wikimedia/mediawiki-extensions-Wikibase

<?php declare( strict_types = 1 );

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

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\ItemAliasesInLanguageRetriever;

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

    private GetLatestItemRevisionMetadata $getLatestRevisionMetadata;
    private ItemAliasesInLanguageRetriever $itemAliasesInLanguageRetriever;
    private GetItemAliasesInLanguageValidator $validator;

    public function __construct(
        GetLatestItemRevisionMetadata $getLatestRevisionMetadata,
        ItemAliasesInLanguageRetriever $itemAliasesInLanguageRetriever,
        GetItemAliasesInLanguageValidator $validator
    ) {
        $this->getLatestRevisionMetadata = $getLatestRevisionMetadata;
        $this->itemAliasesInLanguageRetriever = $itemAliasesInLanguageRetriever;
        $this->validator = $validator;
    }

    /**
     * @throws UseCaseError
     *
     * @throws ItemRedirect
     */
    public function execute( GetItemAliasesInLanguageRequest $request ): GetItemAliasesInLanguageResponse {
        $deserializedRequest = $this->validator->validateAndDeserialize( $request );
        $itemId = $deserializedRequest->getItemId();
        $languageCode = $deserializedRequest->getLanguageCode();

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

        $aliases = $this->itemAliasesInLanguageRetriever->getAliasesInLanguage( $itemId, $languageCode );
        if ( !$aliases ) {
            throw UseCaseError::newResourceNotFound( 'aliases' );
        }

        return new GetItemAliasesInLanguageResponse( $aliases, $lastModified, $revisionId );
    }

}