public static BigDecimal calculateFee(
final Period period, final BigDecimal amount, final GuaranteeFeeVO guaranteeFee) {
Amount result = null;
switch (guaranteeFee.getType()) {
case FIXED:
result = Amount.fixed(guaranteeFee.getFee());
// fall down!
case PERCENTAGE:
result = result != null ? result : Amount.percentage(guaranteeFee.getFee());
return result.apply(amount);
case VARIABLE_ACCORDING_TO_TIME: // it's a compound interest calculation
if (period.getBegin().after(period.getEnd())) {
throw new IllegalArgumentException(
"Can't calculate the guarantee fee. Invalid period time: the begin date must be less than the end date");
} else if (amount.doubleValue() == 0d || guaranteeFee.getFee().doubleValue() == 0d) {
return BigDecimal.ZERO;
}
final double periodInDays = DateHelper.daysBetween(period.getBegin(), period.getEnd());
final double pow = periodInDays / 365D;
final double value =
(Math.pow(1 + guaranteeFee.getFee().doubleValue() / 100D, pow) - 1)
* amount.doubleValue();
return new BigDecimal(value);
default:
throw new IllegalArgumentException(
"Can't calculate the guarantee fee: unknown fee type: " + guaranteeFee.getType());
}
}
/** Ensure the payment can be performed */
private void validatePayment(final DoPaymentDTO payment) {
String key = null;
String arg = null;
try {
paymentService.simulatePayment(payment);
} catch (final NotEnoughCreditsException e) {
key = "mobile.payment.error.notEnoughCredits";
} catch (final MaxAmountPerDayExceededException e) {
final Calendar date = e.getDate();
if (date == null || DateHelper.sameDay(date, Calendar.getInstance())) {
key = "mobile.payment.error.maxAmountPerDay";
} else {
key = "mobile.payment.error.maxAmountPerDay.at";
arg = settingsService.getLocalSettings().getRawDateConverter().toString(date);
}
} catch (final UnexpectedEntityException e) {
key = "mobile.payment.error.noTransferType";
}
if (key != null) {
throw new MobileException(key, arg);
}
}
