AccidentalRecreationConstraint.php

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<?php
namespace MediaWiki\EditPage\Constraint;
 
use MediaWiki\Logging\DatabaseLogEntry;
use MediaWiki\Logging\LogFormatterFactory;
use MediaWiki\Logging\LogPage;
use MediaWiki\Message\Message;
use MediaWiki\PageEdit\PageEditStatus;
use MediaWiki\Title\Title;
use Wikimedia\Message\MessageSpecifier;
use Wikimedia\Message\MessageValue;
use Wikimedia\Rdbms\IConnectionProvider;
use Wikimedia\Rdbms\SelectQueryBuilder;
 
class AccidentalRecreationConstraint extends EditConstraint {
 
    public function __construct(
        private readonly IConnectionProvider $connectionProvider,
        private readonly LogFormatterFactory $logFormatterFactory,
        private readonly Title $title,
        private readonly bool $allowRecreation,
        private readonly ?string $startTime,
        private readonly ?MessageSpecifier $submitButtonLabel,
    ) {
    }
 
    public function checkConstraint(): PageEditStatus {
        if ( $this->allowRecreation ) {
            return PageEditStatus::newGood();
        }
        $deletion = $this->getDeletionSinceLastEdit();
        if ( $deletion ) {
            if ( $this->submitButtonLabel ) {
                $logFormatter = $this->logFormatterFactory->newFromEntry( $deletion );
                $username = $deletion->isDeleted( LogPage::DELETED_USER )
                    ? MessageValue::new( 'rev-deleted-user' )
                    : $deletion->getPerformerIdentity()->getName();
                $commentHtml = $logFormatter->getComment();
 
                return PageEditStatus::newGood( self::AS_ARTICLE_WAS_DELETED )
                    ->setOK( false )
                    ->warning(
                        $commentHtml === ''
                            ? 'edit-constraint-confirmrecreate-noreason'
                            : 'edit-constraint-confirmrecreate',
                        $username,
                        Message::rawParam( $commentHtml ),
                        $this->submitButtonLabel,
                    );
            } else {
                return PageEditStatus::newGood( self::AS_ARTICLE_WAS_DELETED )
                    ->setOK( false )
                    ->warning( 'deletedwhileediting' );
            }
        }
        return PageEditStatus::newGood();
    }
 
    private function getDeletionSinceLastEdit(): ?DatabaseLogEntry {
        if ( !$this->title->exists() && $this->title->hasDeletedEdits() ) {
            $lastDelete = $this->getLastDelete();
            if ( $lastDelete && $lastDelete->getTimestamp() > $this->startTime ) {
                return $lastDelete;
            }
        }
        return null;
    }
 
    private function getLastDelete(): ?DatabaseLogEntry {
        $dbr = $this->connectionProvider->getReplicaDatabase();
        $row = DatabaseLogEntry::newSelectQueryBuilder( $dbr )
            ->where( [
                'log_namespace' => $this->title->getNamespace(),
                'log_title' => $this->title->getDBkey(),
                'log_type' => 'delete',
                'log_action' => 'delete',
            ] )
            ->orderBy( [ 'log_timestamp', 'log_id' ], SelectQueryBuilder::SORT_DESC )
            ->caller( __METHOD__ )
            ->fetchRow();
 
        return $row ? DatabaseLogEntry::newFromRow( $row ) : null;
    }
 
}