GA event tracking module with share tracking

GA event tracking module with share tracking

define([
  'jquery',
  'jquery.cookie'
], function($) {
  'use strict';
  var $body = $('body'),
      sendEvent = function(category, action, label) {
        ga('send', 'event', {
          'eventCategory': category,
          'eventAction': action,
          'eventLabel': label
        });
      },
      sendSocial = function(shareNetwork, action, url) {
        ga('send', 'social', shareNetwork, action, url);
      },
      stallClickThrough = function($link, e) {
        setTimeout(function () {
          window.location.href = $link.attr('href');
        }, 100);
        e.preventDefault();
      },
      trackDownload = function(link, e) {
        var filetypes = /(zip|ZIP|pdf|PDF|csv|CSV|doc*|DOC*|xls*|XLS*)+$/,
            filename = /(\w|[\-.])+$/.exec(link.href),
            ext = /[^\.]+$/.exec(filename)[0],
            $link = $(link);

        if (!filetypes.test(ext)){
          return false;
        }
        sendEvent('Download', '.' + ext + ' download', filename );
        stallClickThrough($link, e);
        return true;
      },
      trackCustomEvent = function($link) {
        var category = $link.data('category') || '',
            label = $link.data('label') || '',
            action = $link.data('action') || 'click';
        sendEvent(category, action, label);
      },
      socialTracking = function() {
        var poll,
            fbPoller = setInterval(function(){
              //facebook
              if (typeof FB !== 'undefined' && FB.Event && FB.Event.subscribe) {
                FB.Event.subscribe('edge.create', function(targetUrl) {
                  ga('send', 'social', 'facebook', 'like', targetUrl);
                });
                FB.Event.subscribe('edge.remove', function(targetUrl) {
                  ga('send', 'social', 'facebook', 'unlike', targetUrl);
                });
                clearInterval( fbPoller );
              } else if ( poll > 100 ) {
                clearInterval( fbPoller );
              } else {
                poll += 1;
              }
            }, 100);

      },
      attachHandlers = function() {
        $body.on('click', 'a', function(e) {
          var $link = $(this);

          //is downloadable type?
          //this will return false if not a downloadable .ext
          var isDownload = trackDownload(this, e);

          //is custom in page event? No forwarding link?
          if (!isDownload && $link.hasClass('js-trackevent')) {
            trackCustomEvent($link);
            e.preventDefault();
          }
          //is custom event? But still needs to link through
          if (!isDownload && $link.hasClass('js-trackevent-linkthrough')) {
            trackCustomEvent($link);
            stallClickThrough($link, e);
          }
        });
        var $eventoSendOnLoad = $('.js-sendGaEvent');
        if ($eventoSendOnLoad.length) {
          $eventoSendOnLoad.each(function() {
            trackCustomEvent($(this));
          });
        }
        socialTracking();

      };

  var GaTracking = function() {};

  GaTracking.prototype.activate = function() {
    attachHandlers();
  };
  GaTracking.prototype.sendShare = function(shareNetwork, action, url) {
    sendSocial(shareNetwork.toLowerCase(), action, url);
  };
  GaTracking.prototype.sendEvent = function(category, action, label) {
    sendEvent(category, action, label);
  };



  return new GaTracking();
});