importScripts('https://www.gstatic.com/firebasejs/8.3.2/firebase-app.js');
importScripts('https://www.gstatic.com/firebasejs/8.3.2/firebase-messaging.js');

firebase.initializeApp({
    apiKey: "AIzaSyDboPXQng1sO_B72QiT4MFCEmnEqj2_Vng",
    authDomain: "sponsr-1596726779286.firebaseapp.com",
    projectId: "sponsr-1596726779286",
    storageBucket: "sponsr-1596726779286.appspot.com",
    messagingSenderId: "368441975986",
    appId: "1:368441975986:web:744eff3006ab556ad415ab"
});

const messaging = firebase.messaging();

messaging.setBackgroundMessageHandler(function(payload) {
    payload.data.data = JSON.parse(JSON.stringify(payload.data));
    return self.registration.showNotification(payload.data.title, payload.data);
});
  
self.addEventListener('notificationclick', function(event) {
    const target = event.notification.data.click_action || '/';
    event.notification.close();
    // This looks to see if the current is already open and focuses if it is
    event.waitUntil(clients.matchAll({
      type: 'window',
      includeUncontrolled: true
    }).then(function(clientList) {
      // clientList always is empty?!
      for (var i = 0; i < clientList.length; i++) {
        var client = clientList[i];
        if (client.url === target && 'focus' in client) {
          return client.focus();
        }
      }
  
      return clients.openWindow(target);
    }));
});