server.js

/*
 Oswego CSA IRC bot
 */

var fs = require("fs");
try {
  var config = JSON.parse(fs.readFileSync("config.json").toString());
} catch (ex) {
  console.log('got an error: %s', ex);
  process.exit(1);
}


// Mailer ================================================================
var nodemailer = require("nodemailer");

// create reusable transport method (opens pool of SMTP connections)
var smtpTransport = nodemailer.createTransport("SMTP", {
  service: config.mailer.service,
  auth: {
    //name: "client server name",
    user: config.mailer.user,
    pass: config.mailer.pass
  },
  maxConnections: 1
});
// END Mailer ============================================================
// setup e-mail data with unicode symbols

function mailOptions(message) {
  return {
    from: config.notify.from,
    // sender address
    to: config.notify.to,
    // list of receivers
    //replyTo: "" // replyTo address - don't really need it
    subject: config.notify.subject,
    // Subject line
    text: message || "You got an irc message",
    // plaintext body
    html: message || "You got an irc message" // html body      
  };
}

// This is just a mail queue that will check every 5 seconds 
// and send the message if there is any
var mailQueue = [];

function sendMail() {
  if (mailQueue.length !== 0) {
    var message = mailQueue.shift();
    smtpTransport.sendMail(message, function (error, response) {
      if (error) {
        console.log(error);
        // add the message back to the queue cause to try again later
        mailQueue.push(message);
      } else {
        console.log("Message sent: " + response.message);
      }

      // I have to close it every time because the messages arrive out of order. 
      // If anyone has a better solution send a pull request.
      // if you don't want to use this transport object anymore, uncomment following line
      smtpTransport.close(); // shut down the connection pool, no more messages
    });
  }
}
setInterval(function() {
  sendMail();
}, 10000);

/*
* To set the key/cert explicitly, you could do the following
var fs = require('fs');

var options = {
  key: fs.readFileSync('privkey.pem'),
  cert: fs.readFileSync('certificate.crt')
};
*/

var irc = require('irc');
var bot = new irc.Client(config.options.server, config.options.nick, config.options);

bot.on('message#', function(from, to, message, raw) {
  //console.log('<%s> %s', from, message);
  if (message.match(/poorman/)) {
    // send me an email or something
    console.log("got a message for me");
    bot.emit('notify', message, from);
  }
});

bot.on('message', function(from, to, message) {
  console.log('%s => %s: %s', from, to, message);

  if (to.match(/^[#&]/)) {
    // channel message
    if (message.match(/hello/i)) {
      bot.say(to, 'Hello there ' + from);
    }
  } 
  //else {
    // private message        
  //}
});

bot.on('notice', function(nick, to, text, message) {
  if (nick === 'NickServ') {
    // msg from nickserv        
    if (text.match(/This nickname is registered\. Please choose a different nickname/)) {
      // asking for ident
      bot.emit('identify');
    }
  }
});

bot.on('identify', function() {
  bot.say('NickServ', 'identify ' + config.ident.password);
});


bot.on('error', function(message) {
  console.error('ERROR: %s: %s', message.command, message.args.join(' '));
});

bot.on('notify', function(message, from) {
  //var chunkedMailOpts = [];
  var userTag = '[' + from + ']> ';
  if (config.notify.textMessage) {
    var subjectSize = config.notify.subject.length + 3; // 3 for 2 paren and a space for the subject
    var charLimit = 140;
    var chunkSize = charLimit - subjectSize - userTag.length;
    var re = new RegExp('.{1,' + chunkSize + '}\\W', "g");
    var chunks = message.match(re);
    for (var i = 0; i < chunks.length; i++) {
      mailQueue.push(mailOptions(userTag + chunks[i]));
    }
  } else {
    mailQueue.push(mailOptions(userTag + message));
  }
});

// See http://node-irc.readthedocs.org/en/latest/API.html#events
// bot.on('pm', function (nick, message) {
//     console.log('Got private message from %s: %s', nick, message);
// });
// bot.on('join', function (channel, who) {
//     console.log('%s has joined %s', who, channel);
// });
// bot.on('part', function (channel, who, reason) {
//     console.log('%s has left %s: %s', who, channel, reason);
// });
// bot.on('kick', function (channel, who, by, reason) {
//     console.log('%s was kicked from %s by %s: %s', who, channel, by, reason);
// });