<?php

namespace MMT\DDDSharedKernel\ValueObjects;

use MMT\DDDSharedKernel\Interfaces\Commission;

class FixedCommission extends Commission
{
    public function __construct(
        public private(set) Money $value
    )
    {
        if($value->isNegative()) {
            throw new \InvalidArgumentException('The amount of a commission cannot be negative');
        }
    }

    public function applyTo(?Money $money = null): Money
    {
        return $this->value;
    }
}