CheckChatAccess.php

См. документацию.

<?php
 
namespace Bitrix\Im\V2\Controller\Filter;
 
use Bitrix\Im\V2\Chat;
use Bitrix\Im\V2\Message;
use Bitrix\Im\V2\MessageCollection;
use Bitrix\Im\V2\Result;
use Bitrix\Main\Engine\ActionFilter\Base;
use Bitrix\Main\Event;
use Bitrix\Main\EventResult;
 
class CheckChatAccess extends Base
{
    public function onBeforeAction(Event $event)
    {
        $checkResult = $this->checkAccess();
        if (!$checkResult->isSuccess())
        {
            $this->addError($checkResult->getErrors()[0] ?? new Chat\ChatError(Chat\ChatError::ACCESS_DENIED));
 
            return new EventResult(EventResult::ERROR, null, null, $this);
        }
 
        return null;
    }
 
    private function checkAccess(): Result
    {
        foreach ($this->getAction()->getArguments() as $argument)
        {
            if ($argument instanceof Message)
            {
                return $argument->checkAccess();
            }
            if ($argument instanceof MessageCollection)
            {
                return $this->checkAccessToMessages($argument);
            }
            if ($argument instanceof Chat)
            {
                return $argument->checkAccess();
            }
        }
 
        return new Result();
    }
 
    private function checkAccessToMessages(MessageCollection $messages): Result
    {
        foreach ($messages as $message)
        {
            $checkResult = $message->checkAccess();
 
            if (!$checkResult->isSuccess())
            {
                return $checkResult;
            }
        }
 
        return new Result();
    }
}