Sending Google Firebase push notification

Sending Google Firebase push notification using #NodeJS

https://prasanthj.com/javascript/send-push-notifcations-to-devices-using-nodejs/
https://medium.com/@jullainc/firebase-push-notifications-to-mobile-devices-using-nodejs-7d514e10dd4
https://medium.com/@selvaganesh93/firebase-cloud-messaging-important-rest-apis-be79260022b5
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var admin = require("firebase-admin");

var serviceAccount = require("path_to_josn_downloaed_from_firebase_console/xxxxxx-club-firebase-adminsdk-xxxxxxxx.json");


admin.initializeApp({
  credential: admin.credential.cert(serviceAccount),
  databaseURL: "https://<DATABASE_NAME>.firebaseio.com"
})

module.exports.admin = admin

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import express from 'express'
import bodyparser from 'body-parser'
import { admin } from './firebase-config'

const app = express()
app.use(bodyparser.json())

const port = 3000
const notification_options = {
    priority: "high",
    timeToLive: 60 * 60 * 24
  };
app.post('/firebase/notification', (req, res)=>{
    const  registrationToken = req.body.registrationToken
    const message = req.body.message
    const options =  notification_options
    
      admin.messaging().sendToDevice(registrationToken, message, options)
      .then( response => {

       res.status(200).send("Notification sent successfully")
       
      })
      .catch( error => {
          console.log(error);
      });

})
app.listen(port, () =>{
console.log("listening to port"+port)
})