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Telegram/SourceFiles/mtproto/facade.h

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+/*
+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/type_utils.h"
+#include "mtproto/mtp_instance.h"
+
+namespace MTP {
+namespace details {
+
+[[nodiscard]] bool paused();
+void pause();
+void unpause();
+[[nodiscard]] rpl::producer<> unpaused();
+
+} // namespace details
+
+// send(MTPhelp_GetConfig(), MTP::configDcId(dc)) - for dc enumeration
+constexpr ShiftedDcId configDcId(DcId dcId) {
+	return ShiftDcId(dcId, kConfigDcShift);
+}
+
+// send(MTPauth_LogOut(), MTP::logoutDcId(dc)) - for logout of guest dcs enumeration
+constexpr ShiftedDcId logoutDcId(DcId dcId) {
+	return ShiftDcId(dcId, kLogoutDcShift);
+}
+
+// send(MTPupload_GetFile(), MTP::updaterDcId(dc)) - for autoupdater
+constexpr ShiftedDcId updaterDcId(DcId dcId) {
+	return ShiftDcId(dcId, kUpdaterDcShift);
+}
+
+// send(MTPupload_GetFile(), MTP::groupCallStreamDcId(dc)) - for group call stream
+constexpr ShiftedDcId groupCallStreamDcId(DcId dcId) {
+	return ShiftDcId(dcId, kGroupCallStreamDcShift);
+}
+
+namespace details {
+
+constexpr ShiftedDcId downloadDcId(DcId dcId, int index) {
+	Expects(index < kMaxMediaDcCount);
+
+	return ShiftDcId(dcId, kBaseDownloadDcShift + index);
+};
+
+} // namespace details
+
+// send(req, callbacks, MTP::downloadDcId(dc, index)) - for download shifted dc id
+inline ShiftedDcId downloadDcId(DcId dcId, int index) {
+	return details::downloadDcId(dcId, index);
+}
+
+inline constexpr bool isDownloadDcId(ShiftedDcId shiftedDcId) {
+	return (shiftedDcId >= details::downloadDcId(0, 0))
+		&& (shiftedDcId < details::downloadDcId(0, kMaxMediaDcCount - 1) + kDcShift);
+}
+
+inline constexpr bool isMediaClusterDcId(ShiftedDcId shiftedDcId) {
+	const auto shift = GetDcIdShift(shiftedDcId);
+	return isDownloadDcId(shiftedDcId)
+		|| (shift == kGroupCallStreamDcShift)
+		|| (shift == kExportMediaDcShift)
+		|| (shift == kUpdaterDcShift);
+}
+
+inline bool isCdnDc(MTPDdcOption::Flags flags) {
+	return (flags & MTPDdcOption::Flag::f_cdn);
+}
+
+inline bool isTemporaryDcId(ShiftedDcId shiftedDcId) {
+	auto dcId = BareDcId(shiftedDcId);
+	return (dcId >= Instance::Fields::kTemporaryMainDc);
+}
+
+inline DcId getRealIdFromTemporaryDcId(ShiftedDcId shiftedDcId) {
+	auto dcId = BareDcId(shiftedDcId);
+	return (dcId >= Instance::Fields::kTemporaryMainDc) ? (dcId - Instance::Fields::kTemporaryMainDc) : 0;
+}
+
+inline DcId getTemporaryIdFromRealDcId(ShiftedDcId shiftedDcId) {
+	auto dcId = BareDcId(shiftedDcId);
+	return (dcId < Instance::Fields::kTemporaryMainDc) ? (dcId + Instance::Fields::kTemporaryMainDc) : 0;
+}
+
+namespace details {
+
+constexpr ShiftedDcId uploadDcId(DcId dcId, int index) {
+	return ShiftDcId(dcId, kBaseUploadDcShift + index);
+};
+
+} // namespace details
+
+// send(req, callbacks, MTP::uploadDcId(index)) - for upload shifted dc id
+// uploading always to the main dc so BareDcId(result) == 0
+inline ShiftedDcId uploadDcId(int index) {
+	Expects(index >= 0 && index < kMaxMediaDcCount);
+
+	return details::uploadDcId(0, index);
+};
+
+constexpr bool isUploadDcId(ShiftedDcId shiftedDcId) {
+	return (shiftedDcId >= details::uploadDcId(0, 0))
+		&& (shiftedDcId < details::uploadDcId(0, kMaxMediaDcCount - 1) + kDcShift);
+}
+
+inline ShiftedDcId destroyKeyNextDcId(ShiftedDcId shiftedDcId) {
+	const auto shift = GetDcIdShift(shiftedDcId);
+	return ShiftDcId(BareDcId(shiftedDcId), shift ? (shift + 1) : kDestroyKeyStartDcShift);
+}
+
+enum {
+	DisconnectedState = 0,
+	ConnectingState = 1,
+	ConnectedState = 2,
+};
+
+enum {
+	RequestSent = 0,
+	RequestConnecting = 1,
+	RequestSending = 2
+};
+
+} // namespace MTP