/* offline.js
Make app available offline */

const CACHE_NAME = `RollDice`;

// Use the install event to pre-cache all initial resources.
self.addEventListener('install', event => {
  event.waitUntil((async () => {
	const cache = await caches.open(CACHE_NAME);
	cache.addAll(['/']);
  })());
});

self.addEventListener('fetch', event => {
  event.respondWith((async () => {
	const cache = await caches.open(CACHE_NAME);

	try {
	  // Try to fetch the resource from the network.
	  const fetchResponse = await fetch(event.request);

	  // Save the resource in the cache.
	  cache.put(event.request, fetchResponse.clone());

	  // And return it.
	  return fetchResponse;
	} catch (e) {
	  // Fetching didn't work get the resource from the cache.
	  const cachedResponse = await cache.match(event.request);

	  // And return it.
	  return cachedResponse;
	}
  })());
});