// Norda Biznes Partner — Service Worker with Web Push + iOS pending-url

self.addEventListener('install', function() {
    self.skipWaiting();
});

self.addEventListener('activate', function(event) {
    event.waitUntil(self.clients.claim());
});

self.addEventListener('fetch', function(event) {
    event.respondWith(fetch(event.request));
});

self.addEventListener('push', function(event) {
    let payload = {
        title: 'Norda Biznes',
        body: '',
        url: '/',
        icon: '/static/img/favicon-192.png',
        badge: '/static/img/favicon-192.png',
    };
    try {
        if (event.data) payload = Object.assign(payload, event.data.json());
    } catch (e) {
        if (event.data) payload.body = event.data.text();
    }
    const options = {
        body: payload.body,
        icon: payload.icon,
        badge: payload.badge || '/static/img/favicon-192.png',
        data: { url: payload.url },
        tag: payload.tag || undefined,
        renotify: !!payload.tag,
    };
    event.waitUntil(self.registration.showNotification(payload.title, options));
});

self.addEventListener('notificationclick', function(event) {
    event.notification.close();
    const targetUrl = (event.notification.data && event.notification.data.url) || '/';

    event.waitUntil((async function() {
        const clientList = await self.clients.matchAll({ type: 'window', includeUncontrolled: true });
        for (const client of clientList) {
            if (client.url.indexOf(targetUrl) !== -1 && 'focus' in client) {
                return client.focus();
            }
        }
        // iOS PWA fallback — gdy app zamknięta, zapisz pending URL w Redis
        // żeby PWA po starcie mogła pod niego przeskoczyć.
        try {
            await fetch('/push/pending-url', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ url: targetUrl }),
                credentials: 'include',
            });
        } catch (e) { /* ignore */ }
        if (self.clients.openWindow) {
            return self.clients.openWindow(targetUrl);
        }
    })());
});