// Service Worker for Egregore PWA

const CACHE_NAME = 'egregore-v8';
const OFFLINE_URL = '/offline.html';

// Assets to cache
const ASSETS = [
    '/',
    '/static/style.css',
    '/static/app.js',
    '/static/manifest.json',
    '/static/icon.svg'
];

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

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

// Fetch event - network first, fallback to cache
self.addEventListener('fetch', (event) => {
    // Skip non-GET requests
    if (event.request.method !== 'GET') return;

    // Skip API requests (we want those to always go to network)
    if (event.request.url.includes('/api/')) return;

    event.respondWith(
        fetch(event.request)
            .then((response) => {
                // Clone the response and cache it
                const responseClone = response.clone();
                caches.open(CACHE_NAME).then((cache) => {
                    cache.put(event.request, responseClone);
                });
                return response;
            })
            .catch(() => {
                // Fallback to cache
                return caches.match(event.request);
            })
    );
});