const CACHE_NAME = "adc-bestelapp-v1";
const APP_SHELL = ["/login", "/manifest.webmanifest", "/icon.svg"];

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

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

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

  if (request.method !== "GET" || url.origin !== self.location.origin) {
    return;
  }

  // Never cache authenticated pages or API responses containing private data.
  if (url.pathname === "/" || url.pathname.startsWith("/api/")) {
    return;
  }

  event.respondWith(
    fetch(request).catch(() => caches.match(request)),
  );
});