FacebookProvider

FacebookProvider.php

class FacebookProvider implements UserProviderInterface
{
    /**
     * @var \Facebook
     */
    protected $facebook;
    protected $userManager;
    protected $validator;

    public function __construct(BaseFacebook $facebook, $userManager, $validator)
    {
        $this->facebook = $facebook;
        $this->userManager = $userManager;
        $this->validator = $validator;
    }

    public function supportsClass($class)
    {
        return $this->userManager->supportsClass($class);
    }

    /**
     * Find user by email
     *
     * @param string $email
     *
     * @return mixed
     */
    public function findUserByEmail($email)
    {
        return $this->userManager->findUserBy(array('email' => $email));
    }

    public function findUserByFbId($fbId)
    {
        return $this->userManager->findUserBy(array('facebookId' => $fbId));
    }

    public function loadUserByUsername($username)
    {
        // we don't want to use this function, because
        // we don't store the FbId in database
        // $user = $this->findUserByFbId($username);
        // 
        $user = null;
        try {
            $fbdata = $this->facebook->api('/me');
        } catch (FacebookApiException $e) {
            $fbdata = null;
        }

        if (!empty($fbdata)) {
            // check user : find user with email
            if (null === $user) {
                $user = $this->findUserByEmail($fbdata['email']);
            }
            // new user : redirect to registration form
            if (null === $user) {
                $user = new User();
                $user->setUsername($fbdata['first_name'][0].$fbdata['last_name']);
                $user->setEnabled(true);
                $user->setPassword('');
            }
 
            // TODO use http://developers.facebook.com/docs/api/realtime
            $user->setFBData($fbdata);
 
            if (count($this->validator->validate($user, 'Facebook'))) {
                // TODO: the user was found obviously, but doesnt match our expectations, do something smart
                throw new UsernameNotFoundException('The facebook user could not be stored');
            }
            // $this->userManager->updateUser($user);
        }
 
        if (empty($user)) {
            throw new UsernameNotFoundException('The user is not authenticated on facebook');
        }
 
        return $user;
    }


    public function refreshUser(UserInterface $user)
    {
        if (!$this->supportsClass(get_class($user)) || !$user->getFacebookId()) {
            throw new UnsupportedUserException(sprintf('Instances of "%s" are not supported.', get_class($user)));
        }

        return $this->loadUserByUsername($user->getFacebookId());
    }
}