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Telegram/SourceFiles/data/components/scheduled_messages.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 "history/history_item.h"
+#include "base/timer.h"
+
+class History;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Data {
+
+struct MessagesSlice;
+
+[[nodiscard]] bool IsScheduledMsgId(MsgId id);
+
+class ScheduledMessages final {
+public:
+	explicit ScheduledMessages(not_null<Main::Session*> session);
+	ScheduledMessages(const ScheduledMessages &other) = delete;
+	ScheduledMessages &operator=(const ScheduledMessages &other) = delete;
+	~ScheduledMessages();
+
+	[[nodiscard]] MsgId lookupId(not_null<const HistoryItem*> item) const;
+	[[nodiscard]] HistoryItem *lookupItem(PeerId peer, MsgId msg) const;
+	[[nodiscard]] HistoryItem *lookupItem(FullMsgId itemId) const;
+	[[nodiscard]] int count(not_null<History*> history) const;
+	[[nodiscard]] bool hasFor(not_null<Data::ForumTopic*> topic) const;
+	[[nodiscard]] MsgId localMessageId(MsgId remoteId) const;
+
+	void checkEntitiesAndUpdate(const MTPDmessage &data);
+	void apply(const MTPDupdateNewScheduledMessage &update);
+	void apply(const MTPDupdateDeleteScheduledMessages &update);
+	void apply(
+		const MTPDupdateMessageID &update,
+		not_null<HistoryItem*> local);
+
+	void appendSending(not_null<HistoryItem*> item);
+	void removeSending(not_null<HistoryItem*> item);
+
+	void sendNowSimpleMessage(
+		const MTPDupdateShortSentMessage &update,
+		not_null<HistoryItem*> local);
+
+	[[nodiscard]] rpl::producer<> updates(not_null<History*> history);
+	[[nodiscard]] Data::MessagesSlice list(not_null<History*> history) const;
+	[[nodiscard]] Data::MessagesSlice list(
+		not_null<const Data::ForumTopic*> topic) const;
+
+	void clear();
+
+private:
+	using OwnedItem = std::unique_ptr<HistoryItem, HistoryItem::Destroyer>;
+	struct List {
+		std::vector<OwnedItem> items;
+		base::flat_map<MsgId, not_null<HistoryItem*>> itemById;
+	};
+	struct Request {
+		mtpRequestId requestId = 0;
+		crl::time lastReceived = 0;
+	};
+
+	void request(not_null<History*> history);
+	void parse(
+		not_null<History*> history,
+		const MTPmessages_Messages &list);
+	HistoryItem *append(
+		not_null<History*> history,
+		List &list,
+		const MTPMessage &message);
+	void clearNotSending(not_null<History*> history);
+	void updated(
+		not_null<History*> history,
+		const base::flat_set<not_null<HistoryItem*>> &added,
+		const base::flat_set<not_null<HistoryItem*>> &clear);
+	void sort(List &list);
+	void remove(not_null<const HistoryItem*> item);
+	[[nodiscard]] uint64 countListHash(const List &list) const;
+	void clearOldRequests();
+
+	const not_null<Main::Session*> _session;
+
+	base::Timer _clearTimer;
+	base::flat_map<not_null<History*>, List> _data;
+	base::flat_map<not_null<History*>, Request> _requests;
+	rpl::event_stream<not_null<History*>> _updates;
+
+	rpl::lifetime _lifetime;
+
+};
+
+} // namespace Data