tdesktop/Telegram/SourceFiles/localstorage.h

/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org

Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.

Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
*/
#pragma once

#include "core/basic_types.h"

namespace _local_inner {

	class Manager : public QObject {
	Q_OBJECT

	public:

		Manager();

		void writeMap(bool fast);
		void writingMap();
		void writeLocations(bool fast);
		void writingLocations();
		void finish();

	public slots:

		void mapWriteTimeout();
		void locationsWriteTimeout();

	private:

		QTimer _mapWriteTimer;
		QTimer _locationsWriteTimer;

	};

}

namespace Local {

	void start();
	void finish();

	void readSettings();
	void writeSettings();
	void writeUserSettings();
	void writeMtpData();

	void reset();

	bool checkPasscode(const QByteArray &passcode);
	void setPasscode(const QByteArray &passcode);

	enum ClearManagerTask {
		ClearManagerAll = 0xFFFF,
		ClearManagerDownloads = 0x01,
		ClearManagerStorage = 0x02,
	};

	struct ClearManagerData;
	class ClearManager : public QObject {
		Q_OBJECT

	public:
		ClearManager();
		bool addTask(int task);
		bool hasTask(ClearManagerTask task);
		void start();
		~ClearManager();

	public slots:
		void onStart();

	signals:
		void succeed(int task, void *manager);
		void failed(int task, void *manager);

	private:
		ClearManagerData *data;

	};

	enum ReadMapState {
		ReadMapFailed = 0,
		ReadMapDone = 1,
		ReadMapPassNeeded = 2,
	};
	ReadMapState readMap(const QByteArray &pass);
	int32 oldMapVersion();

	int32 oldSettingsVersion();

	using TextWithTags = FlatTextarea::TextWithTags;
	struct MessageDraft {
		MessageDraft(MsgId msgId = 0, TextWithTags textWithTags = TextWithTags(), bool previewCancelled = false)
			: msgId(msgId)
			, textWithTags(textWithTags)
			, previewCancelled(previewCancelled) {
		}
		MsgId msgId;
		TextWithTags textWithTags;
		bool previewCancelled;
	};
	void writeDrafts(const PeerId &peer, const MessageDraft &msgDraft, const MessageDraft &editDraft);
	void readDraftsWithCursors(History *h);
	void writeDraftCursors(const PeerId &peer, const MessageCursor &msgCursor, const MessageCursor &editCursor);
	bool hasDraftCursors(const PeerId &peer);

	void writeFileLocation(MediaKey location, const FileLocation &local);
	FileLocation readFileLocation(MediaKey location, bool check = true);

	void writeImage(const StorageKey &location, const ImagePtr &img);
	void writeImage(const StorageKey &location, const StorageImageSaved &jpeg, bool overwrite = true);
	TaskId startImageLoad(const StorageKey &location, mtpFileLoader *loader);
	int32 hasImages();
	qint64 storageImagesSize();

	void writeStickerImage(const StorageKey &location, const QByteArray &data, bool overwrite = true);
	TaskId startStickerImageLoad(const StorageKey &location, mtpFileLoader *loader);
	bool willStickerImageLoad(const StorageKey &location);
	bool copyStickerImage(const StorageKey &oldLocation, const StorageKey &newLocation);
	int32 hasStickers();
	qint64 storageStickersSize();

	void writeAudio(const StorageKey &location, const QByteArray &data, bool overwrite = true);
	TaskId startAudioLoad(const StorageKey &location, mtpFileLoader *loader);
	bool copyAudio(const StorageKey &oldLocation, const StorageKey &newLocation);
	int32 hasAudios();
	qint64 storageAudiosSize();

	void writeWebFile(const QString &url, const QByteArray &data, bool overwrite = true);
	TaskId startWebFileLoad(const QString &url, webFileLoader *loader);
	int32 hasWebFiles();
	qint64 storageWebFilesSize();

	void countVoiceWaveform(DocumentData *document);

	void cancelTask(TaskId id);

	void writeStickers();
	void readStickers();
	int32 countStickersHash(bool checkOfficial = false);

	void writeSavedGifs();
	void readSavedGifs();
	int32 countSavedGifsHash();

	void writeBackground(int32 id, const QImage &img);
	bool readBackground();

	void writeRecentHashtagsAndBots();
	void readRecentHashtagsAndBots();

	void addSavedPeer(PeerData *peer, const QDateTime &position);
	void removeSavedPeer(PeerData *peer);
	void readSavedPeers();

	void writeReportSpamStatuses();

};