| 1 |
<?php |
| 2 |
|
| 3 |
namespace Money; |
| 4 |
|
| 5 |
/** |
| 6 |
* Provides a way to convert Money to Money in another Currency using an exchange rate. |
| 7 |
* |
| 8 |
* @author Frederik Bosch <f.bosch@genkgo.nl> |
| 9 |
*/ |
| 10 |
final class Converter |
| 11 |
{ |
| 12 |
/** |
| 13 |
* @var Currencies |
| 14 |
*/ |
| 15 |
private $currencies; |
| 16 |
|
| 17 |
/** |
| 18 |
* @var Exchange |
| 19 |
*/ |
| 20 |
private $exchange; |
| 21 |
|
| 22 |
public function __construct(Currencies $currencies, Exchange $exchange) |
| 23 |
{ |
| 24 |
$this->currencies = $currencies; |
| 25 |
$this->exchange = $exchange; |
| 26 |
} |
| 27 |
|
| 28 |
/** |
| 29 |
* @param int $roundingMode |
| 30 |
* |
| 31 |
* @return Money |
| 32 |
*/ |
| 33 |
public function convert(Money $money, Currency $counterCurrency, $roundingMode = Money::ROUND_HALF_UP) |
| 34 |
{ |
| 35 |
$baseCurrency = $money->getCurrency(); |
| 36 |
$ratio = $this->exchange->quote($baseCurrency, $counterCurrency)->getConversionRatio(); |
| 37 |
|
| 38 |
$baseCurrencySubunit = $this->currencies->subunitFor($baseCurrency); |
| 39 |
$counterCurrencySubunit = $this->currencies->subunitFor($counterCurrency); |
| 40 |
$subunitDifference = $baseCurrencySubunit - $counterCurrencySubunit; |
| 41 |
|
| 42 |
$ratio = (string) Number::fromFloat($ratio)->base10($subunitDifference); |
| 43 |
|
| 44 |
$counterValue = $money->multiply($ratio, $roundingMode); |
| 45 |
|
| 46 |
return new Money($counterValue->getAmount(), $counterCurrency); |
| 47 |
} |
| 48 |
} |
| 49 |
|
