/*
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

namespace Storage {
class Downloader;
} // namespace Storage

namespace Window {
namespace Notifications {
class System;
} // namespace Notifications
} // namespace Window

class AuthSession final {
public:
	AuthSession(UserId userId);

	AuthSession(const AuthSession &other) = delete;
	AuthSession &operator=(const AuthSession &other) = delete;

	static bool Exists();

	static AuthSession &Current();
	static UserId CurrentUserId() {
		return Current().userId();
	}
	static PeerId CurrentUserPeerId() {
		return peerFromUser(CurrentUserId());
	}
	static UserData *CurrentUser();

	UserId userId() const {
		return _userId;
	}
	bool validateSelf(const MTPUser &user);

	Storage::Downloader *downloader() {
		return _downloader.get();
	}

	static base::Observable<void> &CurrentDownloaderTaskFinished();

	Window::Notifications::System *notifications() {
		return _notifications.get();
	}

	~AuthSession();

private:
	UserId _userId = 0;

	const std::unique_ptr<Storage::Downloader> _downloader;
	const std::unique_ptr<Window::Notifications::System> _notifications;

};