const CACHE_NAME = 'alchemy-gardens-v1';

const PRECACHE_ASSETS = [
  '/',
  '/collections/all'
];

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

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

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

  if (request.method !== 'GET') return;

  if (url.pathname.startsWith('/checkout') ||
      url.pathname.startsWith('/admin') ||
      url.pathname.startsWith('/cart') ||
      url.pathname.includes('/account')) {
    return;
  }

  if (request.destination === 'image' ||
      request.destination === 'style' ||
      request.destination === 'script' ||
      request.destination === 'font' ||
      url.hostname.includes('cdn.shopify.com')) {
    event.respondWith(
      caches.match(request).then((cached) => {
        if (cached) return cached;
        return fetch(request).then((response) => {
          if (response && response.status === 200) {
            const clone = response.clone();
            caches.open(CACHE_NAME).then((cache) => cache.put(request, clone));
          }
          return response;
        });
      })
    );
    return;
  }

  if (request.destination === 'document' || request.headers.get('accept')?.includes('text/html')) {
    event.respondWith(
      fetch(request)
        .then((response) => {
          if (response && response.status === 200) {
            const clone = response.clone();
            caches.open(CACHE_NAME).then((cache) => cache.put(request, clone));
          }
          return response;
        })
        .catch(() => {
          return caches.match(request).then((cached) => {
            return cached || caches.match('/');
          });
        })
    );
    return;
  }

  event.respondWith(
    caches.match(request).then((cached) => {
      const fetchPromise = fetch(request).then((response) => {
        if (response && response.status === 200) {
          const clone = response.clone();
          caches.open(CACHE_NAME).then((cache) => cache.put(request, clone));
        }
        return response;
      });
      return cached || fetchPromise;
    })
  );
});