/*  RetroArch - A frontend for libretro.
 *  Copyright (C) 2010-2012 - Hans-Kristian Arntzen
 *  Copyright (C) 2011-2012 - Daniel De Matteis
 * 
 *  RetroArch 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 Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  RetroArch 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 RetroArch.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#include <xtl.h>

#include <stddef.h>
#include <stdint.h>
#include <string>

#ifdef _XBOX360
#include <xfilecache.h>
#include "menu.h"
#endif

#include <xbdm.h>
#include "../../input/rarch_xinput2.h"

#ifdef _XBOX
#if defined(_XBOX1)
#include "../../xbox1/xdk_d3d8.h"
#elif defined(_XBOX360)
#include "../xdk_d3d9.h"
#endif
#endif

#include "../../console/retroarch_console.h"
#include "../../conf/config_file.h"
#include "../../conf/config_file_macros.h"
#include "../../file.h"
#include "../../general.h"

#define DEVICE_MEMORY_UNIT0 1
#define DEVICE_MEMORY_UNIT1 2
#define DEVICE_MEMORY_ONBOARD 3
#define DEVICE_CDROM0 4
#define DEVICE_HARDISK0_PART1 5
#define DEVICE_HARDISK0_SYSPART 6
#define DEVICE_USB0 7
#define DEVICE_USB1 8
#define DEVICE_USB2 9
#define DEVICE_TEST 10
#define DEVICE_CACHE 11

typedef struct _STRING {
   unsigned short Length;
   unsigned short MaximumLength;
   char * Buffer;
} STRING;

char DEFAULT_SHADER_FILE[PATH_MAX];
char SYS_CONFIG_FILE[PATH_MAX];

#ifdef _XBOX360
extern "C" int __stdcall ObCreateSymbolicLink( STRING*, STRING*);
#endif

int Mounted[20];

int rarch_main(int argc, char *argv[]);

#undef main

#ifdef _XBOX360
static int DriveMounted(std::string path)
{
   WIN32_FIND_DATA findFileData;
   memset(&findFileData,0,sizeof(WIN32_FIND_DATA));
   std::string searchcmd = path + "\\*.*";
   HANDLE hFind = FindFirstFile(searchcmd.c_str(), &findFileData);

   if (hFind == INVALID_HANDLE_VALUE)
      return 0;

   FindClose(hFind);

   return 1;
}

static int Mount( int Device, char* MountPoint )
{
   char MountConv[260];
   char * SysPath = NULL;

   snprintf( MountConv, sizeof(MountConv), "\\??\\%s", MountPoint );

   switch( Device )
   {
      case DEVICE_MEMORY_UNIT0:
         SysPath = "\\Device\\Mu0";
	 break;
      case DEVICE_MEMORY_UNIT1:
	 SysPath = "\\Device\\Mu1";
	 break;
      case DEVICE_MEMORY_ONBOARD:
	 SysPath = "\\Device\\BuiltInMuSfc";
	 break;
      case DEVICE_CDROM0:
	 SysPath = "\\Device\\Cdrom0";
	 break;
      case DEVICE_HARDISK0_PART1:
	 SysPath = "\\Device\\Harddisk0\\Partition1";
	 break;
      case DEVICE_HARDISK0_SYSPART:
	 SysPath = "\\Device\\Harddisk0\\SystemPartition";
	 break;
      case DEVICE_USB0:
	 SysPath = "\\Device\\Mass0";
	 break;
      case DEVICE_USB1:
	 SysPath = "\\Device\\Mass1";
	 break;
      case DEVICE_USB2:
	 SysPath = "\\Device\\Mass2";
	 break;
      case DEVICE_CACHE:
	 SysPath = "\\Device\\Harddisk0\\Cache0";
	 break;
   }

   STRING sSysPath = { (USHORT)strlen( SysPath ), (USHORT)strlen( SysPath ) + 1, SysPath };
   STRING sMountConv = { (USHORT)strlen( MountConv ), (USHORT)strlen( MountConv ) + 1, MountConv };
   int res = ObCreateSymbolicLink( &sMountConv, &sSysPath );

   if (res != 0)
      return res;

   return DriveMounted(MountPoint);
}
#endif

static void set_default_settings (void)
{
   //g_settings
   g_settings.rewind_enable = false;
   strlcpy(g_settings.video.cg_shader_path, DEFAULT_SHADER_FILE, sizeof(g_settings.video.cg_shader_path));
   g_settings.video.fbo_scale_x = 2.0f;
   g_settings.video.fbo_scale_y = 2.0f;
   g_settings.video.render_to_texture = true;
   strlcpy(g_settings.video.second_pass_shader, DEFAULT_SHADER_FILE, sizeof(g_settings.video.second_pass_shader));
   g_settings.video.second_pass_smooth = true;
   g_settings.video.smooth = true;
   g_settings.video.vsync = true;
   strlcpy(g_settings.cheat_database, "game:", sizeof(g_settings.cheat_database));
   strlcpy(g_settings.system_directory, "game:", sizeof(g_settings.system_directory));
   g_settings.video.aspect_ratio = -1.0f;

   rarch_input_set_controls_default();

   //g_console
   g_console.block_config_read = true;
   g_console.frame_advance_enable = false;
   g_console.emulator_initialized = 0;
   g_console.gamma_correction_enable = true;
   g_console.initialize_rarch_enable = false;
   g_console.fbo_enabled = true;
   g_console.mode_switch = MODE_MENU;
   g_console.screen_orientation = ORIENTATION_NORMAL;
   g_console.throttle_enable = true;
   g_console.aspect_ratio_index = 0;
   strlcpy(g_console.default_rom_startup_dir, "game:", sizeof(g_console.default_rom_startup_dir));
   g_console.viewports.custom_vp.width = 0;
   g_console.viewports.custom_vp.height = 0;
   g_console.viewports.custom_vp.x = 0;
   g_console.viewports.custom_vp.y = 0;
   g_console.color_format = 0;
   g_console.info_msg_enable = true;

   //g_extern
   g_extern.state_slot = 0;
   g_extern.audio_data.mute = 0;
   g_extern.verbose = true;
}

static void get_environment_settings (void)
{
#ifdef _XBOX360
   DWORD ret;

   //for devkits only, we will need to mount all partitions for retail
   //in a different way
   //DmMapDevkitDrive();

   memset(&Mounted, 0, 20);

   Mounted[DEVICE_USB0] = Mount(DEVICE_USB0,"Usb0:");
   Mounted[DEVICE_USB1] = Mount(DEVICE_USB1,"Usb1:");
   Mounted[DEVICE_USB2] = Mount(DEVICE_USB2,"Usb2:");
   Mounted[DEVICE_HARDISK0_PART1] = Mount(DEVICE_HARDISK0_PART1,"Hdd1:");
   Mounted[DEVICE_HARDISK0_SYSPART] = Mount(DEVICE_HARDISK0_SYSPART,"HddX:");
   Mounted[DEVICE_MEMORY_UNIT0] = Mount(DEVICE_MEMORY_UNIT0,"Memunit0:");
   Mounted[DEVICE_MEMORY_UNIT1] = Mount(DEVICE_MEMORY_UNIT1,"Memunit1:");
   Mounted[DEVICE_MEMORY_ONBOARD] = Mount(DEVICE_MEMORY_ONBOARD,"OnBoardMU:"); 
   Mounted[DEVICE_CDROM0] = Mount(DEVICE_CDROM0,"Dvd:"); 
#endif

#ifdef HAVE_HDD_CACHE_PARTITION
   ret = XSetFileCacheSize(0x100000);

   if(ret != TRUE)
   {
      RARCH_ERR("Couldn't change number of bytes reserved for file system cache.\n");
   }

   ret = XFileCacheInit(XFILECACHE_CLEAR_ALL, 0x100000, XFILECACHE_DEFAULT_THREAD, 0, 1);

   if(ret != ERROR_SUCCESS)
   {
      RARCH_ERR("File cache could not be initialized.\n");
   }

   XFlushUtilityDrive();
#endif

#ifdef _XBOX360
   // detect install environment
   unsigned long license_mask;

   if (XContentGetLicenseMask(&license_mask, NULL) != ERROR_SUCCESS)
   {
      printf("RetroArch was launched as a standalone DVD, or using DVD emulation, or from the development area of the HDD.\n");
   }
   else
   {
      XContentQueryVolumeDeviceType("GAME",&g_console.volume_device_type, NULL);

      switch(g_console.volume_device_type)
      {
         case XCONTENTDEVICETYPE_HDD:
            printf("RetroArch was launched from a content package on HDD.\n");
	    break;
	 case XCONTENTDEVICETYPE_MU:
	    printf("RetroArch was launched from a content package on USB or Memory Unit.\n");
	    break;
	 case XCONTENTDEVICETYPE_ODD:
	    printf("RetroArch was launched from a content package on Optical Disc Drive.\n");
	    break;
	 default:
	    printf("RetroArch was launched from a content package on an unknown device type.\n");
	    break;
      }
   }
#endif

   strlcpy(DEFAULT_SHADER_FILE, "game:\\media\\shaders\\stock.cg", sizeof(DEFAULT_SHADER_FILE));
#ifdef _XBOX1
   /* FIXME: Hardcoded */
   strlcpy(SYS_CONFIG_FILE, "D:\\retroarch.cfg", sizeof(SYS_CONFIG_FILE));
#else
   strlcpy(SYS_CONFIG_FILE, "game:\\retroarch.cfg", sizeof(SYS_CONFIG_FILE));
#endif
}

static void configure_libretro(const char *path_prefix, const char * extension)
{
   char full_path[1024];
   snprintf(full_path, sizeof(full_path), "%sCORE%s", path_prefix, extension);

   bool find_libretro_file = rarch_configure_libretro_core(full_path, path_prefix, path_prefix, 
   SYS_CONFIG_FILE, extension);

   set_default_settings();
   rarch_config_load(SYS_CONFIG_FILE, path_prefix, extension, find_libretro_file);
   init_libretro_sym();
}

#ifdef _XBOX1
static void menu_init(void) {}
static void menu_free(void) {}
static void menu_loop(void)
{
   rarch_console_load_game("D:\\ssf2x.gba");
}
#endif

int main(int argc, char *argv[])
{
   get_environment_settings();

   rarch_main_clear_state();
   config_set_defaults();
   
#ifdef _XBOX1
   configure_libretro("D:\\", ".xbe");
#else
   configure_libretro("game:\\", ".xex");
#endif

#if defined(HAVE_D3D8) || defined(HAVE_D3D9)
   video_xdk_d3d.start();
#else
   video_null.start();
#endif
   input_xinput.init();

   rarch_input_set_default_keybind_names_for_emulator();

   menu_init();

begin_loop:
   if(g_console.mode_switch == MODE_EMULATION)
   {
      bool repeat = false;

      input_xinput.poll(NULL);

      rarch_set_auto_viewport(g_extern.frame_cache.width, g_extern.frame_cache.height);

      do{
         repeat = rarch_main_iterate();
      }while(repeat && !g_console.frame_advance_enable);
   }
   else if(g_console.mode_switch == MODE_MENU)
   {
      menu_loop();
      rarch_startup(SYS_CONFIG_FILE);
   }
   else
      goto begin_shutdown;

   goto begin_loop;

begin_shutdown:
   if(path_file_exists(SYS_CONFIG_FILE))
      rarch_config_save(SYS_CONFIG_FILE);

   menu_free();
#if defined(HAVE_D3D8) || defined(HAVE_D3D9)
   video_xdk_d3d.stop();
#else
   video_null.stop();
#endif
   input_xinput.free(NULL);
   rarch_exec();

   return 0;
}