text: /*
  *
  *  Push Notifications codelab
  *  Copyright 2015 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
  *
  *      https://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
  *
  */
  
  /* eslint-env browser, serviceworker, es6 */
  
  'use strict';
  
  self.addEventListener('push', function(event) {
    console.log('[Service Worker] Push Received.');
    console.log(`[Service Worker] Push had this data: "${event.data.text()}"`);
  
    const title = 'Push Codelab';
    const options = {
      body: 'Yay it works.',
      icon: 'images/icon.png',
      badge: 'images/badge.png'
    };
  
    event.waitUntil(self.registration.showNotification(title, options));
  });
  
  self.addEventListener('notificationclick', function(event) {
    console.log('[Service Worker] Notification click Received.');
  
    event.notification.close();
  
    event.waitUntil(
      clients.openWindow('https://www.youtube.com/watch?v=dQw4w9WgXcQ')
    );
  });
  