bot.js

// Debug flag
var debug = false;


// Our Twitter library
var Twit = require('twit');

// We need to include our configuration file
var T = new Twit(require('./config.js'));

// This is the URL of a search for the latest tweets on the '#gdgnd' hashtag.
var hastagSearch = { q: "#gdgnd", count: 10, result_type: "recent" };

// A user stream
var stream = T.stream('user');
// When someone follows the user
stream.on('follow', followed);
stream.on('tweet', tweetEvent);

// In this callback we can see the name and screen name
function followed(event) {
    var name = event.source.name;
    var screenName = event.source.screen_name;
    var response = "Thanks for following me, " + name + " @" + screenName + " !"
        // Post that tweet!
    T.post('statuses/update', { status: response }, tweeted);

    console.log('I was followed by: ' + name + ' @' + screenName);
}


// Here a tweet event is triggered!
function tweetEvent(tweet) {
    // If we wanted to write a file out
    // to look more closely at the data
    // var fs = require('fs');
    // var json = JSON.stringify(tweet,null,2);
    // fs.writeFile("tweet.json", json, output);

    // Who is this in reply to?
    var reply_to = tweet.in_reply_to_screen_name;
    // Who sent the tweet?
    var name = tweet.user.screen_name;
    // What is the text?
    var txt = tweet.text;

    // Ok, if this was in reply to me
    console.log(reply_to, name, txt);
    if (reply_to === 'gdgndbot') {

        // Get rid of the @ mention
        txt = txt.replace(/@gdgndbot/g, '');

        // Start a reply back to the sender
        var reply = "Hi @" + name + ' ' + ', Thanks for the mention :)';

        console.log(reply);
        // Post that tweet!
        T.post('statuses/update', { status: reply }, tweeted);
    }
}

// This function finds the latest tweet with the #gdgnd hashtag, and retweets it.
function retweetLatest() {
    T.get('search/tweets', hastagSearch, function(error, data) {

        var tweets = data.statuses;
        for (var i = 0; i < tweets.length; i++) {
            console.log(tweets[i].text);
        }
        // If our search request to the server had no errors...
        if (!error) {
            // ...then we grab the ID of the tweet we want to retweet...
            var retweetId = data.statuses[0].id_str;
            // ...and then we tell Twitter we want to retweet it!
            T.post('statuses/retweet/' + retweetId, {}, tweeted)
        }
        // However, if our original search request had an error, we want to print it out here.
        else {
            if (debug) {
                console.log('There was an error with your hashtag search:', error);
            }
        }
    });
}

// Make sure it worked!
function tweeted(err, reply) {
    if (err !== undefined) {
        console.log(err);
    } else {
        console.log('Tweeted: ' + reply);
    }
};


// Try to retweet something as soon as we run the program...
retweetLatest();
// ...and then every hour after that. Time here is in milliseconds, so
// 1000 ms = 1 second, 1 sec * 60 = 1 min, 1 min * 60 = 1 hour --> 1000 * 60 * 60
setInterval(retweetLatest, 1000 * 60 * 12);