#ifndef HMT_PARSER_H_
#define HMT_PARSER_H_

#include <stdio.h>
#include <stdlib.h>
#include "options.h"
#include "RS_images.h"

/////////////////////////////
///// Define HMT types //////
/////////////////////////////

/**
 * @brief Material struct inside HMT file type
 *
 * Actual RE material struct:\n
 *  4B material entry count MC\n
 *	4B offset after material entries / offset to textures\n
 *	MC * material entry (36B)\n
 *	[\n
 *	  2B int material/texture type:\n
 *		  1 - material with texture\n
 *		  2 - material without texture\n
 *	  2B int texture index\n
 *	  4B float (scale factor?)\n
 *	  4B float (always 1.0)\n
 *	  4B int zero\n
 *	  4B int 0x0A\n
 *	  16B name\n
 *	]\n
 *
 *	@image html hmt_materialDef.png
 */
typedef struct HMTMaterial {
	short type_;				/**< Material type:\n	1 = Material with texture\n	2 = Material without texture */
	short texture_index;
	float unknow1,unknow2;
	int zero;
	int hex_a;
	char name[16];
}HMT_MATERIAL;

/**
 * @brief Texture struct inside HMT file type
 *
 * Actual RE texture struct:\n
 *  4B int texcount Tc\n
 *	TC * texture entry 52B\n
 *	[\n
 *	  4B int pixel offset\n
 *	  28B zero\n
 *	  4B int palette offset, 0 = no palette\n
 *	  4B int texname offset\n
 *	  2B int width\n
 *	  2B int height\n
 *	  8B texture format [\n
 *	 	1B int : always 1?\n
 *		1B int : bits per sample?\n
 *		1B int : subtype:\n
 *		   -0 - palette 16x3B RGB, 4bit per pixel\n
 *		   -1 - 256x3B palette RGB, 8bit per pixel\n
 *		   -3 - RGBA 32bpp\n
 *		   -4 - greyscale, 4bpp\n
 *		   -5 - grayscale, 8bpp\n
 *		1B int ? 0, 0x40, 0x80\n
 *		4B RGBA transparent color?\n
 *	  ]\n
 *	]\n
 *
 *	@image html hmt_textureDef.png
 */
typedef struct HMTTexture {
	int data_offset;
	int palette_offset;
	int textureName_offset;
	unsigned long width, height;
	char name[16];
	RS_IMAGE image;
}HMT_TEXTURE;

/**
 * @brief Instance of HMTFile in memory
 * This structure contain all parsed data for a single HMT file.
 */
typedef struct HMTFile {
	int material_count;				/**< Number of materials registered inside HMTFile instance. */
	int texture_offset;				/**< Address from which texture data begins. */
	int texture_count;				/**< Number of textures registered inside HMTFile instance. */
	HMT_MATERIAL *materials_list;	/**< Starting pointer of the materials list. Managed like an array and declared as a pointer */
	HMT_TEXTURE *textures_list;		/**< Starting pointer of the textures list. Managed like an array and declared as a pointer*/
}HMT_FILE;


/////////////////////////////
///// Declare functions /////
/////////////////////////////
HMT_FILE *parseHMTFile(FILE *hmt_src);
int readMaterial(HMT_MATERIAL *mat, FILE *hmt_src);
int readTexture(HMT_TEXTURE *tex, FILE *hmt_src);
HMT_MATERIAL *getMaterialFromIndex(int i);
HMT_MATERIAL *getMaterialFromName(char *matName);
HMT_TEXTURE *getTextureFromIndex(int i);
HMT_TEXTURE *getTextureFromMaterial(HMT_MATERIAL *mat);
int getPaletteFromFile(RS_IMAGE *img, FILE *f);
int getSamplesFromFile(RS_IMAGE *img, FILE *f);
void purgeHMTFromMemory(HMT_FILE *_f);

#endif