wikimedia/mediawiki-extensions-Wikibase

<?php declare( strict_types=1 );

namespace Wikibase\Repo\RestApi\Infrastructure;

use Exception;
use InvalidArgumentException;
use Swaggest\JsonDiff\JsonPatch;
use Swaggest\JsonDiff\PatchTestOperationFailedException;
use Swaggest\JsonDiff\PathException;
use Wikibase\Repo\RestApi\Domain\Services\Exceptions\PatchPathException;
use Wikibase\Repo\RestApi\Domain\Services\Exceptions\PatchTestConditionFailedException;
use Wikibase\Repo\RestApi\Domain\Services\JsonPatcher;

/**
 * @license GPL-2.0-or-later
 */
class JsonDiffJsonPatcher implements JsonPatcher {

    /**
     * @inheritDoc
     */
    public function patch( array $target, array $patch ) {
        try {
            $patchDocument = JsonPatch::import( $patch );
        } catch ( Exception $e ) {
            throw new InvalidArgumentException( 'Invalid patch' );
        }

        $patchDocument->setFlags( JsonPatch::TOLERATE_ASSOCIATIVE_ARRAYS );

        try {
            $patchDocument->apply( $target );
        } catch ( PatchTestOperationFailedException $e ) {
            throw new PatchTestConditionFailedException(
                $e->getMessage(),
                (array)$e->getOperation(),
                $e->getActualValue()
            );
        } catch ( PathException $e ) {
            throw new PatchPathException( $e->getMessage(), $e->getField(), $e->getOpIndex() );
        }

        // TODO investigate. JsonPatch (sometimes) adds/replaces new values as object, not associative array
        return self::convertObjectsToArray( $target );
    }

    /**
     * @param mixed $serialization
     *
     * @return mixed
     */
    private static function convertObjectsToArray( $serialization ) {
        if ( !( is_object( $serialization ) || is_array( $serialization ) ) ) {
            return $serialization;
        }

        $output = [];
        foreach ( $serialization as $key => $value ) {
            if ( is_array( $value ) ) {
                $output[ $key ] = self::convertObjectsToArray( $value );
            } elseif ( is_object( $value ) ) {
                $output[ $key ] = self::convertObjectsToArray( (array)$value );
            } else {
                $output[ $key ] = $value;
            }
        }
        return $output;
    }

}