.factory('Query', ['$log', '$q', '$http', 'apiURL', '$httpParamSerializer',
    function($log, $q, $http, apiURL, $httpParamSerializer) {

        var toparams = function(obj) {
            var p = [];
            for (var key in obj) {
                p.push(key + '=' + encodeURIComponent(obj[key]));
            }
            return p.join('&');
        };

        function getSettings(requestData) {
            return {
                url: requestData.url,
                dataType: requestData.dataType || "json",
                data: toparams(requestData.data) || {},
                headers: requestData.headers || {
                    "Content-Type": "application/json; charset=utf-8",
                    // "accept": "application/json; charset=utf-8",
                    // 'Authorization': 'Bearer ' + requestData.token
                },
                async: requestData.async || "false",
                cache: requestData.cache || "false",
                success: requestData.success || {},
                error: requestData.error || {},
                complete: requestData.complete || {},
                fail: requestData.fail || {}
            };
        }

        var getAccessToken = function(username, password, grant_type = "password") {
            var def = $q.defer();

            var requestData = {
                url: apiURL + '/token',
                data: {
                    username: username,
                    password: password,
                    grant_type: grant_type
                },
                // token: Token
            };

            var settings = getSettings(requestData);
            settings.method = "POST";
            $http(settings)
                .success(function(data, status, headers, config) {
                    $log.log('data: ', data);
                    def.resolve(data);
                })
                .error(function(data, status, headers, config) {
                    $log.error(data);
                    def.reject(data);
                });

            return def.promise;
        };

        return {
            getAccessToken: getAccessToken
        };
    }
]);