authService.js

angular.module('authService', [])



.factory('Auth', function($http, $q, AuthToken) {


    var authFactory = {};


    authFactory.login = function(username, password) {

        return $http.post('/api/login', {
            username: username,
            password: password
        })
        .success(function(data) {
            AuthToken.setToken(data.token);
            return data;
        })
    }

    authFactory.logout = function() {
        AuthToken.setToken();
    }

    authFactory.isLoggedIn = function() {
        if(AuthToken.getToken())
                return true;
        else
            return false;
    }

    authFactory.getUser = function() {
        if(AuthToken.getToken())
            return $http.get('/api/me');
        else
            return $q.reject({ message: "User has no token"});

    }


    return authFactory;

})


.factory('AuthToken', function($window) {

    var authTokenFactory = {};

    authTokenFactory.getToken = function() {
        return $window.localStorage.getItem('token');
    }

    authTokenFactory.setToken = function(token) {

        if(token)
            $window.localStorage.setItem('token', token);
        else
            $window.localStorage.removeItem('token');

    }

    return authTokenFactory;

});


.factory('AuthInterceptor', function($q, $location, AuthToken) {

    var interceptorFactory = {};


    interceptorFactory.request = function(config) {

        var token = AuthToken.getToken();

        if(token) {

            config.headers['x-access-token'] = token;

        }

        return config;

    };

    interceptorFactory.responseError = function(response) {
        if(response.status == 403)
            $location.path('/login');
        return $q.reject(response);
    }


    return interceptorFactory;
});