sw.js

// sw.js

const CACHE_NAME = 'my-cache-v1';
const urlsToCache = [
  '/',
  '/index.html',
  '/manifest.json',
  '/favicon.ico',
  '/icon-192.png',
  '/icon-512.png',
  '/broken-icon.png',
  '/offline.html', 
];

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

self.addEventListener('fetch', (event) => {
  console.log('Fetch event:', event.request.url);
  event.respondWith(
    caches.match(event.request)
      .then(response => {
        if (response) {
          console.log('Found in cache:', event.request.url);
          return response;
        }

        return fetch(event.request)
          .catch(() => {
            console.error('Error fetching:', event.request.url);
            return caches.match('/offline.html');
          });
      })
  );
});

self.addEventListener('activate', (event) => {
  const cacheWhitelist = [CACHE_NAME];
  event.waitUntil(
    caches.keys().then(cacheNames => {
      return Promise.all(
        cacheNames.map(cacheName => {
          if (cacheWhitelist.indexOf(cacheName) === -1) {
            return caches.delete(cacheName);
          }
        })
      );
    })
  );
});