ChangeTagsConstraint.php

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<?php
namespace MediaWiki\EditPage\Constraint;
 
use ChangeTags;
use MediaWiki\Permissions\Authority;
use StatusValue;
 
class ChangeTagsConstraint implements IEditConstraint {
 
    private $performer;
 
    private $tags;
 
    private $result;
 
    public function __construct(
        Authority $performer,
        array $tags
    ) {
        $this->performer = $performer;
        $this->tags = $tags;
    }
 
    public function checkConstraint(): string {
        if ( !$this->tags ) {
            $this->result = self::CONSTRAINT_PASSED;
            return self::CONSTRAINT_PASSED;
        }
 
        // TODO inject a service once canAddTagsAccompanyingChange is moved to a
        // service as part of T245964
        $changeTagStatus = ChangeTags::canAddTagsAccompanyingChange(
            $this->tags,
            $this->performer,
            false
        );
 
        if ( $changeTagStatus->isOK() ) {
            $this->result = self::CONSTRAINT_PASSED;
            return self::CONSTRAINT_PASSED;
        }
 
        $this->result = $changeTagStatus; // The same status object is returned
        return self::CONSTRAINT_FAILED;
    }
 
    public function getLegacyStatus(): StatusValue {
        if ( $this->result === self::CONSTRAINT_PASSED ) {
            $statusValue = StatusValue::newGood();
        } else {
            $statusValue = $this->result;
            $statusValue->value = self::AS_CHANGE_TAG_ERROR;
        }
        return $statusValue;
    }
 
}