constexpr auto kLimit = tl::make_int(100);
+	if (_fullId.messageId) {
+		_requestId = makeRequest(MTPstats_GetMessagePublicForwards(
+			channel->inputChannel(),
+			MTP_int(_fullId.messageId.msg),
+			MTP_string(token),
+			kLimit
+		)).done(processResult).fail(processFail).send();
+	} else if (_fullId.storyId) {
+		_requestId = makeRequest(MTPstats_GetStoryPublicForwards(
+			channel->input(),
+			MTP_int(_fullId.storyId.story),
+			MTP_string(token),
+			kLimit
+		)).done(processResult).fail(processFail).send();
+	}
+}
+
+MessageStatistics::MessageStatistics(
+	not_null<ChannelData*> channel,
+	FullMsgId fullId)
+: StatisticsRequestSender(channel)
+, _publicForwards(channel, { .messageId = fullId })
+, _fullId(fullId) {
+}
+
+MessageStatistics::MessageStatistics(
+	not_null<ChannelData*> channel,
+	FullStoryId storyId)
+: StatisticsRequestSender(channel)
+, _publicForwards(channel, { .storyId = storyId })
+, _storyId(storyId) {
+}
+
+Data::PublicForwardsSlice MessageStatistics::firstSlice() const {
+	return _firstSlice;
+}
+
+void MessageStatistics::request(Fn<void(Data::MessageStatistics)> done) {
+	if (channel()->isMegagroup() && !_storyId) {
+		return;
+	}
+	const auto requestFirstPublicForwards = [=](
+			const Data::StatisticalGraph &messageGraph,
+			const Data::StatisticalGraph &reactionsGraph,
+			const Data::StatisticsMessageInteractionInfo &info) {
+		const auto callback = [=](Data::PublicForwardsSlice slice) {
+			const auto total = slice.total;
+			_firstSlice = std::move(slice);
+			done({
+				.messageInteractionGraph = messageGraph,
+				.reactionsByEmotionGraph = reactionsGraph,
+				.publicForwards = total,
+				.privateForwards = info.forwardsCount - total,
+				.views = info.viewsCount,
+				.reactions = info.reactionsCount,
+			});
+		};
+		_publicForwards.request({}, callback);
+	};
+
+	const auto requestPrivateForwards = [=](
+			const Data::StatisticalGraph &messageGraph,
+			const Data::StatisticalGraph &reactionsGraph) {
+		api().request(MTPchannels_GetMessages(
+			channel()->inputChannel(),
+			MTP_vector<MTPInputMessage>(
+				1,
+				MTP_inputMessageID(MTP_int(_fullId.msg))))
+		).done([=](const MTPmessages_Messages &result) {
+			const auto process = [&](const MTPVector<MTPMessage> &messages) {
+				const auto &message = messages.v.front();
+				return message.match([&](const MTPDmessage &data) {
+					auto reactionsCount = 0;
+					if (const auto tlReactions = data.vreactions()) {
+						const auto &tlCounts = tlReactions->data().vresults();
+						for (const auto &tlCount : tlCounts.v) {
+							reactionsCount += tlCount.data().vcount().v;
+						}
+					}
+					return Data::StatisticsMessageInteractionInfo{
+						.messageId = IdFromMessage(message),
+						.viewsCount = data.vviews()
+							? data.vviews()->v
+							: 0,
+						.forwardsCount = data.vforwards()
+							? data.vforwards()->v
+							: 0,
+						.reactionsCount = reactionsCount,
+					};
+				}, [](const MTPDmessageEmpty &) {
+					return Data::StatisticsMessageInteractionInfo();
+				}, [](const MTPDmessageService &) {
+					return Data::StatisticsMessageInteractionInfo();
+				});
+			};
+
+			auto info = result.match([&](const MTPDmessages_messages &data) {
+				return process(data.vmessages());
+			}, [&](const MTPDmessages_messagesSlice &data) {
+				return process(data.vmessages());
+			}, [&](const MTPDmessages_channelMessages &data) {
+				return process(data.vmessages());
+			}, [](const MTPDmessages_messagesNotModified &) {
+				return Data::StatisticsMessageInteractionInfo();
+			});
+
+			requestFirstPublicForwards(
+				messageGraph,
+				reactionsGraph,
+				std::move(info));
+		}).fail([=](const MTP::Error &error) {
+			requestFirstPublicForwards(messageGraph, reactionsGraph, {});
+		}).send();
+	};
+
+	const auto requestStoryPrivateForwards = [=](
+			const Data::StatisticalGraph &messageGraph,
+			const Data::StatisticalGraph &reactionsGraph) {
+		api().request(MTPstories_GetStoriesByID(
+			channel()->input(),
+			MTP_vector<MTPint>(1, MTP_int(_storyId.story)))
+		).done([=](const MTPstories_Stories &result) {
+			const auto &storyItem = result.data().vstories().v.front();
+			auto info = storyItem.match([&](const MTPDstoryItem &data) {
+				if (!data.vviews()) {
+					return Data::StatisticsMessageInteractionInfo();
+				}
+				const auto &tlViews = data.vviews()->data();
+				return Data::StatisticsMessageInteractionInfo{
+					.storyId = data.vid().v,
+					.viewsCount = tlViews.vviews_count().v,
+					.forwardsCount = tlViews.vforwards_count().value_or(0),
+					.reactionsCount = tlViews.vreactions_count().value_or(0),
+				};
+			}, [](const auto &) {
+				return Data::StatisticsMessageInteractionInfo();
+			});
+
+			requestFirstPublicForwards(
+				messageGraph,
+				reactionsGraph,
+				std::move(info));
+		}).fail([=](const MTP::Error &error) {
+			requestFirstPublicForwards(messageGraph, reactionsGraph, {});
+		}).send();
+	};
+
+	if (_storyId) {
+		makeRequest(MTPstats_GetStoryStats(
+			MTP_flags(MTPstats_GetStoryStats::Flags(0)),
+			channel()->input(),
+			MTP_int(_storyId.story)
+		)).done([=](const MTPstats_StoryStats &result) {
+			const auto &data = result.data();
+			requestStoryPrivateForwards(
+				StatisticalGraphFromTL(data.vviews_graph()),
+				StatisticalGraphFromTL(data.vreactions_by_emotion_graph()));
+		}).fail([=](const MTP::Error &error) {
+			requestStoryPrivateForwards({}, {});
+		}).send();
+	} else {
+		makeRequest(MTPstats_GetMessageStats(
+			MTP_flags(MTPstats_GetMessageStats::Flags(0)),
+			channel()->inputChannel(),
+			MTP_int(_fullId.msg.bare)
+		)).done([=](const MTPstats_MessageStats &result) {
+			const auto &data = result.data();
+			requestPrivateForwards(
+				StatisticalGraphFromTL(data.vviews_graph()),
+				StatisticalGraphFromTL(data.vreactions_by_emotion_graph()));
+		}).fail([=](const MTP::Error &error) {
+			requestPrivateForwards({}, {});
+		}).send();
+	}
+}
+
+Boosts::Boosts(not_null<PeerData*> peer)
+: _peer(peer)
+, _api(&peer->session().api().instance()) {
+}
+
+rpl::producer<rpl::no_value, QString> Boosts::request() {
+	return [=](auto consumer) {
+		auto lifetime = rpl::lifetime();
+		const auto channel = _peer->asChannel();
+		if (!channel) {
+			return lifetime;
+		}
+
+		_api.request(MTPpremium_GetBoostsStatus(
+			_peer->input()
+		)).done([=](const MTPpremium_BoostsStatus &result) {
+			const auto &data = result.data();
+			channel->updateLevelHint(data.vlevel().v);
+			const auto hasPremium = !!data.vpremium_audience();
+			const auto premiumMemberCount = hasPremium
+				? std::max(0, int(data.vpremium_audience()->data().vpart().v))
+				: 0;
+			const auto participantCount = hasPremium
+				? std::max(
+					int(data.vpremium_audience()->data().vtotal().v),
+					premiumMemberCount)
+				: 0;
+			const auto premiumMemberPercentage = (participantCount > 0)
+				? (100. * premiumMemberCount / participantCount)
+				: 0;
+
+			const auto slots = data.vmy_boost_slots();
+			_boostStatus.overview = Data::BoostsOverview{
+				.group = channel->isMegagroup(),
+				.mine = slots ? int(slots->v.size()) : 0,
+				.level = std::max(data.vlevel().v, 0),
+				.boostCount = std::max(
+					data.vboosts().v,
+					data.vcurrent_level_boosts().v),
+				.currentLevelBoostCount = data.vcurrent_level_boosts().v,
+				.nextLevelBoostCount = data.vnext_level_boosts()
+					? data.vnext_level_boosts()->v
+					: 0,
+				.premiumMemberCount = premiumMemberCount,
+				.premiumMemberPercentage = premiumMemberPercentage,
+			};
+			_boostStatus.link = qs(data.vboost_url());
+
+			if (data.vprepaid_giveaways()) {
+				_boostStatus.prepaidGiveaway = ranges::views::all(
+					data.vprepaid_giveaways()->v
+				) | ranges::views::transform([](const MTPPrepaidGiveaway &r) {
+					return r.match([&](const MTPDprepaidGiveaway &data) {
+						return Data::BoostPrepaidGiveaway{
+							.date = base::unixtime::parse(data.vdate().v),
+							.id = data.vid().v,
+							.months = data.vmonths().v,
+							.quantity = data.vquantity().v,
+						};
+					}, [&](const MTPDprepaidStarsGiveaway &data) {
+						return Data::BoostPrepaidGiveaway{
+							.date = base::unixtime::parse(data.vdate().v),
+							.id = data.vid().v,
+							.credits = data.vstars().v,
+							.quantity = data.vquantity().v,
+							.boosts = data.vboosts().v,
+						};
+					});
+				}) | ranges::to_vector;
+			}
+
+			using namespace Data;
+			requestBoosts({ .gifts = false }, [=](BoostsListSlice &&slice) {
+				_boostStatus.firstSliceBoosts = std::move(slice);
+				requestBoosts({ .gifts = true }, [=](BoostsListSlice &&s) {
+					_boostStatus.firstSliceGifts = std::move(s);
+					consumer.put_done();
+				});
+			});
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).send();
+
+		return lifetime;
+	};
+}
+
+void Boosts::requestBoosts(
+		const Data::BoostsListSlice::OffsetToken &token,
+		Fn<void(Data::BoostsListSlice)> done) {
+	if (_requestId) {
+		return;
+	}
+	constexpr auto kTlFirstSlice = tl::make_int(kFirstSlice);
+	constexpr auto kTlLimit = tl::make_int(kLimit);
+	const auto gifts = token.gifts;
+	_requestId = _api.request(MTPpremium_GetBoostsList(
+		gifts
+			? MTP_flags(MTPpremium_GetBoostsList::Flag::f_gifts)
+			: MTP_flags(0),
+		_peer->input(),
+		MTP_string(token.next),
+		token.next.isEmpty() ? kTlFirstSlice : kTlLimit
+	)).done([=](const MTPpremium_BoostsList &result) {
+		_requestId = 0;
+
+		const auto &data = result.data();
+		_peer->owner().processUsers(data.vusers());
+
+		auto list = std::vector<Data::Boost>();
+		list.reserve(data.vboosts().v.size());
+		constexpr auto kMonthsDivider = int(30 * 86400);
+		for (const auto &boost : data.vboosts().v) {
+			const auto &data = boost.data();
+			const auto path = data.vused_gift_slug()
+				? (u"giftcode/"_q + qs(data.vused_gift_slug()->v))
+				: QString();
+			auto giftCodeLink = !path.isEmpty()
+				? Data::GiftCodeLink{
+					_peer->session().createInternalLink(path),
+					_peer->session().createInternalLinkFull(path),
+					qs(data.vused_gift_slug()->v),
+				}
+				: Data::GiftCodeLink();
+			list.push_back({
+				.id = qs(data.vid()),
+				.userId = UserId(data.vuser_id().value_or_empty()),
+				.giveawayMessage = data.vgiveaway_msg_id()
+					? FullMsgId{ _peer->id, data.vgiveaway_msg_id()->v }
+					: FullMsgId(),
+				.date = base::unixtime::parse(data.vdate().v),
+				.expiresAt = base::unixtime::parse(data.vexpires().v),
+				.expiresAfterMonths = ((data.vexpires().v - data.vdate().v)
+					/ kMonthsDivider),
+				.giftCodeLink = std::move(giftCodeLink),
+				.multiplier = data.vmultiplier().value_or_empty(),
+				.credits = data.vstars().value_or_empty(),
+				.isGift = data.is_gift(),
+				.isGiveaway = data.is_giveaway(),
+				.isUnclaimed = data.is_unclaimed(),
+			});
+		}
+		done(Data::BoostsListSlice{
+			.list = std::move(list),
+			.multipliedTotal = data.vcount().v,
+			.allLoaded = (data.vcount().v == data.vboosts().v.size()),
+			.token = Data::BoostsListSlice::OffsetToken{
+				.next = data.vnext_offset()
+					? qs(*data.vnext_offset())
+					: QString(),
+				.gifts = gifts,
+			},
+		});
+	}).fail([=] {
+		_requestId = 0;
+	}).send();
+}
+
+Data::BoostStatus Boosts::boostStatus() const {
+	return _boostStatus;
+}
+
+EarnStatistics::EarnStatistics(not_null<PeerData*> peer)
+: StatisticsRequestSender(peer)
+, _isUser(peer->isUser()) {
+}
+
+rpl::producer<rpl::no_value, QString> EarnStatistics::request() {
+	return [=](auto consumer) {
+		auto lifetime = rpl::lifetime();
+
+		api().request(MTPpayments_GetStarsRevenueStats(
+			MTP_flags(MTPpayments_getStarsRevenueStats::Flag::f_ton),
+			(_isUser ? user()->input() : channel()->input())
+		)).done([=](const MTPpayments_StarsRevenueStats &result) {
+			const auto &data = result.data();
+			const auto &balances = data.vstatus().data();
+			const auto amount = [](const auto &a) {
+				return CreditsAmountFromTL(a);
+			};
+			_data = Data::EarnStatistics{
+				.topHoursGraph = data.vtop_hours_graph()
+					? StatisticalGraphFromTL(*data.vtop_hours_graph())
+					: Data::StatisticalGraph(),
+				.revenueGraph = StatisticalGraphFromTL(data.vrevenue_graph()),
+				.currentBalance = amount(balances.vcurrent_balance()),
+				.availableBalance = amount(balances.vavailable_balance()),
+				.overallRevenue = amount(balances.voverall_revenue()),
+				.usdRate = data.vusd_rate().v,
+			};
+
+			requestHistory({}, [=](Data::EarnHistorySlice &&slice) {
+				_data.firstHistorySlice = std::move(slice);
+
+				if (!_isUser) {
+					api().request(
+						MTPchannels_GetFullChannel(channel()->inputChannel())
+					).done([=](const MTPmessages_ChatFull &result) {
+						result.data().vfull_chat().match([&](
+								const MTPDchannelFull &d) {
+							_data.switchedOff = d.is_restricted_sponsored();
+						}, [](const auto &) {
+						});
+						consumer.put_done();
+					}).fail([=](const MTP::Error &error) {
+						consumer.put_error_copy(error.type());
+					}).send();
+				} else {
+					consumer.put_done();
+				}
+			});
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_error_copy(error.type());
+		}).send();
+
+		return lifetime;
+	};
+}
+
+void EarnStatistics::requestHistory(
+		const Data::EarnHistorySlice::OffsetToken &token,
+		Fn<void(Data::EarnHistorySlice)> done) {
+	if (_requestId) {
+		return;
+	}
+
+	constexpr auto kTlFirstSlice = tl::make_int(kFirstSlice);
+	constexpr auto kTlLimit = tl::make_int(kLimit);
+
+	_requestId = api().request(MTPpayments_GetStarsTransactions(
+		MTP_flags(MTPpayments_getStarsTransactions::Flag::f_ton),
+		MTP_string(), // Subscription ID.
+		(_isUser ? user()->input() : channel()->input()),
+		MTP_string(token),
+		token.isEmpty() ? kTlFirstSlice : kTlLimit
+	)).done([=](const MTPpayments_StarsStatus &result) {
+		_requestId = 0;
+
+		const auto nextToken = result.data().vnext_offset().value_or_empty();
+
+		const auto tlTransactions
+			= result.data().vhistory().value_or_empty();
+
+		const auto peer = _isUser ? (PeerData*)user() : (PeerData*)channel();
+		auto list = ranges::views::all(
+			tlTransactions
+		) | ranges::views::transform([=](const auto &d) {
+			return CreditsHistoryEntryFromTL(d, peer);
+		}) | ranges::to_vector;
+		done(Data::EarnHistorySlice{
+			.list = std::move(list),
+			.total = int(tlTransactions.size()),
+			// .total = result.data().vcount().v,
+			.allLoaded = nextToken.isEmpty(),
+			.token = Data::EarnHistorySlice::OffsetToken(nextToken),
+		});
+	}).fail([=] {
+		done({});
+		_requestId = 0;
+	}).send();
+}
+
+Data::EarnStatistics EarnStatistics::data() const {
+	return _data;
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_statistics.h

@@ -0,0 +1,127 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "api/api_statistics_sender.h"
+#include "data/data_boosts.h"
+#include "data/data_channel_earn.h"
+#include "data/data_statistics.h"
+
+class ChannelData;
+class PeerData;
+
+namespace Api {
+
+class Statistics final : public StatisticsRequestSender {
+public:
+	explicit Statistics(not_null<ChannelData*> channel);
+
+	[[nodiscard]] rpl::producer<rpl::no_value, QString> request();
+	using GraphResult = rpl::producer<Data::StatisticalGraph, QString>;
+	[[nodiscard]] GraphResult requestZoom(
+		const QString &token,
+		float64 x);
+
+	[[nodiscard]] Data::ChannelStatistics channelStats() const;
+	[[nodiscard]] Data::SupergroupStatistics supergroupStats() const;
+
+private:
+	Data::ChannelStatistics _channelStats;
+	Data::SupergroupStatistics _supergroupStats;
+
+	std::deque<Fn<void()>> _zoomDeque;
+
+};
+
+class PublicForwards final : public StatisticsRequestSender {
+public:
+	PublicForwards(
+		not_null<ChannelData*> channel,
+		Data::RecentPostId fullId);
+
+	void request(
+		const Data::PublicForwardsSlice::OffsetToken &token,
+		Fn<void(Data::PublicForwardsSlice)> done);
+
+private:
+	const Data::RecentPostId _fullId;
+	mtpRequestId _requestId = 0;
+	int _lastTotal = 0;
+
+};
+
+class MessageStatistics final : public StatisticsRequestSender {
+public:
+	explicit MessageStatistics(
+		not_null<ChannelData*> channel,
+		FullMsgId fullId);
+	explicit MessageStatistics(
+		not_null<ChannelData*> channel,
+		FullStoryId storyId);
+
+	void request(Fn<void(Data::MessageStatistics)> done);
+
+	[[nodiscard]] Data::PublicForwardsSlice firstSlice() const;
+
+private:
+	PublicForwards _publicForwards;
+	const FullMsgId _fullId;
+	const FullStoryId _storyId;
+
+	Data::PublicForwardsSlice _firstSlice;
+
+	mtpRequestId _requestId = 0;
+
+};
+
+class EarnStatistics final : public StatisticsRequestSender {
+public:
+	explicit EarnStatistics(not_null<PeerData*> peer);
+
+	[[nodiscard]] rpl::producer<rpl::no_value, QString> request();
+	void requestHistory(
+		const Data::EarnHistorySlice::OffsetToken &token,
+		Fn<void(Data::EarnHistorySlice)> done);
+
+	[[nodiscard]] Data::EarnStatistics data() const;
+
+	static constexpr auto kFirstSlice = int(5);
+	static constexpr auto kLimit = int(10);
+
+private:
+	const bool _isUser = false;
+	Data::EarnStatistics _data;
+
+	mtpRequestId _requestId = 0;
+
+};
+
+class Boosts final {
+public:
+	explicit Boosts(not_null<PeerData*> peer);
+
+	[[nodiscard]] rpl::producer<rpl::no_value, QString> request();
+	void requestBoosts(
+		const Data::BoostsListSlice::OffsetToken &token,
+		Fn<void(Data::BoostsListSlice)> done);
+
+	[[nodiscard]] Data::BoostStatus boostStatus() const;
+
+	static constexpr auto kFirstSlice = int(10);
+	static constexpr auto kLimit = int(40);
+
+private:
+	const not_null<PeerData*> _peer;
+	Data::BoostStatus _boostStatus;
+
+	MTP::Sender _api;
+	mtpRequestId _requestId = 0;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_statistics_data_deserialize.cpp

@@ -0,0 +1,35 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_statistics_data_deserialize.h"
+
+#include "data/data_statistics_chart.h"
+#include "statistics/statistics_data_deserialize.h"
+
+namespace Api {
+
+Data::StatisticalGraph StatisticalGraphFromTL(const MTPStatsGraph &tl) {
+	return tl.match([&](const MTPDstatsGraph &d) {
+		using namespace Statistic;
+		const auto zoomToken = d.vzoom_token().has_value()
+			? qs(*d.vzoom_token()).toUtf8()
+			: QByteArray();
+		return Data::StatisticalGraph{
+			StatisticalChartFromJSON(qs(d.vjson().data().vdata()).toUtf8()),
+			zoomToken,
+		};
+	}, [&](const MTPDstatsGraphAsync &data) {
+		return Data::StatisticalGraph{
+			.zoomToken = qs(data.vtoken()).toUtf8(),
+		};
+	}, [&](const MTPDstatsGraphError &data) {
+		return Data::StatisticalGraph{ .error = qs(data.verror()) };
+	});
+}
+
+
+} // namespace Api

Telegram/SourceFiles/api/api_statistics_data_deserialize.h

@@ -0,0 +1,19 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+namespace Data {
+struct StatisticalGraph;
+} // namespace Data
+
+namespace Api {
+
+[[nodiscard]] Data::StatisticalGraph StatisticalGraphFromTL(
+	const MTPStatsGraph &tl);
+
+} // namespace Api

Telegram/SourceFiles/api/api_statistics_sender.cpp

@@ -0,0 +1,86 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_statistics_sender.h"
+
+#include "apiwrap.h"
+#include "data/data_peer.h"
+#include "data/data_session.h"
+#include "main/main_session.h"
+
+namespace Api {
+
+StatisticsRequestSender::StatisticsRequestSender(
+	not_null<PeerData*> peer)
+: _peer(peer)
+, _channel(peer->asChannel())
+, _user(peer->asUser())
+, _api(&_peer->session().api().instance())
+, _timer([=] { checkRequests(); }) {
+}
+
+MTP::Sender &StatisticsRequestSender::api() {
+	return _api;
+}
+
+not_null<ChannelData*> StatisticsRequestSender::channel() {
+	Expects(_channel);
+	return _channel;
+}
+
+not_null<UserData*> StatisticsRequestSender::user() {
+	Expects(_user);
+	return _user;
+}
+
+void StatisticsRequestSender::checkRequests() {
+	for (auto i = begin(_requests); i != end(_requests);) {
+		for (auto j = begin(i->second); j != end(i->second);) {
+			if (_api.pending(*j)) {
+				++j;
+			} else {
+				_peer->session().api().unregisterStatsRequest(
+					i->first,
+					*j);
+				j = i->second.erase(j);
+			}
+		}
+		if (i->second.empty()) {
+			i = _requests.erase(i);
+		} else {
+			++i;
+		}
+	}
+	if (_requests.empty()) {
+		_timer.cancel();
+	}
+}
+
+auto StatisticsRequestSender::ensureRequestIsRegistered()
+-> StatisticsRequestSender::Registered {
+	const auto id = _api.allocateRequestId();
+	const auto dcId = _peer->owner().statsDcId(_peer);
+	if (dcId) {
+		_peer->session().api().registerStatsRequest(dcId, id);
+		_requests[dcId].emplace(id);
+		if (!_timer.isActive()) {
+			constexpr auto kCheckRequestsTimer = 10 * crl::time(1000);
+			_timer.callEach(kCheckRequestsTimer);
+		}
+	}
+	return StatisticsRequestSender::Registered{ id, dcId };
+}
+
+StatisticsRequestSender::~StatisticsRequestSender() {
+	for (const auto &[dcId, ids] : _requests) {
+		for (const auto id : ids) {
+			_peer->session().api().unregisterStatsRequest(dcId, id);
+		}
+	}
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_statistics_sender.h

@@ -0,0 +1,58 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "base/timer.h"
+#include "mtproto/sender.h"
+
+class ChannelData;
+class PeerData;
+class UserData;
+
+namespace Api {
+
+class StatisticsRequestSender {
+protected:
+	explicit StatisticsRequestSender(not_null<PeerData*> peer);
+	~StatisticsRequestSender();
+
+	template <
+		typename Request,
+		typename = std::enable_if_t<!std::is_reference_v<Request>>,
+		typename = typename Request::Unboxed>
+	[[nodiscard]] auto makeRequest(Request &&request) {
+		const auto [id, dcId] = ensureRequestIsRegistered();
+		return std::move(_api.request(
+			std::forward<Request>(request)
+		).toDC(
+			dcId ? MTP::ShiftDcId(dcId, MTP::kStatsDcShift) : 0
+		).overrideId(id));
+	}
+
+	[[nodiscard]] MTP::Sender &api();
+	[[nodiscard]] not_null<ChannelData*> channel();
+	[[nodiscard]] not_null<UserData*> user();
+
+private:
+	struct Registered final {
+		mtpRequestId id;
+		MTP::DcId dcId;
+	};
+	[[nodiscard]] Registered ensureRequestIsRegistered();
+	void checkRequests();
+
+	const not_null<PeerData*> _peer;
+	ChannelData * const _channel;
+	UserData * const _user;
+	MTP::Sender _api;
+	base::Timer _timer;
+	base::flat_map<MTP::DcId, base::flat_set<mtpRequestId>> _requests;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_suggest_post.cpp

@@ -0,0 +1,660 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_suggest_post.h"
+
+#include "apiwrap.h"
+#include "base/unixtime.h"
+#include "boxes/transfer_gift_box.h"
+#include "chat_helpers/message_field.h"
+#include "core/click_handler_types.h"
+#include "data/components/credits.h"
+#include "data/data_changes.h"
+#include "data/data_channel.h"
+#include "data/data_session.h"
+#include "data/data_saved_sublist.h"
+#include "history/view/controls/history_view_suggest_options.h"
+#include "history/history.h"
+#include "history/history_item.h"
+#include "history/history_item_components.h"
+#include "history/history_item_helpers.h"
+#include "lang/lang_keys.h"
+#include "main/main_session.h"
+#include "mainwindow.h"
+#include "settings/settings_credits_graphics.h"
+#include "ui/boxes/choose_date_time.h"
+#include "ui/layers/generic_box.h"
+#include "ui/boxes/confirm_box.h"
+#include "ui/text/text_utilities.h"
+#include "ui/widgets/fields/input_field.h"
+#include "ui/widgets/popup_menu.h"
+#include "window/window_session_controller.h"
+#include "styles/style_chat.h"
+#include "styles/style_layers.h"
+#include "styles/style_menu_icons.h"
+
+namespace Api {
+namespace {
+
+void SendApproval(
+		std::shared_ptr<Main::SessionShow> show,
+		not_null<HistoryItem*> item,
+		TimeId scheduleDate = 0) {
+	using Flag = MTPmessages_ToggleSuggestedPostApproval::Flag;
+	const auto suggestion = item->Get<HistoryMessageSuggestion>();
+	if (!suggestion
+		|| suggestion->accepted
+		|| suggestion->rejected
+		|| suggestion->requestId) {
+		return;
+	}
+
+	const auto id = item->fullId();
+	const auto session = &show->session();
+	const auto finish = [=] {
+		if (const auto item = session->data().message(id)) {
+			const auto suggestion = item->Get<HistoryMessageSuggestion>();
+			if (suggestion) {
+				suggestion->requestId = 0;
+			}
+		}
+	};
+	suggestion->requestId = session->api().request(
+		MTPmessages_ToggleSuggestedPostApproval(
+			MTP_flags(scheduleDate ? Flag::f_schedule_date : Flag()),
+			item->history()->peer->input(),
+			MTP_int(item->id.bare),
+			MTP_int(scheduleDate),
+			MTPstring()) // reject_comment
+	).done([=](const MTPUpdates &result) {
+		session->api().applyUpdates(result);
+		finish();
+	}).fail([=](const MTP::Error &error) {
+		show->showToast(error.type());
+		finish();
+	}).send();
+}
+
+void ConfirmApproval(
+		std::shared_ptr<Main::SessionShow> show,
+		not_null<HistoryItem*> item,
+		TimeId scheduleDate = 0,
+		Fn<void()> accepted = nullptr) {
+	const auto suggestion = item->Get<HistoryMessageSuggestion>();
+	if (!suggestion
+		|| suggestion->accepted
+		|| suggestion->rejected
+		|| suggestion->requestId) {
+		return;
+	}
+	const auto id = item->fullId();
+	const auto price = suggestion->price;
+	const auto admin = item->history()->amMonoforumAdmin();
+	if (!admin && !price.empty()) {
+		const auto credits = &item->history()->session().credits();
+		if (price.ton()) {
+			if (!credits->tonLoaded()) {
+				credits->tonLoad();
+				return;
+			} else if (price > credits->tonBalance()) {
+				const auto peer = item->history()->peer;
+				show->show(
+					Box(HistoryView::InsufficientTonBox, peer, price));
+				return;
+			}
+		} else {
+			if (!credits->loaded()) {
+				credits->load();
+				return;
+			} else if (price > credits->balance()) {
+				using namespace Settings;
+				const auto peer = item->history()->peer;
+				const auto broadcast = peer->monoforumBroadcast();
+				const auto broadcastId = (broadcast ? broadcast : peer)->id;
+				const auto done = [=](SmallBalanceResult result) {
+					if (result == SmallBalanceResult::Success
+						|| result == SmallBalanceResult::Already) {
+						const auto item = peer->owner().message(id);
+						if (item) {
+							ConfirmApproval(
+								show,
+								item,
+								scheduleDate,
+								accepted);
+						}
+					}
+				};
+				MaybeRequestBalanceIncrease(
+					show,
+					int(base::SafeRound(price.value())),
+					SmallBalanceForSuggest{ broadcastId },
+					done);
+				return;
+			}
+		}
+	}
+	const auto peer = item->history()->peer;
+	const auto session = &peer->session();
+	const auto broadcast = peer->monoforumBroadcast();
+	const auto channelName = (broadcast ? broadcast : peer)->name();
+	const auto amount = admin
+		? HistoryView::PriceAfterCommission(session, price)
+		: price;
+	const auto commission = HistoryView::FormatAfterCommissionPercent(
+		session,
+		price);
+	const auto date = langDateTime(base::unixtime::parse(scheduleDate));
+	show->show(Box([=](not_null<Ui::GenericBox*> box) {
+		const auto callback = std::make_shared<Fn<void()>>();
+		auto text = admin
+			? tr::lng_suggest_accept_text(
+				tr::now,
+				lt_from,
+				tr::bold(item->from()->shortName()),
+				tr::marked)
+			: tr::lng_suggest_accept_text_to(
+				tr::now,
+				lt_channel,
+				tr::bold(channelName),
+				tr::marked);
+		if (price) {
+			text.append("\n\n").append(admin
+				? (scheduleDate
+					? (amount.stars()
+						? tr::lng_suggest_accept_receive_stars
+						: tr::lng_suggest_accept_receive_ton)(
+							tr::now,
+							lt_count_decimal,
+							amount.value(),
+							lt_channel,
+							tr::bold(channelName),
+							lt_percent,
+							TextWithEntities{ commission },
+							lt_date,
+							tr::bold(date),
+							tr::rich)
+					: (amount.stars()
+						? tr::lng_suggest_accept_receive_now_stars
+						: tr::lng_suggest_accept_receive_now_ton)(
+							tr::now,
+							lt_count_decimal,
+							amount.value(),
+							lt_channel,
+							tr::bold(channelName),
+							lt_percent,
+							TextWithEntities{ commission },
+							tr::rich))
+				: (scheduleDate
+					? (amount.stars()
+						? tr::lng_suggest_accept_pay_stars
+						: tr::lng_suggest_accept_pay_ton)(
+							tr::now,
+							lt_count_decimal,
+							amount.value(),
+							lt_date,
+							tr::bold(date),
+							tr::rich)
+					: (amount.stars()
+						? tr::lng_suggest_accept_pay_now_stars
+						: tr::lng_suggest_accept_pay_now_ton)(
+							tr::now,
+							lt_count_decimal,
+							amount.value(),
+							tr::rich)));
+			if (admin) {
+				text.append(' ').append(
+					tr::lng_suggest_accept_receive_if(
+						tr::now,
+						tr::rich));
+				if (price.stars()) {
+					text.append("\n\n").append(
+						tr::lng_suggest_options_stars_warning(
+							tr::now,
+							tr::rich));
+				}
+			}
+		}
+		Ui::ConfirmBox(box, {
+			.text = text,
+			.confirmed = [=](Fn<void()> close) { (*callback)(); close(); },
+			.confirmText = tr::lng_suggest_accept_send(),
+			.title = tr::lng_suggest_accept_title(),
+		});
+		*callback = [=, weak = base::make_weak(box)] {
+			if (const auto onstack = accepted) {
+				onstack();
+			}
+			const auto item = show->session().data().message(id);
+			if (!item) {
+				return;
+			}
+			SendApproval(show, item, scheduleDate);
+			if (const auto strong = weak.get()) {
+				strong->closeBox();
+			}
+		};
+	}));
+}
+
+void SendDecline(
+		std::shared_ptr<Main::SessionShow> show,
+		not_null<HistoryItem*> item,
+		const QString &comment) {
+	using Flag = MTPmessages_ToggleSuggestedPostApproval::Flag;
+	const auto suggestion = item->Get<HistoryMessageSuggestion>();
+	if (!suggestion
+		|| suggestion->accepted
+		|| suggestion->rejected
+		|| suggestion->requestId) {
+		return;
+	}
+
+	const auto id = item->fullId();
+	const auto session = &show->session();
+	const auto finish = [=] {
+		if (const auto item = session->data().message(id)) {
+			const auto suggestion = item->Get<HistoryMessageSuggestion>();
+			if (suggestion) {
+				suggestion->requestId = 0;
+			}
+		}
+	};
+	suggestion->requestId = session->api().request(
+		MTPmessages_ToggleSuggestedPostApproval(
+			MTP_flags(Flag::f_reject
+				| (comment.isEmpty() ? Flag() : Flag::f_reject_comment)),
+			item->history()->peer->input(),
+			MTP_int(item->id.bare),
+			MTPint(), // schedule_date
+			MTP_string(comment))
+	).done([=](const MTPUpdates &result) {
+		session->api().applyUpdates(result);
+		finish();
+	}).fail([=](const MTP::Error &error) {
+		show->showToast(error.type());
+		finish();
+	}).send();
+}
+
+void RequestApprovalDate(
+		std::shared_ptr<Main::SessionShow> show,
+		not_null<HistoryItem*> item) {
+	const auto id = item->fullId();
+	const auto weak = std::make_shared<base::weak_qptr<Ui::BoxContent>>();
+	const auto close = [=] {
+		if (const auto strong = weak->get()) {
+			strong->closeBox();
+		}
+	};
+	const auto done = [=](TimeId result) {
+		if (const auto item = show->session().data().message(id)) {
+			ConfirmApproval(show, item, result, close);
+		} else {
+			close();
+		}
+	};
+	using namespace HistoryView;
+	auto dateBox = Box(ChooseSuggestTimeBox, SuggestTimeBoxArgs{
+		.session = &show->session(),
+		.done = done,
+		.mode = SuggestMode::Publish,
+	});
+	*weak = dateBox.data();
+	show->show(std::move(dateBox));
+}
+
+void RequestDeclineComment(
+		std::shared_ptr<Main::SessionShow> show,
+		not_null<HistoryItem*> item) {
+	const auto id = item->fullId();
+	const auto admin = item->history()->amMonoforumAdmin();
+	const auto peer = item->history()->peer;
+	const auto broadcast = peer->monoforumBroadcast();
+	const auto channelName = (broadcast ? broadcast : peer)->name();
+	show->show(Box([=](not_null<Ui::GenericBox*> box) {
+		const auto callback = std::make_shared<Fn<void()>>();
+		Ui::ConfirmBox(box, {
+			.text = (admin
+				? tr::lng_suggest_decline_text(
+					lt_from,
+					rpl::single(tr::bold(item->from()->shortName())),
+					tr::marked)
+				: tr::lng_suggest_decline_text_to(
+					lt_channel,
+					rpl::single(tr::bold(channelName)),
+					tr::marked)),
+			.confirmed = [=](Fn<void()> close) { (*callback)(); close(); },
+			.confirmText = tr::lng_suggest_action_decline(),
+			.confirmStyle = &st::attentionBoxButton,
+			.title = tr::lng_suggest_decline_title(),
+		});
+		const auto reason = box->addRow(object_ptr<Ui::InputField>(
+			box,
+			st::factcheckField,
+			Ui::InputField::Mode::NoNewlines,
+			tr::lng_suggest_decline_reason()));
+		box->setFocusCallback([=] {
+			reason->setFocusFast();
+		});
+		*callback = [=, weak = base::make_weak(box)] {
+			const auto item = show->session().data().message(id);
+			if (!item) {
+				return;
+			}
+			SendDecline(show, item, reason->getLastText().trimmed());
+			if (const auto strong = weak.get()) {
+				strong->closeBox();
+			}
+		};
+		reason->submits(
+		) | rpl::on_next([=](Qt::KeyboardModifiers modifiers) {
+			if (!(modifiers & Qt::ShiftModifier)) {
+				(*callback)();
+			}
+		}, box->lifetime());
+	}));
+}
+
+struct SendSuggestState {
+	SendPaymentHelper sendPayment;
+};
+void SendSuggest(
+		std::shared_ptr<Main::SessionShow> show,
+		not_null<HistoryItem*> item,
+		std::shared_ptr<SendSuggestState> state,
+		Fn<void(SuggestOptions&)> modify,
+		Fn<void()> done = nullptr,
+		int starsApproved = 0) {
+	const auto suggestion = item->Get<HistoryMessageSuggestion>();
+	const auto id = item->fullId();
+	const auto withPaymentApproved = [=](int stars) {
+		if (const auto item = show->session().data().message(id)) {
+			SendSuggest(show, item, state, modify, done, stars);
+		}
+	};
+	const auto isForward = item->Get<HistoryMessageForwarded>();
+	auto action = SendAction(item->history());
+	action.options.suggest.exists = 1;
+	if (suggestion) {
+		action.options.suggest.date = suggestion->date;
+		action.options.suggest.priceWhole = suggestion->price.whole();
+		action.options.suggest.priceNano = suggestion->price.nano();
+		action.options.suggest.ton = suggestion->price.ton() ? 1 : 0;
+	}
+	modify(action.options.suggest);
+	action.options.starsApproved = starsApproved;
+	action.replyTo.monoforumPeerId = item->history()->amMonoforumAdmin()
+		? item->sublistPeerId()
+		: PeerId();
+	action.replyTo.messageId = item->fullId();
+
+	const auto checked = state->sendPayment.check(
+		show,
+		item->history()->peer,
+		action.options,
+		1,
+		withPaymentApproved);
+	if (!checked) {
+		return;
+	}
+
+	show->session().api().sendAction(action);
+	show->session().api().forwardMessages({
+		.items = { item },
+		.options = (isForward
+			? Data::ForwardOptions::PreserveInfo
+			: Data::ForwardOptions::NoSenderNames),
+		}, action);
+	if (const auto onstack = done) {
+		onstack();
+	}
+}
+
+void SuggestApprovalDate(
+		std::shared_ptr<Main::SessionShow> show,
+		not_null<HistoryItem*> item) {
+	const auto suggestion = item->Get<HistoryMessageSuggestion>();
+	if (!suggestion) {
+		return;
+	}
+	const auto id = item->fullId();
+	const auto state = std::make_shared<SendSuggestState>();
+	const auto weak = std::make_shared<base::weak_qptr<Ui::BoxContent>>();
+	const auto done = [=](TimeId result) {
+		const auto item = show->session().data().message(id);
+		if (!item) {
+			return;
+		}
+		const auto close = [=] {
+			if (const auto strong = weak->get()) {
+				strong->closeBox();
+			}
+		};
+		SendSuggest(
+			show,
+			item,
+			state,
+			[=](SuggestOptions &options) { options.date = result; },
+			close);
+	};
+	using namespace HistoryView;
+	auto dateBox = Box(ChooseSuggestTimeBox, SuggestTimeBoxArgs{
+		.session = &show->session(),
+		.done = done,
+		.value = suggestion->date,
+		.mode = SuggestMode::Change,
+	});
+	*weak = dateBox.data();
+	show->show(std::move(dateBox));
+}
+
+void SuggestOfferForMessage(
+		std::shared_ptr<Main::SessionShow> show,
+		not_null<HistoryItem*> item,
+		SuggestOptions values,
+		HistoryView::SuggestMode mode) {
+	const auto id = item->fullId();
+	const auto state = std::make_shared<SendSuggestState>();
+	const auto weak = std::make_shared<base::weak_qptr<Ui::BoxContent>>();
+	const auto done = [=](SuggestOptions result) {
+		const auto item = show->session().data().message(id);
+		if (!item) {
+			return;
+		}
+		const auto close = [=] {
+			if (const auto strong = weak->get()) {
+				strong->closeBox();
+			}
+		};
+		SendSuggest(
+			show,
+			item,
+			state,
+			[=](SuggestOptions &options) { options = result; },
+			close);
+	};
+	using namespace HistoryView;
+	auto priceBox = Box(ChooseSuggestPriceBox, SuggestPriceBoxArgs{
+		.peer = item->history()->peer,
+		.done = done,
+		.value = values,
+		.mode = mode,
+	});
+	*weak = priceBox.data();
+	show->show(std::move(priceBox));
+}
+
+void SuggestApprovalPrice(
+		std::shared_ptr<Main::SessionShow> show,
+		not_null<HistoryItem*> item) {
+	const auto suggestion = item->Get<HistoryMessageSuggestion>();
+	if (!suggestion) {
+		return;
+	}
+	using namespace HistoryView;
+	SuggestOfferForMessage(show, item, {
+		.exists = uint32(1),
+		.priceWhole = uint32(suggestion->price.whole()),
+		.priceNano = uint32(suggestion->price.nano()),
+		.ton = uint32(suggestion->price.ton() ? 1 : 0),
+		.date = suggestion->date,
+	}, SuggestMode::Change);
+}
+
+void ConfirmGiftSaleAccept(
+		not_null<Window::SessionController*> window,
+		not_null<HistoryItem*> item,
+		not_null<HistoryMessageSuggestion*> suggestion) {
+	ShowGiftSaleAcceptBox(window, item, suggestion);
+}
+
+void ConfirmGiftSaleDecline(
+		not_null<Window::SessionController*> window,
+		not_null<HistoryItem*> item,
+		not_null<HistoryMessageSuggestion*> suggestion) {
+	ShowGiftSaleRejectBox(window, item, suggestion);
+}
+
+} // namespace
+
+std::shared_ptr<ClickHandler> AcceptClickHandler(
+		not_null<HistoryItem*> item) {
+	const auto session = &item->history()->session();
+	const auto id = item->fullId();
+	return std::make_shared<LambdaClickHandler>([=](ClickContext context) {
+		const auto my = context.other.value<ClickHandlerContext>();
+		const auto controller = my.sessionWindow.get();
+		if (!controller || &controller->session() != session) {
+			return;
+		}
+		const auto item = session->data().message(id);
+		if (!item) {
+			return;
+		}
+		const auto show = controller->uiShow();
+		const auto suggestion = item->Get<HistoryMessageSuggestion>();
+		if (!suggestion) {
+			return;
+		} else if (suggestion->gift) {
+			ConfirmGiftSaleAccept(controller, item, suggestion);
+		} else if (!suggestion->date) {
+			RequestApprovalDate(show, item);
+		} else {
+			ConfirmApproval(show, item);
+		}
+	});
+}
+
+std::shared_ptr<ClickHandler> DeclineClickHandler(
+		not_null<HistoryItem*> item) {
+	const auto session = &item->history()->session();
+	const auto id = item->fullId();
+	return std::make_shared<LambdaClickHandler>([=](ClickContext context) {
+		const auto my = context.other.value<ClickHandlerContext>();
+		const auto controller = my.sessionWindow.get();
+		if (!controller || &controller->session() != session) {
+			return;
+		}
+		const auto item = session->data().message(id);
+		if (!item) {
+			return;
+		}
+		const auto suggestion = item->Get<HistoryMessageSuggestion>();
+		if (suggestion && suggestion->gift) {
+			ConfirmGiftSaleDecline(controller, item, suggestion);
+		} else {
+			RequestDeclineComment(controller->uiShow(), item);
+		}
+	});
+}
+
+std::shared_ptr<ClickHandler> SuggestChangesClickHandler(
+		not_null<HistoryItem*> item) {
+	const auto session = &item->history()->session();
+	const auto id = item->fullId();
+	return std::make_shared<LambdaClickHandler>([=](ClickContext context) {
+		const auto my = context.other.value<ClickHandlerContext>();
+		const auto window = my.sessionWindow.get();
+		if (!window || &window->session() != session) {
+			return;
+		}
+		const auto item = session->data().message(id);
+		if (!item) {
+			return;
+		}
+		const auto menu = Ui::CreateChild<Ui::PopupMenu>(
+			window->widget(),
+			st::popupMenuWithIcons);
+		if (HistoryView::CanEditSuggestedMessage(item)) {
+			menu->addAction(tr::lng_suggest_menu_edit_message(tr::now), [=] {
+				const auto item = session->data().message(id);
+				if (!item) {
+					return;
+				}
+				const auto suggestion = item->Get<HistoryMessageSuggestion>();
+				if (!suggestion) {
+					return;
+				}
+				const auto history = item->history();
+				const auto editData = PrepareEditText(item);
+				const auto cursor = MessageCursor{
+					int(editData.text.size()),
+					int(editData.text.size()),
+					Ui::kQFixedMax
+				};
+				const auto monoforumPeerId = history->amMonoforumAdmin()
+					? item->sublistPeerId()
+					: PeerId();
+				const auto previewDraft = Data::WebPageDraft::FromItem(item);
+				history->setLocalEditDraft(std::make_unique<Data::Draft>(
+					editData,
+					FullReplyTo{
+						.messageId = FullMsgId(history->peer->id, item->id),
+						.monoforumPeerId = monoforumPeerId,
+					},
+					SuggestOptions{
+						.exists = uint32(1),
+						.priceWhole = uint32(suggestion->price.whole()),
+						.priceNano = uint32(suggestion->price.nano()),
+						.ton = uint32(suggestion->price.ton() ? 1 : 0),
+						.date = suggestion->date,
+					},
+					cursor,
+					previewDraft));
+				history->session().changes().entryUpdated(
+					(monoforumPeerId
+						? item->savedSublist()
+						: (Data::Thread*)history.get()),
+					Data::EntryUpdate::Flag::LocalDraftSet);
+			}, &st::menuIconEdit);
+		}
+		menu->addAction(tr::lng_suggest_menu_edit_price(tr::now), [=] {
+			if (const auto item = session->data().message(id)) {
+				SuggestApprovalPrice(window->uiShow(), item);
+			}
+		}, &st::menuIconTagSell);
+		menu->addAction(tr::lng_suggest_menu_edit_time(tr::now), [=] {
+			if (const auto item = session->data().message(id)) {
+				SuggestApprovalDate(window->uiShow(), item);
+			}
+		}, &st::menuIconSchedule);
+		menu->popup(QCursor::pos());
+	});
+}
+
+void AddOfferToMessage(
+		std::shared_ptr<Main::SessionShow> show,
+		FullMsgId itemId) {
+	const auto session = &show->session();
+	const auto item = session->data().message(itemId);
+	if (!item || !HistoryView::CanAddOfferToMessage(item)) {
+		return;
+	}
+	SuggestOfferForMessage(show, item, {}, HistoryView::SuggestMode::New);
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_suggest_post.h

@@ -0,0 +1,29 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+class ClickHandler;
+
+namespace Main {
+class SessionShow;
+} // namespace Main
+
+namespace Api {
+
+[[nodiscard]] std::shared_ptr<ClickHandler> AcceptClickHandler(
+	not_null<HistoryItem*> item);
+[[nodiscard]] std::shared_ptr<ClickHandler> DeclineClickHandler(
+	not_null<HistoryItem*> item);
+[[nodiscard]] std::shared_ptr<ClickHandler> SuggestChangesClickHandler(
+	not_null<HistoryItem*> item);
+
+void AddOfferToMessage(
+	std::shared_ptr<Main::SessionShow> show,
+	FullMsgId itemId);
+
+} // namespace Api

Telegram/SourceFiles/api/api_text_entities.cpp

@@ -0,0 +1,376 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_text_entities.h"
+
+#include "data/data_document.h"
+#include "data/data_session.h"
+#include "data/data_user.h"
+#include "data/stickers/data_custom_emoji.h"
+#include "data/stickers/data_stickers_set.h"
+#include "history/history.h"
+#include "history/history_item.h"
+#include "main/main_session.h"
+
+namespace Api {
+namespace {
+
+using namespace TextUtilities;
+
+[[nodiscard]] QString CustomEmojiEntityData(
+		const MTPDmessageEntityCustomEmoji &data) {
+	return Data::SerializeCustomEmojiId(data.vdocument_id().v);
+}
+
+[[nodiscard]] std::optional<MTPMessageEntity> CustomEmojiEntity(
+		MTPint offset,
+		MTPint length,
+		const QString &data) {
+	const auto parsed = Data::ParseCustomEmojiData(data);
+	if (!parsed) {
+		return {};
+	}
+	return MTP_messageEntityCustomEmoji(
+		offset,
+		length,
+		MTP_long(parsed));
+}
+
+[[nodiscard]] std::optional<MTPMessageEntity> MentionNameEntity(
+		not_null<Main::Session*> session,
+		MTPint offset,
+		MTPint length,
+		const QString &data) {
+	const auto parsed = MentionNameDataToFields(data);
+	if (!parsed.userId || parsed.selfId != session->userId().bare) {
+		return {};
+	}
+	const auto user = session->data().user(UserId(parsed.userId));
+	const auto item = user->isLoaded()
+		? nullptr
+		: user->owner().messageWithPeer(user->id);
+	const auto input = item
+		? MTP_inputUserFromMessage(
+			item->history()->peer->input(),
+			MTP_int(item->id.bare),
+			MTP_long(parsed.userId))
+		: (parsed.userId == parsed.selfId)
+		? MTP_inputUserSelf()
+		: user->isLoaded()
+		? user->inputUser()
+		: MTP_inputUser(
+			MTP_long(parsed.userId),
+			MTP_long(parsed.accessHash));
+	return MTP_inputMessageEntityMentionName(offset, length, input);
+}
+
+} // namespace
+
+EntitiesInText EntitiesFromMTP(
+		Main::Session *session,
+		const QVector<MTPMessageEntity> &entities) {
+	if (entities.isEmpty()) {
+		return {};
+	}
+	auto result = EntitiesInText();
+	result.reserve(entities.size());
+
+	for (const auto &entity : entities) {
+		entity.match([&](const MTPDmessageEntityUnknown &d) {
+		}, [&](const MTPDmessageEntityMention &d) {
+			result.push_back({
+				EntityType::Mention,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntityHashtag &d) {
+			result.push_back({
+				EntityType::Hashtag,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntityBotCommand &d) {
+			result.push_back({
+				EntityType::BotCommand,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntityUrl &d) {
+			result.push_back({
+				EntityType::Url,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntityEmail &d) {
+			result.push_back({
+				EntityType::Email,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntityBold &d) {
+			result.push_back({
+				EntityType::Bold,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntityItalic &d) {
+			result.push_back({
+				EntityType::Italic,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntityCode &d) {
+			result.push_back({
+				EntityType::Code,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntityPre &d) {
+			result.push_back({
+				EntityType::Pre,
+				d.voffset().v,
+				d.vlength().v,
+				qs(d.vlanguage()),
+			});
+		}, [&](const MTPDmessageEntityTextUrl &d) {
+			result.push_back({
+				EntityType::CustomUrl,
+				d.voffset().v,
+				d.vlength().v,
+				qs(d.vurl()),
+			});
+		}, [&](const MTPDmessageEntityMentionName &d) {
+			if (!session) {
+				return;
+			}
+			const auto userId = UserId(d.vuser_id());
+			const auto user = session->data().userLoaded(userId);
+			const auto data = MentionNameDataFromFields({
+				.selfId = session->userId().bare,
+				.userId = userId.bare,
+				.accessHash = user ? user->accessHash() : 0,
+			});
+			result.push_back({
+				EntityType::MentionName,
+				d.voffset().v,
+				d.vlength().v,
+				data,
+			});
+		}, [&](const MTPDinputMessageEntityMentionName &d) {
+			if (!session) {
+				return;
+			}
+			const auto data = d.vuser_id().match([&](
+					const MTPDinputUserSelf &) {
+				return MentionNameDataFromFields({
+					.selfId = session->userId().bare,
+					.userId = session->userId().bare,
+					.accessHash = session->user()->accessHash(),
+				});
+			}, [&](const MTPDinputUser &data) {
+				return MentionNameDataFromFields({
+					.selfId = session->userId().bare,
+					.userId = UserId(data.vuser_id()).bare,
+					.accessHash = data.vaccess_hash().v,
+				});
+			}, [](const auto &) {
+				return QString();
+			});
+			if (!data.isEmpty()) {
+				result.push_back({
+					EntityType::MentionName,
+					d.voffset().v,
+					d.vlength().v,
+					data,
+				});
+			}
+		}, [&](const MTPDmessageEntityPhone &d) {
+			result.push_back({
+				EntityType::Phone,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntityCashtag &d) {
+			result.push_back({
+				EntityType::Cashtag,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntityUnderline &d) {
+			result.push_back({
+				EntityType::Underline,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntityStrike &d) {
+			result.push_back({
+				EntityType::StrikeOut,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntityBankCard &d) {
+			result.push_back({
+				EntityType::BankCard,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntitySpoiler &d) {
+			result.push_back({
+				EntityType::Spoiler,
+				d.voffset().v,
+				d.vlength().v,
+			});
+		}, [&](const MTPDmessageEntityCustomEmoji &d) {
+			result.push_back({
+				EntityType::CustomEmoji,
+				d.voffset().v,
+				d.vlength().v,
+				CustomEmojiEntityData(d),
+			});
+		}, [&](const MTPDmessageEntityBlockquote &d) {
+			result.push_back({
+				EntityType::Blockquote,
+				d.voffset().v,
+				d.vlength().v,
+				d.is_collapsed() ? u"1"_q : QString(),
+			});
+		});
+	}
+	return result;
+}
+
+MTPVector<MTPMessageEntity> EntitiesToMTP(
+		Main::Session *session,
+		const EntitiesInText &entities,
+		ConvertOption option) {
+	auto v = QVector<MTPMessageEntity>();
+	v.reserve(entities.size());
+	for (const auto &entity : entities) {
+		if (entity.length() <= 0) {
+			continue;
+		}
+		if (option == ConvertOption::SkipLocal
+			&& entity.type() != EntityType::Bold
+			//&& entity.type() != EntityType::Semibold // Not in API.
+			&& entity.type() != EntityType::Italic
+			&& entity.type() != EntityType::Underline
+			&& entity.type() != EntityType::StrikeOut
+			&& entity.type() != EntityType::Code // #TODO entities
+			&& entity.type() != EntityType::Pre
+			&& entity.type() != EntityType::Blockquote
+			&& entity.type() != EntityType::Spoiler
+			&& entity.type() != EntityType::MentionName
+			&& entity.type() != EntityType::CustomUrl
+			&& entity.type() != EntityType::CustomEmoji) {
+			continue;
+		}
+
+		auto offset = MTP_int(entity.offset());
+		auto length = MTP_int(entity.length());
+		switch (entity.type()) {
+		case EntityType::Url: {
+			v.push_back(MTP_messageEntityUrl(offset, length));
+		} break;
+		case EntityType::CustomUrl: {
+			v.push_back(
+				MTP_messageEntityTextUrl(
+					offset,
+					length,
+					MTP_string(entity.data())));
+		} break;
+		case EntityType::Email: {
+			v.push_back(MTP_messageEntityEmail(offset, length));
+		} break;
+		case EntityType::Phone: {
+			v.push_back(MTP_messageEntityPhone(offset, length));
+		} break;
+		case EntityType::BankCard: {
+			v.push_back(MTP_messageEntityBankCard(offset, length));
+		} break;
+		case EntityType::Hashtag: {
+			v.push_back(MTP_messageEntityHashtag(offset, length));
+		} break;
+		case EntityType::Cashtag: {
+			v.push_back(MTP_messageEntityCashtag(offset, length));
+		} break;
+		case EntityType::Mention: {
+			v.push_back(MTP_messageEntityMention(offset, length));
+		} break;
+		case EntityType::MentionName: {
+			Assert(session != nullptr);
+			const auto valid = MentionNameEntity(
+				session,
+				offset,
+				length,
+				entity.data());
+			if (valid) {
+				v.push_back(*valid);
+			}
+		} break;
+		case EntityType::BotCommand: {
+			v.push_back(MTP_messageEntityBotCommand(offset, length));
+		} break;
+		case EntityType::Bold: {
+			v.push_back(MTP_messageEntityBold(offset, length));
+		} break;
+		case EntityType::Italic: {
+			v.push_back(MTP_messageEntityItalic(offset, length));
+		} break;
+		case EntityType::Underline: {
+			v.push_back(MTP_messageEntityUnderline(offset, length));
+		} break;
+		case EntityType::StrikeOut: {
+			v.push_back(MTP_messageEntityStrike(offset, length));
+		} break;
+		case EntityType::Code: {
+			// #TODO entities.
+			v.push_back(MTP_messageEntityCode(offset, length));
+		} break;
+		case EntityType::Pre: {
+			v.push_back(
+				MTP_messageEntityPre(
+					offset,
+					length,
+					MTP_string(entity.data())));
+		} break;
+		case EntityType::Blockquote: {
+			using Flag = MTPDmessageEntityBlockquote::Flag;
+			const auto collapsed = !entity.data().isEmpty();
+			v.push_back(
+				MTP_messageEntityBlockquote(
+					MTP_flags(collapsed ? Flag::f_collapsed : Flag()),
+					offset,
+					length));
+		} break;
+		case EntityType::Spoiler: {
+			v.push_back(MTP_messageEntitySpoiler(offset, length));
+		} break;
+		case EntityType::CustomEmoji: {
+			const auto valid = CustomEmojiEntity(
+				offset,
+				length,
+				entity.data());
+			if (valid) {
+				v.push_back(*valid);
+			}
+		} break;
+		}
+	}
+	return MTP_vector<MTPMessageEntity>(std::move(v));
+}
+
+TextWithEntities ParseTextWithEntities(
+		Main::Session *session,
+		const MTPTextWithEntities &text) {
+	const auto &data = text.data();
+	return {
+		.text = qs(data.vtext()),
+		.entities = EntitiesFromMTP(session, data.ventities().v),
+	};
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_text_entities.h

@@ -0,0 +1,36 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "ui/text/text_entity.h"
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+enum class ConvertOption {
+	WithLocal,
+	SkipLocal,
+};
+
+[[nodiscard]] EntitiesInText EntitiesFromMTP(
+	Main::Session *session,
+	const QVector<MTPMessageEntity> &entities);
+
+[[nodiscard]] MTPVector<MTPMessageEntity> EntitiesToMTP(
+	Main::Session *session,
+	const EntitiesInText &entities,
+	ConvertOption option = ConvertOption::WithLocal);
+
+[[nodiscard]] TextWithEntities ParseTextWithEntities(
+	Main::Session *session,
+	const MTPTextWithEntities &text);
+
+} // namespace Api

Telegram/SourceFiles/api/api_todo_lists.cpp

@@ -0,0 +1,257 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_todo_lists.h"
+
+#include "api/api_editing.h"
+#include "apiwrap.h"
+#include "base/random.h"
+#include "data/business/data_shortcut_messages.h" // ShortcutIdToMTP
+#include "data/data_changes.h"
+#include "data/data_histories.h"
+#include "data/data_todo_list.h"
+#include "data/data_session.h"
+#include "history/history.h"
+#include "history/history_item.h"
+#include "history/history_item_helpers.h" // ShouldSendSilent
+#include "main/main_session.h"
+
+namespace Api {
+namespace {
+
+constexpr auto kSendTogglesDelay = 3 * crl::time(1000);
+
+} // namespace
+
+TodoLists::TodoLists(not_null<ApiWrap*> api)
+: _session(&api->session())
+, _api(&api->instance())
+, _sendTimer([=] { sendAccumulatedToggles(false); }) {
+}
+
+void TodoLists::create(
+		const TodoListData &data,
+		SendAction action,
+		Fn<void()> done,
+		Fn<void(QString)> fail) {
+	_session->api().sendAction(action);
+
+	const auto history = action.history;
+	const auto peer = history->peer;
+	const auto topicRootId = action.replyTo.messageId
+		? action.replyTo.topicRootId
+		: 0;
+	const auto monoforumPeerId = action.replyTo.monoforumPeerId;
+	auto sendFlags = MTPmessages_SendMedia::Flags(0);
+	if (action.replyTo) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_reply_to;
+	}
+	const auto clearCloudDraft = action.clearDraft;
+	if (clearCloudDraft) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_clear_draft;
+		history->clearLocalDraft(topicRootId, monoforumPeerId);
+		history->clearCloudDraft(topicRootId, monoforumPeerId);
+		history->startSavingCloudDraft(topicRootId, monoforumPeerId);
+	}
+	const auto silentPost = ShouldSendSilent(peer, action.options);
+	const auto starsPaid = std::min(
+		peer->starsPerMessageChecked(),
+		action.options.starsApproved);
+	if (silentPost) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_silent;
+	}
+	if (action.options.scheduled) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_schedule_date;
+		if (action.options.scheduleRepeatPeriod) {
+			sendFlags |= MTPmessages_SendMedia::Flag::f_schedule_repeat_period;
+		}
+	}
+	if (action.options.shortcutId) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_quick_reply_shortcut;
+	}
+	if (action.options.effectId) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_effect;
+	}
+	if (action.options.suggest) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_suggested_post;
+	}
+	if (starsPaid) {
+		action.options.starsApproved -= starsPaid;
+		sendFlags |= MTPmessages_SendMedia::Flag::f_allow_paid_stars;
+	}
+	const auto sendAs = action.options.sendAs;
+	if (sendAs) {
+		sendFlags |= MTPmessages_SendMedia::Flag::f_send_as;
+	}
+	auto &histories = history->owner().histories();
+	const auto randomId = base::RandomValue<uint64>();
+	histories.sendPreparedMessage(
+		history,
+		action.replyTo,
+		randomId,
+		Data::Histories::PrepareMessage<MTPmessages_SendMedia>(
+			MTP_flags(sendFlags),
+			peer->input(),
+			Data::Histories::ReplyToPlaceholder(),
+			TodoListDataToInputMedia(&data),
+			MTP_string(),
+			MTP_long(randomId),
+			MTPReplyMarkup(),
+			MTPVector<MTPMessageEntity>(),
+			MTP_int(action.options.scheduled),
+			MTP_int(action.options.scheduleRepeatPeriod),
+			(sendAs ? sendAs->input() : MTP_inputPeerEmpty()),
+			Data::ShortcutIdToMTP(_session, action.options.shortcutId),
+			MTP_long(action.options.effectId),
+			MTP_long(starsPaid),
+			SuggestToMTP(action.options.suggest)
+		), [=](const MTPUpdates &result, const MTP::Response &response) {
+		if (clearCloudDraft) {
+			history->finishSavingCloudDraft(
+				topicRootId,
+				monoforumPeerId,
+				UnixtimeFromMsgId(response.outerMsgId));
+		}
+		_session->changes().historyUpdated(
+			history,
+			(action.options.scheduled
+				? Data::HistoryUpdate::Flag::ScheduledSent
+				: Data::HistoryUpdate::Flag::MessageSent));
+		if (const auto onstack = done) {
+			onstack();
+		}
+	}, [=](const MTP::Error &error, const MTP::Response &response) {
+		if (clearCloudDraft) {
+			history->finishSavingCloudDraft(
+				topicRootId,
+				monoforumPeerId,
+				UnixtimeFromMsgId(response.outerMsgId));
+		}
+		if (const auto onstack = fail) {
+			onstack(error.type());
+		}
+	});
+}
+
+void TodoLists::edit(
+		not_null<HistoryItem*> item,
+		const TodoListData &data,
+		SendOptions options,
+		Fn<void()> done,
+		Fn<void(QString)> fail) {
+	EditTodoList(item, data, options, [=](mtpRequestId) {
+		if (const auto onstack = done) {
+			onstack();
+		}
+	}, [=](const QString &error, mtpRequestId) {
+		if (const auto onstack = fail) {
+			onstack(error);
+		}
+	});
+}
+
+void TodoLists::add(
+		not_null<HistoryItem*> item,
+		const std::vector<TodoListItem> &items,
+		Fn<void()> done,
+		Fn<void(QString)> fail) {
+	if (items.empty()) {
+		return;
+	}
+	const auto session = _session;
+	_session->api().request(MTPmessages_AppendTodoList(
+		item->history()->peer->input(),
+		MTP_int(item->id.bare),
+		TodoListItemsToMTP(&item->history()->session(), items)
+	)).done([=](const MTPUpdates &result) {
+		session->api().applyUpdates(result);
+		if (const auto onstack = done) {
+			onstack();
+		}
+	}).fail([=](const MTP::Error &error) {
+		if (const auto onstack = fail) {
+			onstack(error.type());
+		}
+	}).send();
+}
+
+void TodoLists::toggleCompletion(FullMsgId itemId, int id, bool completed) {
+	auto &entry = _toggles[itemId];
+	if (completed) {
+		const auto changed1 = entry.completed.emplace(id).second;
+		const auto changed2 = entry.incompleted.remove(id);
+		if (!changed1 && !changed2) {
+			return;
+		}
+	} else {
+		const auto changed1 = entry.incompleted.emplace(id).second;
+		const auto changed2 = entry.completed.remove(id);
+		if (!changed1 && !changed2) {
+			return;
+		}
+	}
+	entry.scheduled = crl::now();
+	if (!entry.requestId && !_sendTimer.isActive()) {
+		_sendTimer.callOnce(kSendTogglesDelay);
+	}
+}
+
+void TodoLists::sendAccumulatedToggles(bool force) {
+	const auto now = crl::now();
+	auto nearest = crl::time(0);
+	for (auto &[itemId, entry] : _toggles) {
+		if (entry.requestId) {
+			continue;
+		}
+		const auto wait = entry.scheduled + kSendTogglesDelay - now;
+		if (wait <= 0) {
+			entry.scheduled = 0;
+			send(itemId, entry);
+		} else if (!nearest || nearest > wait) {
+			nearest = wait;
+		}
+	}
+	if (nearest > 0) {
+		_sendTimer.callOnce(nearest);
+	}
+}
+
+void TodoLists::send(FullMsgId itemId, Accumulated &entry) {
+	const auto item = _session->data().message(itemId);
+	if (!item) {
+		return;
+	}
+	auto completed = entry.completed
+		| ranges::views::transform([](int id) { return MTP_int(id); });
+	auto incompleted = entry.incompleted
+		| ranges::views::transform([](int id) { return MTP_int(id); });
+	entry.requestId = _api.request(MTPmessages_ToggleTodoCompleted(
+		item->history()->peer->input(),
+		MTP_int(item->id),
+		MTP_vector_from_range(completed),
+		MTP_vector_from_range(incompleted)
+	)).done([=](const MTPUpdates &result) {
+		_session->api().applyUpdates(result);
+		finishRequest(itemId);
+	}).fail([=](const MTP::Error &error) {
+		finishRequest(itemId);
+	}).send();
+	entry.completed.clear();
+	entry.incompleted.clear();
+}
+
+void TodoLists::finishRequest(FullMsgId itemId) {
+	auto &entry = _toggles[itemId];
+	entry.requestId = 0;
+	if (entry.completed.empty() && entry.incompleted.empty()) {
+		_toggles.remove(itemId);
+	} else {
+		sendAccumulatedToggles(false);
+	}
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_todo_lists.h

@@ -0,0 +1,69 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "base/timer.h"
+#include "mtproto/sender.h"
+
+class ApiWrap;
+class HistoryItem;
+struct TodoListItem;
+struct TodoListData;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+struct SendAction;
+struct SendOptions;
+
+class TodoLists final {
+public:
+	explicit TodoLists(not_null<ApiWrap*> api);
+
+	void create(
+		const TodoListData &data,
+		SendAction action,
+		Fn<void()> done,
+		Fn<void(QString)> fail);
+	void edit(
+		not_null<HistoryItem*> item,
+		const TodoListData &data,
+		SendOptions options,
+		Fn<void()> done,
+		Fn<void(QString)> fail);
+	void add(
+		not_null<HistoryItem*> item,
+		const std::vector<TodoListItem> &items,
+		Fn<void()> done,
+		Fn<void(QString)> fail);
+	void toggleCompletion(FullMsgId itemId, int id, bool completed);
+
+private:
+	struct Accumulated {
+		base::flat_set<int> completed;
+		base::flat_set<int> incompleted;
+		crl::time scheduled = 0;
+		mtpRequestId requestId = 0;
+	};
+
+	void sendAccumulatedToggles(bool force);
+	void send(FullMsgId itemId, Accumulated &entry);
+	void finishRequest(FullMsgId itemId);
+
+	const not_null<Main::Session*> _session;
+	MTP::Sender _api;
+
+	base::flat_map<FullMsgId, Accumulated> _toggles;
+	base::Timer _sendTimer;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_toggling_media.cpp

@@ -0,0 +1,141 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_toggling_media.h"
+
+#include "apiwrap.h"
+#include "data/data_document.h"
+#include "data/data_file_origin.h"
+#include "data/data_session.h"
+#include "data/stickers/data_stickers.h"
+#include "window/window_session_controller.h"
+#include "main/main_session.h"
+
+namespace Api {
+namespace {
+
+template <typename ToggleRequestCallback, typename DoneCallback>
+void ToggleExistingMedia(
+		not_null<DocumentData*> document,
+		Data::FileOrigin origin,
+		ToggleRequestCallback toggleRequest,
+		DoneCallback &&done) {
+	const auto api = &document->session().api();
+
+	auto performRequest = [=](const auto &repeatRequest) -> void {
+		const auto usedFileReference = document->fileReference();
+		api->request(
+			toggleRequest()
+		).done(done).fail([=](const MTP::Error &error) {
+			if (error.code() == 400
+				&& error.type().startsWith(u"FILE_REFERENCE_"_q)) {
+				auto refreshed = [=](const Data::UpdatedFileReferences &d) {
+					if (document->fileReference() != usedFileReference) {
+						repeatRequest(repeatRequest);
+					}
+				};
+				api->refreshFileReference(origin, std::move(refreshed));
+			}
+		}).send();
+	};
+	performRequest(performRequest);
+}
+
+} // namespace
+
+void ToggleFavedSticker(
+		std::shared_ptr<ChatHelpers::Show> show,
+		not_null<DocumentData*> document,
+		Data::FileOrigin origin) {
+	ToggleFavedSticker(
+		std::move(show),
+		document,
+		std::move(origin),
+		!document->owner().stickers().isFaved(document));
+}
+
+void ToggleFavedSticker(
+		std::shared_ptr<ChatHelpers::Show> show,
+		not_null<DocumentData*> document,
+		Data::FileOrigin origin,
+		bool faved) {
+	if (faved && !document->sticker()) {
+		return;
+	}
+	auto done = [=] {
+		document->owner().stickers().setFaved(show, document, faved);
+	};
+	ToggleExistingMedia(
+		document,
+		std::move(origin),
+		[=, d = document] {
+			return MTPmessages_FaveSticker(d->mtpInput(), MTP_bool(!faved));
+		},
+		std::move(done));
+}
+
+void ToggleRecentSticker(
+		not_null<DocumentData*> document,
+		Data::FileOrigin origin,
+		bool saved) {
+	if (!document->sticker()) {
+		return;
+	}
+	auto done = [=] {
+		if (!saved) {
+			document->owner().stickers().removeFromRecentSet(document);
+		}
+	};
+	ToggleExistingMedia(
+		document,
+		std::move(origin),
+		[=] {
+			return MTPmessages_SaveRecentSticker(
+				MTP_flags(MTPmessages_SaveRecentSticker::Flag(0)),
+				document->mtpInput(),
+				MTP_bool(!saved));
+		},
+		std::move(done));
+}
+
+void ToggleSavedGif(
+		std::shared_ptr<ChatHelpers::Show> show,
+		not_null<DocumentData*> document,
+		Data::FileOrigin origin,
+		bool saved) {
+	if (saved && !document->isGifv()) {
+		return;
+	}
+	auto done = [=] {
+		if (saved) {
+			document->owner().stickers().addSavedGif(show, document);
+		}
+	};
+	ToggleExistingMedia(
+		document,
+		std::move(origin),
+		[=, d = document] {
+			return MTPmessages_SaveGif(d->mtpInput(), MTP_bool(!saved));
+		},
+		std::move(done));
+}
+
+void ToggleSavedRingtone(
+		not_null<DocumentData*> document,
+		Data::FileOrigin origin,
+		Fn<void()> &&done,
+		bool saved) {
+	ToggleExistingMedia(
+		document,
+		std::move(origin),
+		[=, d = document] {
+			return MTPaccount_SaveRingtone(d->mtpInput(), MTP_bool(!saved));
+		},
+		std::move(done));
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_toggling_media.h

@@ -0,0 +1,44 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+namespace ChatHelpers {
+class Show;
+} // namespace ChatHelpers
+
+namespace Api {
+
+void ToggleFavedSticker(
+	std::shared_ptr<ChatHelpers::Show> show,
+	not_null<DocumentData*> document,
+	Data::FileOrigin origin);
+
+void ToggleFavedSticker(
+	std::shared_ptr<ChatHelpers::Show> show,
+	not_null<DocumentData*> document,
+	Data::FileOrigin origin,
+	bool faved);
+
+void ToggleRecentSticker(
+	not_null<DocumentData*> document,
+	Data::FileOrigin origin,
+	bool saved);
+
+void ToggleSavedGif(
+	std::shared_ptr<ChatHelpers::Show> show,
+	not_null<DocumentData*> document,
+	Data::FileOrigin origin,
+	bool saved);
+
+void ToggleSavedRingtone(
+	not_null<DocumentData*> document,
+	Data::FileOrigin origin,
+	Fn<void()> &&done,
+	bool saved);
+
+} // namespace Api

Telegram/SourceFiles/api/api_transcribes.cpp

@@ -0,0 +1,211 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_transcribes.h"
+
+#include "apiwrap.h"
+#include "data/data_channel.h"
+#include "data/data_document.h"
+#include "data/data_peer.h"
+#include "data/data_session.h"
+#include "history/history.h"
+#include "history/history_item.h"
+#include "history/history_item_helpers.h"
+#include "main/main_app_config.h"
+#include "main/main_session.h"
+#include "main/main_session_settings.h"
+
+namespace Api {
+
+Transcribes::Transcribes(not_null<ApiWrap*> api)
+: _session(&api->session())
+, _api(&api->instance()) {
+}
+
+bool Transcribes::isRated(not_null<HistoryItem*> item) const {
+	const auto fullId = item->fullId();
+	for (const auto &[transcribeId, id] : _ids) {
+		if (id == fullId) {
+			return _session->settings().isTranscriptionRated(transcribeId);
+		}
+	}
+	return false;
+}
+
+void Transcribes::rate(not_null<HistoryItem*> item, bool isGood) {
+	const auto fullId = item->fullId();
+	for (const auto &[transcribeId, id] : _ids) {
+		if (id == fullId) {
+			_api.request(MTPmessages_RateTranscribedAudio(
+				item->history()->peer->input(),
+				MTP_int(item->id),
+				MTP_long(transcribeId),
+				MTP_bool(isGood))).send();
+			_session->settings().markTranscriptionAsRated(transcribeId);
+			_session->saveSettings();
+			return;
+		}
+	}
+}
+
+bool Transcribes::freeFor(not_null<HistoryItem*> item) const {
+	if (const auto channel = item->history()->peer->asMegagroup()) {
+		const auto owner = &channel->owner();
+		return channel->levelHint() >= owner->groupFreeTranscribeLevel();
+	}
+	return false;
+}
+
+bool Transcribes::trialsSupport() {
+	if (!_trialsSupport) {
+		const auto count = _session->appConfig().get<int>(
+			u"transcribe_audio_trial_weekly_number"_q,
+			0);
+		const auto until = _session->appConfig().get<int>(
+			u"transcribe_audio_trial_cooldown_until"_q,
+			0);
+		_trialsSupport = (count > 0) || (until > 0);
+	}
+	return *_trialsSupport;
+}
+
+TimeId Transcribes::trialsRefreshAt() {
+	if (_trialsRefreshAt < 0) {
+		_trialsRefreshAt = _session->appConfig().get<int>(
+			u"transcribe_audio_trial_cooldown_until"_q,
+			0);
+	}
+	return _trialsRefreshAt;
+}
+
+int Transcribes::trialsCount() {
+	if (_trialsCount < 0) {
+		_trialsCount = _session->appConfig().get<int>(
+			u"transcribe_audio_trial_weekly_number"_q,
+			-1);
+		return std::max(_trialsCount, 0);
+	}
+	return _trialsCount;
+}
+
+crl::time Transcribes::trialsMaxLengthMs() const {
+	return 1000 * _session->appConfig().get<int>(
+		u"transcribe_audio_trial_duration_max"_q,
+		300);
+}
+
+void Transcribes::toggle(not_null<HistoryItem*> item) {
+	const auto id = item->fullId();
+	auto i = _map.find(id);
+	if (i == _map.end()) {
+		load(item);
+		//_session->data().requestItemRepaint(item);
+		_session->data().requestItemResize(item);
+	} else if (!i->second.requestId) {
+		i->second.shown = !i->second.shown;
+		if (i->second.roundview) {
+			_session->data().requestItemViewRefresh(item);
+		}
+		_session->data().requestItemResize(item);
+	}
+}
+
+const Transcribes::Entry &Transcribes::entry(
+		not_null<HistoryItem*> item) const {
+	static auto empty = Entry();
+	const auto i = _map.find(item->fullId());
+	return (i != _map.end()) ? i->second : empty;
+}
+
+void Transcribes::apply(const MTPDupdateTranscribedAudio &update) {
+	const auto id = update.vtranscription_id().v;
+	const auto i = _ids.find(id);
+	if (i == _ids.end()) {
+		return;
+	}
+	const auto j = _map.find(i->second);
+	if (j == _map.end()) {
+		return;
+	}
+	const auto text = qs(update.vtext());
+	j->second.result = text;
+	j->second.pending = update.is_pending();
+	if (const auto item = _session->data().message(i->second)) {
+		if (j->second.roundview) {
+			_session->data().requestItemViewRefresh(item);
+		}
+		_session->data().requestItemResize(item);
+	}
+}
+
+void Transcribes::load(not_null<HistoryItem*> item) {
+	if (!item->isHistoryEntry() || item->isLocal()) {
+		return;
+	}
+	const auto toggleRound = [](not_null<HistoryItem*> item, Entry &entry) {
+		if (const auto media = item->media()) {
+			if (const auto document = media->document()) {
+				if (document->isVideoMessage()) {
+					entry.roundview = true;
+					document->owner().requestItemViewRefresh(item);
+				}
+			}
+		}
+	};
+	const auto id = item->fullId();
+	const auto requestId = _api.request(MTPmessages_TranscribeAudio(
+		item->history()->peer->input(),
+		MTP_int(item->id)
+	)).done([=](const MTPmessages_TranscribedAudio &result) {
+		const auto &data = result.data();
+
+		{
+			const auto trialsCountChanged = data.vtrial_remains_num()
+				&& (_trialsCount != data.vtrial_remains_num()->v);
+			if (trialsCountChanged) {
+				_trialsCount = data.vtrial_remains_num()->v;
+			}
+			const auto refreshAtChanged = data.vtrial_remains_until_date()
+				&& (_trialsRefreshAt != data.vtrial_remains_until_date()->v);
+			if (refreshAtChanged) {
+				_trialsRefreshAt = data.vtrial_remains_until_date()->v;
+			}
+			if (trialsCountChanged) {
+				ShowTrialTranscribesToast(_trialsCount, _trialsRefreshAt);
+			}
+		}
+
+		auto &entry = _map[id];
+		entry.requestId = 0;
+		entry.pending = data.is_pending();
+		entry.result = qs(data.vtext());
+		_ids.emplace(data.vtranscription_id().v, id);
+		if (const auto item = _session->data().message(id)) {
+			toggleRound(item, entry);
+			_session->data().requestItemResize(item);
+		}
+	}).fail([=](const MTP::Error &error) {
+		auto &entry = _map[id];
+		entry.requestId = 0;
+		entry.pending = false;
+		entry.failed = true;
+		if (error.type() == u"MSG_VOICE_TOO_LONG"_q) {
+			entry.toolong = true;
+		}
+		if (const auto item = _session->data().message(id)) {
+			toggleRound(item, entry);
+			_session->data().requestItemResize(item);
+		}
+	}).send();
+	auto &entry = _map.emplace(id).first->second;
+	entry.requestId = requestId;
+	entry.shown = true;
+	entry.failed = false;
+	entry.pending = false;
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_transcribes.h

@@ -0,0 +1,63 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "mtproto/sender.h"
+
+class ApiWrap;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+class Transcribes final {
+public:
+	explicit Transcribes(not_null<ApiWrap*> api);
+
+	struct Entry {
+		QString result;
+		bool shown = false;
+		bool failed = false;
+		bool toolong = false;
+		bool pending = false;
+		bool roundview = false;
+		mtpRequestId requestId = 0;
+	};
+
+	void toggle(not_null<HistoryItem*> item);
+	[[nodiscard]] const Entry &entry(not_null<HistoryItem*> item) const;
+
+	void apply(const MTPDupdateTranscribedAudio &update);
+
+	[[nodiscard]] bool freeFor(not_null<HistoryItem*> item) const;
+	[[nodiscard]] bool isRated(not_null<HistoryItem*> item) const;
+	void rate(not_null<HistoryItem*> item, bool isGood);
+
+	[[nodiscard]] bool trialsSupport();
+	[[nodiscard]] TimeId trialsRefreshAt();
+	[[nodiscard]] int trialsCount();
+	[[nodiscard]] crl::time trialsMaxLengthMs() const;
+
+private:
+	void load(not_null<HistoryItem*> item);
+
+	const not_null<Main::Session*> _session;
+	MTP::Sender _api;
+
+	int _trialsCount = -1;
+	std::optional<bool> _trialsSupport;
+	TimeId _trialsRefreshAt = -1;
+
+	base::flat_map<FullMsgId, Entry> _map;
+	base::flat_map<uint64, FullMsgId> _ids;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_unread_things.cpp

@@ -0,0 +1,167 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_unread_things.h"
+
+#include "data/data_peer.h"
+#include "data/data_channel.h"
+#include "data/data_forum_topic.h"
+#include "data/data_saved_sublist.h"
+#include "data/data_session.h"
+#include "main/main_session.h"
+#include "history/history.h"
+#include "history/history_item.h"
+#include "history/history_unread_things.h"
+#include "apiwrap.h"
+
+namespace Api {
+namespace {
+
+constexpr auto kPreloadIfLess = 5;
+constexpr auto kFirstRequestLimit = 10;
+constexpr auto kNextRequestLimit = 100;
+
+} // namespace
+
+UnreadThings::UnreadThings(not_null<ApiWrap*> api) : _api(api) {
+}
+
+bool UnreadThings::trackMentions(Data::Thread *thread) const {
+	const auto peer = thread ? thread->peer().get() : nullptr;
+	return peer
+		&& (peer->isChat() || peer->isMegagroup())
+		&& !peer->isMonoforum();
+}
+
+bool UnreadThings::trackReactions(Data::Thread *thread) const {
+	const auto peer = thread ? thread->peer().get() : nullptr;
+	return peer && (peer->isUser() || peer->isChat() || peer->isMegagroup());
+}
+
+void UnreadThings::preloadEnough(Data::Thread *thread) {
+	if (trackMentions(thread)) {
+		preloadEnoughMentions(thread);
+	}
+	if (trackReactions(thread)) {
+		preloadEnoughReactions(thread);
+	}
+}
+
+void UnreadThings::mediaAndMentionsRead(
+		const base::flat_set<MsgId> &readIds,
+		ChannelData *channel) {
+	for (const auto &msgId : readIds) {
+		_api->requestMessageData(channel, msgId, [=] {
+			const auto item = channel
+				? _api->session().data().message(channel->id, msgId)
+				: _api->session().data().nonChannelMessage(msgId);
+			if (item && item->mentionsMe()) {
+				item->markMediaAndMentionRead();
+			}
+		});
+	}
+}
+
+void UnreadThings::preloadEnoughMentions(not_null<Data::Thread*> thread) {
+	const auto fullCount = thread->unreadMentions().count();
+	const auto loadedCount = thread->unreadMentions().loadedCount();
+	const auto allLoaded = (fullCount >= 0) && (loadedCount >= fullCount);
+	if (fullCount >= 0 && loadedCount < kPreloadIfLess && !allLoaded) {
+		requestMentions(thread, loadedCount);
+	}
+}
+
+void UnreadThings::preloadEnoughReactions(not_null<Data::Thread*> thread) {
+	const auto fullCount = thread->unreadReactions().count();
+	const auto loadedCount = thread->unreadReactions().loadedCount();
+	const auto allLoaded = (fullCount >= 0) && (loadedCount >= fullCount);
+	if (fullCount >= 0 && loadedCount < kPreloadIfLess && !allLoaded) {
+		requestReactions(thread, loadedCount);
+	}
+}
+
+void UnreadThings::cancelRequests(not_null<Data::Thread*> thread) {
+	if (const auto requestId = _mentionsRequests.take(thread)) {
+		_api->request(*requestId).cancel();
+	}
+	if (const auto requestId = _reactionsRequests.take(thread)) {
+		_api->request(*requestId).cancel();
+	}
+}
+
+void UnreadThings::requestMentions(
+		not_null<Data::Thread*> thread,
+		int loaded) {
+	if (_mentionsRequests.contains(thread) || thread->asSublist()) {
+		return;
+	}
+	const auto offsetId = std::max(
+		thread->unreadMentions().maxLoaded(),
+		MsgId(1));
+	const auto limit = loaded ? kNextRequestLimit : kFirstRequestLimit;
+	const auto addOffset = loaded ? -(limit + 1) : -limit;
+	const auto maxId = 0;
+	const auto minId = 0;
+	const auto history = thread->owningHistory();
+	const auto topic = thread->asTopic();
+	using Flag = MTPmessages_GetUnreadMentions::Flag;
+	const auto requestId = _api->request(MTPmessages_GetUnreadMentions(
+		MTP_flags(topic ? Flag::f_top_msg_id : Flag()),
+		history->peer->input(),
+		MTP_int(topic ? topic->rootId() : 0),
+		MTP_int(offsetId),
+		MTP_int(addOffset),
+		MTP_int(limit),
+		MTP_int(maxId),
+		MTP_int(minId)
+	)).done([=](const MTPmessages_Messages &result) {
+		_mentionsRequests.remove(thread);
+		thread->unreadMentions().addSlice(result, loaded);
+	}).fail([=] {
+		_mentionsRequests.remove(thread);
+	}).send();
+	_mentionsRequests.emplace(thread, requestId);
+}
+
+void UnreadThings::requestReactions(
+		not_null<Data::Thread*> thread,
+		int loaded) {
+	if (_reactionsRequests.contains(thread)) {
+		return;
+	}
+	const auto offsetId = loaded
+		? std::max(thread->unreadReactions().maxLoaded(), MsgId(1))
+		: MsgId(1);
+	const auto limit = loaded ? kNextRequestLimit : kFirstRequestLimit;
+	const auto addOffset = loaded ? -(limit + 1) : -limit;
+	const auto maxId = 0;
+	const auto minId = 0;
+	const auto history = thread->owningHistory();
+	const auto sublist = thread->asSublist();
+	const auto topic = thread->asTopic();
+	using Flag = MTPmessages_GetUnreadReactions::Flag;
+	const auto requestId = _api->request(MTPmessages_GetUnreadReactions(
+		MTP_flags((topic ? Flag::f_top_msg_id : Flag())
+			| (sublist ? Flag::f_saved_peer_id : Flag())),
+		history->peer->input(),
+		MTP_int(topic ? topic->rootId() : 0),
+		(sublist ? sublist->sublistPeer()->input() : MTPInputPeer()),
+		MTP_int(offsetId),
+		MTP_int(addOffset),
+		MTP_int(limit),
+		MTP_int(maxId),
+		MTP_int(minId)
+	)).done([=](const MTPmessages_Messages &result) {
+		_reactionsRequests.remove(thread);
+		thread->unreadReactions().addSlice(result, loaded);
+	}).fail([=] {
+		_reactionsRequests.remove(thread);
+	}).send();
+	_reactionsRequests.emplace(thread, requestId);
+}
+
+} // namespace UnreadThings

Telegram/SourceFiles/api/api_unread_things.h

@@ -0,0 +1,49 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+class ApiWrap;
+class PeerData;
+class ChannelData;
+
+namespace Data {
+class Thread;
+} // namespace Data
+
+namespace Api {
+
+class UnreadThings final {
+public:
+	explicit UnreadThings(not_null<ApiWrap*> api);
+
+	[[nodiscard]] bool trackMentions(Data::Thread *thread) const;
+	[[nodiscard]] bool trackReactions(Data::Thread *thread) const;
+
+	void preloadEnough(Data::Thread *thread);
+
+	void mediaAndMentionsRead(
+		const base::flat_set<MsgId> &readIds,
+		ChannelData *channel = nullptr);
+
+	void cancelRequests(not_null<Data::Thread*> thread);
+
+private:
+	void preloadEnoughMentions(not_null<Data::Thread*> thread);
+	void preloadEnoughReactions(not_null<Data::Thread*> thread);
+
+	void requestMentions(not_null<Data::Thread*> thread, int loaded);
+	void requestReactions(not_null<Data::Thread*> thread, int loaded);
+
+	const not_null<ApiWrap*> _api;
+
+	base::flat_map<not_null<Data::Thread*>, mtpRequestId> _mentionsRequests;
+	base::flat_map<not_null<Data::Thread*>, mtpRequestId> _reactionsRequests;
+
+};
+
+} // namespace Api

Telegram/SourceFiles/api/api_updates.h

@@ -0,0 +1,223 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "data/data_pts_waiter.h"
+#include "base/timer.h"
+
+class ApiWrap;
+class History;
+
+namespace MTP {
+class Error;
+} // namespace MTP
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace ChatHelpers {
+struct EmojiInteractionsBunch;
+} // namespace ChatHelpers
+
+namespace Api {
+
+class Updates final {
+public:
+	explicit Updates(not_null<Main::Session*> session);
+
+	[[nodiscard]] Main::Session &session() const;
+	[[nodiscard]] ApiWrap &api() const;
+
+	void applyUpdates(
+		const MTPUpdates &updates,
+		uint64 sentMessageRandomId = 0);
+	void applyUpdatesNoPtsCheck(const MTPUpdates &updates);
+	void applyUpdateNoPtsCheck(const MTPUpdate &update);
+
+	void checkForSentToScheduled(const MTPUpdates &updates);
+
+	[[nodiscard]] int32 pts() const;
+
+	void updateOnline(crl::time lastNonIdleTime = 0);
+	[[nodiscard]] bool isIdle() const;
+	[[nodiscard]] rpl::producer<bool> isIdleValue() const;
+	void checkIdleFinish(crl::time lastNonIdleTime = 0);
+	bool lastWasOnline() const;
+	crl::time lastSetOnline() const;
+	bool isQuitPrevent();
+
+	bool updateAndApply(int32 pts, int32 ptsCount, const MTPUpdates &updates);
+	bool updateAndApply(int32 pts, int32 ptsCount, const MTPUpdate &update);
+	bool updateAndApply(int32 pts, int32 ptsCount);
+
+	void checkLastUpdate(bool afterSleep);
+
+	// ms <= 0 - stop timer
+	void ptsWaiterStartTimerFor(ChannelData *channel, crl::time ms);
+
+	void getDifference();
+	void requestChannelRangeDifference(not_null<History*> history);
+
+	void addActiveChat(rpl::producer<PeerData*> chat);
+	[[nodiscard]] bool inActiveChats(not_null<PeerData*> peer) const;
+
+private:
+	enum class ChannelDifferenceRequest {
+		Unknown,
+		PtsGapOrShortPoll,
+		AfterFail,
+	};
+
+	enum class SkipUpdatePolicy {
+		SkipNone,
+		SkipMessageIds,
+		SkipExceptGroupCallParticipants,
+	};
+
+	struct ActiveChatTracker {
+		PeerData *peer = nullptr;
+		rpl::lifetime lifetime;
+	};
+
+	void channelRangeDifferenceSend(
+		not_null<ChannelData*> channel,
+		MsgRange range,
+		int32 pts);
+	void channelRangeDifferenceDone(
+		not_null<ChannelData*> channel,
+		MsgRange range,
+		const MTPupdates_ChannelDifference &result);
+
+	void updateOnline(crl::time lastNonIdleTime, bool gotOtherOffline);
+	void sendPing();
+	void getDifferenceByPts();
+	void getDifferenceAfterFail();
+
+	[[nodiscard]] bool requestingDifference() const {
+		return _ptsWaiter.requesting();
+	}
+	void getChannelDifference(
+		not_null<ChannelData*> channel,
+		ChannelDifferenceRequest from = ChannelDifferenceRequest::Unknown);
+	void differenceDone(const MTPupdates_Difference &result);
+	void differenceFail(const MTP::Error &error);
+	void feedDifference(
+		const MTPVector<MTPUser> &users,
+		const MTPVector<MTPChat> &chats,
+		const MTPVector<MTPMessage> &msgs,
+		const MTPVector<MTPUpdate> &other);
+	void stateDone(const MTPupdates_State &state);
+	void setState(int32 pts, int32 date, int32 qts, int32 seq);
+	void channelDifferenceDone(
+		not_null<ChannelData*> channel,
+		const MTPupdates_ChannelDifference &diff);
+	void channelDifferenceFail(
+		not_null<ChannelData*> channel,
+		const MTP::Error &error);
+	void failDifferenceStartTimerFor(ChannelData *channel);
+	void feedChannelDifference(const MTPDupdates_channelDifference &data);
+
+	void mtpUpdateReceived(const MTPUpdates &updates);
+	void mtpNewSessionCreated();
+	void feedUpdateVector(
+		const MTPVector<MTPUpdate> &updates,
+		SkipUpdatePolicy policy = SkipUpdatePolicy::SkipNone);
+	// Doesn't call sendHistoryChangeNotifications itself.
+	void feedMessageIds(const MTPVector<MTPUpdate> &updates);
+	// Doesn't call sendHistoryChangeNotifications itself.
+	void feedUpdate(const MTPUpdate &update);
+
+	void applyConvertToScheduledOnSend(
+		const MTPVector<MTPUpdate> &other,
+		bool skipScheduledCheck = false);
+	void applyGroupCallParticipantUpdates(const MTPUpdates &updates);
+
+	bool whenGetDiffChanged(
+		ChannelData *channel,
+		int32 ms,
+		base::flat_map<not_null<ChannelData*>, crl::time> &whenMap,
+		crl::time &curTime);
+
+	void handleSendActionUpdate(
+		PeerId peerId,
+		MsgId rootId,
+		PeerId fromId,
+		const MTPSendMessageAction &action);
+	void handleEmojiInteraction(
+		not_null<PeerData*> peer,
+		const MTPDsendMessageEmojiInteraction &data);
+	void handleSpeakingInCall(
+		not_null<PeerData*> peer,
+		PeerId participantPeerId,
+		PeerData *participantPeerLoaded);
+	void handleEmojiInteraction(
+		not_null<PeerData*> peer,
+		MsgId messageId,
+		const QString &emoticon,
+		ChatHelpers::EmojiInteractionsBunch bunch);
+	void handleEmojiInteraction(
+		not_null<PeerData*> peer,
+		const QString &emoticon);
+
+	const not_null<Main::Session*> _session;
+
+	int32 _updatesDate = 0;
+	int32 _updatesQts = -1;
+	int32 _updatesSeq = 0;
+	base::Timer _noUpdatesTimer;
+	base::Timer _onlineTimer;
+
+	PtsWaiter _ptsWaiter;
+
+	base::flat_map<not_null<ChannelData*>, crl::time> _whenGetDiffByPts;
+	base::flat_map<not_null<ChannelData*>, crl::time> _whenGetDiffAfterFail;
+	crl::time _getDifferenceTimeByPts = 0;
+	crl::time _getDifferenceTimeAfterFail = 0;
+
+	base::Timer _byPtsTimer;
+
+	base::flat_map<int32, MTPUpdates> _bySeqUpdates;
+	base::Timer _bySeqTimer;
+
+	base::Timer _byMinChannelTimer;
+
+	// growing timeout for getDifference calls, if it fails
+	crl::time _failDifferenceTimeout = 1;
+	// growing timeout for getChannelDifference calls, if it fails
+	base::flat_map<
+		not_null<ChannelData*>,
+		crl::time> _channelFailDifferenceTimeout;
+	base::Timer _failDifferenceTimer;
+
+	base::flat_map<
+		not_null<ChannelData*>,
+		mtpRequestId> _rangeDifferenceRequests;
+
+	crl::time _lastUpdateTime = 0;
+	bool _handlingChannelDifference = false;
+
+	base::flat_map<int, ActiveChatTracker> _activeChats;
+	base::flat_map<
+		not_null<PeerData*>,
+		base::flat_map<PeerId, crl::time>> _pendingSpeakingCallParticipants;
+
+	mtpRequestId _onlineRequest = 0;
+	base::Timer _idleFinishTimer;
+	crl::time _lastSetOnline = 0;
+	bool _lastWasOnline = false;
+	rpl::variable<bool> _isIdle = false;
+
+	rpl::lifetime _lifetime;
+
+};
+
+[[nodiscard]] bool IsWithdrawalNotification(
+	const MTPDupdateServiceNotification &);
+
+} // namespace Api

Telegram/SourceFiles/api/api_user_names.cpp

@@ -0,0 +1,264 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_user_names.h"
+
+#include "apiwrap.h"
+#include "data/data_channel.h"
+#include "data/data_peer.h"
+#include "data/data_user.h"
+#include "main/main_session.h"
+
+namespace Api {
+namespace {
+
+[[nodiscard]] Data::Username UsernameFromTL(const MTPUsername &username) {
+	return {
+		.username = qs(username.data().vusername()),
+		.active = username.data().is_active(),
+		.editable = username.data().is_editable(),
+	};
+}
+
+[[nodiscard]] std::optional<MTPInputUser> BotUserInput(
+		not_null<PeerData*> peer) {
+	const auto user = peer->asUser();
+	return (user && user->botInfo && user->botInfo->canEditInformation)
+		? std::make_optional<MTPInputUser>(user->inputUser())
+		: std::nullopt;
+}
+
+} // namespace
+
+Usernames::Usernames(not_null<ApiWrap*> api)
+: _session(&api->session())
+, _api(&api->instance()) {
+}
+
+rpl::producer<Data::Usernames> Usernames::loadUsernames(
+		not_null<PeerData*> peer) const {
+	return [=](auto consumer) {
+		auto lifetime = rpl::lifetime();
+
+		const auto push = [consumer](
+				const auto &usernames,
+				const auto &username) {
+			if (usernames) {
+				if (usernames->v.empty()) {
+					// Probably will never happen.
+					consumer.put_next({});
+				} else {
+					auto parsed = FromTL(*usernames);
+					if ((parsed.size() == 1)
+						&& username
+						&& (parsed.front().username == qs(*username))) {
+						// Probably will never happen.
+						consumer.put_next({});
+					} else {
+						consumer.put_next(std::move(parsed));
+					}
+				}
+			} else {
+				consumer.put_next({});
+			}
+		};
+
+		const auto requestUser = [&](const MTPInputUser &data) {
+			_session->api().request(MTPusers_GetUsers(
+				MTP_vector<MTPInputUser>(1, data)
+			)).done([=](const MTPVector<MTPUser> &result) {
+				result.v.front().match([&](const MTPDuser &data) {
+					push(data.vusernames(), data.vusername());
+					consumer.put_done();
+				}, [&](const MTPDuserEmpty&) {
+					consumer.put_next({});
+					consumer.put_done();
+				});
+			}).send();
+		};
+		const auto requestChannel = [&](const MTPInputChannel &data) {
+			_session->api().request(MTPchannels_GetChannels(
+				MTP_vector<MTPInputChannel>(1, data)
+			)).done([=](const MTPmessages_Chats &result) {
+				result.match([&](const auto &data) {
+					data.vchats().v.front().match([&](const MTPDchannel &c) {
+						push(c.vusernames(), c.vusername());
+						consumer.put_done();
+					}, [&](auto &&) {
+						consumer.put_next({});
+						consumer.put_done();
+					});
+				});
+			}).send();
+		};
+		if (peer->isSelf()) {
+			requestUser(MTP_inputUserSelf());
+		} else if (const auto user = peer->asUser()) {
+			requestUser(user->inputUser());
+		} else if (const auto channel = peer->asChannel()) {
+			requestChannel(channel->inputChannel());
+		}
+		return lifetime;
+	};
+}
+
+rpl::producer<rpl::no_value, Usernames::Error> Usernames::toggle(
+		not_null<PeerData*> peer,
+		const QString &username,
+		bool active) {
+	const auto peerId = peer->id;
+	const auto it = _toggleRequests.find(peerId);
+	const auto found = (it != end(_toggleRequests));
+	auto &entry = (!found
+		? _toggleRequests.emplace(
+			peerId,
+			Entry{ .usernames = { username } }).first
+		: it)->second;
+	if (ranges::contains(entry.usernames, username)) {
+		if (found) {
+			return entry.done.events();
+		}
+	} else {
+		entry.usernames.push_back(username);
+	}
+
+	const auto pop = [=](Error error) {
+		const auto it = _toggleRequests.find(peerId);
+		if (it != end(_toggleRequests)) {
+			auto &list = it->second.usernames;
+			list.erase(ranges::remove(list, username), end(list));
+			if (list.empty()) {
+				if (error == Error::Unknown) {
+					it->second.done.fire_done();
+				} else {
+					it->second.done.fire_error_copy(error);
+				}
+				_toggleRequests.remove(peerId);
+			}
+		}
+	};
+
+	const auto done = [=] {
+		pop(Error::Unknown);
+	};
+	const auto fail = [=](const MTP::Error &error) {
+		const auto type = error.type();
+		if (type == u"USERNAMES_ACTIVE_TOO_MUCH"_q) {
+			pop(Error::TooMuch);
+		} else if (type.startsWith(u"FLOOD_WAIT_"_q)) {
+			pop(Error::Flood);
+		} else {
+			pop(Error::Unknown);
+		}
+	};
+
+	if (peer->isSelf()) {
+		_api.request(MTPaccount_ToggleUsername(
+			MTP_string(username),
+			MTP_bool(active)
+		)).done(done).fail(fail).handleFloodErrors().send();
+	} else if (const auto channel = peer->asChannel()) {
+		_api.request(MTPchannels_ToggleUsername(
+			channel->inputChannel(),
+			MTP_string(username),
+			MTP_bool(active)
+		)).done(done).fail(fail).handleFloodErrors().send();
+	} else if (const auto botUserInput = BotUserInput(peer)) {
+		_api.request(MTPbots_ToggleUsername(
+			*botUserInput,
+			MTP_string(username),
+			MTP_bool(active)
+		)).done(done).fail(fail).handleFloodErrors().send();
+	} else {
+		return rpl::never<rpl::no_value, Error>();
+	}
+	return entry.done.events();
+}
+
+rpl::producer<> Usernames::reorder(
+		not_null<PeerData*> peer,
+		const std::vector<QString> &usernames) {
+	const auto peerId = peer->id;
+	const auto it = _reorderRequests.find(peerId);
+	if (it != end(_reorderRequests)) {
+		_api.request(it->second).cancel();
+		_reorderRequests.erase(peerId);
+	}
+
+	return [=](auto consumer) {
+		auto lifetime = rpl::lifetime();
+
+		auto tlUsernames = ranges::views::all(
+			usernames
+		) | ranges::views::transform([](const QString &username) {
+			return MTP_string(username);
+		}) | ranges::to<QVector<MTPstring>>;
+
+		const auto finish = [=] {
+			if (_reorderRequests.contains(peerId)) {
+				_reorderRequests.erase(peerId);
+			}
+			consumer.put_done();
+		};
+		if (usernames.empty()) {
+			crl::on_main([=] { consumer.put_done(); });
+			return lifetime;
+		}
+
+		if (peer->isSelf()) {
+			const auto requestId = _api.request(MTPaccount_ReorderUsernames(
+				MTP_vector<MTPstring>(std::move(tlUsernames))
+			)).done(finish).fail(finish).send();
+			_reorderRequests.emplace(peerId, requestId);
+		} else if (const auto channel = peer->asChannel()) {
+			const auto requestId = _api.request(MTPchannels_ReorderUsernames(
+				channel->inputChannel(),
+				MTP_vector<MTPstring>(std::move(tlUsernames))
+			)).done(finish).fail(finish).send();
+			_reorderRequests.emplace(peerId, requestId);
+		} else if (const auto botUserInput = BotUserInput(peer)) {
+			const auto requestId = _api.request(MTPbots_ReorderUsernames(
+				*botUserInput,
+				MTP_vector<MTPstring>(std::move(tlUsernames))
+			)).done(finish).fail(finish).send();
+			_reorderRequests.emplace(peerId, requestId);
+		}
+		return lifetime;
+	};
+}
+
+Data::Usernames Usernames::FromTL(const MTPVector<MTPUsername> &usernames) {
+	return ranges::views::all(
+		usernames.v
+	) | ranges::views::transform(UsernameFromTL) | ranges::to_vector;
+}
+
+void Usernames::requestToCache(not_null<PeerData*> peer) {
+	_tinyCache = {};
+	if (const auto user = peer->asUser()) {
+		if (user->usernames().empty()) {
+			return;
+		}
+	} else if (const auto channel = peer->asChannel()) {
+		if (channel->usernames().empty()) {
+			return;
+		}
+	}
+	const auto lifetime = std::make_shared<rpl::lifetime>();
+	*lifetime = loadUsernames(
+		peer
+	) | rpl::on_next([=, id = peer->id](Data::Usernames usernames) {
+		_tinyCache = std::make_pair(id, std::move(usernames));
+		lifetime->destroy();
+	});
+}
+
+Data::Usernames Usernames::cacheFor(PeerId id) {
+	return (_tinyCache.first == id) ? _tinyCache.second : Data::Usernames();
+}
+
+} // namespace Api

Telegram/SourceFiles/api/api_user_names.h

@@ -0,0 +1,64 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "data/data_user_names.h"
+#include "mtproto/sender.h"
+
+class ApiWrap;
+class PeerData;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Api {
+
+class Usernames final {
+public:
+	enum class Error {
+		TooMuch,
+		Flood,
+		Unknown,
+	};
+
+	explicit Usernames(not_null<ApiWrap*> api);
+
+	[[nodiscard]] rpl::producer<Data::Usernames> loadUsernames(
+		not_null<PeerData*> peer) const;
+	[[nodiscard]] rpl::producer<rpl::no_value, Error> toggle(
+		not_null<PeerData*> peer,
+		const QString &username,
+		bool active);
+	[[nodiscard]] rpl::producer<> reorder(
+		not_null<PeerData*> peer,
+		const std::vector<QString> &usernames);
+
+	void requestToCache(not_null<PeerData*> peer);
+	[[nodiscard]] Data::Usernames cacheFor(PeerId id);
+
+	static Data::Usernames FromTL(const MTPVector<MTPUsername> &usernames);
+
+private:
+
+	const not_null<Main::Session*> _session;
+	MTP::Sender _api;
+
+	using Key = PeerId;
+	struct Entry final {
+		rpl::event_stream<rpl::no_value, Error> done;
+		std::vector<QString> usernames;
+	};
+	base::flat_map<Key, Entry> _toggleRequests;
+	base::flat_map<Key, mtpRequestId> _reorderRequests;
+	// Used for a seamless display of usernames list.
+	std::pair<Key, Data::Usernames> _tinyCache;
+
+};
+
+} // namespace Api