meme.js

var querystring = require('querystring');
var http = require('http');
var util = require('util');

exports.process = function(message, sayCallback) {
  if(message.indexOf('generate meme') !== -1) {
    var params = message.split(' ');
    if(exports.types[params[2]]) {
      var linesRegex = new RegExp(params[2] + " (.*) / (.*)");
      var lines = linesRegex.exec(message);
      generateMeme(exports.types[params[2]], lines[1], lines[2], function(memeMessage) {
        sayCallback(memeMessage);
      });
    }
    else {
      var noMemeMessage;
      var memeList = [];
      for(var key in exports.types) {
        memeList.push(key);
      }
      if(params[2] !== 'list') {
        noMemeMessage = "Sorry, I don't have that meme. ";
      }
      else {
        noMemeMessage = "";
      }

      noMemeMessage += "I have the following memes: ";

      for(var meme in memeList) {
        noMemeMessage += memeList[meme] + ' ';
      }

      sayCallback(noMemeMessage);
    }
  }
};

exports.types = {
  successkid: {
    generatorId: 121,
    imageId: 1031
  },
  yuno: {
    generatorId: 2,
    imageId: 166088
  },
  dosequis: {
    generatorId: 74,
    imageId: 2485
  },
  couragewolf: {
    generatorId: 303,
    imageId: 24
  },
  philosoraptor: {
    generatorId: 17,
    imageId: 984
  },
  philosoraptor_with_pipe: {
    generatorId: 17,
    imageId: 1193030
  },
  businesscat: {
    generatorId: 308,
    imageId: 332591
  },
  bill: {
    generatorId: 9623,
    imageId: 439720
  },
  yoda: {
    generatorId: 629,
    imageId: 963
  },
  xzibit: {
    generatorId: 79,
    imageId: 108785
  },
  trollface: {
    generatorId: 68,
    imageId: 269
  },
  fry: {
    generatorId: 305,
    imageId: 84688
  },
  inception: {
    generatorId: 1623,
    imageId: 575333
  },
  csi : {
    generatorId: 1370,
    imageId: 172109
  }
};

generateMeme = function(memeType, line1, line2, callback) {
  var result;
  var options = {
    host: 'memegenerator.net',
    port: 80,
    path: '/create/instance',
    method: 'POST',
    headers: {
      'Content-Type': 'application/x-www-form-urlencoded'
    }
  };

  var request = http.request(options);
  request.on('response', function(res) {
    res.on('data', function(chunk) {
      util.log('[info] ' + chunk);
    });

    res.on('error', function(e) {
      util.log('[error] ' + e);
      callback("Sorry, I wasn't able to do that.");
    });

    util.log('[debug] response code: ' + res.statusCode);
    util.log('[debug] response: ' + util.inspect(res.headers));
    var instanceId = res.headers.location;
    util.log('[info] meme instanceid: ' + instanceId);
    if(instanceId) {
      instanceId = (/\/instance\/(.*)$/).exec(instanceId)[1];
      callback("http://images.memegenerator.net/instances/400x/" + instanceId + ".jpg");
    }
    else {
      callback("An error occurred");
    }
  });

  request.on('error', function(e) {
    util.log('[error] ' + e);
    callback("Sorry, I wasn't able to do that.");
  });


  request.write(
    querystring.stringify({
      generatorID: memeType.generatorId,
      imageID: memeType.imageId,
      text0: line1,
      text1: line2,
      languageCode: 'en',
      watermarkCode: ''
    })
  );

  request.end();
};