Intercom init & event tracking

gistfile1.txt

    function UserTrackingSrv(ids) {

        var self = this;
        var appIDs = ids;
        var userID;
        var userLogged = false;
        var ic;

        this.init = function() {
            if (appIDs.analyticsID !== undefined) {
                window.GoogleAnalyticsObject = 'ga';
                window.ga = window.ga || function(){
                    (window.ga.q = window.ga.q || []).push(arguments);
                };
                window.ga.l =1 * new Date();
                var a = document.createElement('script');
                var m = document.getElementsByTagName('script')[0];
                a.async = 1;
                a.src = '//www.google-analytics.com/analytics.js';
                m.parentNode.insertBefore(a, m);

                //testing
                ga('create', appIDs.analyticsID, {'cookieDomain': 'none'});
            }
            if (appIDs.intercomID !== undefined) {
                var w = window;
                var icc = w.Intercom;
                if (typeof icc === "function") {
                    icc('reattach_activator');
                    icc('update');
                } else {
                    var d = document;
                    var i = function() {
                        i.c(arguments);
                    };
                    i.q = [];
                    i.c = function(args) {
                        i.q.push(args);
                    };
                    w.Intercom = i;
                    var l = function() {
                        var s = d.createElement('script');
                        s.type = 'text/javascript';
                        s.async = true;
                        s.src = 'https://widget.intercom.io/widget/'+ appIDs.intercomID;
                        var x = d.getElementsByTagName('script')[0];
                        x.parentNode.insertBefore(s, x);
                    };
                    if (w.attachEvent) {
                        w.attachEvent('onload', l);
                    } else {
                        w.addEventListener('load', l, false);
                    }
                }

                ic = window.Intercom;
            }
        };

        this.setUser = function(userId, email) {

            userLogged = true;
            
            ga('create', appIDs.analyticsID, { 'name': 'userLogged', 'userId': userId });
            
            window.Intercom('boot', {
                app_id: appIDs.intercomID,
                email: email,
                user_id: userId
            });
            
            self.sendEvent({
                name: 'logged-in',
                user_id: userId,
                metadata: {
                    label: 'test'
                }
            });
        };

        this.sendEvent = function(e) {

            var epoch =  new Date().getTime();

            if (userLogged) {
                ga('userLogged.send', 'event', 'userTracking', e.name, e.metadata.label);
                ic('trackEvent', e.name , epoch);
            } else {
                ga('send', 'event', 'userTracking', e.name, e.metadata.label);
            }
        };