Firebase NotificationService

NotificationService.js

import messaging from '@react-native-firebase/messaging';

export async function registerForPushNotifications(uid) {
  // Check and request permissions
  const authStatus = await messaging().requestPermission();
  const enabled =
    authStatus === messaging.AuthorizationStatus.AUTHORIZED ||
    authStatus === messaging.AuthorizationStatus.PROVISIONAL;

  if (enabled) {
    // Get the device token
    const token = await messaging().getToken();

    // App is open and in the foreground
    messaging().onMessage(async remoteMessage => {
      console.log('onMessage:', remoteMessage);
      // handle your message
    });

    // App is in the background
    messaging().setBackgroundMessageHandler(async remoteMessage => {
      console.log('setBackgroundMessageHandler', remoteMessage);
      // handle your message
    });
  }
}