/*
 ================================================================================
 Name        : Texture-Extractor.c
 Author      : JackCarterSmith
 Version     : 0.1
 License     : GPL-v3.0
 Description : DAT textures extractor to PNG format with enhanced function in C
 ================================================================================
 */

#include "Texture-Extractor.h"


int main(int argc, char *argv[]) {
	// Init buffer vars
	HMT_FILE *hmt_fdatas = NULL;

	// Check if filenames arguments exist
	if (argc < 2) {
		printf("No input file specified!\nCorrect syntax is:\n	HMT-Extractor <texture_file_hmt>\n");
		return EXCEPTION_NONCONTINUABLE;		//TODO: implement own error codes system
	}

	// Do the work
	hmt_fdatas = extractDatasFromHMT(argv[1]);		//TODO: Manage multi inputs files
	if (hmt_fdatas == NULL) return EXIT_FAILURE;
	exportTextures(hmt_fdatas, argv[1]);
	purgeHMTFromMemory(hmt_fdatas);		// Clean up memory (because I'm a good boy)

	return EXIT_SUCCESS;
}

HMT_FILE *extractDatasFromHMT(char *hmt_filename) {
	FILE *_hmtFile = NULL;
	HMT_FILE *hmt_fdatas = NULL;

	_hmtFile = fopen(hmt_filename, "rb");
	if (_hmtFile != NULL) {
		hmt_fdatas = parseHMTFile(_hmtFile);
		if (hmt_fdatas == NULL) printf("[ERR] Failed to parse datas from %s\n", hmt_filename);
	} else {
		printf("[ERR] Input file not found!\n");
	}
	fclose(_hmtFile);

	return hmt_fdatas;
}

int exportTextures(HMT_FILE *hmt_f, char *filename) {
	int i;

	for (i=0; i<hmt_f->texture_count; i++) {
		switch (hmt_f->textures_list[i].image.type_) {
		case 0:
		case 1:
			saveToPNG(&(hmt_f->textures_list[i].image), hmt_f->textures_list[i].name);
			//Write to PNM
			break;
		case 3:
			//Write to TGA
			break;
		case 4:
		case 5:
			saveToPNG(&(hmt_f->textures_list[i].image), hmt_f->textures_list[i].name);
			//Write to PGM
			break;
		default:
			printf("[INFO] Image type %d not currently supported!\n", hmt_f->textures_list[i].image.type_);
		}
	}

	return EXIT_SUCCESS;
}