server.js

const app = require('express')()
const bodyParser = require('body-parser')
const logger = require('morgan')

const port = process.env.PORT || 3030

app.use(logger('dev'))
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({extended: true}))

app.get('*', (req, res) => {
  res.send('Welcome to Computer Society of Kimathi USSD Service')
})

app.post('*', (req, res) => {
  let {sessionId, serviceCode, phoneNumber, text} = req.body
  if (text == '') {
    // Return main menu on first request
    let response = `CON Welcome to CSOK
    1. Who We Are
    2. Why Join Us
    3. How To Join 
    4. Our History`
    res.send(response)
  } else if (text == '1') {
    // Who We Are
    let response = `END --Who We Are--   
    We are a student club that aims to empower students by bringing cutting-edge technology, new ideas, and top tech-innovators to campus.`
    res.send(response)
  } else if (text == '2') {
    // Why join us
    let response = `END --Why Join--
    By joining us, you will:
    1. Gain software development skills
    2. Meet like minded people and make friends
    3. Invited to Hackathons and tech events
    4. See new places and and do new things
    5. It's fun!
    `
    res.send(response)
  } else if (text == '3') {
    // Why join us
    let response = `END --Join Us--
    Visit https://csokimathi.club 
    or
    Call/Text/Whatsapp Grace at 0798 634 840
    `
    res.send(response)
  } else if (text == '4') {
    // History 
    let response = `END --History--

    The club was founded in July 2012 by Antony Oroko as Chairman, Oscar Oluoch as Vice and Nelson as Secretary. Their objective was to bring the DeKUT fraternity in learning together. The club organised meetups involving students in peer to peer learning.From then, the club has organised Tech Events, Meetups, Social Activies and has many Awards.
    
    View the whole history at https://csokimathi.club
    `
    res.send(response)
  } else {
    res.status(400).send('Bad request!')
  }
})

app.listen(port, () => {
  console.log(`Server running on port ${port}`)
})