const START_URL = './index.php';

self.addEventListener('install', (event) => {
  event.waitUntil(self.skipWaiting());
});

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

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

self.addEventListener('notificationclick', (event) => {
  event.notification.close();
  event.waitUntil(
    clients.matchAll({ type: 'window', includeUncontrolled: true }).then((list) => {
      for (const client of list) {
        if ('focus' in client) {
          return client.focus();
        }
      }
      if (clients.openWindow) {
        return clients.openWindow(START_URL);
      }
      return undefined;
    })
  );
});

self.addEventListener('message', (event) => {
  const data = event.data;
  if (!data || data.type !== 'notify') {
    return;
  }

  event.waitUntil(
    self.registration.showNotification(data.title || 'Panel kelnera', {
      body: data.body || '',
      tag: data.tag || 'waiter-alert',
      renotify: true,
      requireInteraction: true,
    })
  );
});