const CACHE = "field-log-shell-v1";
const SHELL = ["/", "/manifest.webmanifest", "/field-log-icon.svg"];
self.addEventListener("install", (event) => {
  event.waitUntil(caches.open(CACHE).then((cache) => cache.addAll(SHELL)));
  self.skipWaiting();
});
self.addEventListener("activate", (event) => {
  event.waitUntil(
    caches
      .keys()
      .then((keys) =>
        Promise.all(
          keys.filter((key) => key !== CACHE).map((key) => caches.delete(key)),
        ),
      ),
  );
  self.clients.claim();
});
self.addEventListener("fetch", (event) => {
  const request = event.request;
  if (
    request.method !== "GET" ||
    new URL(request.url).pathname.startsWith("/api/")
  )
    return;
  event.respondWith(
    fetch(request)
      .then((response) => {
        if (response.ok)
          caches
            .open(CACHE)
            .then((cache) => cache.put(request, response.clone()));
        return response;
      })
      .catch(() =>
        caches.match(request).then((cached) => cached || caches.match("/")),
      ),
  );
});