Implement comprehensive enhancements: push notifications, export functionality, user profiles, community sharing, offline improvements, analytics, accessibility, testing, and documentation

public/firebase-messaging-sw.js

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+// Import Firebase scripts
+importScripts('https://www.gstatic.com/firebasejs/9.22.0/firebase-app-compat.js');
+importScripts('https://www.gstatic.com/firebasejs/9.22.0/firebase-messaging-compat.js');
+
+// Your web app's Firebase configuration
+const firebaseConfig = {
+  apiKey: "AIzaSyAHtvhdtBxNwf0UE3Fp5P0v1vITZKhLMJw",
+  authDomain: "prayer-app-6701f.firebaseapp.com",
+  projectId: "prayer-app-6701f",
+  storageBucket: "prayer-app-6701f.firebasestorage.app",
+  messagingSenderId: "555011794707",
+  appId: "1:555011794707:web:a3d60bdee742578cca1ce6"
+};
+
+// Initialize Firebase
+firebase.initializeApp(firebaseConfig);
+
+const messaging = firebase.messaging();
+
+// Handle background messages
+messaging.onBackgroundMessage((payload) => {
+  console.log('Received background message ', payload);
+
+  const notificationTitle = payload.notification.title;
+  const notificationOptions = {
+    body: payload.notification.body,
+    icon: '/icon-192x192.png' // Update with your app icon
+  };
+
+  self.registration.showNotification(notificationTitle, notificationOptions);
+});