//    This file is part of JustMotion.

//    JustMotion 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.

//    JustMotion 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.

#include "common.h"
#include "camera.h"
#include "services.h"

void showHelp(const QString etcDir)
{
    QTextStream(stdout) << APP_NAME << " " << APP_VERSION << Qt::endl << Qt::endl;
    QTextStream(stdout) << "Usage: " << APP_TARGET << " <argument>" << Qt::endl << Qt::endl;
    QTextStream(stdout) << "-h : display usage information about this application." << Qt::endl;
    QTextStream(stdout) << "-c : path to the config file used to run a single main loop instance." << Qt::endl;
    QTextStream(stdout) << "-i : all valid config files found in " << etcDir << " will be used to create" << Qt::endl;
    QTextStream(stdout) << "     a full instance; full meaning main and vid loop systemd services" << Qt::endl;
    QTextStream(stdout) << "     will be created for each config file." << Qt::endl;
    QTextStream(stdout) << "-d : this is the same as -i except it will not auto start the services." << Qt::endl;
    QTextStream(stdout) << "-v : display the current version." << Qt::endl;
    QTextStream(stdout) << "-u : uninstall the entire app from your system, including all" << Qt::endl;
    QTextStream(stdout) << "     systemd services related to it." << Qt::endl;
    QTextStream(stdout) << "-f : force an action without pausing for user confirmation." << Qt::endl;
    QTextStream(stdout) << "-l : list all attached services to this application along with statuses." << Qt::endl;
    QTextStream(stdout) << "-r : remove all attached services." << Qt::endl;
 }

int main(int argc, char** argv)
{   
    QCoreApplication app(argc, argv);

    QCoreApplication::setApplicationName(APP_NAME);
    QCoreApplication::setApplicationVersion(APP_VERSION);

    auto args   = QCoreApplication::arguments();
    auto etcDir = "/etc/" + QString(APP_TARGET);
    auto ret    = 0;

    if (args.contains("-h"))
    {
        showHelp(etcDir);
    }
    else if (args.contains("-v"))
    {
        QTextStream(stdout) << APP_VERSION << Qt::endl;
    }
    else if (args.contains("-l"))
    {
        servStatByDir(etcDir);
    }
    else if (args.contains("-i") || args.contains("-d"))
    {
        ret = rmServiceByDir(etcDir);
        
        if ((ret == 0) && args.contains("-i"))
        {
           ret = loadServiceByDir(etcDir, true);
        }
        else if (ret == 0)
        {
           ret = loadServiceByDir(etcDir, false);
        }
    }
    else if (args.contains("-c"))
    {
        auto *cam = new Camera(&app);

        ret = cam->start(args);

        if (ret == 0)
        {
            ret = QCoreApplication::exec();
        }
    }
    else if (args.contains("-u"))
    {
        if (args.contains("-f"))
        {
            ret = rmServiceByDir(etcDir);
            
            if (ret == 0) 
            {
                ret = QProcess::execute("/opt/" + QString(APP_TARGET) + "/uninstall.sh", QStringList());
            }    
        }
        else
        {
            char ans;

            std::cout << "This will completely uninstall " << APP_NAME << " from your system. continue y/n? ";
            std::cin >> ans;

            if (ans == 'y' || ans == 'Y')
            {
                ret = rmServiceByDir("/etc/mow");
                
                if (ret == 0)
                {
                    ret = QProcess::execute("/opt/" + QString(APP_TARGET) + "/uninstall.sh", QStringList());
                }
            }
        }
    }
    else if (args.contains("-r"))
    {
        ret = rmServiceByDir(etcDir);
    }
    else
    {
        showHelp(etcDir);
    }

    return ret;
}