oauth2_client-8.x-3.x-dev/src/Plugin/Oauth2GrantType/RefreshToken.php

<?php

declare(strict_types=1);

namespace Drupal\oauth2_client\Plugin\Oauth2GrantType;

use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\Core\Utility\Error;
use Drupal\oauth2_client\Attribute\Oauth2GrantType;
use Drupal\oauth2_client\Plugin\Oauth2Client\Oauth2ClientPluginInterface;
use League\OAuth2\Client\Provider\Exception\IdentityProviderException;
use League\OAuth2\Client\Token\AccessTokenInterface;

/**
 * Handles Client Credential Grants for the OAuth2 Client module..
 */
#[Oauth2GrantType(
  id: 'refresh_token',
  label: new TranslatableMarkup('Refresh Token Grant'),
  description: new TranslatableMarkup('Makes Refresh Token grant requests.'),
)]
class RefreshToken extends Oauth2GrantTypePluginBase {

  /**
   * {@inheritdoc}
   */
  public function getAccessToken(Oauth2ClientPluginInterface $clientPlugin): ?AccessTokenInterface {
    $accessToken = $clientPlugin->retrieveAccessToken();
    if ($accessToken instanceof AccessTokenInterface) {
      $refreshToken = $accessToken->getRefreshToken();
      $provider = $clientPlugin->getProvider();
      try {
        $newAccessToken = $provider->getAccessToken('refresh_token', [
          'refresh_token' => $refreshToken,
        ]);
        $clientPlugin->storeAccessToken($newAccessToken);
        return $newAccessToken;
      }
      catch (IdentityProviderException $e) {
        // Failed to get a new access token.
        Error::logException($this->logger, $e);
      }
    }
    return NULL;
  }

}