ImageRedirectConstraint.php

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<?php
namespace MediaWiki\EditPage\Constraint;
 
use MediaWiki\Content\Content;
use MediaWiki\Linker\LinkTarget;
use MediaWiki\Permissions\Authority;
use StatusValue;
 
class ImageRedirectConstraint implements IEditConstraint {
 
    private Content $newContent;
    private LinkTarget $title;
    private Authority $performer;
    private string $result;
 
    public function __construct(
        Content $newContent,
        LinkTarget $title,
        Authority $performer
    ) {
        $this->newContent = $newContent;
        $this->title = $title;
        $this->performer = $performer;
    }
 
    public function checkConstraint(): string {
        // Check isn't simple enough to just repeat when getting the status
        if ( $this->title->getNamespace() === NS_FILE &&
            $this->newContent->isRedirect() &&
            !$this->performer->isAllowed( 'upload' )
        ) {
            $this->result = self::CONSTRAINT_FAILED;
            return self::CONSTRAINT_FAILED;
        }
 
        $this->result = self::CONSTRAINT_PASSED;
        return self::CONSTRAINT_PASSED;
    }
 
    public function getLegacyStatus(): StatusValue {
        $statusValue = StatusValue::newGood();
 
        if ( $this->result === self::CONSTRAINT_FAILED ) {
            $errorCode = $this->performer->getUser()->isRegistered() ?
                self::AS_IMAGE_REDIRECT_LOGGED :
                self::AS_IMAGE_REDIRECT_ANON;
            $statusValue->setResult( false, $errorCode );
        }
 
        return $statusValue;
    }
 
}