fbservice

angular.module('security.service', ['resources.OAuth', 'resources.user', 'resources.calendars']).factory('Security', ['$q', 'OAuth', 'User', 'localStorageService', 'Calendar', function($q, OAuth, User, localStorageService, Calendar) {
  var restoreSession = function() {
    var currentUser = localStorageService.get('user');
    if (currentUser) {
      Calendar.init(currentUser);
      var user = User.setCurrentUser(currentUser);
      return user;
    } else {
      return null;
    }
  };
  var createSession = function() {
    Calendar.init(User.currentUser);
    localStorageService.set('user', User.currentUser);
  };
  var destroySession = function() {
    OAuth.service().then(function(_oauth) {
      _oauth.clearCache('facebook');
    });
    localStorageService.clearAll();
    User.destroyUser();
  };

  var startFBLogin = function() {
    var deferred = $q.defer();
    OAuth.service().then(function(_oauth) {
      _oauth.popup('facebook', {
        cache: true
      }, function(error, result) {
        if (error) {
          deferred.reject(error);
        }
        result.get("/me").done(function(res) {
          deferred.resolve(res);
        });
      });
    });
    return deferred.promise;
  }

  var fbLogin = function(successCb, errorCb) {
    var loginUser = startFBLogin();
    return loginUser.then(function(result) {
      User.setCurrentUser(result);
      createSession();
      successCb(result);
    }, errorCb);
  };

  var service = {
    fbLogin: fbLogin,
    createSession: createSession,
    destroySession: destroySession,
    restoreSession: restoreSession,
    requestCurrentUser: function() {
      if (service.isAuthenticated()) {
        return $q.when(User.currentUser);
      } else {
        return $q.when(restoreSession());
      }
    },
    isAuthenticated: function() {
      return !!User.currentUser;
    }
  };

  return service;
}]);