Make an automated outbound IVR call using Twilio in Node.js

automated-outbound-ivr-twilio.js

const express = require('express')
const twilio = require('twilio')
const VoiceResponse = require('twilio').twiml.VoiceResponse;

const accountSid = 'AC3306*************************2f89';
const authToken = '3a8a*********************b0697';
const client = require('twilio')(accountSid, authToken);

const app = express()
const port = 1337

app.use(express.json())
app.use(express.urlencoded({ extended: false }));

app.get('/', (req, res) => {
    res.send('Hello World!')
})

app.post('/makeCall', async (req, res) => {
    let body = req.body
    console.log("🚀 ~ app.post ~ body", body)

    let call = await client.calls
        .create({
            url: '<your-http-base-url-here>/callAnswered',
            to: '+9190*****246',
            from: '+125*****667'
        })
    console.log(call.sid)
    console.log(call.responseText)

    res.status(200).send(call)
})

app.post('/callAnswered', (req, res) => {
    console.log("🚀 ~ app.post ~ req", req.body)
    // Use the Twilio Node.js SDK to build an XML response
    const twiml = new VoiceResponse();

    const gather = twiml.gather({
        action: '/gatherUserInput',
        method: 'POST',
        input: 'dtmf',
        numDigits: 1
    });
    gather.say('If you are satisfied with our service, press 1. Otherwise, press 2.');

    // If the user doesn't enter input, loop
    twiml.say('You did not enter any input. Please try again.')
    twiml.redirect('/callAnswered');

    // Render the response as XML in reply to the webhook request
    res.header("Content-Type", "text/xml")
    res.status(200).send(twiml.toString())
});

// Create a route that will handle <Gather> input
app.post('/gatherUserInput', (req, res) => {
    // Use the Twilio Node.js SDK to build an XML response
    const twiml = new VoiceResponse();

    // If the user entered digits, process their request
    if (req.body.Digits) {
        switch (req.body.Digits) {
            case '1':
                twiml.say('Thank You for your feedback.');
                break;
            case '2':
                twiml.say('Thank You for your feedback. We will look forward to improve our services.');
                break;
            default:
                twiml.say("Sorry, I don't understand that choice.");
                twiml.pause('2')
                twiml.redirect('/callAnswered');
                break;
        }
    } else {
        // If no input was sent, redirect to the /callAnswered route
        twiml.redirect('/callAnswered');
    }

    // Render the response as XML in reply to the webhook request
    res.header("Content-Type", "text/xml")
    res.status(200).send(twiml.toString())
});

app.get('*', function (req, res) {
    res.status(404).send(JSON.stringify({ error: "Route not found" }));
});

app.listen(port, () => {
    console.log(`Example app listening at http://localhost:${port}`)
})