//
// This file is part of Kepka,
// an unofficial desktop version of Telegram messaging app,
// see https://github.com/procxx/kepka
//
// Kepka 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/procxx/kepka/blob/master/LICENSE
// Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
// Copyright (c) 2017- Kepka Contributors, https://github.com/procxx
//
#pragma once

#include <memory>

#include <QApplication>
#include <QLocalServer>
#include <QLocalSocket>

class Messenger;

class Application : public QApplication {
	Q_OBJECT

public:
	Application(int &argc, char **argv);

	bool event(QEvent *e) override;

	void createMessenger();

	~Application();

signals:
	void adjustSingleTimers();

	// Single instance application
public slots:
	void socketConnected();
	void socketError(QLocalSocket::LocalSocketError e);
	void socketDisconnected();
	void socketWritten(qint64 bytes);
	void socketReading();
	void newInstanceConnected();

	void readClients();
	void removeClients();

	void startApplication(); // will be done in exec()
	void closeApplication(); // will be done in aboutToQuit()

private:
	typedef QPair<QLocalSocket *, QByteArray> LocalClient;
	typedef QList<LocalClient> LocalClients;

	std::unique_ptr<Messenger> _messengerInstance;

	QString _localServerName, _localSocketReadData;
	QLocalServer _localServer;
	QLocalSocket _localSocket;
	LocalClients _localClients;
	bool _secondInstance = false;

	void singleInstanceChecked();
};

namespace Sandbox {

QRect availableGeometry();
QRect screenGeometry(const QPoint &p);
void setActiveWindow(QWidget *window);
bool isSavingSession();

void execExternal(const QString &cmd);

void adjustSingleTimers();

void connect(const char *signal, QObject *object, const char *method);

void launch();

} // namespace Sandbox