wikimedia/mediawiki-extensions-Wikibase

<?php declare( strict_types = 1 );

namespace Wikibase\Repo\RestApi\Application\UseCases\GetItemLabels;

use Wikibase\Repo\RestApi\Application\UseCases\GetLatestItemRevisionMetadata;
use Wikibase\Repo\RestApi\Application\UseCases\ItemRedirect;
use Wikibase\Repo\RestApi\Application\UseCases\UseCaseError;
use Wikibase\Repo\RestApi\Domain\Services\ItemLabelsRetriever;

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

    private GetLatestItemRevisionMetadata $getLatestRevisionMetadata;
    private ItemLabelsRetriever $itemLabelsRetriever;
    private GetItemLabelsValidator $validator;

    public function __construct(
        GetLatestItemRevisionMetadata $getLatestRevisionMetadata,
        ItemLabelsRetriever $itemLabelsRetriever,
        GetItemLabelsValidator $validator
    ) {
        $this->getLatestRevisionMetadata = $getLatestRevisionMetadata;
        $this->itemLabelsRetriever = $itemLabelsRetriever;
        $this->validator = $validator;
    }

    /**
     * @throws UseCaseError
     * @throws ItemRedirect
     */
    public function execute( GetItemLabelsRequest $request ): GetItemLabelsResponse {
        $itemId = $this->validator->validateAndDeserialize( $request )->getItemId();

        [ $revisionId, $lastModified ] = $this->getLatestRevisionMetadata->execute( $itemId );

        return new GetItemLabelsResponse(
            // @phan-suppress-next-line PhanTypeMismatchArgumentNullable Item validated and exists
            $this->itemLabelsRetriever->getLabels( $itemId ),
            $lastModified,
            $revisionId,
        );
    }
}