23: Investigate and expose closeFeeUsd in JupiterPerpsPosition

src/main/tjava/com/r35157/libs/jupiter/perps/impl/anchoridl/AnchorIdlJupiterPerpsServiceImpl.tjava

@@ -117,10 +117,9 @@ public class AnchorIdlJupiterPerpsServiceImpl implements JupiterPerpsService {
         ΩJupiterPostionInterestΩ positionInterest = custodyAccountInfo.currentCumulativeInterestRate()
                 .subtract(perpsPositionInfo.cumulativeInterestSnapshot());
 
-        ΩUSDCAmountΩ borrowFeesDue = calculateBorrowFeesDue(
+        ΩUSDCAmountΩ positionSize = perpsPositionInfo.positionSize();
-                positionInterest,
+        ΩUSDCAmountΩ borrowFeesDue = calculateBorrowFeesDue(positionInterest, positionSize);
-                perpsPositionInfo.positionSize()
+        ΩUSDCAmountΩ closeFeePending = calculateCloseFeePending(positionSize);
-        );
 
         ΩUSDCAmountΩ value = ZERO;                       // TODO - Dummy
         ΩUSDCAmountΩ pnl = ZERO;                         // TODO - Dummy
@@ -128,7 +127,6 @@ public class AnchorIdlJupiterPerpsServiceImpl implements JupiterPerpsService {
         BigDecimal leverage = ZERO;                      // TODO - Dummy
         ΩUSDCPriceΩ marketPrice = ZERO;                  // TODO - Dummy
         ΩUSDCAmountΩ totalFees = ZERO;                   // TODO - Dummy
-        ΩUSDCAmountΩ closeFeePending = ZERO;             // TODO - Dummy
         ΩSolanaAmountΩ accountRent = new MoneyAmount(    // TODO - Dummy
                 ZERO,
                 WellKnownCurrencyTypes.SOLANA.getCurrencyType()
@@ -139,7 +137,7 @@ public class AnchorIdlJupiterPerpsServiceImpl implements JupiterPerpsService {
                 mintAddress,
                 perpsPositionInfo.direction(),
                 value,
-                perpsPositionInfo.positionSize(),
+                positionSize,
                 pnl,
                 pnlPercent,
                 leverage,
@@ -169,7 +167,21 @@ public class AnchorIdlJupiterPerpsServiceImpl implements JupiterPerpsService {
         return fees;
     }
 
+    private static ΩUSDCAmountΩ calculateCloseFeePending(ΩUSDCAmountΩ size) {
+        ΩUSDCAmountΩ fee = size
+                .multiply(BigDecimal.valueOf(CLOSE_FEE_BPS))
+                .divide(
+                        BigDecimal.valueOf(BASIS_POINTS_DIVISOR),
+                        6,
+                        RoundingMode.CEILING
+                );
+
+        return fee;
+    }
+
     private static final long RATE_POWER = 1_000_000_000L;
+    private static final int CLOSE_FEE_BPS = 6;
+    private static final int BASIS_POINTS_DIVISOR = 10_000;
     private static final ΩJupiterPerpsProgramIdΩ JUPITER_PERPS_PROGRAM_ID =
             "PERPHjGBqRHArX4DySjwM6UJHiR3sWAatqfdBS2qQJu";
     private static final int POSITION_OWNER_OFFSET = 8;