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Telegram/SourceFiles/history/history_streamed_drafts.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 "base/timer.h"
+#include "base/weak_ptr.h"
+
+class History;
+
+class HistoryStreamedDrafts final : public base::has_weak_ptr {
+public:
+	explicit HistoryStreamedDrafts(not_null<History*> history);
+	~HistoryStreamedDrafts();
+
+	[[nodiscard]] rpl::producer<> destroyRequests() const;
+
+	void apply(
+		MsgId rootId,
+		PeerId fromId,
+		TimeId when,
+		const MTPDsendMessageTextDraftAction &data);
+
+	void applyItemAdded(not_null<HistoryItem*> item);
+
+private:
+	struct Draft {
+		not_null<HistoryItem*> message;
+		uint64 randomId = 0;
+		crl::time updated = 0;
+	};
+
+	bool update(MsgId rootId, uint64 randomId, const TextWithEntities &text);
+	void clear(MsgId rootId);
+
+	void check();
+	void scheduleDestroy();
+
+	const not_null<History*> _history;
+	base::flat_map<MsgId, Draft> _drafts;
+
+	base::Timer _checkTimer;
+
+	rpl::event_stream<> _destroyRequests;
+
+};