<?php
  
  namespace FootyRoom\Services\Registration;
  
  use FootyRoom\Config;
  use FootyRoom\User\AvatarCreator;
  use Illuminate\Contracts\Auth\Guard;
  use FootyRoom\Services\Auth\FacebookLogin;
  use FootyRoom\Repositories\IUserRepository;
  use Illuminate\Contracts\Events\Dispatcher;
  use Facebook\Exceptions\FacebookSDKException;
  use FootyRoom\Services\Registration\ActivationKeyMailer;
  
  class FacebookRegistration extends Registration
  {
      /**
       * @var string
       */
      public $fbtoken;
  
      /**
       * @var string
       */
      public $facebookId;
  
      /**
       * @var \FootyRoom\Services\Auth\FacebookLogin
       */
      protected $fbLogin;
  
      /**
       * @var \Facebook\GraphNodes\GraphUser
       */
      protected $fbMe;
  
      /**
       * @var \FootyRoom\Repositories\UserRepository
       */
      protected $userRepo;
  
      /**
       * @var \FootyRoom\Services\Registration\ActivationKeyMailer
       */
      protected $activationKeyMailer;
  
      /**
       * @var \Illuminate\Contracts\Auth\Guard
       */
      protected $auth;
  
      /**
       * @var \Illuminate\Contracts\Events\Dispatcher;
       */
      protected $events;
  
      /**
       * Constructor.
       *
       * @param array                                                $userData
       * @param \FootyRoom\Repositories\IUserRepository              $userRepo
       * @param \FootyRoom\Services\Registration\ActivationKeyMailer $activationKeyMailer
       * @param \Illuminate\Contracts\Auth\Guard                     $auth
       * @param \FootyRoom\Config                                    $config
       * @param \Illuminate\Contracts\Events\Dispatcher              $events
       */
      public function __construct(
          array $userData,
          IUserRepository $userRepo,
          ActivationKeyMailer $activationKeyMailer,
          Guard $auth,
          Config $config,
          Dispatcher $events
      ) {
          $this->userRepo = $userRepo;
          $this->activationKeyMailer = $activationKeyMailer;
          $this->auth = $auth;
          $this->config = $config;
          $this->events = $events;
  
          $this->fbtoken = $userData['fbtoken'];
  
          $this->fbLogin = new FacebookLogin($config, $auth, $userRepo);
          $this->fbLogin->setToken($this->fbtoken);
  
          try {
              $this->fbMe = $this->fbLogin->getMe();
          } catch (FacebookSDKException $e) {
              $this->errors = ['fbtoken' => ['auth']];
  
              return;
          }
  
          $this->facebookId = $this->fbMe->getId();
          $userData['email'] = $this->fbMe->getEmail();
          $userData['fullName'] = $this->fbMe->getName();
          $userData['status'] = 'newborn';
  
          $this->init($userData);
      }
  
      public function validate(): bool
      {
          if (isset($this->error['fbtoken'])) {
              return false;
          }
  
          $isValid = parent::validate();
  
          if (isset($this->errors['email'])) {
              $this->errors['fbtoken'] = $this->errors['email'];
              unset($this->errors['email']);
          }
  
          return $isValid;
      }
  
      public function register()
      {
          parent::register();
  
          $this->fbLogin->associateWith($this->userId);
  
          // Fetch avatar from Facebook.
          if (!$this->fbMe->getPicture()->isSilhouette()) {
              AvatarCreator::create($this->fbMe->getPicture()->getUrl(), $this->userId);
          }
  
          // Automatically login person who has signed up.
          $this->auth->loginUsingId($this->userId);
      }
  }