Simara\Cart\Domain\Price

Complexity

Total Complexity

6

Size/Duplication

Total Lines	46
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

6 Methods

Rating	Name	Duplication	Size	Complexity
A	sum()	0	6	1
A	fromDecimal()	0	3	1
A	multiply()	0	4	1
A	add()	0	4	1
A	__construct()	0	5	1
A	getWithVat()	0	3	1

<?php

namespace Simara\Cart\Domain;

use Litipk\BigNumbers\Decimal;

final class Price
{
    private const DECIMALS = 2;

    private Decimal $withVat;

    public function __construct(string $withVat)
    {
        $withHigherPrecision = Decimal::fromString($withVat, self::DECIMALS + 1);
        $truncated = $withHigherPrecision->floor(self::DECIMALS);
        $this->withVat = $truncated;
    }

    /**
     * @param self[] $prices
     * @return self
     */
    public static function sum(array $prices): self
    {
        return array_reduce(
            $prices,
            fn(self $carry, self $price) => $carry->add($price),
            new self('0')
        );
    }

    public function getWithVat(): string
    {
        return (string) $this->withVat->floor(self::DECIMALS);
    }

    public function add(self $adder): self
    {
        $withVat = $this->withVat->add($adder->withVat);
        return self::fromDecimal($withVat);
    }

    public function multiply(int $multiplier): self
    {
        $withVat = $this->withVat->mul(Decimal::fromInteger($multiplier));
        return self::fromDecimal($withVat);
    }

    private static function fromDecimal(Decimal $withVat): self
    {
        return new self($withVat->floor(self::DECIMALS)->__toString());
    }
}