/**
 * Copyright (c) 2025 Dominic Masters
 * 
 * This software is released under the MIT License.
 * https://opensource.org/licenses/MIT
 */

#pragma once
#include "error/error.h"
#include "assettype.h"

#if PSP
  #define ASSET_PBP_READ_PBP_FROM_HOST 0
  #define ASSET_PBP_SIGNATURE_SIZE 4
  #define ASSET_PBP_SIGNATURE "\0PBP"

  typedef struct {
    char_t signature[ASSET_PBP_SIGNATURE_SIZE];
    uint32_t version;
    uint32_t sfoOffset;
    uint32_t icon0Offset;
    uint32_t icon1Offset;
    uint32_t pic0Offset;
    uint32_t pic1Offset;
    uint32_t snd0Offset;
    uint32_t pspOffset;
    uint32_t psarOffset;
  } assetpbp_t;

#elif DOLPHIN
  #include <fat.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <dirent.h>
  #include <sys/types.h>
  #include <sys/stat.h>
  #include <unistd.h>

  static const char_t *ASSET_DOLPHIN_PATHS[] = {
    "/",
    "/Dusk",
    "/dusk",
    "/DUSK",
    "/apps",
    "/apps/Dusk",
    "/apps/dusk",
    "/apps/DUSK",
    ".",
    "./",
    "./Dusk",
    "./dusk",
    "./DUSK",
    "./apps",
    "./apps/Dusk",
    "./apps/dusk",
    "./apps/DUSK",
    NULL
  };
#endif

#define ASSET_FILE "dusk.dsk"
#define ASSET_HEADER_SIZE 3

static const char_t *ASSET_SEARCH_PATHS[] = {
  "%s/%s",
  "%s",
  "../%s",
  "../../%s",
  "data/%s",
  "../data/%s",
  NULL
};

typedef struct {
  zip_t *zip;
  char_t systemPath[FILENAME_MAX];
  uint8_t assetCount;

  // PSP specific information.
  #if PSP
    FILE *pbpFile;
    assetpbp_t pbpHeader;
  #endif
} asset_t;

static asset_t ASSET;

/**
 * Initializes the asset system.
 */
errorret_t assetInit(void);

/**
 * Checks if an asset file exists.
 * 
 * @param filename The filename of the asset to check.
 * @return true if the asset file exists, false otherwise.
 */
bool_t assetFileExists(const char_t *filename);

/**
 * Loads an asset by its filename, the output type depends on the asset type.
 * 
 * @param filename The filename of the asset to retrieve.
 * @param output The output pointer to store the loaded asset data.
 * @return An error code if the asset could not be loaded.
 */
errorret_t assetLoad(const char_t *filename, void *output);

/**
 * Disposes/cleans up the asset system.
 */
void assetDispose(void);