gistfile1.js

"use strict";
var path = require("path");
var fs = require("fs");
var Twit = require('twit');  

var rateLimiter = {};
var luckyNumber =  Math.round(Math.random()*60);
var re = /\d+/;

var oauth = JSON.parse(fs.readFileSync("./config/twitter_credentials.js", "UTF8"));
var keywords = ['sorteiotwitterbr'];

var client = new Twit(oauth);

var stream = client.stream('statuses/filter', { track: keywords })

stream.on('tweet', function(tweet) {
    var result = tweet.text.match(/\d+/);
    var user = tweet.user.screen_name;
    
    console.log(tweet.user.screen_name + "->" + tweet.text);
    if (!!rateLimiter[user]) {
        rateLimiter[user]++;
        if (rateLimiter[user] >= 10) { 
            console.log("banido");
            return; 
        }
    } else {
        rateLimiter[user] = 1;
    } 

    if (!result || result[0] != luckyNumber) { return; } 
    stream.stop();

    console.log("Ganhou! "+ user + " com o numero " + result[0]);
    client.post('statuses/update', { status: "@" + user + ' Parabens, vc ganhou com o numero '+ luckyNumber, in_reply_to_status_id: tweet.id_str }, function(err, data, response) {
        if (err) throw err;
    });
});

process.on("SIGINT", function(){
    console.log(luckyNumber);
    stream.stop();
    process.exit();
});