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<?php
declare(strict_types=1);
namespace Brick\Money;
use Brick\Math\BigRational;
/**
* Container for monies in different currencies.
*
* This class is mutable.
*/
final class MoneyBag implements MoneyContainer
{
/**
* The amounts in this bag, indexed by currency code.
*
* @psalm-var array<string, BigRational>
*
* @var BigRational[]
*/
private $amounts = [];
/**
* Returns the amount in the given currency contained in the bag, as a rational number.
*
* Non-ISO (non-numeric) currency codes are accepted.
*
* @param Currency|string|int $currency The Currency instance, currency code or ISO numeric currency code.
*
* @return BigRational
*/
public function getAmount($currency) : BigRational
{
if (is_int($currency)) {
$currencyCode = (string) Currency::of($currency);
} else {
$currencyCode = (string) $currency;
}
return isset($this->amounts[$currencyCode])
? $this->amounts[$currencyCode]
: BigRational::zero();
}
/**
* Returns the amounts contained in this bag, as rational numbers, indexed by currency code.
*
* @psalm-return array<string, BigRational>
*
* @return BigRational[]
*/
public function getAmounts() : array
{
return $this->amounts;
}
/**
* Adds money to this bag.
*
* @param MoneyContainer $money A Money, RationalMoney, or MoneyBag instance.
*
* @return MoneyBag This instance.
*/
public function add(MoneyContainer $money) : MoneyBag
{
foreach ($money->getAmounts() as $currencyCode => $amount) {
$this->amounts[$currencyCode] = $this->getAmount($currencyCode)->plus($amount);
}
return $this;
}
/**
* Subtracts money from this bag.
*
* @param MoneyContainer $money A Money, RationalMoney, or MoneyBag instance.
*
* @return MoneyBag This instance.
*/
public function subtract(MoneyContainer $money) : MoneyBag
{
foreach ($money->getAmounts() as $currencyCode => $amount) {
$this->amounts[$currencyCode] = $this->getAmount($currencyCode)->minus($amount);
}
return $this;
}
}