09-15-2023, 03:22 PM
Creating a complete Node.js WhatsApp chatbot requires a substantial amount of code and integration with third-party services like Twilio for WhatsApp API integration. Below, I'll provide a simplified example of a Node.js script that listens for incoming messages from a WhatsApp number and responds with a predefined message. Please note that this is a basic example to get you started, and you'll need to set up the necessary environment, dependencies, and configuration for WhatsApp integration.
const express = require('express');
const bodyParser = require('body-parser');
const { MessagingResponse } = require('twilio').twiml;
const app = express();
const port = process.env.PORT || 3000;
app.use(bodyParser.urlencoded({ extended: false }));
app.post('/webhook', (req, res) => {
const twiml = new MessagingResponse();
// Extract the incoming message
const incomingMessage = req.body.Body.toLowerCase();
// Define responses based on incoming messages
let responseMessage = 'Hello! This is a WhatsApp chatbot.';
if (incomingMessage.includes('help')) {
responseMessage = 'This chatbot can provide basic assistance.';
} else if (incomingMessage.includes('bye')) {
responseMessage = 'Goodbye! Have a great day!';
}
// Send the response
twiml.message(responseMessage);
res.writeHead(200, { 'Content-Type': 'text/xml' });
res.end(twiml.toString());
});
app.listen(port, () => {
console.log(`Server is running on port ${port}`);
});