var CZAJSONP = (function(){
  var counter = 0, head, query, key, window = this;
  function load(url) {
    var script = document.createElement('script'),
      done = false;
    script.src = url;
    script.async = true;
 
    script.onload = script.onreadystatechange = function() {
      if ( !done && (!this.readyState || this.readyState === "loaded" || this.readyState === "complete") ) {
        done = true;
        script.onload = script.onreadystatechange = null;
        if ( script && script.parentNode ) {
          script.parentNode.removeChild( script );
        }
      }
    };
    if ( !head ) {
      head = document.getElementsByTagName('head')[0];
    }
    head.appendChild( script );
  }
  
  function jsonp(url, params, callback) {
    query = "?";
    params = params || {};
    for ( key in params ) {
      if ( params.hasOwnProperty(key) ) {
        query += encodeURIComponent(key) + "=" + encodeURIComponent(params[key]) + "&";
      }
    }
    var jsonp = "json" + (++counter);
    window[ jsonp ] = function(data){
      callback(data);
      try {
        delete window[ jsonp ];
      } catch (e) {}
      window[ jsonp ] = null;
    };
 
    load(url + query + "callback=" + jsonp);
    return jsonp;
  }
  
  return {
    get:jsonp
  };
}());

var ajaxQueue = {};
function czaAjaxRequest(options) {
  if (!options || !options['url']) return false;
  if (!options['type']) options['type'] = 'GET';
  if (!options['params']) options['params'] = { };
  if (!options['header']) options['header'] = 'Content-Type';
  if (!options['header-type']) options['header-type'] = 'application/x-www-form-urlencoded';
  if (!options['async']) options['async'] = true;
  if (!options['onSuccess']) options['onSuccess'] = function(response) { ajaxQueue[options['url']] = 0; };
  if (!options['onError']) options['onError'] = function() { ajaxQueue[options['url']] = 0; };
  
  if (!options['data-type']) option['data-type'] = 'html';
  
  ajaxQueue[options['url']] = 1;
  
  if (options['data-type'] != 'jsonp') {
      var xmlHttpReq = false;
      var self = this;
      // Mozilla/Safari
      if (window.XMLHttpRequest) {
          self.xmlHttpReq = new XMLHttpRequest();
      } else if (window.ActiveXObject) {// IE
          self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
      }
      
      self.xmlHttpReq.open(options['type'], options['url'], options['async']);
      self.xmlHttpReq.setRequestHeader(options['header'], options['header-type']);
      self.xmlHttpReq.onreadystatechange = function() {
          if (self.xmlHttpReq.readyState == 4) {
            if (self.xmlHttpReq.status == 200 ) {
              if (option['data-type'] != 'json') self.xmlHttpReq.responseText = JSON.parse(self.xmlHttpReq.responseText);
              options['onSuccess'](self.xmlHttpReq.responseText);
              ajaxQueue[options['url']] = 0;
            } else {
              options['onError']();
              ajaxQueue[options['url']] = 0;
            }
          }
      }
      self.xmlHttpReq.send(options['params']);
  } else {
    CZAJSONP.get(options['url'], options['params'], options['onSuccess']);
  }
}

function czaGetCookie(cname){
  var name = cname + "=";
  var ca = document.cookie.split(';');
  for(var i=0; i<ca.length; i++)
  {
      if(typeof String.prototype.trim !== 'function') {
      String.prototype.trim = function() {
        return this.replace(/^\s+|\s+$/g, ''); 
        }
    }
    var c = ca[i].trim();
    if (c.indexOf(name)==0) return c.substring(name.length,c.length);
  }
  return "";
}


function getDNIRecord(code, app_host){
  var referrer = document.referrer || '';
  var host = window.location.href;
  var protocol = window.location.protocol;
  var is_dni = czaGetCookie("dni");
  var is_new_visitor = czaGetCookie("CZ_Visitor_id");
  var ajaxOption = {
    "type"    : "POST",
    "async"   : true,
    "url"     : protocol+"//"+app_host+"/load_dni",
    "params"  : { "ref":referrer,
                  "code":code,
                  "host": host,
                  "browser": "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0",
                  "ip_host":"176.9.127.69",
                  "is_dni":is_dni,
                  "app_host":app_host,
                  "is_new_visitor": is_new_visitor,
                  "query_string":""
              },
    "data-type" : "jsonp",
    "onSuccess" : function(data){
    }
  }
  czaAjaxRequest(ajaxOption);
}