const CACHE_NAME = 'vida-proposito-v1';
const STATIC_ASSETS = [
    '/',
    '/index.php',
    '/login.php',
    '/offline.php',
    '/assets/icons/icon-192.png',
    '/assets/icons/icon-512.png'
];

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

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

self.addEventListener('fetch', (event) => {
    // Para peticiones de navegación (páginas HTML/PHP)
    if (event.request.mode === 'navigate') {
        event.respondWith(
            fetch(event.request).catch(() => {
                return caches.match('/offline.php') || caches.match('/index.php');
            })
        );
        return;
    }

    // Para recursos estáticos (CSS, JS, imágenes)
    event.respondWith(
        caches.match(event.request).then((cachedResponse) => {
            if (cachedResponse) {
                return cachedResponse;
            }
            return fetch(event.request);
        })
    );
});