CarListSorter

class CarListSorter
{
    public const DIRECTION_ASC = 'ASC';
    public const DIRECTION_DESC = 'DESC';

    private static $properties = [
        'brandName', 'modelName', 'auctionName', 'auctionDateTime', 'transmissionType', 'gearType', 'year',
        'enginePowerHp', 'mileageKm', 'color', 'lot', 'bodyModel', 'rate', 'startPriceJpy', 'finishPriceJpy',
        'avgPriceJpy'
    ];

    private $sorting = [];

    public function __isset($name)
    {
        if (!in_array($name, self::$properties))
            throw new LogicException("Property '{$name}' is not available for list sorting");

        return isset($this->sorting[$name]);
    }

    public function __set($name, ?string $value = null)
    {
        // todo: valid options in message
        if ($value !== null && !in_array($value, [self::DIRECTION_ASC, self::DIRECTION_DESC], true))
            throw new LogicException("Sorting value '{$value}' is incorrect.");

        if (!in_array($name, $this->sorting) && $value !== null)
            $this->sorting[$name] = $value;
        if ($value === null)
            unset($this->sorting[$name]);
    }

    public function __get($name)
    {
        if (!in_array($name, self::$properties))
            throw new LogicException("Property '{$name}' is not available for list sorting");

        return $this->sorting[$name] ?? null;
    }
}