https://www.souqfriday.com/firebase-messaging-sw.js?config=

1importScripts('https://www.gstatic.com/firebasejs/10.1.0/firebase-app-compat.js');
2importScripts('https://www.gstatic.com/firebasejs/10.1.0/firebase-messaging-compat.js');
3
4const params = new URL(self.location.href).searchParams;
5const config = JSON.parse(params.get('config') || '{}');
6
7if (config.apiKey) {
8    firebase.initializeApp(config);
9    firebase.messaging();
10}
11
12self.addEventListener('install', () => self.skipWaiting());
13self.addEventListener('activate', e => e.waitUntil(self.clients.claim()));
14
15self.addEventListener('notificationclick', function (event) {
16    event.notification.close();
17    const data = event.notification.data || {};
18    const raw = data.url || (data.FCM_MSG && data.FCM_MSG.data && data.FCM_MSG.data.url) || '/';
19    const targetUrl = new URL(raw, self.location.origin).href;
20
21    event.waitUntil(
22        clients.matchAll({ type: 'window', includeUncontrolled: true }).then(function (list) {
23            for (const c of list) {
24                if (c.url === targetUrl && 'focus' in c) return c.focus();
25            }
26            return clients.openWindow ? clients.openWindow(targetUrl) : null;
27        })
28    );
29});