private function calculateCouponModifier(CouponInterface $coupon, OrderInterface $order) : float
{
$modifierType = $coupon->getModifierType();
$modifierValue = $coupon->getModifierValue();
$baseCurrency = $coupon->getCurrency();
$targetCurrency = $order->getCurrency();
$totalGrossPrice = $order->getProductTotal()->getGrossPrice();
if ('%' === $modifierType) {
return $modifierValue / 100;
}
if ('-' === $modifierType) {
$modifierValue = $this->currencyHelper->convert($modifierValue, $baseCurrency, $targetCurrency);
return $modifierValue >= $totalGrossPrice ? 1 : $modifierValue / $totalGrossPrice;
}
return 1;
}
/**
* Calculates the modifier's value according to current currency and coupon's modifier
*
* @param CouponInterface $coupon
* @param float|int $amount
* @param string $targetCurrency
*
* @return float|int
*/
protected function calculateModifierValue(CouponInterface $coupon, $amount, $targetCurrency)
{
$modifierType = $coupon->getModifierType();
$modifierValue = $coupon->getModifierValue();
$baseCurrency = $coupon->getCurrency();
switch ($modifierType) {
case '-':
$modifierValue = $this->currencyHelper->convert($modifierValue, $baseCurrency, $targetCurrency);
$modifier = $modifierValue >= $amount ? 1 : $modifierValue / $amount;
break;
case '%':
$modifier = $modifierValue / 100;
break;
default:
$modifier = 0;
}
return $modifier;
}