const CACHE_NAME = 'rnotes-v1';
const PRECACHE = [
  '/',
  '/manifest.json',
  '/icon-192.png',
  '/icon-512.png',
];

self.addEventListener('install', (event) => {
  event.waitUntil(
    caches.open(CACHE_NAME).then((cache) => cache.addAll(PRECACHE))
  );
  self.skipWaiting();
});

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

self.addEventListener('fetch', (event) => {
  const url = new URL(event.request.url);

  // Always go to network for API calls
  if (url.pathname.startsWith('/api/')) return;

  // Network-first for pages, cache-first for static assets
  event.respondWith(
    fetch(event.request)
      .then((response) => {
        if (response.status === 200) {
          const clone = response.clone();
          caches.open(CACHE_NAME).then((cache) => cache.put(event.request, clone));
        }
        return response;
      })
      .catch(() => caches.match(event.request))
  );
});