sw.js

const CACHE_NAME = 'pope-game-cache-v1';
const urlsToCache = [
  '/',
  '/index.html',
  '/styles.css',
  '/game.js',
  '/sw.js',
  '/favicon.ico',
  '/assets/medieval_village.png',
  '/assets/villager.png',
  '/assets/plant_icon.png',
  '/assets/question_mark.png'
];

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

self.addEventListener('fetch', event => {
  event.respondWith(
    caches.match(event.request)
      .then(response => {
        if (response) {
          return response;
        }
        return fetch(event.request)
          .then(networkResponse => {
            if (!networkResponse || networkResponse.status !== 200 || networkResponse.type !== 'basic') {
              return networkResponse;
            }

            const clonedResponse = networkResponse.clone();
            caches.open(CACHE_NAME)
              .then(cache => cache.put(event.request, clonedResponse));
            return networkResponse;
          });
      })
  );
});

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