/**
 * Javascript Loader
 * load necessary files
 **/
var JavaScript = {
    load: function (src, callback) {
        // add script element
        var script = document.createElement('script'), loaded;
        // set attribute
        script.setAttribute('type', 'text/javascript');
        script.setAttribute('src', src);

        if (callback) {
            script.onreadystatechange = script.onload = function () {
                if (!loaded) {
                    callback();
                }
                loaded = true;
            };
        }

        // insert new element
        document.getElementsByTagName('head')[0].appendChild(script);
    }

};

/**
 * @var object defaults configs for live chat
 **/
var liveChatConfigsDefault = {

    /**
     * @var bool - flag open live chat at once page loaded
     * by default true
     **/
    open_on_load: true
}

// init configs
if (typeof(liveChatConfigs) == 'undefined') {
    // set defaults configs
    var liveChatConfigs = {};
}
// set liveChatConfigs from default
for (var p in liveChatConfigsDefault) {
    // set default property value
    if (typeof(liveChatConfigs[p]) == 'undefined') {
        liveChatConfigs[p] = liveChatConfigsDefault[p];
    }
}


/**
 * @var object defaults user data
 **/
var liveChatUserDataDefault = {
    account_email:              '',
    user_firstname:             '',
    user_lastname:              '',
    account_status:             '',
    account_status_id:          '',
    account_rewards_level:      '',
    account_items_allowed_out:  '',
    upgrade_eligibility:        '',
    billing_date:               '',
    amount_due:                 '',
    shipping_center:            '',
    account_logged_email:       'unregistered.user@test.mail.com'
}

// init user data
if (typeof(liveChatUserData) == 'undefined') {
    // must have the same properties as liveChatUserDataDefault
    var liveChatUserData = {};
}

/**
 * process of sent user data of ext server and set object with correct parameters of ext user and them values
 **/
var liveChatSetUserData = function () {
    // set liveChatUserData
    for (var p in liveChatUserDataDefault) {
        // set default property value
        // check exists property value in global userData
        if (typeof(userData) != 'undefined'
            && typeof(userData[p]) != 'undefined'
        ) {
            // set from globals userData
            liveChatUserData[p] = userData[p];
        } else {
            // set from default
            liveChatUserData[p] = liveChatUserDataDefault[p];
        }

        // Strip whitespace from the beginning and end of a string
        liveChatUserData[p] = (liveChatUserData[p]).trim();
    }

    // check: registered user opens chat
    if (liveChatUserData.account_email) {
        // user has real email which was used to register, so overwrite parameter `account_logged_email` using this email
        liveChatUserData.account_logged_email = liveChatUserData.account_email;
    }
}

/**
 * function checks current user has access to active conversation
 * if not, the system has to start new conversation for current user
 * ie conversation should be access only for user which created it
 **/
var updateMessageList = function () {
    // get data of ext user
    liveChatSetUserData();

    // check: email at current request and at prev request have differences
    if ($.cookie('liveChatPrevUserEmail') != liveChatUserData.account_logged_email) {
        // is set function `getThreaMessages`?
        if (typeof getThreaMessages == 'function') {
            // get message list of new conversation
            getThreaMessages();
        }
    }
}

// set object with correct parameters of ext user and them values
liveChatSetUserData();

/**
 * liveChat Loader process
 **/
var liveChatLoader = function() {

    // check is jQuery already loaded
    if (typeof(jQuery) == 'undefined') {
        // load dependencies
        // JavaScript.load('https://js3genius.com/js/jquery.min.js');
        JavaScript.load('https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js');
        // self call by timer
        setTimeout('liveChatLoader()', 100);
        // break execution
        return false;
    }

    // load necessary elements
    JavaScript.load("https://js3genius.com/js/dnd.js");
    JavaScript.load("https://js3genius.com/js/jquery.cookie.js");

    // waiting extend loading
    // display live chat
    setTimeout('liveChatDisplay()', 500);
}

// execute live chat loader
liveChatLoader();

/**
 * Display LiveChat
 **/
function liveChatDisplay() {
    // get live chat data
    $.ajax({
        type: "POST",
        data: {
            locationId:            '175',
            liveChatUserData:      liveChatUserData,
            liveChatPrevUserEmail: $.cookie('liveChatPrevUserEmail')
        },
        dataType:   'json',
        url:        "https://js3genius.com/chatExternal/chat/index?jsoncallback=?",
        cache:      false,
        async:      true,
        success: function (res) {
            if (typeof updateJsChatToken == 'function') {
                // update value of var jsChatToken
                updateJsChatToken(res);
            }

            // save information about email of ext user in the cookie
            $.cookie("liveChatPrevUserEmail", liveChatUserData.account_logged_email, {path: '/'});

            // check result
            if (typeof(res.html) != 'undefined') {
                // add html chat box
                $('body').append(res.html);
                // open chat box
                if (liveChatConfigs.open_on_load) {
                    js3chatOpen();
                }
            }
        }
    });
}

/**
 * transform object to string
 * @param object - object to be transformed into a string
 * @return string - string as a result of transformation
 **/
function objToString(obj) {

    // check the object to be transformed
    if (typeof(obj) == 'undefined') {
        console.error("undefined parameter obj.");
    }

    // transform into a string
    var s = '{\n';
    for (var p in obj) {
        s += '    "' + p + '": "' + obj[p] + '"\n';
    }

    // return the string
    return s + '}';
}

// token of current conversation
var jsChatToken;

// check active user was changed?
 setInterval('updateMessageList()', 5000);



    /**
     * @var object xhrORNIncidentCreate - XMLHttpRequest
     **/
    var xhrORNIncidentCreate = false;

    /**
     * Create Incident
     * @param object params
     **/
    function ORNIncidentCreate(params)
    {
        // check unregistered user calls live chat
        if (!liveChatUserData.account_email) {
            // Oracle ticket should not be created
            return false;
        }


        // check variable params
        if (typeof(params) == 'undefined') {
            var params = {};
        }

        // check params variable async
        if (typeof(params.async) == 'undefined') {
            params.async = true;
        }

        // check params variable method
        if (typeof(params.method) == 'undefined') {
            params.method = 'POST';
        }

        // check params variable dataType
        if (typeof(params.dataType) == 'undefined') {
            params.dataType = 'json';
        }

        // user data
        params.user = {
            email:      liveChatUserData.account_email,
            first_name: liveChatUserData.user_firstname,
            last_name:  liveChatUserData.user_lastname
        };

        // check exist xhr
        if (xhrORNIncidentCreate) {
            // break previous xhr Request
            xhrORNIncidentCreate.abort();
        }

        // send ajax request for create incident
        xhrORNIncidentCreate = $.ajax({
            async:      params.async,
            method:     params.method,
            url:        'https://js3genius.com/ajax_gamefly_incident_create',
            dataType:   params.dataType,
            data: {
                chatToken:            jsChatToken,
                sourceDataSerialized: sourceDataSerialized,
                email:                params.user.email,
                first_name:           params.user.first_name,
                last_name:            params.user.last_name,
                referring_page:       window.location.href
            },
            complete: function(){
                // reset xhr Request
                xhrORNIncidentCreate = false;
            }

        });
    }