Example of Node.js + Express server to parse url parameters and respond with Chatfuel text messages

server.js

const express = require('express');
const app = express();

// Call this from JSON API like this:
//
// https://myserver.com/united+states+of+america/12345
//
app.get('/:country/:productId', (request, response) => {
    // Get the country and productId
    // NOTE: There is no error checking here so it assumes that the parameters are always passed
    const {country, productId} = request.params;
    
    // Respond with Chatfuel / Messenger text messages
    response.json({
        messages: [
            {text: `Country is ${country}`},
            {text: `Product ID is ${productId}`},
        ]
    });
});

app.listen(process.env.PORT || 8080, () => {
    console.log('Your app is listening on port ' + listener.address().port);
});