gistfile1.js

// http://www.alchemyapi.com/api/sentiment/proc.html

var http = require('http');

//Create the AlchemyAPI object
var AlchemyAPI = require('./alchemyapi');
var alchemyapi = new AlchemyAPI();


var demo_text = 'Yesterday dumb Bob destroyed my fancy iPhone in beautiful Denver, Colorado. I guess I will have to head over to the Apple Store and buy a new one.';

http.createServer(function (req, res) {
  res.setHeader('Content-Type', 'application/json');

  var mad_words = ['mad', 'fuck'];

  // // Determine overall sentiment of text
  alchemyapi.sentiment('html', demo_html, {}, function(response) {
    res.end(JSON.stringify(response['docSentiment']));
    
    var s = parseFloat(response.docSentiment.score);
    var type = response.docSentiment.type;

    // RULE 1: sentiment score
    if (type == 'positive') {
      // set color based on s
    }
    else if (type == 'negative') {
      // set color based on s
    }

  // RULE 2: create a group of words and a certain number signifies an emotion
  // search for a group of words
  count = 0;
  var personal_pronouns = ['i', 'me', 'you', 'he', 'him', 'she', 'her', 'it', 'we', 'us', 'they', 'them'];
  for (var i = 0; i < words.length; i++) {
    var lowerWord = words[i].toLowerCase();
    for (var j=0; j<personal_pronouns.length; j++) {
      if (lowerWord == personal_pronouns[j]) {
        count++;
      }
    }
  }
  console.log('The text included '+count+' personal pronouns.');
  if (count > 3) {
    // set color to mean...
  }

  // RULE 3: if message is very short... etc
    if (msg.length < 10) {
      // cold
      color = 'gray';
    } 


 

  });
  
}).listen(3000);
console.log('Server running at 3000');