const CACHE = "sami-cloud-dashboard-v9";
const PRECACHE = [
  "index.html",
  "assets/site.webmanifest",
  "assets/favicon.svg",
  "assets/icon-192.png",
  "assets/icon-512.png",
  "assets/apple-touch-icon.png",
  "assets/weather/clear-day.svg",
  "assets/weather/clear-night.svg",
  "assets/weather/partly-cloudy-day.svg",
  "assets/weather/partly-cloudy-night.svg",
  "assets/weather/cloudy.svg",
  "assets/weather/fog.svg",
  "assets/weather/drizzle.svg",
  "assets/weather/rain.svg",
  "assets/weather/sleet.svg",
  "assets/weather/snow.svg",
  "assets/weather/thunderstorm.svg",
  "assets/weather/wind.svg"
];

self.addEventListener("install", (e) => {
  self.skipWaiting();
  e.waitUntil(caches.open(CACHE).then((c) => c.addAll(PRECACHE)));
});

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 { request } = e;
  const url = new URL(request.url);
  if (url.origin !== location.origin) return;
  // Never cache API or probe responses - always go to network
  if (url.pathname.startsWith("/api/") || url.pathname.startsWith("/probe/")) return;
  e.respondWith(
    fetch(request).then(resp => {
      caches.open(CACHE).then(cache => cache.put(request, resp.clone())).catch(()=>{});
      return resp.clone();
    }).catch(() => caches.match(request))
  );
});