https://dostartu.pl/firebase-messaging-sw.js

1importScripts('https://www.gstatic.com/firebasejs/8.4.3/firebase-app.js')
2importScripts('https://www.gstatic.com/firebasejs/8.4.3/firebase-messaging.js')
3
4firebase.initializeApp({
5  apiKey: "AIzaSyAx9uOU6awdibE6-HQ28sVTgCcdoOSUWI0",
6  authDomain: "dostartu-push-test.firebaseapp.com",
7  projectId: "dostartu-push-test",
8  storageBucket: "dostartu-push-test.appspot.com",
9  messagingSenderId: "388058786669",
10  appId: "1:388058786669:web:1ba58abb39c8a671010864",
11  measurementId: "G-3HCPKVCFCQ"
12});
13
14
15const messaging = firebase.messaging.isSupported() ? firebase.messaging() : null;
16
17messaging.setBackgroundMessageHandler(function(payload) {
18  console.log('Handling background message', payload);
19
20  // Copy data object to get parameters in the click handler
21  payload.data.data = JSON.parse(JSON.stringify(payload.data));
22
23  return self.registration.showNotification(payload.data.title, payload.data);
24});
25
26self.addEventListener('notificationclick', function(event) {
27  const target = event.notification.data.click_action || '/';
28  event.notification.close();
29
30  // This looks to see if the current is already open and focuses if it is
31  event.waitUntil(clients.matchAll({
32    type: 'window',
33    includeUncontrolled: true
34  }).then(function(clientList) {
35    // clientList always is empty?!
36    for (var i = 0; i < clientList.length; i++) {
37      var client = clientList[i];
38      if (client.url === target && 'focus' in client) {
39        return client.focus();
40      }
41    }
42
43    return clients.openWindow(target);
44  }));
45});