pwa

listify-client/public/sw.js

@@ -0,0 +1,65 @@
+const CACHE_NAME = 'listify-shell-v1';
+const SHELL_ASSETS = ['/', '/index.html', '/manifest.webmanifest', '/pwa-icon.svg'];
+
+self.addEventListener('install', (event) => {
+  event.waitUntil(
+    caches
+      .open(CACHE_NAME)
+      .then((cache) => cache.addAll(SHELL_ASSETS))
+      .then(() => self.skipWaiting()),
+  );
+});
+
+self.addEventListener('activate', (event) => {
+  event.waitUntil(
+    caches
+      .keys()
+      .then((keys) =>
+        Promise.all(
+          keys
+            .filter((key) => key !== CACHE_NAME)
+            .map((key) => caches.delete(key)),
+        ),
+      )
+      .then(() => self.clients.claim()),
+  );
+});
+
+self.addEventListener('fetch', (event) => {
+  const request = event.request;
+  const url = new URL(request.url);
+
+  if (url.origin !== self.location.origin || url.pathname.startsWith('/api/')) {
+    return;
+  }
+
+  if (request.mode === 'navigate') {
+    event.respondWith(
+      fetch(request)
+        .then((response) => {
+          const responseClone = response.clone();
+          caches.open(CACHE_NAME).then((cache) => cache.put('/index.html', responseClone));
+          return response;
+        })
+        .catch(() => caches.match('/index.html')),
+    );
+    return;
+  }
+
+  event.respondWith(
+    caches.match(request).then((cached) => {
+      if (cached) {
+        return cached;
+      }
+
+      return fetch(request).then((response) => {
+        if (request.method === 'GET' && response.ok) {
+          const responseClone = response.clone();
+          caches.open(CACHE_NAME).then((cache) => cache.put(request, responseClone));
+        }
+
+        return response;
+      });
+    }),
+  );
+});