/* SMOA web scaffold – minimal offline shell (cache static assets only). */
const CACHE = 'smoa-web-v1';
const ASSETS = ['./index.html', './manifest.webmanifest', './sw.js', './offline-queue.js'];

self.addEventListener('install', (event) => {
  event.waitUntil(caches.open(CACHE).then((c) => c.addAll(ASSETS)).then(() => self.skipWaiting()));
});

self.addEventListener('activate', (event) => {
  event.waitUntil(
    caches.keys().then((keys) =>
      Promise.all(keys.filter((k) => k !== CACHE).map((k) => caches.delete(k)))
    ).then(() => self.clients.claim())
  );
});

self.addEventListener('fetch', (event) => {
  const url = new URL(event.request.url);
  if (url.origin === self.location.origin && ASSETS.some((p) => url.pathname.endsWith(p.replace('./', '/')))) {
    event.respondWith(caches.match(event.request).then((r) => r || fetch(event.request)));
    return;
  }
  // API calls: network-first (no offline queue in this scaffold)
  if (event.request.method === 'GET') {
    event.respondWith(fetch(event.request).catch(() => caches.match('./index.html')));
  }
});