limoncello-php-dist / passport

                    $this->logDebug('Handling resource owner password grant.');

                    $response = $this->passIssueToken($parameters, $determinedClient);

                    break;

                case GrantTypes::CLIENT_CREDENTIALS:

                    $this->logDebug('Handling client credentials grant.');

                    if ($determinedClient === null) {

                        $this->logDebug('Client identification failed.');

                        throw new OAuthTokenBodyException(OAuthTokenBodyException::ERROR_INVALID_CLIENT);

                    }

                    $response = $this->clientIssueToken($parameters, $determinedClient);

                    break;

                case GrantTypes::REFRESH_TOKEN:

                    $this->logDebug('Handling refresh token grant.');

                    if ($determinedClient === null) {

                    }

                    $response = $this->clientIssueToken($parameters, $determinedClient);

                    break;

                case GrantTypes::REFRESH_TOKEN:

                    $this->logDebug('Handling refresh token grant.');

                    if ($determinedClient === null) {

                        $this->logDebug('Client identification failed.');

                        throw new OAuthTokenBodyException(OAuthTokenBodyException::ERROR_INVALID_CLIENT);

                    }

                    $response = $this->refreshIssueToken($parameters, $determinedClient);

                    break;

                default:

                    $this->logDebug('Unknown grant type.', ['grant_type' => $grantType]);

                    throw new OAuthTokenBodyException(OAuthTokenBodyException::ERROR_UNSUPPORTED_GRANT_TYPE);