/// <reference lib="webworker" />

declare const self: ServiceWorkerGlobalType;

const CACHE_NAME = "tia-v1";
const STATIC_ASSETS = [
  "/",
  "/manifest.json",
];

self.addEventListener("install", (event) => {
  event.waitUntil(
    caches.open(CACHE_NAME).then((cache) => cache.addAll(STATIC_ASSETS))
  );
  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) => {
  // Skip non-GET requests
  if (event.request.method !== "GET") return;

  // Skip API requests
  if (event.request.url.includes("/api/")) return;

  event.respondWith(
    caches.match(event.request).then((cached) => {
      const networked = fetch(event.request)
        .then((response) => {
          const clone = response.clone();
          caches.open(CACHE_NAME).then((cache) => cache.put(event.request, clone));
          return response;
        })
        .catch(() => cached);

      return cached || networked;
    })
  );
});

export {};