var Promise = require('promise');
var requestPromise = require('./helpers/requestPromise.js');
var BasePlugin = require('./base.js');
var logger = require('winston');

class Youtube extends BasePlugin {
  constructor(config) {
	super(config);
	this.name = 'Youtube';
	this.config = config;
  }

  test(input) {
	// Kernel version
	var res = null;
	if (res = input.match(/https?:\/\/(?:www\.)?(?:(?:youtu\.be\/([\w-]+))|(?:(?:youtube\.com\/watch\?(?:[\w=#-]+&)*v=)([\w-]+)))/i)) {
	  return true;
	}
	return false;

  }

  getYoutubeResult(id, resolve, reject) {
	if(typeof id !== 'undefined') {
	  var googleapi = require('./helpers/googleapi.js')(this.config);
	  googleapi.getYoutubeVideoById(id).then(function(result) {
		var resultString = 'Youtube: ';
		resultString += result.title;
		resultString += ', esittäjänä ' + result.channelTitle;
        if(typeof result.statistics !== 'undefined') {
		  var rotten = (Number(result.statistics.likeCount)/(Number(result.statistics.likeCount)+Number(result.statistics.dislikeCount))).toFixed(2);
		  resultString += ' ('+result.duration+', '+ result.statistics.viewCount +' katselukertaa, '+rotten*100+'% tykätty, '+result.url+' )';
        }
		resolve(resultString);
	  }, function(err) {
        logger.info('Error', err);
		reject('Youtube: jokin meni pieleen...');
	  });
	} else {
		reject('Youtube: jokin meni pahasti pieleen...');
	}
  }

  result(input) {
	var that = this;
	var resultPromise = new Promise(function(resultResolve, resultReject) {
	  var res = null;

	  if (res = input.match(/https?:\/\/(?:www\.)?(?:(?:youtu\.be\/([\w-]+)))/i)) {
		var id = res[1];

  		that.getYoutubeResult(id, resultResolve, resultReject);
	  } else if (res = input.match(/https?:\/\/(?:www\.)?(?:(?:youtube\.com\/watch\?(?:[\w=#-]+&)*v=)([\w-]+))/i)) {
		var id = res[1];

  		that.getYoutubeResult(id, resultResolve, resultReject);
	  } else {
		resultReject('Youtube: jokin meni pieleen (ei osunut)...');
	  }
	});

	return resultPromise;
  }
}

module.exports = Youtube;