const CACHE = 'status-poster-v1';
const PRECACHE = ['.', 'index.html', 'manifest.json', 'sw.js', 'icon.svg'];

self.addEventListener('install', e => {
  e.waitUntil(
    caches.open(CACHE)
      .then(c => c.addAll(PRECACHE))
      .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 => {
  // Never intercept API calls — always go to network
  if (e.request.url.includes('api.omg.lol')) return;

  e.respondWith(
    caches.match(e.request)
      .then(cached => cached || fetch(e.request))
  );
});