index.js

var Twit = require('twit');
var wordfilter = require('wordfilter');
var T = new Twit(require('./config.js'));
var myText = require('./sample-text.js');

//a nice 'pick' function thanks to Darius Kazemi: https://github.com/dariusk
Array.prototype.pick = function() {
  return this[Math.floor(Math.random()*this.length)];
};

//functions 
  function tweetOK(phrase) {
      if (!wordfilter.blacklisted(phrase) && phrase !== undefined && phrase !== "" && tweetLengthOK(phrase)){
        return true;
      } else {
        return false;
      }
  }

  function tweetLengthOK(phrase) {
      if (phrase.length <= 130){
        return true;
      } else {
        return false;
      }
  }

function pickTweet(){
      var tweetText = myText.pick();
      if (tweetOK(tweetText)) {
        return tweetText;
      }
      else {
        tweetText = pickTweet();
      }
  }

function main(){

    var textToTweet = pickTweet();
    
    return new Promise((resolve, reject) => {    
      T.post('statuses/update', { status: textToTweet }, function(err, reply) {
        if (err) {
          reject(err)
        }
        else {
          resolve({payload: 'yep, tweeted: '+ textToTweet});
        }
      });
    })
  };


exports.main = main;