private BigDecimal getExchangeRateLastSync(String cryptoCurrency, String fiatCurrency) {
if (!ICurrencies.NXT.equalsIgnoreCase(cryptoCurrency)) {
return null; // unsupported currency
}
OrderBookResponse orderBookResponse = api.returnOrderBook("returnOrderBook", "BTC_NXT", 10000);
if (orderBookResponse != null) {
BigDecimal[][] asks = orderBookResponse.getAsks();
BigDecimal asksTotal = BigDecimal.ZERO;
BigDecimal targetAmount =
new BigDecimal(100000); // calculate price based on this amount of NXT
BigDecimal tradableLimit = BigDecimal.ZERO;
for (int i = 0; i < asks.length; i++) {
BigDecimal[] ask = asks[i];
// log.debug("ask = " + ask);
asksTotal = asksTotal.add(ask[1]);
if (targetAmount.compareTo(asksTotal) <= 0) {
tradableLimit = ask[0];
break;
}
}
// System.out.println("tradableLimit = " + tradableLimit);;
if (tradableLimit != null) {
BigDecimal btcRate = btcRs.getExchangeRateLast(ICurrencies.BTC, fiatCurrency);
if (btcRate != null) {
return btcRate.multiply(tradableLimit);
}
}
return null;
}
return null;
}
@Override
public String getPreferredFiatCurrency() {
return btcRs.getPreferredFiatCurrency();
}
@Override
public Set<String> getFiatCurrencies() {
return btcRs.getFiatCurrencies();
}