(function () {
    'use strict';
    angular
        .module('luxysaleApp')
        .factory('CategoryDataStore', Category);

    Category.$inject = ['Category'];

    function Category(Category) {
        var categoriesCache = {};

        return {
            getCategoriesByParent: function(filter) {
                var defer = $q.defer();
                var cachedResult = categoriesCache[filter];

                if(cachedResult) {
                    defer.resolve(cachedResult);
                } else {
                    Category.byParent.query(function (response) {
                        categoriesCache[filter] = response;
                        defer.resolve(response);
                    });
                }
                return defer.promise;
            }
        }
    }
})();