/**
* Calculates the exchange rate between ISOs.
*
* @param string $currencyFromIso The currency ISO we are converting from.
* @param string $currencyToIso The currency ISO we are converting to.
*
* @return float
*
* @throws CurrencyNotConvertibleException
*/
protected function calculateExchangeRateBetweenIsos($currencyFromIso, $currencyToIso)
{
$currencyExchangeRates = $this->currencyManager->getExchangeRateList();
/**
* We are calculating the exchange from the default currency.
*/
if ($this->defaultExchangeCurrencyIso == $currencyFromIso && isset($currencyExchangeRates[$currencyToIso])) {
$exchangeRate = $currencyExchangeRates[$currencyToIso]['rate'];
} elseif ($this->defaultExchangeCurrencyIso == $currencyToIso && isset($currencyExchangeRates[$currencyFromIso])) {
$exchangeRate = 1 / $currencyExchangeRates[$currencyFromIso]['rate'];
} elseif (isset($currencyExchangeRates[$currencyFromIso]) && isset($currencyExchangeRates[$currencyToIso])) {
$exchangeRate = 1 / $currencyExchangeRates[$currencyFromIso]['rate'] * $currencyExchangeRates[$currencyToIso]['rate'];
} else {
throw new CurrencyNotConvertibleException();
}
return $exchangeRate;
}
/**
* Convert Amount given base currency iso
*
* @param string $currencyToIso Currency iso where to convert to
* @param integer $amount Amount to convert
* @param boolean $type Type of conversion
*
* @return float conversion
*
* @throws CurrencyNotConvertibleException Currencies cannot be converted
*/
private function convertToIso($currencyToIso, $amount, $type)
{
if (isset($this->currencyManager->getExchangeRateList()[$currencyToIso])) {
$currencyRate = $this->currencyManager->getExchangeRateList()[$currencyToIso];
} else {
/**
* No CurrencyRate can be found
*/
throw new CurrencyNotConvertibleException();
}
return $type ? $amount * $currencyRate['rate'] : $amount / $currencyRate['rate'];
}