Update static/service-worker.js

static/service-worker.js

@@ -1,20 +1,32 @@
-self.addEventListener('install', function(event) {
-  event.waitUntil(
-    caches.open('taskbot-cache').then(function(cache) {
-      return cache.addAll([
-        '/',
-        '/static/style.css',
-        '/static/script.js',
-        '/static/icon-192.png'
-      ]);
-    })
-  );
-});
-
-self.addEventListener('fetch', function(event) {
-  event.respondWith(
-    caches.match(event.request).then(function(response) {
-      return response || fetch(event.request);
-    })
-  );
-});
+// static/service-worker.js
+const CACHE_NAME = "taskbot-v1-cache-v1";
+const toCache = [
+  "/",                        // cache root HTML
+  "/static/icons/icon-192.png",
+  "/static/icons/icon-512.png",
+  // (any CSS/JS files you serve statically, if you want them offline)
+];
+
+self.addEventListener("install", (event) => {
+  event.waitUntil(
+    caches.open(CACHE_NAME).then((cache) => cache.addAll(toCache))
+  );
+});
+
+self.addEventListener("fetch", (event) => {
+  // Try cache first, then network
+  event.respondWith(
+    caches.match(event.request).then((cachedResp) => {
+      return (
+        cachedResp ||
+        fetch(event.request).then((networkResp) => {
+          // (Optionally) update the cache
+          caches.open(CACHE_NAME).then((cache) => {
+            cache.put(event.request, networkResp.clone());
+          });
+          return networkResp;
+        })
+      );
+    })
+  );
+});