wikimedia/mediawiki-extensions-Wikibase

<?php declare( strict_types=1 );

namespace Wikibase\Repo\RestApi\Application\UseCaseRequestValidation;

use Wikibase\Repo\RestApi\Application\UseCases\UseCaseError;
use Wikibase\Repo\RestApi\Application\Validation\LanguageCodeValidator;

/**
 * @license GPL-2.0-or-later
 */
class LanguageCodeRequestValidatingDeserializer {

    private LanguageCodeValidator $languageCodeValidator;

    public function __construct( LanguageCodeValidator $languageCodeValidator ) {
        $this->languageCodeValidator = $languageCodeValidator;
    }

    /**
     * @throws UseCaseError
     */
    public function validateAndDeserialize( LanguageCodeRequest $request ): string {
        $validationError = $this->languageCodeValidator->validate( $request->getLanguageCode() );
        if ( $validationError ) {
            throw new UseCaseError(
                UseCaseError::INVALID_PATH_PARAMETER,
                "Invalid path parameter: 'language_code'",
                [ UseCaseError::CONTEXT_PARAMETER => 'language_code' ]
            );
        }
        return $request->getLanguageCode();
    }

}