/*
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) 2014-2017 John Preston, https://desktop.telegram.org
*/
#pragma once

#include "data/data_types.h"

class PhotoData {
public:
	PhotoData(
		const PhotoId &id,
		const uint64 &access = 0,
		int32 date = 0,
		const ImagePtr &thumb = ImagePtr(),
		const ImagePtr &medium = ImagePtr(),
		const ImagePtr &full = ImagePtr());

	void automaticLoad(const HistoryItem *item);
	void automaticLoadSettingsChanged();

	void download();
	bool loaded() const;
	bool loading() const;
	bool displayLoading() const;
	void cancel();
	float64 progress() const;
	int32 loadOffset() const;
	bool uploading() const;

	void forget();
	ImagePtr makeReplyPreview();

	PhotoId id;
	uint64 access;
	int32 date;
	ImagePtr thumb, replyPreview;
	ImagePtr medium;
	ImagePtr full;

	PeerData *peer = nullptr; // for chat and channel photos connection
	// geo, caption

	struct UploadingData {
		UploadingData(int size) : size(size) {
		}
		int offset = 0;
		int size = 0;
	};
	std::unique_ptr<UploadingData> uploadingData;

private:
	void notifyLayoutChanged() const;

};

class PhotoClickHandler : public LeftButtonClickHandler {
public:
	PhotoClickHandler(
		not_null<PhotoData*> photo,
		FullMsgId context = FullMsgId(),
		PeerData *peer = nullptr)
	: _photo(photo)
	, _context(context)
	, _peer(peer) {
	}
	not_null<PhotoData*> photo() const {
		return _photo;
	}
	PeerData *peer() const {
		return _peer;
	}
	FullMsgId context() const {
		return _context;
	}

private:
	not_null<PhotoData*> _photo;
	FullMsgId _context;
	PeerData *_peer = nullptr;

};

class PhotoOpenClickHandler : public PhotoClickHandler {
public:
	using PhotoClickHandler::PhotoClickHandler;

protected:
	void onClickImpl() const override;

};

class PhotoSaveClickHandler : public PhotoClickHandler {
public:
	using PhotoClickHandler::PhotoClickHandler;

protected:
	void onClickImpl() const override;

};

class PhotoCancelClickHandler : public PhotoClickHandler {
public:
	using PhotoClickHandler::PhotoClickHandler;

protected:
	void onClickImpl() const override;

};