// App-shell cache only; Seafile/API traffic always goes to the network.
const CACHE = 'hub-v6';
const SHELL = ['/icon.svg', '/manifest.webmanifest', '/icons/icon-192.png', '/icons/apple-touch-icon.png'];

self.addEventListener('install', e => {
  e.waitUntil(caches.open(CACHE).then(c => c.addAll(SHELL)));
  self.skipWaiting();
});
self.addEventListener('activate', e => {
  e.waitUntil(caches.keys().then(ks => Promise.all(ks.filter(k => k !== CACHE).map(k => caches.delete(k)))));
  self.clients.claim();
});
self.addEventListener('fetch', e => {
  const u = new URL(e.request.url);
  if (e.request.method !== 'GET' || u.origin !== location.origin || u.pathname.startsWith('/sf/') || u.pathname.startsWith('/plex/') || u.pathname.startsWith('/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)));
});