Update account/position and platform summary

src/Managing.Domain/Shared/Helpers/TradingHelpers.cs

@@ -1,7 +1,9 @@
 using Exilion.TradingAtomics;
+using Managing.Common;
 using Managing.Domain.Accounts;
 using Managing.Domain.Candles;
 using Managing.Domain.Statistics;
+using Managing.Domain.Trades;
 using static Managing.Common.Enums;
 
 namespace Managing.Domain.Shared.Helpers;
@@ -97,4 +99,94 @@ public static class TradingHelpers
 
         return traders;
     }
+
+    /// <summary>
+    /// Calculates the total fees for a position based on GMX V2 fee structure
+    /// </summary>
+    /// <param name="position">The position to calculate fees for</param>
+    /// <returns>The total fees for the position</returns>
+    public static decimal CalculatePositionFees(Position position)
+    {
+        var (uiFees, gasFees) = CalculatePositionFeesBreakdown(position);
+        return uiFees + gasFees;
+    }
+
+    /// <summary>
+    /// Calculates the UI and Gas fees breakdown for a position based on GMX V2 fee structure
+    /// </summary>
+    /// <param name="position">The position to calculate fees for</param>
+    /// <returns>A tuple containing (uiFees, gasFees)</returns>
+    public static (decimal uiFees, decimal gasFees) CalculatePositionFeesBreakdown(Position position)
+    {
+        decimal uiFees = 0;
+        decimal gasFees = 0;
+
+        if (position?.Open?.Price <= 0 || position?.Open?.Quantity <= 0)
+        {
+            return (uiFees, gasFees); // Return 0 if position data is invalid
+        }
+
+        // Calculate position size in USD (leverage is already included in quantity calculation)
+        var positionSizeUsd = (position.Open.Price * position.Open.Quantity) * position.Open.Leverage;
+
+        // UI Fee: 0.1% of position size paid on opening
+        var uiFeeOpen = positionSizeUsd * Constants.GMX.Config.UiFeeRate; // Fee paid on opening
+        uiFees += uiFeeOpen;
+
+        // UI Fee: 0.1% of position size paid on closing - only if position was actually closed
+        // Check which closing trade was executed (StopLoss, TakeProfit1, or TakeProfit2)
+        if (position.StopLoss?.Status == TradeStatus.Filled)
+        {
+            var stopLossPositionSizeUsd = (position.StopLoss.Price * position.StopLoss.Quantity) * position.StopLoss.Leverage;
+            var uiFeeClose = stopLossPositionSizeUsd * Constants.GMX.Config.UiFeeRate; // Fee paid on closing via StopLoss
+            uiFees += uiFeeClose;
+        }
+        else if (position.TakeProfit1?.Status == TradeStatus.Filled)
+        {
+            var takeProfit1PositionSizeUsd = (position.TakeProfit1.Price * position.TakeProfit1.Quantity) * position.TakeProfit1.Leverage;
+            var uiFeeClose = takeProfit1PositionSizeUsd * Constants.GMX.Config.UiFeeRate; // Fee paid on closing via TakeProfit1
+            uiFees += uiFeeClose;
+        }
+        else if (position.TakeProfit2?.Status == TradeStatus.Filled)
+        {
+            var takeProfit2PositionSizeUsd = (position.TakeProfit2.Price * position.TakeProfit2.Quantity) * position.TakeProfit2.Leverage;
+            var uiFeeClose = takeProfit2PositionSizeUsd * Constants.GMX.Config.UiFeeRate; // Fee paid on closing via TakeProfit2
+            uiFees += uiFeeClose;
+        }
+
+        // Gas Fee: $0.15 for opening position only
+        // Closing is handled by oracle, so no gas fee for closing
+        gasFees += Constants.GMX.Config.GasFeePerTransaction;
+
+        return (uiFees, gasFees);
+    }
+
+    /// <summary>
+    /// Calculates UI fees for opening a position
+    /// </summary>
+    /// <param name="positionSizeUsd">The position size in USD</param>
+    /// <returns>The UI fees for opening</returns>
+    public static decimal CalculateOpeningUiFees(decimal positionSizeUsd)
+    {
+        return positionSizeUsd * Constants.GMX.Config.UiFeeRate;
+    }
+
+    /// <summary>
+    /// Calculates UI fees for closing a position
+    /// </summary>
+    /// <param name="positionSizeUsd">The position size in USD</param>
+    /// <returns>The UI fees for closing</returns>
+    public static decimal CalculateClosingUiFees(decimal positionSizeUsd)
+    {
+        return positionSizeUsd * Constants.GMX.Config.UiFeeRate;
+    }
+
+    /// <summary>
+    /// Calculates gas fees for opening a position
+    /// </summary>
+    /// <returns>The gas fees for opening (fixed at $0.15)</returns>
+    public static decimal CalculateOpeningGasFees()
+    {
+        return Constants.GMX.Config.GasFeePerTransaction;
+    }
 }