Controllers/UserAuthController.php

   1 <?php
   2
   3 namespace Controllers;
   4
   5 use Domain\Util;
   6 use Services\Http\IHttpResponse;
   7 use Services\Http\IHttpRequest;
   8 use Services\IFacebookSessionFactory;
   9 use Domain\Entities\IUserStepByStepBuilder;
  10 use Domain\Entities\IUser;
  11 use DataAccess\IUserRepository;
  12 use Facebook\FacebookSession;
  13 use Facebook\FacebookRequest;
  14 use Facebook\GraphUser;
  15 use Facebook\GraphLocation;
  16 use Facebook\FacebookRequestException;
  17
  18 class UserAuthController implements IDivineController
  19 {
  20     private $_response;
  21     private $_request;
  22     private $_facebookSessionFactory;
  23     private $_facebookSession;
  24     private $_facebookRequest;
  25     private $_userRepository;
  26
  27     /* @var $_userStepByStepBuilder Domain\Entities\UserStepByStepBuilder */
  28     private $_userStepByStepBuilder;
  29
  30     //override
  31     public function __construct(
  32         IHttpRequest $request,
  33         IHttpResponse $response,
  34         IFacebookSessionFactory $facebookSessionFactory,
  35         IUserRepository $userRepository,
  36         IUserStepByStepBuilder $userStepByStepBuilder
  37     ) {
  38         $this->_request = $request;
  39         $this->_response = $response;
  40         $this->_facebookSessionFactory = $facebookSessionFactory;
  41         $this->_userRepository = $userRepository;
  42         $this->_userStepByStepBuilder = $userStepByStepBuilder;
  43     }
  44
  45     public function indexAction() {
  46         $token = $this->validateAuthRequest();
  47         $facebookSession = $this->_facebookSessionFactory->createInstance($token);
  48
  49         $this->_facebookSession = $this->isSessionLongLived($facebookSession) ? $facebookSession->getLongLivedSession() : $facebookSession;
  50         $this->_facebookRequest = (new FacebookRequest($this->_facebookSession, 'GET', '/me?fields=hometown,first_name,last_name'))->execute();
  51
  52         $id = $this->_facebookRequest->getGraphObject(GraphUser::className())->getId();
  53
  54         // If the user is not in the DB, create them.
  55         $user = $this->_userRepository->findByFacebookId($id) ?: $this->registerUser();
  56
  57         $this->_response->setHeader('Content-Type', 'application/json')
  58                         ->setBody(json_encode(array('token' => $this->_facebookSession->getToken(), 'expires' => $this->getSessionExpiryTimestamp($this->_facebookSession), 'displayName' => $user->getDisplayName())))
  59                         ->sendResponse();
  60     }
  61
  62     private function validateAuthRequest()
  63     {
  64         $request = $this->_request->get();
  65         $response = $this->_response->setHeader('Content-Type', 'application/json');
  66
  67         if(!isset($request['token']))
  68         {
  69             $response->setBody(json_encode(array('result' => 'error', 'message' => 'missing auth token')))
  70                      ->sendResponse();
  71             die();
  72         }
  73
  74         return $request['token'];
  75     }
  76
  77     private function registerUser()
  78     {
  79         $userProfile = $this->_facebookRequest->getGraphObject(GraphUser::className());
  80
  81         $homeTownPageId = $userProfile->getProperty('hometown')->getProperty('id');
  82         $pageRequest = (new FacebookRequest($this->_facebookSession, 'GET', '/' . $homeTownPageId ))->execute();
  83         $pageLocation = $pageRequest->getGraphObject(GraphLocation::className())->getProperty('location')->cast(GraphLocation::className());
  84
  85         $country = Util::countryNameFromLatLong($pageLocation->getLatitude(), $pageLocation->getLongitude());
  86         $firstName = $userProfile->getFirstName();
  87         $lastName = $userProfile->getLastName();
  88         $facebookId = $userProfile->getId();
  89
  90         //TODO: Is insantiating the VO classes here a good idea?
  91         $newUser = $this->_userStepByStepBuilder->With_Country(new \Domain\VOs\Country($country))
  92                                                 ->With_DisplayName($firstName)
  93                                                 ->With_Name(new \Domain\VOs\Name($firstName, $lastName))
  94                                                 ->With_Tags(array())
  95                                                 ->With_FacebookId($facebookId)
  96                                                 ->build();
  97
  98         $this->_userRepository->save($newUser);
  99
 100         return $newUser;
 101     }
 102
 103     private function isSessionLongLived(FacebookSession $session)
 104     {
 105         return $this->getSessionExpiryTimestamp($session) - time() >= 60;
 106     }
 107
 108     private function getSessionExpiryTimestamp(FacebookSession $session)
 109     {
 110         return $session->getSessionInfo()->getExpiresAt()->format('U');
 111     }
 112 }