(function () {
    'use strict';
     angular
        .module('hyperion')
        .factory('AuthenticationService', ['$rootScope', '$http', '$sessionStorage', 'jwtHelper', 'CONFIG', 'sysClock', function($rootScope, $http, $sessionStorage, jwtHelper, CONFIG, sysClock) {
            var Login = function(email, password, callback) {

                var request = {"query": "mutation{auth(email: \"" + email + "\", password: \"" + password + "\")}"};
                $http({
                    method: 'POST',
                    url: CONFIG.APP_API,
                    data: request,
                    headers: {"Content-Type": "application/json", 'Accept': 'application/json'}
                }).then(
                    function(response){ // resolve
                        if(response.data.errors) {
                            callback(1);
                        } else {
                            var decodedToken = jwtHelper.decodeToken(response.data.data.auth.accessToken);

                            $sessionStorage.currentUser = {
                                auth_token_str: response.data.data.auth.accessToken,
                                auth_token_iat: response.data.data.auth.expiresAt,
                                auth_token_exp: decodedToken.exp,
                                refr_token_str: response.data.data.auth.refreshToken,
                                session:        decodedToken.session,
                                email:          decodedToken.user_email,
                                user_id:		decodedToken.sub,
                                company_id:     decodedToken.user_company_id,
                                company_name:   decodedToken.user_company_name,
                                title:          decodedToken.user_title,
                                first_name:     decodedToken.user_fname,
                                last_name:      decodedToken.user_lname,
                                mobile_number:  decodedToken.user_mobile_number,
                                mobile_dial:    decodedToken.user_mobile_dial,
                                last_signin:    decodedToken.user_last_signin,
                                project:        decodedToken.project,
                                ismanager:      decodedToken.ismanager,
                                issuper:        decodedToken.issuper,
                                smallMenu:      false,
                                temperature:    decodedToken.temperature,
                                timerange:      CONFIG.TIMERANGE,
                                locale:         decodedToken.locale,
                                wshost:         decodedToken.wshost
                            };

                            /////////////////////////////////////////////////

                            // set primary project ID
                            $rootScope.project = decodedToken.project;

                            // add jwt token to auth header for all requests made by the $http service
                            $http.defaults.headers.common.Authorization = 'Bearer ' + response.data.data.auth.accessToken;

                            // set user timezone
                            sysClock.setTimeZone(moment.tz.guess());

                            // set user clock
                            sysClock.setClock('12h');

                            // set authentication flag
                            $sessionStorage.isAuthenticated = true;

                            // execute callback with true to indicate successful login
                            callback(0); // success
                        }

                    },function() { // failure
                        callback(500); // server in trouble...
                    });
            };

            var Logout = function(callback) {
                // remove user from local storage and clear http auth header
                $sessionStorage.isAuthenticated = false;
                delete $sessionStorage.currentUser;
                $http.defaults.headers.common.Authorization = '';
                if(callback && typeof callback === 'function'){
                    callback(true);
                }
            };

            return {
                isAuthenticated: function () {
                    return $sessionStorage.isAuthenticated&&(parseInt(moment.utc().unix())<parseInt($sessionStorage.currentUser.auth_token_exp));
                },
                Login : Login,
                Logout : Logout
            };
        }]);
})();