/* ScummVM Tools
 *
 * ScummVM Tools is the legal property of its developers, whose
 * names are too numerous to list here. Please refer to the
 * COPYRIGHT file distributed with this source distribution.
 *
 * 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /* HAVE_CONFIG_H */

#include "sciunpack.h"

#include <sciresource.h>
#include <engine.h>
#include <console.h>

/* #define DRAW_GRAPHICS */

#undef HAVE_OBSTACK_H

#ifdef _MSC_VER
#  include <direct.h>
#  define extern __declspec(dllimport) extern
#endif

#ifdef HAVE_GETOPT_H
#	ifndef WIN32
#		include <getopt.h>
#	else
#		include <win32/getopt.h>
#	endif
#endif /* HAVE_GETOPT_H */

#ifdef DRAW_GRAPHICS
#  ifdef HAVE_LIBPNG
#    include "graphics_png.h"
#  endif /* HAVE_LIBPNG */
#endif /* DRAW_GRAPHICS */

#if defined (_MSC_VER) || defined (__BEOS__) || defined(__amigaos4__)
/* [DJ] fchmod is not in Visual C++ RTL - and probably not needed,anyway */
/* [RS] (see comment above, but read MS-DOS instead of Visual C++ RTL) */
#  define fchmod(file,mode)
#  define CREAT_OPTIONS O_BINARY
#endif

#ifndef CREAT_OPTIONS
#  define CREAT_OPTIONS 0x640
#endif


#define ACT_UNPACK 0
#define ACT_WORDS 1
#define ACT_LIST 2
#define ACT_SCRIPTDUMP 3
#define ACT_VOCABDUMP 4

#define ACT_DEFAULT ACT_UNPACK

static int conversion = 0;
static int list = 0;
static int verbose = 0;
static int with_header = 1;
static int color_mode = 0;
static int action = ACT_DEFAULT;
static guint8 midimask = 0x01;  /* MT-32 */

resource_mgr_t *resmgr;

#ifdef WIN32
#define fchmod(arg1, arg2)
#endif

void
print_resource_filename(FILE* file, int type, int number) {
	if (resmgr->sci_version < SCI_VERSION_1)
		fprintf(file, "%s.%03d", sci_resource_types[type], number);
	else
		fprintf(file, "%d.%s", number, sci_resource_type_suffixes[type]);
}

void
sprint_resource_filename(char* buf, int type, int number) {
	if (resmgr->sci_version < SCI_VERSION_1)
		sprintf(buf, "%s.%03d", sci_resource_types[type], number);
	else
		sprintf(buf, "%d.%s", number, sci_resource_type_suffixes[type]);
}

#ifdef HAVE_GETOPT_LONG
static struct option options[] = {
	{"conversion", no_argument, &conversion, 1},
	{"version", no_argument, 0, 256},
	{"verbose", no_argument, &verbose, 1},
	{"help", no_argument, 0, 'h'},
	{"output-file", required_argument, 0, 'o'},
	{"unpack", no_argument, &action, ACT_UNPACK},
	{"list", no_argument, &action, ACT_LIST},
	{"words", no_argument, &action, ACT_WORDS},
	{"vocab", no_argument, &action, ACT_VOCABDUMP},
	{"objects", no_argument, &action, ACT_SCRIPTDUMP},
	{"with-header", no_argument, &with_header, 1},
	{"without-header", no_argument, &with_header, 0},
	{"sort-alpha", no_argument, &vocab_sort, SORT_METHOD_ALPHA},
	{"sort-group", no_argument, &vocab_sort, SORT_METHOD_GROUP},
#ifdef DRAW_GRAPHICS
	{"palette-dither", no_argument, &color_mode, SCI_COLOR_DITHER},
	{"palette-interpolate", no_argument, &color_mode, SCI_COLOR_INTERPOLATE},
	{"palette-dither256", no_argument, &color_mode, SCI_COLOR_DITHER256},
#endif /* DRAW_GRAPHICS */
	{"gamedir", required_argument, 0, 'd'},
	{"midimask", required_argument, 0, 'M'},
	{0, 0, 0, 0}
};

#endif /* HAVE_GETOPT_LONG */


void unpack_resource(int stype, int snr, char *outfilename);


int main(int argc, char** argv) {
	int retval = 0;
	int i;
	int stype = -1;
	int snr;
	char *resourcenumber_string = 0;
	char *outfilename = 0;
	int optindex = 0;
	int c;
	char *gamedir = sci_getcwd();
	int res_version = SCI_VERSION_AUTODETECT;

#ifdef HAVE_GETOPT_LONG
	while ((c = getopt_long(argc, argv, "WOVUvhLcr:o:d:M:", options, &optindex)) > -1) {
#else /* !HAVE_GETOPT_LONG */
	while ((c = getopt(argc, argv, "WOVUvhLcr:o:d:M:")) > -1) {
#endif /* !HAVE_GETOPT_LONG */

		switch (c) {
		case 256:
			printf("sciunpack ("PACKAGE") "VERSION"\n");
			printf("This program is copyright (C) 1999, 2000, 2001 Christoph Reichenbach,\n"
			       " Lars Skovlund, Magnus Reftel\n"
			       "It comes WITHOUT WARRANTY of any kind.\n"
			       "This is free software, released under the GNU General Public License.\n");
			exit(0);

		case 'h': {
			char *gcc_3_0_can_kiss_my_ass =
			    "Usage: sciunpack [options] [-U] <resource.number>\n"
			    "       sciunpack [options] [-U] <resource> <number>\n"
			    "Unpacks resource data\n"
			    "If * is specified instead of <number>, \n"
			    "all resources of given type will be unpacked.\n\n"
			    "       sciunpack [options] -W\n"
			    "Lists vocabulary words\n\n"
			    "       sciunpack [options] -O\n"
			    "Dumps the complete object hierarchy\n\n"
			    "       sciunpack [options] -V\n"
			    "Prints selector names, opcodes, kernel names, and classes\n\n"
			    "\nAvalable operations:\n"
			    " --unpack      -U       Decompress resource\n"
			    " --list        -L       List all resources\n"
			    " --words       -W       List all vocabulary words\n"
			    " --objects     -O       Print all objects\n"
			    " --vocab       -V       Lists the complete vocabulary\n"
			    "\nAvailable options:\n"
			    "General:\n"
			    " --version              Prints the version number\n"
			    " --verbose     -v       Enables additional output\n"
			    " --help        -h       Displays this help message\n"
			    " --midimask    -M       What 'play mask' to use.  Defaults to MT-32 (0x01)\n"

			    "Listing words:\n"
			    " --sort-alpha		sort in alphabetical order\n"
			    " --sort-group		sort in group order\n"
			    "Unpacking:\n"
			    " --convert     -c       Converts selected resources\n"
			    " --output-file -o       Selects output file\n"
			    " --gamedir     -d       Read game resources from dir\n"
			    " --with-header          Forces the SCI header to be written (default)\n"
			    " --without-header       Prevents the two SCI header bytes from being written\n"
#ifdef DRAW_GRAPHICS
			    " --palette-dither       Forces colors in 16 color games to be dithered\n"
			    " --palette-interpolate  Does color interpolation when drawing picture resources\n"
			    " --palette-dither256    Does dithering in 256 colors\n"
#endif /* DRAW_GRAPHICS */
			    "\nAs a default, 'resource.number' is the output filename.\n"
			    "If conversion is enabled, the following resources will be treated specially:\n"
			    "  sound resources:   Will be converted to MIDI, stored in <number>.midi\n"
			    "  script resources:  Will be dissected and  stored in <number>.script\n"
#ifdef DRAW_GRAPHICS
			    "  picture resources: Will be converted to PNG, stored in <number>.png\n"

#endif /* DRAW_GRAPHICS */
			    ;

			printf(gcc_3_0_can_kiss_my_ass);
			exit(0);
		}

		case 'v':
			verbose = 1;
			break;

		case 'L':
			action = ACT_LIST;
			break;

		case 'W':
			action = ACT_WORDS;
			break;

		case 'V':
			action = ACT_VOCABDUMP;
			break;

		case 'O':
			action = ACT_SCRIPTDUMP;
			break;

		case 'o':
			outfilename = optarg;
			break;

		case 'd':
			if (gamedir) sci_free(gamedir);
			gamedir = sci_strdup(optarg);
			break;

		case 'r':
			res_version = atoi(optarg);
			break;

		case 'c':
			conversion = 1;
			break;

		case 'M':
			midimask = (guint8) strtol(optarg, NULL, 0);
			break;

		case 0: /* getopt_long already did this for us */
		case '?':
			/* getopt_long already printed an error message. */
			break;

		default:
			return -1;
		}
	}

	if (action == ACT_UNPACK) {
		char *resstring = argv[optind];

		if (optind == argc) {
			fprintf(stderr, "Resource identifier required\n");
			return 1;
		}

		if ((resourcenumber_string = (char *) strchr(resstring, '.'))) {
			*resourcenumber_string++ = 0;
		} else if (optind + 1 == argc) {
			fprintf(stderr, "Resource number required\n");
			return 1;
		} else resourcenumber_string = argv[optind+1];

		for (i = 0; i < 18; i++)
			if ((strcmp(sci_resource_types[i], resstring) == 0)) stype = i;
		if (stype == -1) {
			printf("Could not find the resource type '%s'.\n", resstring);
			return 1;
		}
	} /* ACT_UNPACK */

	if (gamedir)
		if (chdir(gamedir)) {
			printf("Error changing to game directory '%s'\n", gamedir);
			exit(1);
		}

	if (!(resmgr = scir_new_resource_manager(gamedir, res_version,
	               0, 1024 * 128))) {
		fprintf(stderr, "Could not find any resources; quitting.\n");
		exit(1);
	}

	if (verbose) printf("Autodetect determined: %s\n",
		                    sci_version_types[resmgr->sci_version]);


	switch (action) {

	case ACT_LIST: {
		int i;

		if (verbose) {
			for (i = 0; i < resmgr->resources_nr; i++) {
				printf("%i: ", i);
				print_resource_filename(stdout,
				                        resmgr->resources[i].type,
				                        resmgr->resources[i].number);
				printf("   has size %i\n", resmgr->resources[i].size);
			}

			fprintf(stderr, " Reading complete. Actual resource count is %i\n",
			        resmgr->resources_nr);
		} else {
			for (i = 0; i < resmgr->resources_nr; i++) {
				print_resource_filename(stdout,
				                        resmgr->resources[i].type,
				                        resmgr->resources[i].number);
				printf("\n");
			}
		}
		break;
	}

	case ACT_UNPACK: {

		if (!strcmp(resourcenumber_string, "*")) {
			int i;
			for (i = 0; i < resmgr->resources_nr; i++)
				if (resmgr->resources[i].type == stype)
					unpack_resource(stype, resmgr->resources[i].number, NULL);
		} else {
			snr = atoi(resourcenumber_string);
			unpack_resource(stype, snr, outfilename);
		}
		break;
	}

	case ACT_WORDS:
		retval = vocab_print();
		break;

	case ACT_SCRIPTDUMP:
		retval = script_dump();
		break;

	case ACT_VOCABDUMP:
		retval = vocab_dump();
		break;

	default:
		fprintf(stderr, "Invalid action %d- internal error!\n", action);
		return 1;
	}


	scir_free_resource_manager(resmgr);
	return retval;
}


void unpack_resource(int stype, int snr, char *outfilename) {
	char fnamebuffer[12]; /* stores default file name */
	resource_t *found;

	if ((stype == sci_sound) && conversion && (resmgr->sci_version > SCI_VERSION_0)) {
		fprintf(stderr, "MIDI conversion is only supported for SCI version 0\n");
		conversion = 0;
	}

	if (!outfilename) {
		outfilename = fnamebuffer;
		if ((stype == sci_sound) && conversion) {
#ifdef HAVE_OBSTACK_H
			map_MIDI_instruments(resmgr);
#endif
			sprintf(outfilename, "%03d.midi", snr);
		}
#ifdef DRAW_GRAPHICS
		else if ((stype == sci_pic) && conversion)
			sprintf(outfilename, "%03d.png", snr);
#endif /* DRAW_GRAPHICS */
		else
			sprint_resource_filename(outfilename, stype, snr);
	}

	if (verbose) {
		printf("seeking ");
		print_resource_filename(stdout, stype, snr);
		printf("...\n");
	}

	if ((found = scir_find_resource(resmgr, stype, snr, 0))) {

#ifdef DRAW_GRAPHICS
		if ((stype == sci_pic) && conversion) {
			int i;
			picture_t pic = alloc_empty_picture(SCI_RESOLUTION_320X200, SCI_COLORDEPTH_8BPP);
			draw_pic0(pic, 1, 0, found->data);
			if ((i = write_pic_png(outfilename, pic->maps[0]))) {
				fprintf(stderr, "Writing the png failed (%d)\n", i);
			} else if (verbose) printf("Done.\n");
			free_picture(pic);
		} else
#endif /* DRAW_GRAPHICS */
			if ((stype == sci_script) && conversion) {
				sprintf(outfilename, "%03d.script", snr);
				open_console_file(outfilename);
				script_dissect(resmgr, snr, NULL, 0);
				close_console_file();
			} else {

				/* Visual C++ doesn't allow to specify O_BINARY with creat() */
#ifdef _MSC_VER
				int outf = open(outfilename, _O_CREAT | _O_BINARY | _O_RDWR);
#else
				int outf = creat(outfilename, CREAT_OPTIONS);
#endif

#ifdef HAVE_OBSTACK_H
				if ((stype == sci_sound) && conversion) {
					int midilength;
					guint8 *outdata = makeMIDI0(found->data, &midilength, midimask);
					if (!outdata) {
						fprintf(stderr, "MIDI conversion failed. Aborting...\n");
						close(outf);
						return;
					}
					if (verbose) printf("MIDI conversion from %d bytes of sound resource"
						                    " to a %d bytes MIDI file.\n",
						                    found->size, midilength);
					write(outf, outdata, midilength);
					free(outdata);
				} else {
#endif /* HAVE_OBSTACK_H */
					guint8 header = 0x80 | found->type;

					if (with_header) {
						write(outf, &header, 1);
						header = 0x00;
						write(outf, &header, 1);
					}

					write(outf,  found->data, found->size);
#ifdef HAVE_OBSTACK_H
				}
#endif /* HAVE_OBSTACK_H */

				fchmod(outf, 0644);
				close(outf);
				fchmod(outf, 0644);

				if (verbose) printf("Done.\n");
			}

	} else printf("Resource not found.\n");
}



