CIMRestService::chatFavoriteCounterGet

static function chatFavoriteCounterGet($arParams, $n, CRestServer $server)
{
	$arParams = array_change_key_case($arParams, CASE_UPPER);
	if (!isset($arParams['CHAT_ID']))
	{
		throw new BitrixRestRestException('CHAT_ID can`t be empty', 'CHAT_ID_EMPTY', CRestServer::STATUS_WRONG_REQUEST);
	}

	$chatId = $arParams['CHAT_ID'];
	$chat = BitrixImV2Chat::getInstance($chatId);

	if (!$chat->hasAccess())
	{
		throw new BitrixRestRestException('You do not have access to this chat', BitrixImV2RestRestError::ACCESS_ERROR, CRestServer::STATUS_FORBIDDEN);
	}

	return [
		'counter' => (new BitrixImV2LinkFavoriteFavoriteService())->getCount($chatId)
	];
}