TranslatableBundleImportTitleFactory.php

<?php
declare( strict_types = 1 );
 
namespace MediaWiki\Extension\Translate\MessageGroupProcessing;
 
use InvalidArgumentException;
use MediaWiki\Extension\Translate\PageTranslation\PageTitleRenamer;
use MediaWiki\Title\ForeignTitle;
use MediaWiki\Title\ImportTitleFactory;
use MediaWiki\Title\NamespaceInfo;
use MediaWiki\Title\Title;
use MediaWiki\Title\TitleFactory;
 
class TranslatableBundleImportTitleFactory implements ImportTitleFactory {
    private NamespaceInfo $namespaceInfo;
    private PageTitleRenamer $pageTitleRenamer;
    private Title $targetPage;
    private TitleFactory $titleFactory;
    private ForeignTitle $sourcePage;
 
    public function __construct( NamespaceInfo $namespaceInfo, TitleFactory $titleFactory, Title $targetPage ) {
        $this->namespaceInfo = $namespaceInfo;
        $this->targetPage = $targetPage;
        $this->titleFactory = $titleFactory;
    }
 
    public function createTitleFromForeignTitle( ForeignTitle $foreignTitle ): Title {
        if ( !$foreignTitle->isNamespaceIdKnown() ) {
            throw new InvalidArgumentException(
                "Unable to determine namespace for foreign title {$foreignTitle}"
            );
        }
 
        $foreignTitleNamespaceId = $foreignTitle->getNamespaceId();
        $foreignTitleText = $foreignTitle->getText();
 
        if ( !$this->namespaceInfo->exists( $foreignTitleNamespaceId ) ) {
            throw new InvalidArgumentException(
                "The foreign title $foreignTitle has a namespace that does not exist in the current wiki.\n" .
                __CLASS__ . " does not support this functionality yet."
            );
        }
 
        $titleFromForeignTitle = $this->titleFactory->makeTitle( $foreignTitleNamespaceId, $foreignTitleText );
        // Assume that the first title is the source title
        $this->sourcePage ??= $foreignTitle;
        $this->pageTitleRenamer ??= new PageTitleRenamer( $titleFromForeignTitle, $this->targetPage );
 
        return $this->pageTitleRenamer->getNewTitle( $titleFromForeignTitle );
    }
}