@Override
void applyAttachment(
Transaction transaction, Account senderAccount, Account recipientAccount) {
Attachment.MonetarySystemCurrencyIssuance attachment =
(Attachment.MonetarySystemCurrencyIssuance) transaction.getAttachment();
Currency.addCurrency(transaction, senderAccount, attachment);
senderAccount.addToCurrencyAndUnconfirmedCurrencyUnits(
transaction.getId(), attachment.getInitialSupply());
}
@Override
boolean isDuplicate(
Transaction transaction, Map<TransactionType, Map<String, Integer>> duplicates) {
Attachment.MonetarySystemCurrencyIssuance attachment =
(Attachment.MonetarySystemCurrencyIssuance) transaction.getAttachment();
String nameLower = attachment.getName().toLowerCase();
String codeLower = attachment.getCode().toLowerCase();
boolean isDuplicate =
TransactionType.isDuplicate(CURRENCY_ISSUANCE, nameLower, duplicates, true);
if (!nameLower.equals(codeLower)) {
isDuplicate =
isDuplicate
|| TransactionType.isDuplicate(CURRENCY_ISSUANCE, codeLower, duplicates, true);
}
return isDuplicate;
}
@Override
void undoAttachmentUnconfirmed(Transaction transaction, Account senderAccount) {
Attachment.MonetarySystemReserveIncrease attachment =
(Attachment.MonetarySystemReserveIncrease) transaction.getAttachment();
long reserveSupply;
Currency currency = Currency.getCurrency(attachment.getCurrencyId());
if (currency != null) {
reserveSupply = currency.getReserveSupply();
} else { // currency must have been deleted, get reserve supply from the original issuance
// transaction
Transaction currencyIssuance =
Nxt.getBlockchain().getTransaction(attachment.getCurrencyId());
Attachment.MonetarySystemCurrencyIssuance currencyIssuanceAttachment =
(Attachment.MonetarySystemCurrencyIssuance) currencyIssuance.getAttachment();
reserveSupply = currencyIssuanceAttachment.getReserveSupply();
}
senderAccount.addToUnconfirmedBalanceNQT(
Math.multiplyExact(reserveSupply, attachment.getAmountPerUnitNQT()));
}
@Override
Fee getBaselineFee(Transaction transaction) {
Attachment.MonetarySystemCurrencyIssuance attachment =
(Attachment.MonetarySystemCurrencyIssuance) transaction.getAttachment();
if (Currency.getCurrencyByCode(attachment.getCode()) != null
|| Currency.getCurrencyByCode(attachment.getName()) != null
|| Currency.getCurrencyByName(attachment.getName()) != null
|| Currency.getCurrencyByName(attachment.getCode()) != null) {
return FIVE_LETTER_CURRENCY_ISSUANCE_FEE;
}
switch (Math.min(attachment.getCode().length(), attachment.getName().length())) {
case 3:
return THREE_LETTER_CURRENCY_ISSUANCE_FEE;
case 4:
return FOUR_LETTER_CURRENCY_ISSUANCE_FEE;
case 5:
return FIVE_LETTER_CURRENCY_ISSUANCE_FEE;
default:
// never, invalid code length will be checked and caught later
return THREE_LETTER_CURRENCY_ISSUANCE_FEE;
}
}
@Override
void validateAttachment(Transaction transaction) throws NxtException.ValidationException {
Attachment.MonetarySystemCurrencyIssuance attachment =
(Attachment.MonetarySystemCurrencyIssuance) transaction.getAttachment();
if (attachment.getMaxSupply() > Constants.MAX_CURRENCY_TOTAL_SUPPLY
|| attachment.getMaxSupply() <= 0
|| attachment.getInitialSupply() < 0
|| attachment.getInitialSupply() > attachment.getMaxSupply()
|| attachment.getReserveSupply() < 0
|| attachment.getReserveSupply() > attachment.getMaxSupply()
|| attachment.getIssuanceHeight() < 0
|| attachment.getMinReservePerUnitNQT() < 0
|| attachment.getDecimals() < 0
|| attachment.getDecimals() > 8
|| attachment.getRuleset() != 0) {
throw new NxtException.NotValidException(
"Invalid currency issuance: " + attachment.getJSONObject());
}
int t = 1;
for (int i = 0; i < 32; i++) {
if ((t & attachment.getType()) != 0 && CurrencyType.get(t) == null) {
throw new NxtException.NotValidException(
"Invalid currency type: " + attachment.getType());
}
t <<= 1;
}
CurrencyType.validate(attachment.getType(), transaction);
CurrencyType.validateCurrencyNaming(transaction.getSenderId(), attachment);
}
