/*
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   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, 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.


   ### File Specific:
   main-programmer: Patrick Boenzli
   co-programmer: Christian Meyer
   co-programmer: Benjamin Grauer: injected ResourceManager/GraphicsEngine/GUI
*/

#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_ORXONOX
#include "orxonox.h"

#include "globals.h"

#include "gui.h"

#include "parser/ini_parser/ini_parser.h"
#include "util/loading/game_loader.h"

//ENGINES
#include "graphics_engine.h"
#include "sound_engine.h"
#include "util/loading/resource_manager.h"
#include "cd_engine.h"
#include "text_engine.h"
#include "event_handler.h"

#include "util/loading/factory.h"
#include "fast_factory.h"

#include "benchmark.h"

#include "class_list.h"
#include "shell_command_class.h"
#include "shell_command.h"
#include "shell_buffer.h"

#include "util/loading/load_param_description.h"

#include "network_manager.h"

#include "state.h"
#include "lib/parser/preferences/cmd_line_prefs_reader.h"
#include "lib/parser/preferences/ini_file_prefs_reader.h"
#include <string.h>

int verbose = 4;

using namespace std;

SHELL_COMMAND(restart, Orxonox, restart);

/**
 *  create a new Orxonox

   In this funcitons only global values are set. The game will not be started here.
*/
Orxonox::Orxonox ()
{
  this->setClassID(CL_ORXONOX, "Orxonox");
  this->setName("orxonox-main");

  this->iniParser = NULL;

  this->argc = 0;
  this->argv = NULL;

  /* this way, there is no network enabled: */
  this->serverName = NULL;
  this->port = -1;

  this->configFileName = "";
}

/**
 *  remove Orxonox from memory
*/
Orxonox::~Orxonox ()
{
  // game-specific
  delete GameLoader::getInstance();

  // class-less services/factories
  Factory::deleteFactories();
  FastFactory::deleteAll();
  ShellCommandClass::unregisterAllCommands();

  LoadClassDescription::deleteAllDescriptions();

  // engines
  delete CDEngine::getInstance();
  delete SoundEngine::getInstance();
  delete GraphicsEngine::getInstance(); // deleting the Graphics
  delete EventHandler::getInstance();

  // handlers
  delete ResourceManager::getInstance(); // deletes the Resource Manager
  // output-buffer
  delete ShellBuffer::getInstance();

  // orxonox class-stuff
  delete this->iniParser;

  SDL_QuitSubSystem(SDL_INIT_TIMER);
  ClassList::debug();

  PRINT(3)
  (
    "===================================================\n" \
    "Thanks for playing orxonox.\n" \
    "visit: http://www.orxonox.net for new versions.\n" \
    "===================================================\n" \
    ORXONOX_LICENSE_SHORT
  );

  Orxonox::singletonRef = NULL;
}

/**
 *  this is a singleton class to prevent duplicates
 */
Orxonox* Orxonox::singletonRef = NULL;

// DANGEROUS
void Orxonox::restart()
{
  //   int argc = this->argc;
  //   char** argv = this->argv;
  //
  //   Orxonox *orx = Orxonox::getInstance();
  //
  //   delete orx;
  //
  //   orx = Orxonox::getInstance();
  //
  //   if((*orx).init(argc, argv) == -1)
  //   {
  //     PRINTF(1)("! Orxonox initialization failed\n");
  //     return;
  //   }
  //
  //   printf("finished inizialisation\n");
  //   orx->start();
}

/**
 * @brief this finds the config file
 * @returns the new config-fileName
 * Since the config file varies from user to user and since one may want to specify different config files
 * for certain occasions or platforms this function finds the right config file for every occasion and stores
 * it's path and name into configfilename
*/
const std::string& Orxonox::getConfigFile ()
{
  if (ResourceManager::isFile("orxonox.conf"))
  {
    this->configFileName =  "orxonox.conf";
  }
  else
    this->configFileName = ResourceManager::homeDirCheck(DEFAULT_CONFIG_FILE);
  this->iniParser = new IniParser(this->configFileName);
  PRINTF(3)("Parsed Config File: '%s'\n", this->configFileName);
}

/**
 * initialize Orxonox with command line
 */
int Orxonox::init (int argc, char** argv, const char* name, int port)
{
  this->argc = argc;
  this->argv = argv;

  this->serverName = name;
  this->port = port;

  // initialize the Config-file
  this->getConfigFile();

  // windows must not write into stdout.txt and stderr.txt
  /*#ifdef __WIN32__
  freopen( "CON", "w", stdout );
  freopen( "CON", "w", stderr );
  #endif*/

  // initialize everything
  SDL_Init(0);
  if( initResources () == -1)
    return -1;
  if( initVideo() == -1)
    return -1;
  if( initSound() == -1)
    return -1;
  if( initInput() == -1)
    return -1;
  if( initNetworking () == -1)
    return -1;
  if( initMisc () == -1)
    return -1;

  return 0;
}


/**
 * initializes SDL and OpenGL
 */
int Orxonox::initVideo()
{
  PRINTF(3)("> Initializing video\n");

  GraphicsEngine::getInstance();

  GraphicsEngine::getInstance()->initFromIniFile(this->iniParser);

  std::string iconName = ResourceManager::getFullName("pictures/fighter-top-32x32.bmp");
  if (!iconName.empty())
  {
    GraphicsEngine::getInstance()->setWindowName(PACKAGE_NAME " " PACKAGE_VERSION, iconName);
  }
  return 0;
}


/**
 * initializes the sound engine
 */
int Orxonox::initSound()
{
  PRINT(3)("> Initializing sound\n");
  // SDL_InitSubSystem(SDL_INIT_AUDIO);
  SoundEngine::getInstance();

  SoundEngine::getInstance()->loadSettings(this->iniParser);
  SoundEngine::getInstance()->initAudio();
  return 0;
}


/**
 * initializes input functions
 */
int Orxonox::initInput()
{
  PRINT(3)("> Initializing input\n");

  EventHandler::getInstance()->init(this->iniParser);
  EventHandler::getInstance()->subscribe(GraphicsEngine::getInstance(), ES_ALL, EV_VIDEO_RESIZE);

  return 0;
}


/**
 * initializes network system
 */
int Orxonox::initNetworking()
{
  PRINT(3)("> Initializing networking\n");

  if( this->serverName != NULL) // we are a client
  {
    State::setOnline(true);
    NetworkManager::getInstance()->establishConnection(this->serverName, port);
  }
  else if( this->port > 0) {    // we are a server
    State::setOnline(true);
    NetworkManager::getInstance()->createServer(port);
  }
  return 0;
}

#include "util/loading/dynamic_loader.h"

/**
 * initializes and loads resource files
 */
int Orxonox::initResources()
{
  PRINTF(3)("> Initializing resources\n");

  PRINT(3)("initializing ResourceManager\n");

  // init the resource manager
  std::string dataPath;
  if ((dataPath = this->iniParser->getVar(CONFIG_NAME_DATADIR, CONFIG_SECTION_DATA))!= "")
  {
    if (!ResourceManager::getInstance()->setDataDir(dataPath) &&
        !ResourceManager::getInstance()->verifyDataDir(DEFAULT_DATA_DIR_CHECKFILE))
    {
      PRINTF(1)("Data Could not be located in %s\n", dataPath.c_str());
    }
  }

  if (!ResourceManager::getInstance()->verifyDataDir(DEFAULT_DATA_DIR_CHECKFILE))
  {
    PRINTF(1)("The DataDirectory %s could not be verified\n\nh" \
              "!!!  Please Change in File %s Section %s Entry %s to a suitable value !!!\n",
    ResourceManager::getInstance()->getDataDir().c_str(),
    this->configFileName.c_str(),
              CONFIG_SECTION_DATA,
              CONFIG_NAME_DATADIR );
    Gui* gui = new Gui(argc, argv);
    gui->startGui();
    delete gui;
    exit(-1);
  }
  //! @todo this is a hack and should be loadable
  std::string imageDir = ResourceManager::getInstance()->getFullName("maps");
  ResourceManager::getInstance()->addImageDir(imageDir);
  imageDir = ResourceManager::getInstance()->getFullName("pictures");
  ResourceManager::getInstance()->addImageDir(imageDir);

  DynamicLoader::loadDyLib("libtest.so");

  // start the collision detection engine
  CDEngine::getInstance();
  return 0;
}

/**
 * initializes miscelaneous features
 * @return -1 on failure
 */
int Orxonox::initMisc()
{
  ShellBuffer::getInstance();
  return 0;
}

/**
 *  starts the orxonox game or menu
 * here is the central orxonox state manager. There are currently two states
 * - menu
 * - game-play
 * both states manage their states themselfs again.
*/
void Orxonox::start()
{

  this->gameLoader = GameLoader::getInstance();

  if( this->port != -1)
    this->gameLoader->loadNetworkCampaign("worlds/DefaultNetworkCampaign.oxc");
  else
    this->gameLoader->loadCampaign("worlds/DefaultCampaign.oxc");                       /* start orxonox in single player mode */

  //  this->gameLoader->loadDebugCampaign(DEBUG_CAMPAIGN_0);
  this->gameLoader->init();
  this->gameLoader->start();
}


/**
 * handles sprecial events from localinput
 * @param event: an event not handled by the CommandNode
 */
// void Orxonox::graphicsHandler(SDL_Event* event)
// {
//   // Handle special events such as reshape, quit, focus changes
//   switch (event->type)
//     {
//     case SDL_VIDEORESIZE:
//       GraphicsEngine* tmpGEngine = GraphicsEngine::getInstance();
//       tmpGEngine->resolutionChanged(event->resize);
//       break;
//     }
// }






bool showGui = false;



/**********************************
*** ORXONOX MAIN STARTING POINT ***
**********************************/
/**
 *
 *  main function
 *
 * here the journey begins
*/
int main(int argc, char** argv)
{
  CmdLinePrefsReader prefs;
  
  IniFilePrefsReader ini(ResourceManager::homeDirCheck(DEFAULT_CONFIG_FILE));
  
  prefs.parse(argc, argv);
  
  Preferences::getInstance()->debug();

  assert(false);
  
  int i;
  for(i = 1; i < argc; ++i)
  {
    if(     !strcmp( "--help", argv[i])     || !strcmp("-h", argv[i]))
      return showHelp(argc, argv);
    else if(!strcmp( "--gui", argv[i])      || !strcmp("-g", argv[i]))
      showGui = true;
    else if(!strcmp( "--client", argv[i])   || !strcmp("-c", argv[i]))
      return startNetworkOrxonox(argc, argv);
    else if(!strcmp( "--server", argv[i])   || !strcmp("-s", argv[i]))
      return startNetworkOrxonox(argc, argv);
    else if(!strcmp( "--license", argv[i])  || !strcmp("-l", argv[i]))
      return PRINT(0)(ORXONOX_LICENSE_SHORT);
  }

  return startOrxonox(argc, argv, NULL, -1);
  return 0;
}



int showHelp(int argc, char** argv)
{
  PRINT(0)("Orxonox Version %s\n", PACKAGE_VERSION);
  PRINT(0)(" Starts Orxonox - The most furious 3D Action Game :)\n");
  PRINT(0)("\n");
  PRINT(0)("Common options:\n");
  PRINT(0)(" -g, --gui                        starts the orxonox with the configuration GUI \n");
  PRINT(0)(" -h, --help                       shows this help\n");
  PRINT(0)("\n");
  PRINT(0)("Network options:\n");
  PRINT(0)(" -s, --server [port]              starts Orxonox and listens on the [port] for players\n");
  PRINT(0)(" -c, --client [hostname] [port]   starts Orxonox as a Client\n");
  PRINT(0)(" -c, --client [ip address] [port] starts Orxonox as a Client\n");
  PRINT(0)("\n");
  PRINT(0)("Other options:\n");
  PRINT(0)("     --license     prints the licence and exit\n\n");
  PRINT(0)("\n");

  //   {
  //     Gui* gui = new Gui(argc, argv);
  //     gui->printHelp();
  //     delete gui;
  //   }
}




/**
 * starts orxonox in network mode
 * @param argc parameters count given to orxonox
 * @param argv parameters given to orxonox
 */
int startNetworkOrxonox(int argc, char** argv)
{

  int i;
  for(i = 0; i < argc; ++i )
  {
    if( !strcmp( "--client", argv[i]) || !strcmp("-c", argv[i]))
    {
      if( argc <= (i+2))
      {
        printf(" Wrong arguments try following notations:\n");
        printf("   --client [server ip address] [port number]\n");
        printf("   --client [dns name] [port number]\n");
        return 0;
      }

      const char* name = argv[i+1];
      int port = atoi(argv[i+2]);
      printf("Starting Orxonox as client: connecting to %s, on port %i\n", name, port);

      startOrxonox(argc, argv, name, port);
    }
    else if( !strcmp( "--server", argv[i]) || !strcmp("-s", argv[i]))
    {
      if( argc <= (i+1))
      {
        printf(" Wrong arguments try following notations:\n");
        printf("   --server [port number]\n");
        return 0;
      }

      int port = atoi(argv[i+1]);
      printf("Starting Orxonox as server, listening on port %i\n", port);

      startOrxonox(argc, argv, NULL, port);
    }
  }
}



/**
 * starts orxonox
 * @param argc parameters count given to orxonox
 * @param argv parameters given to orxonox
 */
int startOrxonox(int argc, char** argv, const char* name, int port)
{
  // checking for existence of the configuration-files, or if the lock file is still used
  if (showGui || (!ResourceManager::isFile("./orxonox.conf") &&
                  !ResourceManager::isFile(DEFAULT_CONFIG_FILE))
#if DEBUG < 3 // developers do not need to see the GUI, when orxonox fails
      || ResourceManager::isFile(DEFAULT_LOCK_FILE)
#endif
     )
  {
    if (ResourceManager::isFile(DEFAULT_LOCK_FILE))
      ResourceManager::deleteFile(DEFAULT_LOCK_FILE);

    // starting the GUI
    Gui* gui = new Gui(argc, argv);
    gui->startGui();

    if (! gui->startOrxonox)
      return 0;

    delete gui;
  }

  PRINT(0)(">>> Starting Orxonox <<<\n");

  ResourceManager::touchFile(DEFAULT_LOCK_FILE);

  Orxonox *orx = Orxonox::getInstance();

  if( orx->init(argc, argv, name, port) == -1)
  {
    PRINTF(1)("! Orxonox initialization failed\n");
    return -1;
  }

  printf("finished inizialisation\n");
  orx->start();

  delete orx;
  ResourceManager::deleteFile("~/.orxonox/orxonox.lock");
}