89 lines
2.7 KiB
JavaScript
89 lines
2.7 KiB
JavaScript
// Must be located at the root.
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importScripts('https://cdn.jsdelivr.net/npm/firebase@6.6.2/firebase-app.js');
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importScripts('https://cdn.jsdelivr.net/npm/firebase@6.6.2/firebase-messaging.js');
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importScripts('firebase-init.js');
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firebase.initializeApp(FIREBASE_INIT);
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// This method shows the notifications.
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firebase.messaging().setBackgroundMessageHandler(function(payload) {
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let title = payload.data.title || "New message";
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let options = {
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body: payload.data.content || "",
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icon: '/img/logo96.png',
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badge: '/img/badge96.png',
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tag: payload.data.topic || undefined,
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data: {
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topic: payload.data.topic
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}
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};
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return self.registration.showNotification(title, options);
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});
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// Update service worker immediately for both the current client
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// and all other active clients.
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self.addEventListener('install', event => {
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self.skipWaiting();
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});
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// This code handles a click on notification: takes
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// the user to the browser tab with the chat or opens a new tab.
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self.addEventListener('notificationclick', event => {
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const notification = event.notification;
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notification.close();
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const urlHash = '#/' + notification.data.topic;
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event.waitUntil(self.clients.matchAll({
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type: 'window',
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includeUncontrolled: true
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}).then((windowClients) => {
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let anyClient = null;
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for (let i = 0; i < windowClients.length; i++) {
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const url = new URL(windowClients[i].url);
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if (url.hash.includes(notification.data.topic)) {
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// Found the Tinode tab with the right topic open.
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return windowClients[i].focus();
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} else {
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// This will be the least recently used tab.
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anyClient = windowClients[i];
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}
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}
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// Found tab with Tinode on a different topic,
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// navigate to the right topic.
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if (anyClient) {
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const url = new URL(anyClient.url);
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url.hash = urlHash;
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return anyClient.focus().then(thisClient => {
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return thisClient.navigate(url);
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});
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}
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// Did not find a Tinode browser tab. Open one.
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const url = new URL(self.location.origin);
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url.hash = urlHash;
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return clients.openWindow(url);
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}));
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});
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// This is needed for 'Add to Home Screen'.
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self.addEventListener('fetch', event => {
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// Workaround for https://bugs.chromium.org/p/chromium/issues/detail?id=823392
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if (event.request.cache == 'only-if-cached' && event.request.mode != 'same-origin') {
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return;
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}
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event.respondWith(
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// Try to find response in cache.
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caches.match(event.request)
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.then((resp) => {
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// If response is found in cache, return it. Otherwise fetch.
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return resp || fetch(event.request);
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})
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.catch((err) => {
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// Something went wrong.
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console.log("Service worker Fetch: ", err);
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})
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);
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});
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