Angular Auth (work-in-progress)

angular-auth.js

/**
 * @license Angular Auth
 * (c) 2012 Witold Szczerba
 * License: MIT
 */
angular.module('angular-auth', [])

  /**
   * Holds all the requests which failed due to 401 response,
   * so they can be re-requested in the future, once login is completed.
   */
  .factory('requests401', ['$injector', function($injector) {
    var buffer = [];
    var $http; //initialized later because of circular dependency problem
    function retry(config, deferred) {
      $http = $http || $injector.get('$http');
      $http(config).then(function(response) {
        deferred.resolve(response);
      });
    }
  
    return {
      add: function(config, deferred) {
        buffer.push({
          config: config, 
          deferred: deferred
        });
      },
      retryAll: function() {
        for (var i = 0; i < buffer.length; ++i) {
          retry(buffer[i].config, buffer[i].deferred);
        }
        buffer = [];
      }
    }
  }])

  /**
   * $http interceptor.
   * On 401 response - it stores the request and broadcasts 'event:angular-auth-loginRequired'.
   */
  .config(function($httpProvider) {
    var interceptor = function($rootScope, $q, requests401) {
      function success(response) {
        return response;
      }
 
      function error(response) {
        var status = response.status;
 
        if (status == 401) {
          var deferred = $q.defer();
          requests401.add(response.config, deferred);
          $rootScope.$broadcast('event:angular-auth-loginRequired');
          return deferred.promise;
        }
        // otherwise
        return $q.reject(response);
      }
 
      return function(promise) {
        return promise.then(success, error);
      }
 
    };
    $httpProvider.responseInterceptors.push(interceptor);
  });

Original paper:
http://www.espeo.pl/2012/02/26/authentication-in-angularjs-application

I think this may be a great thing, perfect for my project! Do you happen to have any examples of implementing this?

Any chance you would want to publish this through Bower, the new Twitter package manager?

Here's an example of how I packaged up Mocha.

https://github.com/Iristyle/bower-mocha

FYI - I did make this available here for now...
https://github.com/Iristyle/bower-angularAuth

If you decide to take this on and maintain it, let me know.