// **************************************************************************
//
//  (C) Copyright 2009   Swiss SIMTEC AG
//
// **************************************************************************
//
//  $HeadURL$
//  $LastChangedBy$
//  $LastChangedDate$
//  $LastChangedRevision$
//
// **************************************************************************

/*!
*
* \page Tetra-Interface Tetra-Interface
*
* This component is needed to communicate between the Server software and the players in
* the field via Tetra. It's an extra component due to historical reasons only.
*
*/

#include "PrtCnvApplication.hpp"
#include <NGLLogger/INGLLogger.h>
#include <nglapplication/nglcoreapplication.h>
#include <LtsCommandLineParser/LtsCommandLineParser.h>
#include <QNetworkProxy>
#ifndef WIN32
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#endif

// ---------------------------------------------------------------
// Become a daemon
// ---------------------------------------------------------------
static void daemonize()
{
#ifndef WIN32
  pid_t pid, sid;

  /* already a daemon */
  if ( getppid() == 1 )
    return;

  /* Fork off the parent process */
  pid = fork();
  if (pid < 0) {
    exit(EXIT_FAILURE);
  }
  /* If we got a good PID, then we can exit the parent process. */
  if (pid > 0) {
    exit(EXIT_SUCCESS);
  }

  /* At this point we are executing as the child process */

  /* Change the file mode mask */
  umask(0);

  /* Create a new SID for the child process */
  sid = setsid();
  if (sid < 0) {
    exit(EXIT_FAILURE);
  }

  /* Change the current working directory.  This prevents the current
       directory from being locked; hence not being able to remove it. */
  if ((chdir("/")) < 0) {
    exit(EXIT_FAILURE);
  }

  /* Redirect standard files to /dev/null */
  freopen( "/dev/null", "r", stdin);
  freopen( "/dev/null", "w", stdout);
  freopen( "/dev/null", "w", stderr);
#endif
}

class CmdLineParser : public LtsCommandLineParser::LtsCommandLineParser
{
public:
  CmdLineParser()
    : LtsCommandLineParser(ProvideCommandLineParameterOptions(ExerciseId|CustomConfigFile))
  {
    addOption( { QStringList() << QStringLiteral("d") << QStringLiteral("daemonize"),
                 QStringLiteral("Start in background") } );
    addOption( { QStringList() << QStringLiteral("c") << QStringLiteral("cleandb"),
                 QStringLiteral("Start over with clean database") } );
  }

  bool daemonize() const
  {
    return isSet(QStringLiteral("d"));
  }
  bool cleanDb() const
  {
    return isSet(QStringLiteral("c"));
  }
};

int main(int argc, char** argv)
{
  QNetworkProxy::setApplicationProxy(QNetworkProxy());
  NGLCoreApplication app(argc, argv);

  CmdLineParser options;
  if (!options.init())
    return -1;
  app.createLogger("PrtCnv", options.exerciseId());

  if (options.daemonize())
    daemonize();

  PrtCnv::PrtCnvApplication prtCnvApp;
  prtCnvApp.setCleanDb(options.cleanDb());
  prtCnvApp.setExerciseId(options.exerciseId());
  if (options.iniFileSet())
    prtCnvApp.setConfigFile(options.iniFile());

  STARTUP_LOG(app.baseLogger());

  prtCnvApp.startApp();
  int ret = app.exec();
  prtCnvApp.shutdownApp();

  SHUTDOWN_LOG(app.baseLogger());

  return ret;
}