Initial Commit

frontend/public/sw.js

@@ -0,0 +1,80 @@
+const CACHE_NAME = 'teamchat-v2';
+const STATIC_ASSETS = ['/'];
+
+self.addEventListener('install', (event) => {
+  event.waitUntil(
+    caches.open(CACHE_NAME).then((cache) => cache.addAll(STATIC_ASSETS))
+  );
+  self.skipWaiting();
+});
+
+self.addEventListener('activate', (event) => {
+  event.waitUntil(
+    caches.keys().then((keys) =>
+      Promise.all(keys.filter(k => k !== CACHE_NAME).map(k => caches.delete(k)))
+    )
+  );
+  self.clients.claim();
+});
+
+self.addEventListener('fetch', (event) => {
+  const url = event.request.url;
+  if (url.includes('/api/') || url.includes('/socket.io/') || url.includes('/manifest.json')) {
+    return;
+  }
+  event.respondWith(
+    fetch(event.request).catch(() => caches.match(event.request))
+  );
+});
+
+// Track badge count in SW
+let badgeCount = 0;
+
+self.addEventListener('push', (event) => {
+  if (!event.data) return;
+  const data = event.data.json();
+
+  badgeCount++;
+
+  // Update app badge (supported on Android Chrome and some desktop)
+  if (navigator.setAppBadge) {
+    navigator.setAppBadge(badgeCount).catch(() => {});
+  }
+
+  event.waitUntil(
+    self.registration.showNotification(data.title || 'New Message', {
+      body: data.body || '',
+      icon: '/icons/icon-192.png',
+      badge: '/icons/icon-192.png',
+      data: { url: data.url || '/' },
+      tag: 'teamchat-message',       // replaces previous notification instead of stacking
+      renotify: true,                 // still vibrate/sound even if replacing
+    })
+  );
+});
+
+self.addEventListener('notificationclick', (event) => {
+  event.notification.close();
+  badgeCount = 0;
+  if (navigator.clearAppBadge) navigator.clearAppBadge().catch(() => {});
+  event.waitUntil(
+    clients.matchAll({ type: 'window', includeUncontrolled: true }).then((clientList) => {
+      const url = event.notification.data?.url || '/';
+      for (const client of clientList) {
+        if (client.url.includes(self.location.origin) && 'focus' in client) {
+          client.focus();
+          return;
+        }
+      }
+      return clients.openWindow(url);
+    })
+  );
+});
+
+// Clear badge when user opens the app
+self.addEventListener('message', (event) => {
+  if (event.data?.type === 'CLEAR_BADGE') {
+    badgeCount = 0;
+    if (navigator.clearAppBadge) navigator.clearAppBadge().catch(() => {});
+  }
+});