var ShopCart = (function(){

  var options = {
    baseUrl: '',
    ajaxAdd: '/cart/add',
    ajaxRemove: '/cart/remove',
    ajaxRefresh: '/cart/refresh'
  };

  var ajaxSend = function(url, data, callback){
    $.ajax({
      url: options.baseUrl+url,
      type: "POST",
      dataType: "json",
      data: data,
      beforeSend: function(){
        $("#article").addClass("dataLoading");
      },
      success: function(json){
        if(callback){
          return callback(json);
        }
      },
      complete:function(data){
        // Hide image container
        $("#article").removeClass("dataLoading");
      }
    });
  };

  var add = function(data, callback){
    return ajaxSend(options.ajaxAdd, data, callback);
  };

  var remove = function(data, callback){
    return ajaxSend(options.ajaxRemove, data, callback);
  };

  var refresh = function(data, callback){
    return ajaxSend(options.ajaxRefresh, data, callback);
  };

  return {
    add: add,
    remove: remove,
    refresh: refresh
  }

})();