#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "txd.h"

int main(int argc, char *argv[])
{
	int texcount;
	FILE *txd, *tga;
	image img;
	unsigned char colors[256][4];
	unsigned char *indices;
	char name[64];
	char alpha[64];
	char file[1024];

	indices = 0;
	if (argc < 2) {
		fprintf(stderr, "Usage: %s txd\n", argv[0]);
		exit(1);
	}
	if ((txd = fopen(argv[1], "rb+")) == NULL) {
		if ((txd = fopen(argv[1], "wb")) == NULL) {
			fprintf(stderr, "Could not open file: %s\n", argv[1]);
			exit(1);
		}
	}

	fseek(txd, 0, SEEK_END);
	
	rwvers = 0x310;
	texcount = 0;

	if (ftell(txd) == 0) {
		WriteHeader(TEXTUREDICT, 0, rwvers, txd);
		WriteHeader(STRUCT, 4, rwvers, txd);
		fwrite(&texcount, 4, 1, txd);
	} else {
		fseek(txd, 24, 0);
		fread(&texcount, 4, 1, txd);
	}
	
	printf("Texture name: ");
	fgets(name, 64, stdin);
	name[strlen(name)-1] = '\0';
	printf("Alpha name (can be left empty): ");
	fgets(alpha, 64, stdin);
	alpha[strlen(alpha)-1] = '\0';

	printf("TGA file name: ");
	fgets(file, 1024, stdin);
	file[strlen(file)-1] = '\0';

	if ((tga = fopen(file, "rb")) == NULL) {
		fprintf(stderr, "Could not open file: %s\n", file);
		exit(1);
	}

	indices = ReadTga(colors, indices, &img, tga);
	MakeTexture(256, 256, 8, indices, colors, name, alpha, txd);
	texcount++;

	UpdateTexCount(txd, texcount);
	UpdateTexDict(txd);
	
	return 0;
}