Initial commit

pwa/sw.js

@@ -0,0 +1,39 @@
+// NotifyPulse PWA Service Worker v3
+const CACHE = 'notifypulse-v3';
+const STATIC = ['/pwa/', '/pwa/index.html'];
+
+self.addEventListener('install', e => {
+  e.waitUntil(
+    caches.open(CACHE).then(c => c.addAll(STATIC).catch(() => {}))
+  );
+  self.skipWaiting();
+});
+
+self.addEventListener('activate', e => {
+  e.waitUntil(
+    caches.keys().then(keys =>
+      Promise.all(keys.filter(k => k !== CACHE).map(k => caches.delete(k)))
+    )
+  );
+  self.clients.claim();
+});
+
+self.addEventListener('fetch', e => {
+  const url = new URL(e.request.url);
+  // Never cache API calls
+  if (url.pathname.startsWith('/api/')) return;
+  e.respondWith(
+    caches.match(e.request).then(r => r || fetch(e.request).then(res => {
+      if (res.ok && e.request.method === 'GET') {
+        const clone = res.clone();
+        caches.open(CACHE).then(c => c.put(e.request, clone));
+      }
+      return res;
+    }).catch(() => caches.match('/pwa/')))
+  );
+});
+
+// Handle messages from main thread
+self.addEventListener('message', e => {
+  if (e.data === 'skipWaiting') self.skipWaiting();
+});