// Posimai Log SW — stale-while-revalidate for static, network-first for posts
const CACHE = 'posimai-log-v1';
const STATIC = ['/', '/index.html', '/manifest.json', '/logo.png'];

self.addEventListener('install', e => {
    e.waitUntil(
        caches.open(CACHE).then(async c => {
            await Promise.allSettled(
                STATIC.map(path => c.add(path))
            );
        })
    );
    self.skipWaiting();
});

self.addEventListener('activate', e => {
    e.waitUntil(
        caches.keys().then(keys =>
            Promise.all(keys.filter(k => k !== CACHE).map(k => caches.delete(k)))
        ).then(() => self.clients.claim())
    );
});

self.addEventListener('fetch', e => {
    if (e.request.method !== 'GET') return;
    const url = e.request.url;
    if (!url.startsWith(self.location.origin)) return;

    // posts/ → network-first (content changes on every deploy)
    if (url.includes('/posts/')) {
        e.respondWith(
            fetch(e.request).catch(() => caches.match(e.request))
        );
        return;
    }

    // static assets → stale-while-revalidate
    e.respondWith(
        caches.open(CACHE).then(cache =>
            cache.match(e.request).then(cached => {
                const network = fetch(e.request).then(res => {
                    if (res.ok && res.type === 'basic') cache.put(e.request, res.clone());
                    return res;
                }).catch(() => cached);
                return cached || network;
            })
        )
    );
});