'use strict';

self.addEventListener('push', (event) => {
  let payload = {
    title: 'Dota lobby update',
    body: 'The monitored lobby changed.',
    url: '/admin',
    tag: 'doka-lobby',
  };

  try {
    if (event.data) payload = { ...payload, ...event.data.json() };
  } catch {
    if (event.data) payload.body = event.data.text();
  }

  event.waitUntil(self.registration.showNotification(payload.title, {
    body: payload.body,
    tag: payload.tag,
    data: { url: payload.url || '/admin' },
    requireInteraction: true,
  }));
});

self.addEventListener('notificationclick', (event) => {
  event.notification.close();
  const target = new URL(event.notification.data?.url || '/admin', self.location.origin).href;
  event.waitUntil((async () => {
    const windows = await self.clients.matchAll({ type: 'window', includeUncontrolled: true });
    const existing = windows.find((client) => client.url.startsWith(self.location.origin));
    if (existing) {
      await existing.navigate(target);
      return existing.focus();
    }
    return self.clients.openWindow(target);
  })());
});