#include "stdafx.h"
#include "scumm.h"
#include "gameDetecter.h"


#define USAGE_STRING    "ScummVM - Scumm Interpreter\n" \
                                                "Syntax:\n" \
                                                "\tscummvm [-v] [-d] [-n] [-b<num>] [-t<num>] [-s<num>] [-p<path>] [-m<num>] [-f] game\n" \
                                                "Flags:\n" \
                                                "\tv       - show version info and exit\n" \
                                                "\td       - enable debug output\n" \
                                                "\tn       - no subtitles for speech\n" \
                                                "\tb<num>  - start in room <num>\n" \
                                                "\tt<num>  - set music tempo. Suggested: 1F0000\n" \
                                                "\ts<num>  - set scale factor to <num> (1, 2, or 3 - 2 by default)\n" \
                                                "\tp<path> - look for game in <path>\n" \
                                                "\tm<num>  - set music volume to <num> (0-100)\n" \
                                                "\te<num>  - set music engine. see readme.txt for details\n" \
                                                "\tr       - emulate roland mt32 instruments\n" \
                                                "\tf       - fullscreen mode\n" \
                                                "\tg       - graphics mode. 1 for 2xSai anti-aliasing\n"

void GameDetecter::parseCommandLine(int argc, char **argv) {
        #if !defined(__APPLE__CW)
        int i;
        char *s;

        // check for arguments
        if (argc < 2)
        {
                printf( USAGE_STRING );
                //exit(1);
        }

        /* Parse the arguments */
        for (i=1; i < argc; i++) {
                s = argv[i];

                if (s && s[0]=='-') {
                        s++;
                        while (*s) {
                                switch(tolower(*s)) {
                                case 'b':
                        if (*(s+1) == '\0')
                                goto ShowHelpAndExit;
                                        _bootParam = atoi(s+1);
                                        goto NextArg;
                                case 'f':
                                        _fullScreen = true;
                                        break;
                                case 'd':
                                        _debugMode = true;
                                        break;
                                case 'n':
                                        _noSubtitles = true;
                                        break;
                                case 's':
                        if (*(s+1) == '\0')
                                goto ShowHelpAndExit;
                                        _scale = atoi(s+1);
                                        if (_scale == 0 || _scale > 3)
                                        {
                                                // bad scale - only 1, 2, 3 work for now
                                                printf("Invalid scale '%s' - valid values are 1, 2, 3\n", s+1);
                                                exit(1);
                                        }
                                        goto NextArg;
                                case 'v':
                                        printf("ScummVM " SCUMMVM_VERSION "\nBuilt on " __DATE__ " " __TIME__ "\n");
                                        #ifdef SCUMMVM_PLATFORM_VERSION
                                        printf("    " SCUMMVM_PLATFORM_VERSION "\n");
                                        #endif
                                        exit(1);
                                case 'p':
                        if (*(s+1) == '\0')
                                goto ShowHelpAndExit;
                                        _gameDataPath = s+1;
                    goto NextArg;
                case 't':
                        if (*(s+1) == '\0')
                                goto ShowHelpAndExit;
                    _gameTempo = atoi(s+1);
                    goto NextArg;
                case 'm': {
                        if (*(s+1) == '\0')
                                goto ShowHelpAndExit;
                                        SoundEngine *se = (SoundEngine*)_soundEngine;

                                        if (se)
                                                se->set_music_volume(atoi(s+1));
                    goto NextArg;
                                }
                case 'r': {
                                        SoundEngine *se = (SoundEngine*)_soundEngine;

                                        if (se)
                                                se->_mt32emulate = true;
                                        break;
                                }
                                case 'e':
                                        if (*(s+1) == '\0')
                                                goto ShowHelpAndExit;
                                        _midi_driver = atoi(s+1);
                                        goto NextArg;
                                case 'g':
                        if (*(s+1) == '\0')
                                goto ShowHelpAndExit;
                                        _videoMode = atoi(s+1);
                                        goto NextArg;

                                default:
ShowHelpAndExit:;
                                        printf( USAGE_STRING );
                                        exit(1);
                                }
                                s++;
                        }
NextArg:;
                } else {
                        if (_exe_name) goto ShowHelpAndExit;
                        _exe_name = s;
                }
        }

        #else
        _midi_driver = 4;
        _exe_name = *argv;
        _gameDataPath = (char*)malloc(strlen(_exe_name) + 3);
        sprintf(_gameDataPath, ":%s:", _exe_name);
        #endif

}

struct VersionSettings {
        const char *filename;
        const char *gamename;
        byte id,major,middle,minor;
        uint32 features;
};

/*
        This is a list of all known SCUMM games. Commented games are not
        supported at this time */

static const VersionSettings version_settings[] = {
        /* Scumm Version 1 */
//      {"maniac",      "Maniac Mansion (C64)",                         GID_MANIAC64, 1, 0, 0,},
//      {"zak",         "Zak McKracken and the Alien Mindbenders (C64)", GID_ZAK64, 1, 0, 0,},

        /* Scumm Version 2 */
//      {"maniac",      "Maniac Mansion", GID_MANIAC, 2, 0, 0,},
//      {"zak",         "Zak McKracken and the Alien Mindbenders",      GID_ZAK,     2, 0, 0,},
//      {"indy3",       "Indiana Jones and the Last Crusade",           GID_INDY3,   2, 0, 0,},

        /* Scumm Version 3 */
        {"indy3",       "Indiana Jones and the Last Crusade (256)",     GID_INDY3_256,  3, 0, 22, GF_SMALL_HEADER|GF_USE_KEY|GF_SMALL_NAMES|GF_OLD256|GF_NO_SCALLING},
        {"zak256",      "Zak McKracken and the Alien Mindbenders (256)",GID_ZAK256,     3, 0, 0,  GF_SMALL_HEADER|GF_USE_KEY|GF_SMALL_NAMES|GF_OLD256|GF_AUDIOTRACKS|GF_NO_SCALLING},
        {"loom",        "Loom",                                         GID_LOOM,       3, 5, 40, GF_SMALL_HEADER|GF_USE_KEY|GF_SMALL_NAMES|GF_OLD_BUNDLE|GF_16COLOR|GF_NO_SCALLING},

        /* Scumm Version 4 */
        {"monkeyEGA",   "Monkey Island 1 (EGA)",                        GID_MONKEY_EGA, 4, 0, 67, GF_SMALL_HEADER|GF_USE_KEY|GF_16COLOR}, // EGA version

        /* Scumm version 5 */
        {"loomcd",      "Loom (256 color CD version)",                  GID_LOOM256,    5, 1, 42, GF_SMALL_HEADER|GF_USE_KEY|GF_AUDIOTRACKS},
        {"monkey",      "Monkey Island 1",                              GID_MONKEY,     5, 2, 2,  GF_USE_KEY|GF_AUDIOTRACKS},
                {"monkey1",     "Monkey Island 1 (alt)",                              GID_MONKEY,     5, 2, 2,  GF_USE_KEY|GF_AUDIOTRACKS},
        {"monkey2",     "Monkey Island 2: LeChuck's revenge",           GID_MONKEY2,    5, 2, 2,  GF_USE_KEY},
        {"atlantis",    "Indiana Jones 4 and the Fate of Atlantis",     GID_INDY4,      5, 5, 0,  GF_USE_KEY},
        {"playfate",    "Indiana Jones 4 and the Fate of Atlantis (Demo)", GID_INDY4,   5, 5, 0,  GF_USE_KEY},

        /* Scumm Version 6 */
        {"tentacle",    "Day Of The Tentacle",                          GID_TENTACLE, 6, 4, 2, GF_NEW_OPCODES|GF_AFTER_V6|GF_USE_KEY},
        {"dottdemo",    "Day Of The Tentacle (Demo)",                   GID_TENTACLE, 6, 3, 2, GF_NEW_OPCODES|GF_AFTER_V6|GF_USE_KEY},
        {"samnmax",     "Sam & Max",                                    GID_SAMNMAX,  6, 4, 2, GF_NEW_OPCODES|GF_AFTER_V6|GF_USE_KEY|GF_DRAWOBJ_OTHER_ORDER},
        {"snmdemo",     "Sam & Max (Demo)",                             GID_SAMNMAX,  6, 3, 0, GF_NEW_OPCODES|GF_AFTER_V6|GF_USE_KEY},

        /* Scumm Version 7 */
        {"ft",          "Full Throttle",                                GID_FT,       7, 3, 0, GF_NEW_OPCODES|GF_AFTER_V6|GF_AFTER_V7},
            {"dig",                     "The Dig",                                                                              GID_DIG,      7, 5, 0, GF_NEW_OPCODES|GF_AFTER_V6|GF_AFTER_V7},

        /* Scumm Version 8 */
//      {"curse",       "The Curse of Monkey Island",                   GID_CMI,      8, 1, 0,},
        {NULL,NULL}
};

bool GameDetecter::detectGame() {
        const VersionSettings *gnl = version_settings;

        _gameId = 0;
        _gameText = NULL;
        do {
                if (!scumm_stricmp(_exe_name, gnl->filename)) {
                        _gameId = gnl->id;
//                      _majorScummVersion = gnl->major;
//                      _middleScummVersion = gnl->middle;
//                      _minorScummVersion = gnl->minor;
                        _features = gnl->features;
                        _gameText = gnl->gamename;
                        debug(1, "Detected game '%s', version %d.%d.%d",
                                gnl->gamename, gnl->major, gnl->middle, gnl->minor);
                        return true;
                }
        } while ((++gnl)->filename);

        debug(1, "Failed game detection");

        return true;
}

char *GameDetecter::getGameName() {
        if (_gameText==NULL) {
                char buf[256];
                sprintf(buf, "Unknown game: \"%s\"", _exe_name);
                return strdup(buf);
        }
        return strdup(_gameText);
}

int GameDetecter::detectMain(int argc, char **argv)
{
        _debugMode = 0;  // off by default...
	
        _noSubtitles = 0;  // use by default - should this depend on soundtrack?        
	_scale = 2;  // double size by default

        _gameDataPath = NULL;
        _gameTempo = 0;
        _videoMode = 0;
        _soundCardType = 3;

        #ifdef WIN32
                _midi_driver = MIDI_WINDOWS;
        #else
                _midi_driver = MIDI_NULL;
        #endif
		
	parseCommandLine(argc, argv);

	if (_exe_name==NULL) {
		//launcherLoop();
		//setWindowName(this);
		warning("No game was specified...");
		return(-1);
	}

	
        if (!detectGame()) {
            warning("Game detection failed. Using default settings");
            _features = GF_DEFAULT;
        } else {
          _gameText = "Please choose a game";
        }

        if (!_gameDataPath) {
                warning("No path was provided. Assuming that data file are in the current directory");
                _gameDataPath = (char *)malloc(sizeof(char) * 2);
                strcpy(_gameDataPath, "");
        }

	return(0);
}