/* Copyright 2017 Mozilla Foundation
 *
 * 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.
 */

import { DefaultExternalServices, PDFViewerApplication } from "./app";
import { BasePreferences } from "./preferences";
import { DownloadManager } from "./download_manager";
import { GenericL10n } from "./genericl10n";

if (typeof PDFJSDev !== "undefined" && !PDFJSDev.test("GENERIC")) {
  throw new Error(
    'Module "pdfjs-web/genericcom" shall not be used outside ' +
      "GENERIC build."
  );
}

let GenericCom = {};

class GenericPreferences extends BasePreferences {
  async _writeToStorage(prefObj) {
    localStorage.setItem("pdfjs.preferences", JSON.stringify(prefObj));
  }

  async _readFromStorage(prefObj) {
    return JSON.parse(localStorage.getItem("pdfjs.preferences"));
  }
}

let GenericExternalServices = Object.create(DefaultExternalServices);
GenericExternalServices.createDownloadManager = function(options) {
  return new DownloadManager(options);
};
GenericExternalServices.createPreferences = function() {
  return new GenericPreferences();
};
GenericExternalServices.createL10n = function({ locale = "en-US" }) {
  return new GenericL10n(locale);
};
PDFViewerApplication.externalServices = GenericExternalServices;

export { GenericCom };