(function() {'use strict';
    if (!Array.isArray){Array.isArray = function(arg){return Object.prototype.toString.call(arg) === '[object Array]';};}
    if (!String.prototype.trim){String.prototype.trim = function () {return this.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');};}

    var WPBruiserClient = function(){
        var browserInfo = new Array();
        function init(){
            var w=window,d=document,e=0,f=0;e|=w.ActiveXObject?1:0;e|=w.opera?2:0;e|=w.chrome?4:0;
            e|='getBoxObjectFor' in d || 'mozInnerScreenX' in w?8:0;e|=('WebKitCSSMatrix' in w||'WebKitPoint' in w||'webkitStorageInfo' in w||'webkitURL' in w)?16:0;
            e|=(e&16&&({}.toString).toString().indexOf("\n")===-1)?32:0;f|='sandbox' in d.createElement('iframe')?1:0;f|='WebSocket' in w?2:0;
            f|=w.Worker?4:0;f|=w.applicationCache?8:0;f|=w.history && history.pushState?16:0;f|=d.documentElement.webkitRequestFullScreen?32:0;f|='FileReader' in w?64:0;

            var ua = navigator.userAgent.toLowerCase();
            var regex = /compatible; ([\w.+]+)[ \/]([\w.+]*)|([\w .+]+)[: \/]([\w.+]+)|([\w.+]+)/g;
            var match = regex.exec(ua);
            browserInfo = {screenWidth:screen.width,screenHeight:screen.height,engine:e,features:f};
            while (match !== null) {
                var prop = {};
                if (match[1]) {
                    prop.type = match[1];
                    prop.version = match[2];
                } else if (match[3]) {
                    prop.type = match[3];
                    prop.version = match[4];
                } else {
                    prop.type = match[5];
                }
                prop.type = (prop.type).trim().replace('.','').replace(' ','_');
                var value = prop.version ? prop.version : true;
                if (browserInfo[prop.type]) {
                    !Array.isArray(browserInfo[prop.type])?browserInfo[prop.type]=new Array(browserInfo[prop.type]):'';
                    browserInfo[prop.type].push(value);
                }
                else browserInfo[prop.type] = value;
                match = regex.exec(ua);
            }
        };

        var requestTokens = function(){for(var i = 0; i < document.forms.length; ++i){retrieveToken(document.forms[i]);}};

        function retrieveToken(formElement){

            var requestObj = (window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP"));

            var formFieldElm = formElement.querySelector('input[name="Fk-OLn-QWI-eug-OHf"]');
            if(!requestObj || !formFieldElm) return;
            var ajaxData = {};

            ajaxData['Fk-OLn-QWI-eug-OHf'] = '7da7b71c19';
            ajaxData['action']      = 'gdbcRetrieveToken';
            ajaxData['requestTime'] = (new Date()).getTime();
            ajaxData['browserInfo'] = JSON.stringify(browserInfo);

            requestObj.open('POST', '/wp-admin/admin-ajax.php', true);
            requestObj.setRequestHeader("Content-type", "application/x-www-form-urlencoded; charset=UTF-8");
            requestObj.setRequestHeader("X-Requested-With", "XMLHttpRequest");
            requestObj.setRequestHeader('Accept',"application/json, text/javascript, */*; q=0.01");
            requestObj.send(serializeObject(ajaxData));

            requestObj.onreadystatechange = function () {
                if (4 === requestObj.readyState && 200 === requestObj.status)
                {
                    try
                    {
                        var rs = JSON.parse(requestObj.responseText);
                        if(rs.data === 'undefined')
                            return;
                        
                        var tokens = {};
                        
                        for(var p in rs.data)
                        {
                            if(p=='token')
                            {
                                formFieldElm.value = rs.data[p];
                                tokens[formFieldElm.name] = null;
                            }
                            else
                            {
                                var value = '', arrValues = rs.data[p].split('|');
                                for (var i = 0; i < arrValues.length; ++i) {
                                    if (browserInfo.hasOwnProperty(arrValues[i]))
                                        value += browserInfo[arrValues[i]];
                                }

                                var elm = document.createElement("input");elm.name = p;elm.value=value;elm.type='hidden';formElement.appendChild(elm);
                                tokens[elm.name] = null;
                                
                                if((' ' + formElement.className + ' ').indexOf(' mailpoet_form ') > -1){
                                    elm.name = 'data[' + p + ']';formFieldElm.name = 'data[' + formFieldElm.name + ']';
                                }
                            }
                        }

                         window.jQuery && jQuery.ajaxPrefilter(function( options, originalOptions, jqXHR ) {
                            
                            if(!formElement.querySelector('.nf-element'))
                                return;
                            console.log(options);console.log(originalOptions);
                            
                            if( !isObject(options) || !isObject(originalOptions) || !('data' in originalOptions) || !isObject(originalOptions.data))
                                return;
                            
                            if( !('action' in originalOptions.data) || originalOptions.data.action !== 'nf_ajax_submit')
                                return;

                            for(var token in tokens){
                                tokens[token] = formElement.querySelector('input[name="'+token+'"]');
                                tokens[token] && (tokens[token] = tokens[token].value );
                            }
                            
                            options.data = jQuery.param(jQuery.extend(originalOptions.data||{}, tokens));
                            
                        });
                        
                        
                    }
                    catch(e){console.log(e.message);}
                }
            }
        }

        init();

        function isObject(a) {return (!!a) && (a.constructor === Object);}
        
        function serializeObject(obj) {
            var str = [];
            for(var p in obj)
                if (obj.hasOwnProperty(p)) {
                    str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));
                }
            return str.join("&");
        }
        return {requestTokens : requestTokens};
    }

    window.WPBruiserClient = new WPBruiserClient();window.WPBruiserClient.requestTokens();

})();