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<?php |
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declare(strict_types=1); |
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namespace B2Binpay; |
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use Litipk\BigNumbers\Decimal; |
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/** |
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* Carry about precision according to currency using BigNumbers |
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* |
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* @package B2Binpay |
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*/ |
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class Amount |
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{ |
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/** |
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* @var Currency |
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*/ |
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private $currency; |
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/** |
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* @var Decimal |
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*/ |
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private $value; |
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/** |
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* @var int|null |
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*/ |
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private $precision; |
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/** |
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* @param Currency $currency |
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*/ |
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public function __construct(Currency $currency) |
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{ |
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$this->currency = $currency; |
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} |
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/** |
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* @param string $sum |
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* @param int|null $pow |
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* @param int|null $iso |
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*/ |
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public function set(string $sum, int $pow = null, int $iso = null) |
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{ |
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$value = Decimal::fromString($sum); |
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$this->precision = $iso ? $this->currency->getPrecision($iso) : 0; |
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if (empty($pow)) { |
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$scale = max($this->calcScale($sum), $this->currency->getMaxPrecision()); |
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$value = Decimal::fromString($sum, $scale); |
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} else { |
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$div = Decimal::fromInteger(10)->pow(Decimal::fromInteger($pow)); |
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$value = $value->div($div); |
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} |
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$this->value = $value; |
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} |
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/** |
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* @return string |
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*/ |
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public function getValue(): string |
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{ |
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$return = $this->value; |
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if (0 !== $this->precision) { |
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$return = $this->value->ceil($this->precision); |
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} |
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return (string)$return; |
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} |
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/** |
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* @return int |
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*/ |
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public function getPrecision(): int |
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{ |
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return $this->precision; |
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} |
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/** |
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* @return string |
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*/ |
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public function getPowered(): string |
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{ |
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$pow = Decimal::fromInteger($this->precision); |
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$mul = Decimal::fromInteger(10)->pow($pow); |
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return (string)$this->value->mul($mul)->ceil(0); |
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} |
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/** |
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* @param Amount $rate |
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* @param int $precision |
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* @return Amount |
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*/ |
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public function convert(Amount $rate, int $precision): Amount |
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{ |
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$this->precision = $precision; |
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$mul = Decimal::fromString($rate->getValue()); |
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$this->value = $this->value->mul($mul); |
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return $this; |
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} |
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/** |
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* @param int $percent |
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* @return Amount |
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*/ |
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public function percentage(int $percent): Amount |
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{ |
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$mul = Decimal::fromInteger($percent)->div(Decimal::fromInteger(100)); |
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$this->value = $this->value->add($this->value->mul($mul)); |
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return $this; |
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} |
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/** |
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* @param string $sum |
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* @return int |
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*/ |
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public function calcScale(string $sum): int |
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{ |
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$parts = explode('.', $sum); |
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return empty($parts[1]) ? 0 : strlen($parts[1]); |
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} |
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} |
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b2binpay /
api-php
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