Twitter Sentiment Analysis

aylien_textapi_sample_tweets_sentiment.js

//**********************************************************************
//  Enter the Twitter handle below (var twitterHandle = 'BBCBreaking') to 
//  see a Sentiment Analysis of the first 10 tweets.
//  :-) = positive, :-| = neutral, :-( = negative
//**********************************************************************

var AYLIENTextAPI = require('aylien_textapi'),
  		request = require('request'),
  		cheerio = require('cheerio');
var textapi = new AYLIENTextAPI({
  application_id: 'YourApplicationId',
  application_key: 'YourApplicationKey'
});

var twitterHandle = 'BBCBreaking';

function sentimentToSmiley(sentiment) {
  if(sentiment === "neutral") { return ':-|' }
  if(sentiment === "negative") { return ':-(' }
  else { return ':-)' }
}

function sentiment(text, callback) {
	textapi.sentiment(text, function(err, resp) {
  	if (err !== null) {
    	console.log("Error: " + err);
  	} else {
    	callback(resp.polarity);
  	}
	});
}

request('https://www.twitter.com/' + twitterHandle, function(err, response) {
  var $ = cheerio.load(response.body);
  var i = 0;
  $('.tweet-text').toArray().forEach(function(item) {
    var text = $(item).text();  
    if(i < 10){
      i++;
    sentiment(text, function(results) {
      console.log(sentimentToSmiley(results), '-', text.replace(/\n/g, ' '));
    });
    
    } else {return}
    
  });
});