/***************************************************************************
 *            miav.cc
 *
 *  Sat Aug 21 17:32:24 2004
 *  Copyright  2004  deva
 *  deva@aasimon.org
 ****************************************************************************/

/*
 *  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 Library 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.
 */

#include <config.h>

#include "server.h"
#include "socket.h"

#ifdef USE_GUI
#include <qapplication.h>
#include "mainwindow.h"
#include <miav.h>
#endif /* USE_GUI */

#include <stdio.h>

enum {
  MODE_GRAB,
  MODE_SERVER
};

/** 
 * This function starts the MIaV gui.
 */
int grab(int argc, char *argv[]) {
#ifdef USE_GUI
  QApplication miav_grab( argc, argv );
  MainWindow mainwindow;
  miav_grab.setMainWidget( &mainwindow );
  return miav_grab.exec();
#else /* USE_GUI */
  printf("Error: MIaV was not compiled with GUI support...\n");
  return 0;
#endif /* USE_GUI */
}

/** 
 * This function starts the MIaV server.
 */
int server(int argc, char *argv[]) {
  pid_t childpid; // variable to store the child's pid

  signal(SIGCLD, SIG_IGN);  // Ved SIGCHILD til IGNORE maa wait/waitpid ikke kaldes 
                            //   (ellers kommer der kernel-brok)
  
  if(argc < 1) {
    printf("Usage: miav server [port]\n");
    printf("[port] Is the port number the server will be listening to.\n");
    return 1;
  }

  printf("Listening on port %d\n",atoi(argv[0]));
  Socket *s = new Socket(atoi(argv[0]));

  while(1) {
    Socket *sc = new Socket(s->slisten());
    if(sc->isConnected()) {
      childpid = fork();
      
      if(childpid == -1) {
        // fork() returns -1 on failure
        perror("fork");
        exit(1); 
      } else if(childpid == 0) {
        // fork() returns 0 to the child process
        delete s; // Close listen socket.
        newConnection(sc);
        delete sc; // Close communication socket.
        exit(0);
      } else {
        // fork() returns new pid to the parent process
      }
    }
  }
  delete s;
  return 0;
}

int main(int argc, char *argv[])
{
  int mode = MODE_GRAB;

  if(argc < 2) {
    printf("Usage: miav [mode] [mode options]\n");
    printf("[mode] can be one of the following: grab or server.\n");
    return 1;
  }

  if(!strcmp(argv[1], "grab")) mode = MODE_GRAB;
  if(!strcmp(argv[1], "server")) mode = MODE_SERVER;

  switch(mode) {
  case MODE_GRAB:
    return grab(argc - 2, &argv[2]);
  case MODE_SERVER:
    return server(argc - 2, &argv[2]);
  }
  return 0;
}