wikimedia/mediawiki-extensions-Wikibase

<?php declare( strict_types=1 );

namespace Wikibase\Repo\RestApi\Application\UseCaseRequestValidation;

use LogicException;
use Wikibase\Repo\RestApi\Application\UseCases\UseCaseError;
use Wikibase\Repo\RestApi\Application\Validation\JsonPatchValidator;

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

    private JsonPatchValidator $validator;

    public function __construct( JsonPatchValidator $validator ) {
        $this->validator = $validator;
    }

    /**
     * @throws UseCaseError
     */
    public function validateAndDeserialize( PatchRequest $request ): array {
        $validationError = $this->validator->validate( $request->getPatch() );
        if ( $validationError ) {
            $context = $validationError->getContext();
            switch ( $validationError->getCode() ) {
                case JsonPatchValidator::CODE_INVALID:
                    throw UseCaseError::newInvalidValue( '/patch' );

                case JsonPatchValidator::CODE_INVALID_OPERATION:
                    $operation = $context[JsonPatchValidator::CONTEXT_OPERATION];
                    $opIndex = Utils::getIndexOfValueInSerialization( $operation, $request->getPatch() );
                    throw UseCaseError::newInvalidValue( "/patch/$opIndex/op" );

                case JsonPatchValidator::CODE_INVALID_FIELD_TYPE:
                    $opField = $context[JsonPatchValidator::CONTEXT_FIELD];
                    $operation = $context[JsonPatchValidator::CONTEXT_OPERATION];
                    $opIndex = Utils::getIndexOfValueInSerialization( $operation, $request->getPatch() );
                    throw UseCaseError::newInvalidValue( "/patch/$opIndex/$opField" );

                case JsonPatchValidator::CODE_MISSING_FIELD:
                    $opField = $context[JsonPatchValidator::CONTEXT_FIELD];
                    $operation = $context[JsonPatchValidator::CONTEXT_OPERATION];
                    $opIndex = Utils::getIndexOfValueInSerialization( $operation, $request->getPatch() );
                    throw UseCaseError::newMissingField( "/patch/$opIndex", $opField );

                default:
                    throw new LogicException( "Unknown validation error code: {$validationError->getCode()}" );
            }
        }

        return $request->getPatch();
    }

}