AutoJoinToChat.php

См. документацию.

<?php
 
namespace Bitrix\Im\V2\Controller\Filter;
 
use Bitrix\Im\V2\Chat;
use Bitrix\Im\V2\Message;
use Bitrix\Main\Engine\ActionFilter\Base;
use Bitrix\Main\Event;
 
class AutoJoinToChat extends Base
{
    public function onBeforeAction(Event $event)
    {
        $chat = $this->getChat();
        if ($chat === null)
        {
            return null;
        }
 
        if (!$chat->canUserAutoJoin())
        {
            return null;
        }
 
        $chat->join(false);
    }
 
    private function getChat(): ?Chat
    {
        $chat = $this->getAction()->getArguments()['chat'] ?? null;
 
        if ($chat instanceof Chat)
        {
            return $chat;
        }
 
        $message = $this->getAction()->getArguments()['message'] ?? null;
        if ($message instanceof Message)
        {
            return $message->getChat();
        }
 
        return null;
    }
}