FilterMiddleware.php

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<?php
 
namespace MediaWiki\Notification\Middleware;
 
use MediaWiki\Notification\NotificationEnvelope;
use MediaWiki\Notification\NotificationMiddlewareInterface;
use MediaWiki\Notification\NotificationsBatch;
 
abstract class FilterMiddleware implements NotificationMiddlewareInterface {
 
    abstract protected function filter( NotificationEnvelope $envelope ): FilterMiddlewareAction;
 
    public function handle( NotificationsBatch $batch, callable $next ): void {
        $next();
        $batch->filter( function ( NotificationEnvelope $envelope ) {
            return $this->filter( $envelope ) === FilterMiddlewareAction::KEEP;
        } );
    }
 
}