service-worker.js

const CACHE_NAME = 'teplostil-cache-v3';
const URLS_TO_CACHE = [
    '/',
    '/index.html',
    '/style.css',
    '/icon.png',
    '/icon-512x512.png',
    '/manifest.json'
];

self.addEventListener('install', (event) => {
    event.waitUntil(
        caches.open(CACHE_NAME).then((cache) => {
            console.log('Opened cache');
            return cache.addAll(URLS_TO_CACHE);
        })
    );
    self.skipWaiting(); // Применяет новый SW сразу
});

self.addEventListener('activate', (event) => {
    event.waitUntil(
        caches.keys().then((cacheNames) => {
            return Promise.all(
                cacheNames.map((cacheName) => {
                    if (cacheName !== CACHE_NAME) {
                        console.log('Deleting old cache:', cacheName);
                        return caches.delete(cacheName);
                    }
                })
            );
        })
    );
    self.clients.claim(); // Обновляет SW без перезапуска
});

self.addEventListener('fetch', (event) => {
    if (event.request.mode === 'navigate') {
        event.respondWith(
            caches.match('/index.html').then((response) => {
                return response || fetch(event.request);
            })
        );
    } else {
        event.respondWith(
            caches.match(event.request).then((response) => {
                return response || fetch(event.request);
            })
        );
    }
});