const CACHE_NAME = 'salvagedb-v1';
const urlsToCache = [
  '/',
  '/static/styles.css',
  '/static/styles__ltr.css',
  '/static/privacy.css',
  '/static/slogo.png',
  '/static/logo2.png',
  '/static/salvagedblogo.png',
  '/static/favicon.ico',
  '/static/faviconV2.png',
  '/static/curved-arrow.png',
  '/static/vin-position1.gif',
  '/static/manifest.json',
  '/static/icons/icon-72x72.png',
  '/static/icons/icon-96x96.png',
  '/static/icons/icon-128x128.png',
  '/static/icons/icon-144x144.png',
  '/static/icons/icon-152x152.png',
  '/static/icons/icon-192x192.png',
  '/static/icons/icon-384x384.png',
  '/static/icons/icon-512x512.png',
  'https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css',
  'https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js',
  'https://www.google.com/recaptcha/api.js'
];

self.addEventListener('install', event => {
  event.waitUntil(
    caches.open(CACHE_NAME)
      .then(cache => {
        console.log('Opened cache');
        return Promise.all(
          urlsToCache.map(url => 
            fetch(url)
              .then(response => {
                if (!response.ok) {
                  throw new Error(`Failed to fetch ${url}`);
                }
                return cache.put(url, response);
              })
              .catch(error => {
                console.warn(`Failed to cache ${url}:`, error);
              })
          )
        );
      })
      .catch(error => {
        console.error('Cache failed:', error);
      })
  );
});

self.addEventListener('fetch', event => {
  event.respondWith(
    caches.match(event.request)
      .then(response => {
        if (response) {
          return response;
        }
        return fetch(event.request)
          .then(response => {
            if (!response || response.status !== 200 || response.type !== 'basic') {
              return response;
            }
            const responseToCache = response.clone();
            caches.open(CACHE_NAME)
              .then(cache => {
                cache.put(event.request, responseToCache);
              });
            return response;
          })
          .catch(error => {
            console.error('Fetch failed:', error);
            return new Response('Network error happened', {
              status: 408,
              headers: { 'Content-Type': 'text/plain' },
            });
          });
      })
  );
});