// Everclone PWA Service Worker (v1.1.0)
const CACHE_NAME = 'everclone-cache-v2';
const PRECACHE_URLS = [
  '/',
  '/manifest.json',
  '/icon.svg',
  '/icon-192.png',
  '/icon-512.png',
  '/apple-touch-icon.png'
];

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

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

self.addEventListener('fetch', (event) => {
  // CRITICAL: Never intercept POST/PUT/DELETE requests!
  // This ensures Android Web Share Target multipart POSTs stream directly to /api/hooks/note
  if (event.request.method !== 'GET') {
    return;
  }

  const url = new URL(event.request.url);

  // Bypass API endpoints, hooks, and share endpoint to always get fresh data
  if (url.pathname.startsWith('/api/') || url.pathname === '/share') {
    return;
  }

  // Network-first strategy for navigation and static assets with cache fallback
  event.respondWith(
    fetch(event.request)
      .then((networkResponse) => {
        if (
          networkResponse &&
          networkResponse.status === 200 &&
          (url.pathname === '/' || url.pathname.startsWith('/_next/static/'))
        ) {
          const responseClone = networkResponse.clone();
          caches.open(CACHE_NAME).then((cache) => {
            cache.put(event.request, responseClone);
          });
        }
        return networkResponse;
      })
      .catch(() => {
        return caches.match(event.request).then((cachedResponse) => {
          if (cachedResponse) {
            return cachedResponse;
          }
          if (event.request.mode === 'navigate') {
            return caches.match('/');
          }
          return new Response('Network error occurred', { status: 503, statusText: 'Offline' });
        });
      })
  );
});