(function () {
    'use strict';
    var app = angular.module('trainingPortal');
    app.factory('authService', ['$http', 'ngAuthSettings', '$q', 'localStorageService', function ($http, ngAuthSettings, $q, localStorageService) {

        var serviceBase = ngAuthSettings.apiServiceBaseUri;
        var authServiceFactory = {};

        var _authentication = {
            isAuth: false,
            userName: "",
            userRole: "",
            userApplicant: false,
            userTrainer: false,
            userTrainingOrganizer:false
        };

        var _saveRegistration = function (registration) {

            _logOut();

            return $http.post(serviceBase + 'api/account/register', registration).then(function (response) {
                return response;
            });

        };

        var _login = function (loginData) {

            var data = "grant_type=password&username=" + loginData.userName + "&password=" + loginData.password;

            var deferred = $q.defer();

            $http.post(serviceBase + 'token', data, { headers: { 'Content-Type': 'application/x-www-form-urlencoded' } }).success(function (response) {

                localStorageService.set('authorizationData', { token: response.access_token, userName: loginData.userName, userRole: response.userRole });

                _authentication.isAuth = true;
                _authentication.userName = loginData.userName;
                _authentication.userRole = response.userRole;
                if (_authentication.userRole.indexOf("Trainer") != -1)
                    _authentication.userTrainer = true;
                if (_authentication.userRole.indexOf("Training Organizer") != -1)
                    _authentication.userTrainingOrganizer = true;
                if (!_authentication.userTrainer && !_authentication.userTrainingOrganizer)
                    _authentication.userApplicant = true;
                deferred.resolve(response);

            }).error(function (err, status) {
                _logOut();
                deferred.reject(err);
            });

            return deferred.promise;

        };

        var _logOut = function () {

            localStorageService.remove('authorizationData');

            _authentication.isAuth = false;
            _authentication.userName = "";
            _authentication.userRole = "";
            _authentication.userApplicant = false;
            _authentication.userTrainer = false;
            _authentication.userTrainingOrganizer = false;

        };

        var _fillAuthData = function () {

            var authData = localStorageService.get('authorizationData');
            if (authData) {
                _authentication.isAuth = true;
                _authentication.userName = authData.userName;
                _authentication.userRole = authData.userRole;
                if (_authentication.userRole.indexOf("Trainer") != -1)
                    _authentication.userTrainer = true;
                if (_authentication.userRole.indexOf("Training Organizer") != -1)
                    _authentication.userTrainingOrganizer = true;
                if (!_authentication.userTrainer && !_authentication.userTrainingOrganizer)
                    _authentication.userApplicant = true;
            }

        }

        authServiceFactory.saveRegistration = _saveRegistration;
        authServiceFactory.login = _login;
        authServiceFactory.logOut = _logOut;
        authServiceFactory.fillAuthData = _fillAuthData;
        authServiceFactory.authentication = _authentication;

        return authServiceFactory;
    }]);
})();