ISOP1.php

    <?php

    declare(strict_types=1);
    
    namespace Car\Rent;
    
    final class PriceCalculator
    {
        public function calculate(CarRental $carRental): int
        {
            $startDate = $carRental->getStartDate();
            $endDate = $carRental->getEndDate();
            $days = $startDate->diff($endDate);
            $dayPrice = $days * $carRental->getPricePerDay();
    
            return $dayPrice + ($carRental->getDistance() * $carRental->getPricePerKm());
        }
    }