const functions = require('firebase-functions');

const admin = require('firebase-admin');

admin.initializeApp(functions.config().firebase);

var FCM = require('fcm-push');

var serverKey = 'AAAAaeH-j9Y:APA91bF1IbUYsr2L0gPKqIZWf80eA6MDeF5Rz7nlJIwkV82OrwN9he4JD2IEwCAYQYoFyIixygERb-1dt1gYzPOfUfxGNv5Z4FuhhTC-x3719XcP4B8qSDBtOs_Dcl_pd28G0HP9Qk8x';

var fcm = new FCM(serverKey);

exports.sendNotificationToDevice= functions.database.instance('i-Farmo').ref('/User/Device').onUpdate(async event => {

const token='cGfAkYirTE-8llVPxTWkj2:APA91bE_Vjb5PzErJhm8ZeGvTbJxPJZf5gxKvH6Zjf8G_wCG3qJXY2PoWslQWHrAbVS3-HS8v2-79tyFpMpLD8vKSALkov1xqe0PvaUdek9XWuluX41RZKbbpkEDBptrjdGkGntYSD6g';

var payload = {

data: {

Message: 'I came to tell Device is missing'

},

notification: {

title: 'Data Has been changed',

body:'Device in Area 1 is changed',

},

};