// Copyright © 2010-2012 b0ris
//.
// This program 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 2
// of the License, or (at your option) any later version.
//.
// This program 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.
//.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

#ifdef WIN32
    #define ClientName      "client.exe"
	#define UpdaterName		"updater.exe"
	#define PathSlash		"\\"
#else
    #define ClientName      "client"
	#define UpdaterName		"updater"
	#define PathSlash		"/"
#endif
#include <QFileInfo>
#include <QProcess>
#include <QString>
#include <string>
#include "client.h"
#include "ProxyClientApp.h"
#include "Utility.h"

using std::string;

ProxyClientApp *this_app;

int main(int argc, char *argv[])
{
	Logger::InitLogFile();
	Logger::Info("Starting client application\n");
	string path = argv[0];
	QString dir;	
	size_t p = path.find_last_of(PathSlash);
	if (p == string::npos)
	{
		dir = QString::fromStdString(".");
	}
	else
	{
		dir = QString::fromStdString(path.substr(0, p));
	}
	
	// check if the client should be updated
	QFileInfo newClient(dir + PathSlash + "client.bin.latest");
    QFileInfo client(dir + PathSlash + ClientName);
	if (newClient.exists())
    {
        QString clentName = client.fileName();
        QString newClientName = newClient.fileName();
        QByteArray md5old = md5_sum(clentName);
        QByteArray md5new = md5_sum(newClientName);
        if (md5old != md5new)
        {
            Logger::Info("New client version found!\n");
            QString updater = dir + PathSlash + UpdaterName;
            if (QProcess::startDetached(updater))
            {
                Logger::Info("Updater launched\n");
                return 0;
            }
            else
            {
                Logger::Error("Can't launch updater to update client app\n");
            }
        }
        else
        {
            QFile* newClientFile = new QFile(newClient.fileName());
            newClientFile->remove();
            delete newClientFile;
        }
	}
	// check if initial config exists (config.cfg)
	// without it application is useless
	QFileInfo configInfo(dir + PathSlash + "config.cfg");
	if (! configInfo.exists())
	{
		Logger::Fatal("Initial configuration file (config.cfg) do not exist!\n");
		Logger::Fatal("Terminating!\n");
		return -1;
	}
	
	this_app = new ProxyClientApp(argc, argv);
    return this_app->exec();
}