const CACHE_NAME = 'weather-app-v1';
const API_CACHE_NAME = 'weather-api-v1';
const urlsToCache = [
  '/',
  '/index.html',
  '/script.js',
  '/output.css',
  '/manifest.json',
  '/icon-192.png',
  '/icon-512.png',
  // Добавьте другие ресурсы
  'https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap',
  'https://unpkg.com/lucide@latest/dist/umd/lucide.js',
  'https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.css',
  'https://cdn.jsdelivr.net/npm/chart.js',
  'https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js'
];

// Установка сервис-воркера
self.addEventListener('install', event => {
  console.log('Service Worker installing.');
  event.waitUntil(
    caches.open(CACHE_NAME)
      .then(cache => {
        console.log('Opened cache');
        return cache.addAll(urlsToCache);
      })
  );
});

// Активация сервис-воркера
self.addEventListener('activate', event => {
  console.log('Service Worker activating.');
  event.waitUntil(
    caches.keys().then(cacheNames => {
      console.log('Available caches:', cacheNames);
      return Promise.all(
        cacheNames.map(cacheName => {
          if (cacheName !== CACHE_NAME && cacheName !== API_CACHE_NAME) {
            console.log('Deleting old cache:', cacheName);
            return caches.delete(cacheName);
          }
        })
      );
    })
  );
  // Немедленно берем контроль над страницами
  return self.clients.claim();
});

// Обработка запросов
self.addEventListener('fetch', event => {
  if (event.request.url.includes('api.weatherapi.com')) {
    // Network-first стратегия для API погоды
    event.respondWith(
      fetch(event.request)
        .then(response => {
          // Клонируем ответ для кэширования
          const responseClone = response.clone();
          caches.open(API_CACHE_NAME)
            .then(cache => {
              cache.put(event.request, responseClone);
              console.log('API response cached:', event.request.url);
            });
          return response;
        })
        .catch(() => {
          console.log('Network failed, trying cache for:', event.request.url);
          return caches.match(event.request);
        })
    );
  } else {
    // Cache-first стратегия для статических файлов
    event.respondWith(
      caches.match(event.request)
        .then(response => {
          if (response) {
            console.log('Serving from cache:', event.request.url);
            return response;
          }
          console.log('Fetching from network:', event.request.url);
          return fetch(event.request);
        })
    );
  }
});