ChatTypeFilter.php

<?php
 
namespace Bitrix\Im\V2\Controller\Filter;
 
use Bitrix\Im\V2\Chat\ChatError;
use Bitrix\Main\Engine\ActionFilter\Base;
use Bitrix\Main\Event;
use Bitrix\Main\EventResult;
 
class ChatTypeFilter extends Base
{
    private array $types;
    private bool $isAllowed;
 
    public function __construct(array $types, bool $isAllowed = true)
    {
        parent::__construct();
        $this->types = $types;
        $this->isAllowed = $isAllowed;
    }
 
    public function onBeforeAction(Event $event)
    {
        $chat = $this->getAction()->getArguments()['chat'] ?? null;
        if ($this->isAllowed)
        {
            foreach ($this->types as $type)
            {
                if ($chat instanceof $type)
                {
                    return null;
                }
            }
 
            $this->addError(new ChatError(ChatError::WRONG_TYPE));
 
            return new EventResult(EventResult::ERROR, null, null, $this);
        }
 
        foreach ($this->types as $type)
        {
            if ($chat instanceof $type)
            {
                $this->addError(new ChatError(ChatError::WRONG_TYPE));
 
                return new EventResult(EventResult::ERROR, null, null, $this);
            }
        }
 
        return null;
    }
}