v0.12.14 FCM optimization

frontend/public/sw.gemini.js

@@ -0,0 +1,59 @@
+// ── Unified Push Handler (Optimized for Mobile) ──────────────────────────────
+self.addEventListener('push', (event) => {
+  console.log('[SW] Push event received. Messaging Ready:', !!messaging);
+
+  // event.waitUntil is the "Keep-Alive" signal for mobile OS
+  event.waitUntil(
+    (async () => {
+      try {
+        let payload;
+
+        // 1. Try to parse the data directly from the push event (Fastest/Reliable)
+        if (event.data) {
+          try {
+            payload = event.data.json();
+            console.log('[SW] Raw push data parsed:', JSON.stringify(payload));
+          } catch (e) {
+            console.warn('[SW] Could not parse JSON, using text fallback');
+            payload = { notification: { body: event.data.text() } };
+          }
+        }
+
+        // 2. If the payload is empty, check if Firebase can catch it 
+        // (This happens if your server sends "Notification" instead of "Data" messages)
+        if (!payload && messaging) {
+          // This is a last-resort wait for the SDK
+          payload = await new Promise((resolve) => {
+            const timeout = setTimeout(() => resolve(null), 2000);
+            messaging.onBackgroundMessage((bgPayload) => {
+              clearTimeout(timeout);
+              resolve(bgPayload);
+            });
+          });
+        }
+
+        // 3. Construct and show the notification
+        if (payload) {
+          const n = payload.notification || {};
+          const d = payload.data || {};
+          
+          // Use the specific function you already defined
+          await showRosterChirpNotification({
+            title:   n.title   || d.title   || 'New Message',
+            body:    n.body    || d.body    || '',
+            url:     d.url     || d.link    || '/', // some SDKs use 'link'
+            groupId: d.groupId || '',
+          });
+        } else {
+          // Fallback if we woke up for a "ghost" push with no data
+          await self.registration.showNotification('RosterChirp', {
+            body: 'You have a new update.',
+            tag: 'rosterchirp-fallback'
+          });
+        }
+      } catch (error) {
+        console.error('[SW] Critical Push Error:', error);
+      }
+    })()
+  );
+});