/**
 * Copyright 2020 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *     http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
export function initEmscriptenModule<T extends EmscriptenWasm.Module>(
  moduleFactory: EmscriptenWasm.ModuleFactory<T>,
  wasmUrl: string,
  workerUrl?: string,
): Promise<T> {
  return moduleFactory({
    // Just to be safe, don't automatically invoke any wasm functions
    noInitialRun: true,
    locateFile: (url: string) => {
      if (url.endsWith('.wasm')) return wasmUrl;
      if (url.endsWith('.worker.js')) return workerUrl!;
      throw Error('Unknown url in locateFile ' + url);
    },
  });
}

export function blobToArrayBuffer(blob: Blob): Promise<ArrayBuffer> {
  return new Response(blob).arrayBuffer();
}
