// App shell offline, live data always from the network.
const CACHE = 'rig-pocket-v1';
const SHELL = ['./', 'app.js', 'boot.js', 'manifest.webmanifest', 'icon.svg', 'icon-192.png'];

self.addEventListener('install', (e) => e.waitUntil(caches.open(CACHE).then((c) => c.addAll(SHELL)).then(() => self.skipWaiting())));
self.addEventListener('activate', (e) => e.waitUntil(
  caches.keys().then((keys) => Promise.all(keys.filter((k) => k !== CACHE).map((k) => caches.delete(k)))).then(() => self.clients.claim())));

self.addEventListener('fetch', (e) => {
  const url = new URL(e.request.url);
  if (e.request.method !== 'GET' || url.origin !== location.origin || url.pathname.includes('/api/')) return;
  e.respondWith(fetch(e.request).then((r) => {
    if (r.ok) { const copy = r.clone(); caches.open(CACHE).then((c) => c.put(e.request, copy)); }
    return r;
  }).catch(() => caches.match(e.request)));
});