self.addEventListener('push', (event) => {
    const notification = event.data.json();

    event.waitUntil(
        self.registration.showNotification(
            notification.title, {
            body: notification.body,
            icon: 'assets/images/dark-logo.png',
            data: {
                url: notification.url
            }
        })
    );
})

self.addEventListener('notificationclick', (event) => {
    event.waitUntil(
        clients.openWindow(event.notification.data.url)
    );
})