wikimedia/mediawiki-extensions-Wikibase

<?php

namespace Wikibase\Repo\Normalization;

use DataValues\DataValue;
use DataValues\StringValue;
use Psr\Log\LoggerInterface;
use Wikibase\Lib\Normalization\DataValueNormalizer;
use Wikibase\Repo\CachingCommonsMediaFileNameLookup;

/**
 * @license GPL-2.0-or-later
 */
class CommonsMediaValueNormalizer implements DataValueNormalizer {

    /** @var CachingCommonsMediaFileNameLookup */
    private $fileNameLookup;

    /** @var LoggerInterface */
    private $logger;

    public function __construct(
        CachingCommonsMediaFileNameLookup $fileNameLookup,
        LoggerInterface $logger
    ) {
        $this->fileNameLookup = $fileNameLookup;
        $this->logger = $logger;
    }

    public function normalize( DataValue $value ): DataValue {
        if ( !( $value instanceof StringValue ) ) {
            $this->logger->info(
                __METHOD__ . ': cannot normalize non-string value {value}',
                [
                    'value' => $value->getArrayValue(),
                ]
            );
            return $value;
        }
        $fileName = $value->getValue();
        $normalized = $this->fileNameLookup->lookupFileName( $fileName );
        if ( $normalized !== null ) {
            return new StringValue( $normalized );
        } else {
            $this->logger->info(
                __METHOD__ . ': cannot normalize Commons file name {fileName}',
                [ 'fileName' => $fileName ]
            );
            return $value;
        }
    }

}