CIMChat::Rename

public function Rename($chatId, $title, $checkPermission = true, $sendMessage = true)
{
	global $DB;
	$chatId = intval($chatId);
	$title = mb_substr(trim($title), 0, 255);

	if ($chatId <= 0 || $title == '')
		return false;

	if ($checkPermission)
	{
		$strSql = "
			SELECT R.CHAT_ID, C.TITLE CHAT_TITLE, C.AUTHOR_ID CHAT_AUTHOR_ID, C.TYPE CHAT_TYPE, C.ENTITY_TYPE CHAT_ENTITY_TYPE, C.ENTITY_ID CHAT_ENTITY_ID, R.MANAGER IS_MANAGER
			FROM b_im_relation R LEFT JOIN b_im_chat C ON R.CHAT_ID = C.ID
			WHERE R.USER_ID = ".$this->user_id." AND R.MESSAGE_TYPE IN ('".IM_MESSAGE_OPEN."','".IM_MESSAGE_CHAT."','".IM_MESSAGE_OPEN_LINE."') AND R.CHAT_ID = ".$chatId;
	}
	else
	{
		$strSql = "
			SELECT C.ID CHAT_ID, C.TITLE CHAT_TITLE, C.AUTHOR_ID CHAT_AUTHOR_ID, C.TYPE CHAT_TYPE, C.ENTITY_TYPE CHAT_ENTITY_TYPE, C.ENTITY_ID CHAT_ENTITY_ID, 'Y' IS_MANAGER
			FROM b_im_chat C
			WHERE C.ID = ".$chatId." AND C.TYPE IN ('".IM_MESSAGE_OPEN."','".IM_MESSAGE_CHAT."','".IM_MESSAGE_OPEN_LINE."')";
	}
	$dbRes = $DB->Query($strSql, false, "File: ".__FILE__."
Line: ".__LINE__);
	if ($arRes = $dbRes->Fetch())
	{
		$arRes['CHAT_TITLE'] = BitrixImText::decodeEmoji($arRes['CHAT_TITLE']);

		if ($arRes['CHAT_TITLE'] == $title)
			return false;

		if ($arRes['CHAT_ENTITY_TYPE'] === 'ANNOUNCEMENT' && $arRes['IS_MANAGER'] !== 'Y')
		{
			return false;
		}

		$arRes['CHAT_TYPE'] = trim($arRes['CHAT_TYPE']);

		IMModelChatTable::update($chatId, array('TITLE' => $title));

		if ($sendMessage)
		{
			if ($checkPermission)
			{
				CIMChat::AddSystemMessage(Array(
					'CHAT_ID' => $chatId,
					'USER_ID' => $this->user_id,
					'MESSAGE_CODE' => 'IM_CHAT_CHANGE_TITLE_',
					'MESSAGE_REPLACE' => Array('#CHAT_TITLE#' => $title)
				));
			}
			else
			{
				self::AddMessage(Array(
					"TO_CHAT_ID" => $chatId,
					"MESSAGE" => GetMessage("IM_CHAT_CHANGE_TITLE", Array('#CHAT_TITLE#' => $title)),
					"SYSTEM" => 'Y',
					"SKIP_USER_CHECK" => 'Y',
				));
			}
		}

		$ar = CIMChat::GetRelationById($chatId, false, true, false);
		if ($arRes['CHAT_ENTITY_TYPE'] == 'LINES')
		{
			foreach ($ar as $rel)
			{
				if ($rel["EXTERNAL_AUTH_ID"] == 'imconnector')
				{
					unset($ar[$rel["USER_ID"]]);
				}
			}
		}

		if ($arRes['CHAT_TYPE'] == IM_MESSAGE_OPEN)
		{
			CIMContactList::CleanAllChatCache();
		}
		else
		{
			foreach ($ar as $rel)
			{
				CIMContactList::CleanChatCache($rel['USER_ID']);
			}
		}
		if (CModule::IncludeModule("pull"))
		{
			$pushMessage = Array(
				'module_id' => 'im',
				'command' => 'chatRename',
				'params' => Array(
					'chatId' => $chatId,
					'name' => $title,
				),
				'extra' => BitrixImCommon::getPullExtra()
			);
			BitrixPullEvent::add(array_keys($ar), $pushMessage);
			if ($arRes['CHAT_TYPE'] == IM_MESSAGE_OPEN || $arRes['CHAT_TYPE'] == IM_MESSAGE_OPEN_LINE)
			{
				CPullWatch::AddToStack('IM_PUBLIC_'.$chatId, $pushMessage);
			}
		}

		foreach(GetModuleEvents("im", "OnChatRename", true) as $arEvent)
		{
			ExecuteModuleEventEx($arEvent, array($chatId, $title, $arRes['CHAT_ENTITY_TYPE'], $arRes['CHAT_ENTITY_ID'], $this->user_id));
		}

		return true;
	}
	return false;
}