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

#include "asset/asset.h"
#include "assert/assert.h"

errorret_t assetScriptHandler(assetcustom_t custom) {
  assertNotNull(custom.zipFile, "Custom asset zip file cannot be NULL");
  assertNotNull(custom.output, "Custom asset output cannot be NULL");

  assetscript_t *script = (assetscript_t *)custom.output;
  errorChain(assetScriptInit(script, custom.zipFile));

  errorOk();
}

errorret_t assetScriptInit(
  assetscript_t *script,
  zip_file_t *zipFile
) {
  assertNotNull(script, "Script asset cannot be NULL");
  assertNotNull(zipFile, "Zip file cannot be NULL");

  // We now own the zip file handle.
  script->zip = zipFile;

  errorOk();
}

const char_t * assetScriptReader(lua_State* lState, void* data, size_t* size) {
  assetscript_t *script = (assetscript_t *)data;
  zip_int64_t bytesRead = zip_fread(
    script->zip, script->buffer, sizeof(script->buffer)
  );

  if(bytesRead < 0) {
    *size = 0;
    return NULL;
  }

  *size = (size_t)bytesRead;
  return script->buffer;
}

errorret_t assetScriptDispose(assetscript_t *script) {
  assertNotNull(script, "Script asset cannot be NULL");

  if(script->zip != NULL) {
    zip_fclose(script->zip);
    script->zip = NULL;
  }

  errorOk();
}