fix offer amount adjustment via api

Author: woodser

core/src/main/java/haveno/core/offer/CreateOfferService.java

@@ -35,6 +35,7 @@
 import haveno.core.trade.statistics.TradeStatisticsManager;
 import haveno.core.user.User;
 import haveno.core.util.coin.CoinUtil;
+import haveno.core.xmr.wallet.Restrictions;
 import haveno.core.xmr.wallet.XmrWalletService;
 import haveno.network.p2p.NodeAddress;
 import haveno.network.p2p.P2PService;
@@ -158,8 +159,9 @@ public Offer createAndGetOffer(String offerId,
         }
 
         // adjust amount and min amount
-        amount = CoinUtil.getRoundedAmount(amount, fixedPrice, minAmount, amount, currencyCode, paymentAccount.getPaymentMethod().getId());
-        minAmount = CoinUtil.getRoundedAmount(minAmount, fixedPrice, minAmount, amount, currencyCode, paymentAccount.getPaymentMethod().getId());
+        BigInteger maxTradeLimit = offerUtil.getMaxTradeLimitForRelease(paymentAccount, currencyCode, direction, buyerAsTakerWithoutDeposit);
+        amount = CoinUtil.getRoundedAmount(amount, fixedPrice, Restrictions.getMinTradeAmount(), maxTradeLimit, currencyCode, paymentAccount.getPaymentMethod().getId());
+        minAmount = CoinUtil.getRoundedAmount(minAmount, fixedPrice, Restrictions.getMinTradeAmount(), maxTradeLimit, currencyCode, paymentAccount.getPaymentMethod().getId());
 
         // generate one-time challenge for private offer
         String challenge = null;

core/src/main/java/haveno/core/offer/OfferUtil.java

@@ -56,6 +56,7 @@
 import haveno.core.payment.PaymentAccount;
 import haveno.core.provider.price.MarketPrice;
 import haveno.core.provider.price.PriceFeedService;
+import haveno.core.trade.HavenoUtils;
 import haveno.core.trade.statistics.ReferralIdService;
 import haveno.core.user.AutoConfirmSettings;
 import haveno.core.user.Preferences;
@@ -269,4 +270,21 @@ public static boolean isTraditionalOffer(Offer offer) {
     public static boolean isCryptoOffer(Offer offer) {
         return offer.getCounterCurrencyCode().equals("XMR");
     }
+
+    public BigInteger getMaxTradeLimitForRelease(PaymentAccount paymentAccount,
+                                                  String currencyCode,
+                                                  OfferDirection direction,
+                                                  boolean buyerAsTakerWithoutDeposit) {
+        
+        // disallow offers which no buyer can take due to trade limits on release
+        if (HavenoUtils.isReleasedWithinDays(HavenoUtils.RELEASE_LIMIT_DAYS)) {
+            return BigInteger.valueOf(accountAgeWitnessService.getMyTradeLimit(paymentAccount, currencyCode, OfferDirection.BUY, buyerAsTakerWithoutDeposit));
+        }
+
+        if (paymentAccount != null) {
+            return BigInteger.valueOf(accountAgeWitnessService.getMyTradeLimit(paymentAccount, currencyCode, direction, buyerAsTakerWithoutDeposit));
+        } else {
+            return BigInteger.ZERO;
+        }
+    }
 }

desktop/src/main/java/haveno/desktop/main/offer/MutableOfferDataModel.java

@@ -473,17 +473,7 @@ public double getMarketPriceMarginPct() {
     }
 
     BigInteger getMaxTradeLimit() {
-
-        // disallow offers which no buyer can take due to trade limits on release
-        if (HavenoUtils.isReleasedWithinDays(HavenoUtils.RELEASE_LIMIT_DAYS)) {
-            return BigInteger.valueOf(accountAgeWitnessService.getMyTradeLimit(paymentAccount, tradeCurrencyCode.get(), OfferDirection.BUY, buyerAsTakerWithoutDeposit.get()));
-        }
-
-        if (paymentAccount != null) {
-            return BigInteger.valueOf(accountAgeWitnessService.getMyTradeLimit(paymentAccount, tradeCurrencyCode.get(), direction, buyerAsTakerWithoutDeposit.get()));
-        } else {
-            return BigInteger.ZERO;
-        }
+        return offerUtil.getMaxTradeLimitForRelease(paymentAccount, tradeCurrencyCode.get(), direction, buyerAsTakerWithoutDeposit.get());
     }
 
     BigInteger getMinTradeLimit() {