Telegram Bot: testing echo! Node.js

bot.js

var telegram = require('telegram-bot-api');
var util = require('util');

function Bot(token) {

    this.id = null;
    this.name = null;
    this.username = null;

    var self = this;

    var api = this.api = new telegram({
        token: token,
        updates: {
            enabled: true,
            get_interval: 1000
        }
    });

    api.getMe(function(err, data)
    {
        if (err) {
            throw util.format("ERROR initializing bot: %s", err);
        }

        console.log("Initialized bot %s [%d] @%s", data.first_name, data.id, data.username);
    });

    api.on('message', function handleMessage(msg) {
        // echo
        api.sendMessage({
            chat_id: msg.chat.id,
            text: msg.text ? util.format("@%s %s", msg.from.username || '', msg.text) : "meh"
        }, function handleMessageCallback(err, generatedMessage) {
            if (err) {
                console.log("ERROR handling message: %j %j", err, msg);
            }
        })
    });

}

var bot = new Bot('<token>');