EditPermissionsHandler.php

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<?php

namespace Elgg\Comments;

class EditPermissionsHandler {
    
    public function __invoke(\Elgg\Event $event) {
        $entity = $event->getEntityParam();
        $user = $event->getUserParam();
        
        if (!$entity instanceof \ElggComment || !$user instanceof \ElggUser) {
            return;
        }
        
        $return = function () use ($entity, $user) {
            return $entity->owner_guid === $user->guid;
        };
        
        $content = $entity->getContainerEntity();
        if (!$content instanceof \ElggEntity) {
            return $return();
        }
        
        $container = $content->getContainerEntity();
        
        // use default access for group editors to moderate comments
        if ($container instanceof \ElggGroup && $container->canEdit($user->guid)) {
            return;
        }
        
        return $return();
    }
}