var _serviceDomain = "//et.educationdynamics.com";

var _commandsHashTable = {};
_commandsHashTable['_etPageView'] = etPageView;
_commandsHashTable['_etEvent'] = etEvent;
_commandsHashTable['_etImpression'] = etImpression;

var _pageViewGUID;
var _enterpriseGUID;

//include the JSON file if the browser does not support the JSON object natively
(function(){
    if (!window.JSON){
        var script = document.createElement('script');
        script.type = "text/javascript";
        script.language = "javascript";
        script.src = _serviceDomain+ "/json2.js";
        document.body.appendChild(script);
    }
});

var _etQueue = function () {
    this._flushed = false;
    this._methods = [];
};

_etQueue.prototype = {
    push: function (method) {
        if (this._flushed) {
            _commandsHashTable[method.slice(0, 1)](method.slice(1));
        }
        else {
            this._methods.push(method);
        }
    },

    flush: function () {
        if (this._flushed) {
            return;
        }
        else {
            while (this._methods[0]) {
                var method = this._methods.shift();
                _commandsHashTable[method.slice(0, 1)](method.slice(1));
            }
            this._flushed = true;
        }
    }
};

(function() {
    SetTrackingPixel();
})();

function CompleteTracking(enterpriseGUID) {
    _enterpriseGUID = enterpriseGUID;
    CheckForCampaignTracking();
    _etq = toQueue(_etq);
    _etq.flush();
};

function CreateDynamicScript(source) {
    var et = document.createElement("script");
    et.async = true;
    et.src = source;
    var s = document.getElementsByTagName("script")[0];
    s.parentNode.insertBefore(et, s);
}

function SetTrackingPixel() {
    //var source = _serviceDomain + "/PixelTrack_ET.aspx";
    var source = _serviceDomain + "/Tracking/FirePixelTrackET";

    CreateDynamicScript(source);
};

function CheckForCampaignTracking() {
    var trackid = GetQueryStringParam('trackid');
    var cookieChecked = false;

    if (!trackid) {
        trackid = GetCookie("_CampaignTrackID");
        cookieChecked = true;
    }

    var affid = GetQueryStringParam('aid');

    if (affid) {
        CreateSessionCookie("_AffiliateID", affid)
    }

    if (trackid) {
        if (!cookieChecked) {
            CreateSessionCookie("_CampaignTrackID", trackid);
        }
    }
};

function GetQueryStringParam(name){
    var results = new RegExp('[\\?&]' + name + '=([^&#]*)').exec(window.location.href);
    if (!results) { 
        return 0; 
    }
    return results[1] || 0;
};

function toQueue(array) {
    var _newQueue = new _etQueue();
    while (array[0]) {
        if (array[0] !== undefined)
            _newQueue.push(array.shift());
    }
    return _newQueue;
};

function etPageView(args) {
    //var prepopDeviceGUID = args[0];
    if (!_pageViewGUID) {
        _pageViewGUID = CallGetUUID();
    }
    var guids = VerifyCookies(true);

    if (!guids.newCookieCreated) {
        var url = window.location.href;

        var pageDataLayer = "";

        if(typeof dataLayer !== 'undefined' && dataLayer && dataLayer[0])
            pageDataLayer = JSON.stringify(dataLayer[0]);

        var source = _serviceDomain + "/Tracking/InsertPageView?pageViewGUID=" + encodeURI(_pageViewGUID) + "&sessionGUID=" + encodeURI(guids.sessionGUID) + "&fullURL=" + encodeURIComponent(url)+ "&dataLayer=" + encodeURIComponent(pageDataLayer);
        
        //if (pageViewCategory) {
        //    source += "&pageViewCategory=" + encodeURI(pageViewCategory);
        //}

        CreateDynamicScript(source);
    }

    //var allClickTracs = document.querySelectorAll('[data-clickTrack]');

    //[].forEach.call(allClickTracs, function(item) {
    //    item.href = item.href.replace("pageViewGUID=","pageViewGUID=" + _pageViewGUID);
    //});
};

function etEvent(args) {
    var actionName = args[0];
    var actionValue = args[1];
    var actionCategory = args[2];
    var href = args[3];

    if (!_pageViewGUID) {
        _pageViewGUID = CallGetUUID();
    }

    var guids = VerifyCookies(false);
  
    var source = _serviceDomain + "/Tracking/InsertEventAction?pageViewGUID=" + encodeURI(_pageViewGUID) + "&actionName=" + encodeURI(actionName) + "&actionValue=" + encodeURI(actionValue);

    if (actionCategory) {
        source += "&actionCategory=" + encodeURI(actionCategory);
    }

    CreateDynamicScript(source);

    if (href) {
        setTimeout("gotoUrl('" + href + "')", 100);
    }
};


function gotoUrl(href) {
    window.location.href = href;
};

//function VerifyCookies(includePageView, prepopDeviceGUID) {
function VerifyCookies(includePageView) {
    var sessionGUID = GetCookie("_Session");
    var deviceGUID = GetCookie("_Device");
    var cookieCreated = false;

    if (!sessionGUID) {
        sessionGUID = CreateSessionCookie("_Session", CallGetUUID());
        cookieCreated = true;
    }
    if (!deviceGUID) {
        //if (!prepopDeviceGUID)
        //    deviceGUID = CreateDeviceCookie("_Device", CallGetUUID());
        //else
        deviceGUID = CreateDeviceCookie("_Device", CallGetUUID());

        cookieCreated = true;
    }

    if (cookieCreated) {
        SaveCookies(sessionGUID, deviceGUID, includePageView);
    }

    return { sessionGUID: sessionGUID, deviceGUID: deviceGUID, newCookieCreated: cookieCreated };
};

function SaveCookies(sessionGUID, deviceGUID, includePageView) {
    var url = window.location.href;
    var referUrl = document.referrer;
    var campaignTrackId = GetCookie("_CampaignTrackID");

    var source = _serviceDomain + "/Tracking/SaveAllGUIDs?sessionGUID=" + encodeURI(sessionGUID) + "&deviceGUID=" + encodeURI(deviceGUID) + "&referringURL=" + encodeURIComponent(referUrl);
   
    if(_enterpriseGUID) {
        source += "&enterpriseGUID=" + encodeURI(_enterpriseGUID);
    }
    if(campaignTrackId) {
        source += "&campaignTrackId=" + encodeURI(campaignTrackId);
    }
    if (includePageView) {
        var pageDataLayer = "";;

        if(typeof dataLayer !== 'undefined' && dataLayer && dataLayer[0])
            pageDataLayer = JSON.stringify(dataLayer[0]);

        source += "&pageViewGUID=" + encodeURI(_pageViewGUID) + "&pageViewURL=" + encodeURIComponent(url) + "&dataLayer=" + encodeURIComponent(pageDataLayer);
    }

    CreateDynamicScript(source);
};

function CreateSessionCookie(name, value) {
    var cookie = name + "=" + value + "; path=/";
    document.cookie = cookie;
    return value;
};
function CreateDeviceCookie(name, value) {
    var date = new Date(2037, 1, 1);
    var expires = "; expires=" + date.toGMTString();
    var cookie = name + "=" + value + expires + "; path=/";
    document.cookie = cookie;
    return value;
};
function DeleteCookie(name) {
    var date = new Date(0);
    var expires = "; expires=" + date.toGMTString();
    var cookie = name + "=" + expires + "; path=/";
    document.cookie = cookie;
};

function ParseAllCookies() {
    var cookies = {}, i, pair, name, value, separated = document.cookie.split(';'), unparsedValue;
    for (i = 0; i < separated.length; i = i + 1) {
        pair = separated[i].split('=');
        name = pair[0].replace(/^\s*/, '').replace(/\s*$/, '');

        try {
            value = decodeURIComponent(pair[1]);
        }
        catch (e1) {
            value = pair[1];
        }

        cookies[name] = value;
    }
    return cookies;
};

function GetCookie(cookieName) {
    var returnValue, item, cookies = ParseAllCookies();

    if (typeof cookieName === 'string') {
        returnValue = (typeof cookies[cookieName] !== 'undefined') ? cookies[cookieName] : null;
    }
    else if (typeof cookieName === 'object' && cookieName !== null) {
        returnValue = {};
        for (item in cookieName) {
            if (typeof cookies[cookieName[item]] !== 'undefined') {
                returnValue[cookieName[item]] = cookies[cookieName[item]];
            }
            else {
                returnValue[cookieName[item]] = null;
            }
        }
    }
    else {
        returnValue = cookies;
    }

    return returnValue;
};

function CallGetUUID() {
    var left = window.screenLeft ? window.screenLeft : window.screenX;
    var top = window.screenTop ? window.screenTop : window.screenY;

    if (!left) {
        left = 0;
    }
    if (!top) {
        top = 0;
    }

    var k = new Kybos(window.navigator.userAgent, Math.random(), left + top).fract53;
    var uuid = GetUUID(k);
    return uuid;
};

function GetUUID(
  z, a, b                // placeholders
) {
    for (               // loop :)
      b = a = '';        // b - result , a - numeric variable
      a++ < 36;        // 
      b += a * 51 & 52  // if "a" is not 9 or 14 or 19 or 24
                  ?  //  return a random number or 4
         (
           a ^ 15      // if "a" is not 15
              ?      // genetate a random number from 0 to 15
           8 ^ z() *
           (a ^ 20 ? 16 : 4)  // unless "a" is 20, in which case a random number from 8 to 11
              :
           4            //  otherwise 4
           ).toString(16)
                  :
         '-'            //  in other cases (if "a" is 9,14,19,24) insert "-"
      );
    return b
};

//Click and Impression tracking section

function SaveClick(programProductId, listingTypeId, pageNumber, position, redirectURL) {
    //flush before anything to make sure our pageview guid is there
    _etq.flush();

    var campaignTrackId = GetCookie("_CampaignTrackID");

    var source = _serviceDomain + "/Tracking/SaveClick?pageViewGUID=" + _pageViewGUID + 
        "&programProductID=" + encodeURI(programProductId) + 
        "&ListingTypeID=" + encodeURIComponent(listingTypeId) + 
        "&Position=" + encodeURIComponent(position) +
        "&PageNumber=" + encodeURIComponent(pageNumber) +
        "&redirectURL=" + encodeURIComponent(redirectURL);

    if(campaignTrackId) {
        source += "&campaignTrackId=" + encodeURI(campaignTrackId); 
    }
   
    CreateDynamicScript(source);

    var win = window.open(redirectURL, '_blank');
    win.focus();
};

function etImpression(args) {
    _etq.flush();

    var listingTypeId = args[0];
    var impressionCollection = args[1];

    var source = _serviceDomain + "/Tracking/SaveImpression?pageViewGUID=" + encodeURI(_pageViewGUID) + 
        "&ListingTypeID=" + encodeURIComponent(listingTypeId) + 
        "&impressionsJSON=" + encodeURIComponent(JSON.stringify(impressionCollection));

    CreateDynamicScript(source);
};

//end impression and click tracking section


// From http://baagoe.com/en/RandomMusings/javascript/
// Johannes Baagøe <baagoe@baagoe.com>, 2010
function Mash() {
    var n = 0xefc8249d;

    var mash = function (data) {
        data = data.toString();
        for (var i = 0; i < data.length; i++) {
            n += data.charCodeAt(i);
            var h = 0.02519603282416938 * n;
            n = h >>> 0;
            h -= n;
            h *= n;
            n = h >>> 0;
            h -= n;
            n += h * 0x100000000; // 2^32
        }
        return (n >>> 0) * 2.3283064365386963e-10; // 2^-32
    };

    return mash;
};

function Kybos() {
    return (function (args) {
        var c = 1;
        var s = [];
        var k = 0;

        var mash = Mash();
        var s0 = mash(' ');
        var s1 = mash(' ');
        var s2 = mash(' ');
        for (var j = 0; j < 8; j++) {
            s[j] = mash(' ');
        }

        args.push([+new Date]);

        for (var i = 0; i < args.length; i++) {
            s0 -= mash(args[i]);
            if (s0 < 0) {
                s0 += 1;
            }
            s1 -= mash(args[i]);
            if (s1 < 0) {
                s1 += 1;
            }
            s2 -= mash(args[i]);
            if (s2 < 0) {
                s2 += 1;
            }
            for (var j = 0; j < 8; j++) {
                s[j] -= mash(args[i]);
                if (s[j] < 0) {
                    s[j] += 1;
                }
            }
        }
        //addnoise
        for (var i = arguments.length - 1; i >= 0; i--) {
            for (j = 0; j < 8; j++) {
                s[j] -= mash(arguments[i]);
                if (s[j] < 0) {
                    s[j] += 1;
                }
            }
        }

        var random = function () {
            var a = 2091639;
            k = s[k] * 8 | 0;
            var r = s[k];
            var t = a * s0 + c * 2.3283064365386963e-10; // 2^-32
            s0 = s1;
            s1 = s2;
            s2 = t - (c = t | 0);
            s[k] -= s2;
            if (s[k] < 0) {
                s[k] += 1;
            }
            return r;
        };

        random.fract53 = function () {
            return random() +
        (random() * 0x200000 | 0) * 1.1102230246251565e-16; // 2^-53
        };

        random.args = args;
        return random;

    } (Array.prototype.slice.call(arguments)));
};