public function authenticate(TokenInterface $token)
{
if (!$this->supports($token)) {
return null;
}
$user = $token->getUser();
if ($user instanceof UserInterface) {
$this->userChecker->checkPostAuth($user);
$newToken = new FacebookUserToken($this->providerKey, $user, $user->getRoles(), $token->getAccessToken());
$newToken->setAttributes($token->getAttributes());
return $newToken;
}
if (!is_null($token->getAccessToken())) {
$this->facebook->setAccessToken($token->getAccessToken());
}
if ($uid = $this->facebook->getUser()) {
$newToken = $this->createAuthenticatedToken($uid, $token->getAccessToken());
$newToken->setAttributes($token->getAttributes());
return $newToken;
}
throw new AuthenticationException('The Facebook user could not be retrieved from the session.');
}