Angular services for ASP.NET Web API

authService.js

/// <reference path="../app.js" />

'use strict';
app.factory('authService', ['$http', '$q', '$log', 'apiBaseUrl', 'localStorageService', function ($http, $q, $log, apiBaseUrl, localStorageService) {
    var setupHttp = function() {
        $http.defaults.headers.common["Content-Type"] = "application/x-www-form-urlencoded";
        $http.defaults.headers.common['Authorization'] = "Bearer " + authentication.access_token;
    }
    
    var authServiceFactory = {};

    var authentication = {};
    
    var saveAuthentication = function(data) {
        localStorageService.setObject("authentication", data);
        authentication = data;
        setupHttp();
    };
    
    var loadAuthentication = function() {
        authentication = localStorageService.getObject("authentication");
        setupHttp();
    };
    
    var clearAuthentication = function() {
        authentication = {};
        saveAuthentication({});
        $http.defaults.headers.common['Authorization'] = "";
    };

    authServiceFactory.register = function(email, password, confirmPassword) {
        var registration = {
            Email: email,
            Password: password,
            ConfirmPassword: confirmPassword
        };
        
        return $http.post(apiBaseUrl + 'api/account/register', registration).then(function (response) {
            $log.log("Register response:", response);
        });
    };

    authServiceFactory.login = function(email, password) {
        return $http({method: 'POST', url: apiBaseUrl + 'token', data: { username: email, password: password, grant_type: 'password' }, transformRequest: function (obj) {
            var str = [];
            for (var p in obj) {
                // clean up some of the object values because the API was getting angry sometimes
                str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));
            }
            return str.join("&");
        }}).success(function (data, status, headers, config) {
            saveAuthentication(data);
        }).error(function (data, status, headers, config) {
            clearAuthentication();
        });
    };
    
    authServiceFactory.logout = function() {
        clearAuthentication();
    }; 
    
    authServiceFactory.isAuthenticated = function() {
        return authentication && authentication.userName;
    };
    
    authServiceFactory.getApiUrl = function(url) {
        setupHttp();
        return apiBaseUrl + url;
    }
    
    authServiceFactory.authentication = authentication;
    
    loadAuthentication();
    
    return authServiceFactory;
}]);

localStorageService.js

/// <reference path="../app.js" />

'use strict';
app.factory('localStorageService', ['$window', function($window) {
  return {
    set: function(key, value) {
      $window.localStorage[key] = value;
    },
    get: function(key, defaultValue) {
      return $window.localStorage[key] || defaultValue;
    },
    setObject: function(key, value) {
      $window.localStorage[key] = JSON.stringify(value);
    },
    getObject: function(key) {
      return JSON.parse($window.localStorage[key] || '{}');
    }
  };
}]);