// Next Workspace - Service Worker
// Cache name includes timestamp to force update on deploy
const CACHE_NAME = 'nextwks-v1';
const STATIC_ASSETS = [
  '/',
  '/static/manifest.json',
  '/static/icons/icon-192.svg',
  '/static/icons/icon-512.svg',
];

// Install: cache static assets
self.addEventListener('install', (event) => {
  event.waitUntil(
    caches.open(CACHE_NAME).then((cache) => {
      return cache.addAll(STATIC_ASSETS);
    })
  );
});

// Activate: clean old caches
self.addEventListener('activate', (event) => {
  event.waitUntil(
    caches.keys().then((keys) => {
      return Promise.all(
        keys
          .filter((key) => key !== CACHE_NAME)
          .map((key) => caches.delete(key))
      );
    })
  );
});

// Fetch: serve from cache first, fall back to network
self.addEventListener('fetch', (event) => {
  // Only handle GET requests
  if (event.request.method !== 'GET') return;

  // For navigation requests, always go to network
  if (event.request.mode === 'navigate') {
    event.respondWith(fetch(event.request).catch(() => caches.match('/')));
    return;
  }

  // For static assets, try cache first
  event.respondWith(
    caches.match(event.request).then((cached) => {
      return cached || fetch(event.request).then((response) => {
        // Cache successful responses for static assets
        if (response.status === 200 && event.request.url.includes('/static/')) {
          const clone = response.clone();
          caches.open(CACHE_NAME).then((cache) => cache.put(event.request, clone));
        }
        return response;
      });
    })
  );
});