require('dotenv').config({silent: true});

var Twitter = require('twitter-node-client').Twitter;
var watson = require('watson-developer-cloud');

var twitter = new Twitter({
    "consumerKey": process.env.TWITTER_KEY,
    "consumerSecret": process.env.TWITTER_SECRET,
    "accessToken": process.env.TWITTER_TOKEN,
    "accessTokenSecret": process.env.TWITTER_TOKEN_SECRET,
    "callBackUrl": process.env.TWITTER_CALLBACK
});


var personality_insights = watson.personality_insights({
	url: 'https://gateway.watsonplatform.net/personality-insights/api',
	username: process.env.PERSONALITY_INSIGHTS_USERNAME,
	password: process.env.PERSONALITY_INSIGHTS_PASSWORD,
	version: 'v2'
});


twitter.getUserTimeline({ screen_name: 'adele', count: '300'}, handleError, function(tweets) {
		personality_insights.profile(createContentItemsJson(tweets), function(error, response) {
			console.log(error ? "error", error : JSON.stringify(response, null, 2));
		})
	}
);


//Callback functions
var handleError = function (err, response, body) {
    console.log('ERROR [%s]', err);
    return new Error(err);
};

function createContentItemsJson(tweets){
	var jsonObj = JSON.parse(tweets);
    //console.log('twitter_helper: success function called with data.');

    var keys = Object.keys(jsonObj);

    var contentItemsJson = {
    		   "contentItems":[]
    };


	for (var i = 0; i < keys.length; i++) {
		tweet = jsonObj[i];
		var contentItem = {
			'content': tweet.text.replace(/[^(\x20-\x7F)]*/g, ""),
			'contenttype': 'text/plain',
			'created': (new Date(tweet.created_at)).getTime()/1000.0,
    		'id': tweet.user.id,
    		'language': tweet.lang,
    		'reply': (tweet.in_reply_to_screen_name != null).toString(),
    		'forward': (typeof tweet.retweeted_status != 'undefined').toString()
		}
		contentItemsJson.contentItems.push(contentItem);
	}

	return contentItemsJson;
}