/*
 * Copyright (c) 2018-2019 Albert S. <mail at quitesimple dot org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include <QApplication>
#include <QCommandLineParser>
#include <QFuture>
#include <QFutureWatcher>
#include <QtConcurrent/QtConcurrentRun>
#include <QSettings>
#include <QLocalSocket>
#include <QDir>
#include "settingsprovider.h"
#include "entryprovider.h"
#include "window.h"
#include "singleinstanceserver.h"

int main(int argc, char *argv[])
{
	QApplication app(argc, argv);
	QString configDirectoryPath;
	QDir dir;
	bool newInstanceRequested = false;
	if(argc >= 2)
	{
		QCommandLineParser parser;
		parser.addOptions({
			{"new-instance", "Launch a new instance, ignoring any running ones"},
			{"config", "Use supplied config dir instead of default"},
		});
		parser.addHelpOption();
		parser.process(app.arguments());
		configDirectoryPath = parser.value("config");
		newInstanceRequested = parser.isSet("new-instance");

		if(!configDirectoryPath.isEmpty() && !dir.exists(configDirectoryPath))
		{
			QMessageBox::warning(nullptr, "Directory not found", configDirectoryPath + " was not found");
			return 1;
		}
	}
	if(configDirectoryPath.isEmpty())
	{
		configDirectoryPath = QDir::homePath() + "/.config/qsrun/";
	}

	qRegisterMetaType<QVector<QString>>("QVector<QString>");

	if(!dir.exists(configDirectoryPath))
	{
		if(!dir.mkdir(configDirectoryPath))
		{
			QMessageBox::warning(nullptr, "Failed to create dir",
								 configDirectoryPath + " was not found and could not be created!");
			return 1;
		}
	}

	QSettings settings(configDirectoryPath + "qsrun.config", QSettings::NativeFormat);

	SettingsProvider settingsProvider{settings};
	EntryProvider entryProvider(settingsProvider.userEntriesPaths(), settingsProvider.systemApplicationsEntriesPaths());

	SingleInstanceServer *server = nullptr;

	bool singleInstanceMode = !newInstanceRequested && settingsProvider.singleInstanceMode();
	if(singleInstanceMode)
	{
		QLocalSocket localSocket;
		localSocket.connectToServer(settingsProvider.socketPath());
		if(localSocket.isOpen() && localSocket.isWritable())
		{
			QDataStream stream(&localSocket);
			stream << (int)0x01; // maximize
			localSocket.flush();
			localSocket.waitForBytesWritten();
			localSocket.disconnectFromServer();
			return 0;
		}

		server = new SingleInstanceServer();
		if(!server->listen(settingsProvider.socketPath()))
		{
			qDebug() << "Failed to listen on socket!";
			return 1;
		}
	}

	Window *w = new Window{entryProvider, settingsProvider};
	if(singleInstanceMode && server != nullptr)
	{
		QObject::connect(server, &SingleInstanceServer::receivedMaximizationRequest, [&w] {
			if(w != nullptr)
			{
				qInfo() << "maximizing as requested by other instance";
				w->showMaximized();
				w->activateWindow();
				w->raise();
				w->focusInput();
			}
		});
	}

	w->showMaximized();
	w->focusInput();

	return app.exec();
}