Add scoring message

src/Managing.Api/Models/Requests/LightBacktestResponse.cs

@@ -16,4 +16,5 @@ public class LightBacktestResponse
     public decimal Fees { get; set; }
     public double? SharpeRatio { get; set; }
     public double Score { get; set; }
+    public string ScoreMessage { get; set; } = string.Empty;
 } 

src/Managing.Application/Backtesting/Backtester.cs

@@ -317,7 +317,7 @@ namespace Managing.Application.Backtesting
                 timeframe: config.Timeframe
             );
 
-            var score = BacktestScorer.CalculateTotalScore(scoringParams);
+            var scoringResult = BacktestScorer.CalculateDetailedScore(scoringParams);
 
             // Create backtest result with conditional candles and indicators values
             var result = new Backtest(config, bot.Positions, bot.Signals.ToList(),
@@ -334,7 +334,8 @@ namespace Managing.Application.Backtesting
                 IndicatorsValues = withCandles
                     ? AggregateValues(indicatorsValues, bot.IndicatorsValues)
                     : new Dictionary<IndicatorType, IndicatorsResultBase>(),
-                Score = score,
+                Score = scoringResult.Score,
+                ScoreMessage = scoringResult.SummaryMessage,
                 Id = Guid.NewGuid().ToString(),
                 RequestId = requestId,
                 Metadata = metadata,

src/Managing.Domain/Backtests/Backtest.cs

@@ -60,6 +60,7 @@ public class Backtest
     [Required] public double Score { get; set; }
     public string RequestId { get; set; }
     public object? Metadata { get; set; }
+    public string ScoreMessage { get; set; } = string.Empty;
 
     /// <summary>
     /// Creates a new TradingBotConfig based on this backtest's configuration for starting a live bot.

src/Managing.Domain/Backtests/BacktestScoringResult.cs

@@ -0,0 +1,114 @@
+using System.Text;
+
+namespace Managing.Domain.Backtests;
+
+public class BacktestScoringResult
+{
+    public double Score { get; set; }
+    public List<ScoringCheck> Checks { get; set; } = new();
+    public string SummaryMessage { get; set; } = string.Empty;
+
+    public BacktestScoringResult(double score)
+    {
+        Score = score;
+    }
+
+    public void AddCheck(string component, double score, double weight, string message, bool passed = true)
+    {
+        Checks.Add(new ScoringCheck
+        {
+            Component = component,
+            Score = score,
+            Weight = weight,
+            Message = message,
+            Passed = passed
+        });
+    }
+
+    public void AddEarlyExitCheck(string reason, string message)
+    {
+        Checks.Add(new ScoringCheck
+        {
+            Component = "Early Exit",
+            Score = 0,
+            Weight = 0,
+            Message = message,
+            Passed = false,
+            IsEarlyExit = true
+        });
+    }
+
+    public void AddPenaltyCheck(string component, double penaltyMultiplier, string message)
+    {
+        Checks.Add(new ScoringCheck
+        {
+            Component = component,
+            Score = 0,
+            Weight = 0,
+            Message = message,
+            Passed = penaltyMultiplier >= 1.0,
+            IsPenalty = true,
+            PenaltyMultiplier = penaltyMultiplier
+        });
+    }
+
+    public string GenerateSummaryMessage()
+    {
+        if (Score == 0)
+        {
+            var earlyExit = Checks.FirstOrDefault(c => c.IsEarlyExit);
+            if (earlyExit != null)
+            {
+                return $"Score: 0 - {earlyExit.Message}";
+            }
+        }
+
+        var passedChecks = Checks.Where(c => c.Passed && !c.IsEarlyExit && !c.IsPenalty).ToList();
+        var failedChecks = Checks.Where(c => !c.Passed && !c.IsEarlyExit && !c.IsPenalty).ToList();
+        var penalties = Checks.Where(c => c.IsPenalty).ToList();
+
+        var summary = new StringBuilder();
+        summary.AppendLine($"Final Score: {Score:F1}/100");
+
+        if (passedChecks.Any())
+        {
+            summary.AppendLine($"✅ Passed Checks ({passedChecks.Count}):");
+            foreach (var check in passedChecks.OrderByDescending(c => c.Score * c.Weight))
+            {
+                summary.AppendLine($"  • {check.Component}: {check.Score:F1} points ({check.Message})");
+            }
+        }
+
+        if (failedChecks.Any())
+        {
+            summary.AppendLine($"❌ Failed Checks ({failedChecks.Count}):");
+            foreach (var check in failedChecks)
+            {
+                summary.AppendLine($"  • {check.Component}: {check.Message}");
+            }
+        }
+
+        if (penalties.Any())
+        {
+            summary.AppendLine($"⚠️ Applied Penalties ({penalties.Count}):");
+            foreach (var penalty in penalties)
+            {
+                summary.AppendLine($"  • {penalty.Component}: {penalty.Message}");
+            }
+        }
+
+        return summary.ToString().TrimEnd();
+    }
+}
+
+public class ScoringCheck
+{
+    public string Component { get; set; } = string.Empty;
+    public double Score { get; set; }
+    public double Weight { get; set; }
+    public string Message { get; set; } = string.Empty;
+    public bool Passed { get; set; }
+    public bool IsEarlyExit { get; set; }
+    public bool IsPenalty { get; set; }
+    public double PenaltyMultiplier { get; set; }
+} 

src/Managing.Domain/Backtests/LightBacktest.cs

@@ -16,4 +16,5 @@ public class LightBacktest
     public decimal Fees { get; set; }
     public double? SharpeRatio { get; set; }
     public double Score { get; set; }
+    public string ScoreMessage { get; set; } = string.Empty;
 } 

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

@@ -21,58 +21,101 @@ public class BacktestScorer
 
     public static double CalculateTotalScore(BacktestScoringParams p)
     {
+        var result = CalculateDetailedScore(p);
+        return result.Score;
+    }
+
+    public static BacktestScoringResult CalculateDetailedScore(BacktestScoringParams p)
+    {
+        var result = new BacktestScoringResult(0);
+
         try
         {
             // Early exit for no positions
             if (p.TradeCount == 0)
             {
-                return 0;
+                result.AddEarlyExitCheck("No Trades", "No trading positions were taken during the backtest period. A strategy must execute trades to be evaluated.");
+                return result;
             }
 
             // Early exit for negative PnL - should be 0 score
             if (p.TotalPnL <= 0)
             {
-                return 0;
+                result.AddEarlyExitCheck("Negative PnL", $"Total profit/loss is negative (${p.TotalPnL:F2}). Only profitable strategies receive scores.");
+                return result;
             }
 
             // Early exit if strategy significantly underperforms HODL (more than 2% worse)
             if (p.GrowthPercentage < p.HodlPercentage - 2)
             {
-                return 0;
+                result.AddEarlyExitCheck("HODL Underperformance", $"Strategy growth ({p.GrowthPercentage:F2}%) significantly underperforms HODL ({p.HodlPercentage:F2}%) by more than 2%. Buy-and-hold would have been more profitable.");
+                return result;
             }
 
-            var baseScore = CalculateBaseScore(p);
+            var baseScore = CalculateBaseScore(p, result);
-            var finalScore = ApplyProfitabilityRules(baseScore, p);
+            var finalScore = ApplyProfitabilityRules(baseScore, p, result);
 
-            return double.Clamp(finalScore, 0, 100);
+            result.Score = double.Clamp(finalScore, 0, 100);
+            result.SummaryMessage = result.GenerateSummaryMessage();
+
+            return result;
         }
-        catch
+        catch (Exception ex)
         {
-            return 0;
+            result.AddEarlyExitCheck("Calculation Error", $"An error occurred during score calculation: {ex.Message}");
+            return result;
         }
     }
 
-    private static double CalculateBaseScore(BacktestScoringParams p)
+    private static double CalculateBaseScore(BacktestScoringParams p, BacktestScoringResult result)
     {
         var componentScores = new Dictionary<string, double>
         {
-            { "GrowthPercentage", CalculateGrowthScore(p.GrowthPercentage) },
+            { "GrowthPercentage", CalculateGrowthScore(p.GrowthPercentage, result) },
-            { "SharpeRatio", CalculateSharpeScore(p.SharpeRatio) },
+            { "SharpeRatio", CalculateSharpeScore(p.SharpeRatio, result) },
-            { "MaxDrawdownUsd", CalculateDrawdownUsdScore(p.MaxDrawdown, p.InitialBalance) },
+            { "MaxDrawdownUsd", CalculateDrawdownUsdScore(p.MaxDrawdown, p.InitialBalance, result) },
-            { "HodlComparison", CalculateHodlComparisonScore(p.GrowthPercentage, p.HodlPercentage) },
+            { "HodlComparison", CalculateHodlComparisonScore(p.GrowthPercentage, p.HodlPercentage, result) },
-            { "WinRate", CalculateWinRateScore(p.WinRate, p.TradeCount) },
+            { "WinRate", CalculateWinRateScore(p.WinRate, p.TradeCount, result) },
-            { "ProfitabilityBonus", CalculateProfitabilityBonus(p.GrowthPercentage) },
+            { "ProfitabilityBonus", CalculateProfitabilityBonus(p.GrowthPercentage, result) },
-            { "TradeCount", CalculateTradeCountScore(p.TradeCount) },
+            { "TradeCount", CalculateTradeCountScore(p.TradeCount, result) },
-            { "RecoveryTime", CalculateRecoveryScore(p.MaxDrawdownRecoveryTime, p.Timeframe) },
+            { "RecoveryTime", CalculateRecoveryScore(p.MaxDrawdownRecoveryTime, p.Timeframe, result) },
-            { "TestDuration", CalculateTestDurationScore(p.StartDate, p.EndDate, p.Timeframe) },
+            { "TestDuration", CalculateTestDurationScore(p.StartDate, p.EndDate, p.Timeframe, result) },
-            { "FeesImpact", CalculateFeesImpactScore(p.FeesPaid, p.InitialBalance, (decimal)p.TotalPnL) },
+            { "FeesImpact", CalculateFeesImpactScore(p.FeesPaid, p.InitialBalance, (decimal)p.TotalPnL, result) },
-            { "RiskAdjustedReturn", CalculateRiskAdjustedReturnScore(p.TotalPnL, p.MaxDrawdown, p.InitialBalance) }
+            { "RiskAdjustedReturn", CalculateRiskAdjustedReturnScore(p.TotalPnL, p.MaxDrawdown, p.InitialBalance, result) }
         };
 
-        return componentScores.Sum(kvp => kvp.Value * Weights[kvp.Key]);
+        var totalScore = componentScores.Sum(kvp => kvp.Value * Weights[kvp.Key]);
+        
+        // Add component scores to result
+        foreach (var kvp in componentScores)
+        {
+            var passed = kvp.Value > 0;
+            result.AddCheck(kvp.Key, kvp.Value, Weights[kvp.Key], GetComponentMessage(kvp.Key, kvp.Value, p), passed);
         }
 
-    private static double ApplyProfitabilityRules(double baseScore, BacktestScoringParams p)
+        return totalScore;
+    }
+
+    private static string GetComponentMessage(string component, double score, BacktestScoringParams p)
+    {
+        return component switch
+        {
+            "GrowthPercentage" => $"Growth of {p.GrowthPercentage:F2}% (target: 10% for full score)",
+            "SharpeRatio" => $"Sharpe ratio of {p.SharpeRatio:F2} (target: 4.0 for full score)",
+            "MaxDrawdownUsd" => $"Max drawdown of ${p.MaxDrawdown:F2} ({p.MaxDrawdownPc:F1}% of balance)",
+            "HodlComparison" => $"Strategy vs HODL: {p.GrowthPercentage:F2}% vs {p.HodlPercentage:F2}% (difference: {p.GrowthPercentage - p.HodlPercentage:F2}%)",
+            "WinRate" => $"Win rate of {p.WinRate * 100:F1}% with {p.TradeCount} trades",
+            "ProfitabilityBonus" => $"Bonus for positive growth of {p.GrowthPercentage:F2}%",
+            "TradeCount" => $"{p.TradeCount} trades executed (minimum 5, optimal 50+)",
+            "RecoveryTime" => $"Recovery time: {p.MaxDrawdownRecoveryTime.TotalDays:F1} days",
+            "TestDuration" => $"Test duration: {(p.EndDate - p.StartDate).TotalDays:F1} days",
+            "FeesImpact" => $"Fees: ${p.FeesPaid:F2} ({p.FeesPaid / p.InitialBalance * 100:F2}% of balance)",
+            "RiskAdjustedReturn" => $"PnL/Drawdown ratio: {p.TotalPnL / (double)p.MaxDrawdown:F2}:1",
+            _ => $"Component score: {score:F1}"
+        };
+    }
+
+    private static double ApplyProfitabilityRules(double baseScore, BacktestScoringParams p, BacktestScoringResult result)
     {
         var penaltyMultiplier = 1.0;
 
@@ -80,30 +123,36 @@ public class BacktestScorer
         if (p.GrowthPercentage < 0)
         {
             var negativePenalty = Math.Abs(p.GrowthPercentage) * 0.1; // 10% penalty per 1% loss
-            penaltyMultiplier *= Math.Max(0.1, 1 - negativePenalty);
+            var newMultiplier = Math.Max(0.1, 1 - negativePenalty);
+            penaltyMultiplier *= newMultiplier;
+            result.AddPenaltyCheck("Negative Growth", newMultiplier, $"Negative growth of {p.GrowthPercentage:F2}% applied {negativePenalty:F1}% penalty");
         }
 
-        // Note: Negative PnL is now handled by early exit in CalculateTotalScore
-
         // 3. Win Rate Validation (Dynamic)
         if (p.WinRate < 0.3 && p.TradeCount > 10)
         {
             var winRatePenalty = (0.3 - p.WinRate) * 0.5; // 50% penalty per 10% below 30%
-            penaltyMultiplier *= Math.Max(0.2, 1 - winRatePenalty);
+            var newMultiplier = Math.Max(0.2, 1 - winRatePenalty);
+            penaltyMultiplier *= newMultiplier;
+            result.AddPenaltyCheck("Low Win Rate", newMultiplier, $"Win rate of {p.WinRate * 100:F1}% below 30% threshold applied {winRatePenalty:F1}% penalty");
         }
 
         // 4. Minimum Profit Threshold (Dynamic)
         if (p.GrowthPercentage < 2 && p.TradeCount > 5)
         {
             var profitPenalty = (2 - p.GrowthPercentage) * 0.1; // 10% penalty per 1% below 2%
-            penaltyMultiplier *= Math.Max(0.5, 1 - profitPenalty);
+            var newMultiplier = Math.Max(0.5, 1 - profitPenalty);
+            penaltyMultiplier *= newMultiplier;
+            result.AddPenaltyCheck("Low Profit", newMultiplier, $"Growth of {p.GrowthPercentage:F2}% below 2% minimum applied {profitPenalty:F1}% penalty");
         }
 
         // 5. Drawdown Penalty (Dynamic) - Enhanced to consider PnL ratio
         if (p.MaxDrawdownPc > 20)
         {
             var drawdownPenalty = (p.MaxDrawdownPc - 20) * 0.02; // 2% penalty per 1% above 20%
-            penaltyMultiplier *= Math.Max(0.3, 1 - drawdownPenalty);
+            var newMultiplier = Math.Max(0.3, 1 - drawdownPenalty);
+            penaltyMultiplier *= newMultiplier;
+            result.AddPenaltyCheck("High Drawdown", newMultiplier, $"Drawdown of {p.MaxDrawdownPc:F1}% above 20% threshold applied {drawdownPenalty:F1}% penalty");
         }
 
         // 6. Enhanced Drawdown vs PnL Penalty
@@ -113,7 +162,9 @@ public class BacktestScorer
             if (drawdownToPnLRatio > 1.5) // If drawdown is more than 150% of PnL
             {
                 var ratioPenalty = (drawdownToPnLRatio - 1.5) * 0.2; // 20% penalty per 0.5 ratio above 1.5
-                penaltyMultiplier *= Math.Max(0.2, 1 - ratioPenalty);
+                var newMultiplier = Math.Max(0.2, 1 - ratioPenalty);
+                penaltyMultiplier *= newMultiplier;
+                result.AddPenaltyCheck("Poor Risk/Reward", newMultiplier, $"Drawdown/PnL ratio of {drawdownToPnLRatio:F2}:1 above 1.5:1 threshold applied {ratioPenalty:F1}% penalty");
             }
         }
 
@@ -122,7 +173,9 @@ public class BacktestScorer
         if (testDurationDays < 30)
         {
             var durationPenalty = (30 - testDurationDays) * 0.02; // 2% penalty per day below 30
-            penaltyMultiplier *= Math.Max(0.5, 1 - durationPenalty);
+            var newMultiplier = Math.Max(0.5, 1 - durationPenalty);
+            penaltyMultiplier *= newMultiplier;
+            result.AddPenaltyCheck("Short Test Duration", newMultiplier, $"Test duration of {testDurationDays:F1} days below 30-day minimum applied {durationPenalty:F1}% penalty");
         }
 
         // 8. HODL Underperformance Penalty (Dynamic)
@@ -130,13 +183,15 @@ public class BacktestScorer
         {
             var hodlUnderperformance = p.HodlPercentage - p.GrowthPercentage;
             var hodlPenalty = hodlUnderperformance * 0.3; // 30% penalty per 1% underperformance
-            penaltyMultiplier *= Math.Max(0.1, 1 - hodlPenalty);
+            var newMultiplier = Math.Max(0.1, 1 - hodlPenalty);
+            penaltyMultiplier *= newMultiplier;
+            result.AddPenaltyCheck("HODL Underperformance", newMultiplier, $"Underperforming HODL by {hodlUnderperformance:F2}% applied {hodlPenalty:F1}% penalty");
         }
 
         return baseScore * penaltyMultiplier;
     }
 
-    private static double CalculateGrowthScore(double growthPercentage)
+    private static double CalculateGrowthScore(double growthPercentage, BacktestScoringResult result)
     {
         // More aggressive scoring - harder to reach 100
         if (growthPercentage < 0)
@@ -164,7 +219,7 @@ public class BacktestScorer
         };
     }
 
-    private static double CalculateProfitabilityBonus(double growthPercentage)
+    private static double CalculateProfitabilityBonus(double growthPercentage, BacktestScoringResult result)
     {
         return growthPercentage switch
         {
@@ -173,7 +228,7 @@ public class BacktestScorer
         };
     }
 
-    private static double CalculateSharpeScore(double sharpeRatio)
+    private static double CalculateSharpeScore(double sharpeRatio, BacktestScoringResult result)
     {
         return sharpeRatio switch
         {
@@ -183,7 +238,7 @@ public class BacktestScorer
         };
     }
 
-    private static double CalculateDrawdownUsdScore(decimal maxDrawdown, decimal initialBalance)
+    private static double CalculateDrawdownUsdScore(decimal maxDrawdown, decimal initialBalance, BacktestScoringResult result)
     {
         if (initialBalance <= 0) return 0;
         
@@ -195,7 +250,7 @@ public class BacktestScorer
         };
     }
 
-    private static double CalculateWinRateScore(double winRate, int tradeCount)
+    private static double CalculateWinRateScore(double winRate, int tradeCount, BacktestScoringResult result)
     {
         // Base win rate score
         var baseScore = winRate * 100;
@@ -212,7 +267,7 @@ public class BacktestScorer
         return baseScore * significanceFactor;
     }
 
-    private static double CalculateHodlComparisonScore(double strategyGrowth, double hodlGrowth)
+    private static double CalculateHodlComparisonScore(double strategyGrowth, double hodlGrowth, BacktestScoringResult result)
     {
         var difference = strategyGrowth - hodlGrowth;
         
@@ -228,7 +283,7 @@ public class BacktestScorer
         };
     }
 
-    private static double CalculateTradeCountScore(int tradeCount)
+    private static double CalculateTradeCountScore(int tradeCount, BacktestScoringResult result)
     {
         return tradeCount switch
         {
@@ -239,7 +294,7 @@ public class BacktestScorer
         };
     }
 
-    private static double CalculateRecoveryScore(TimeSpan recoveryTime, Timeframe timeframe)
+    private static double CalculateRecoveryScore(TimeSpan recoveryTime, Timeframe timeframe, BacktestScoringResult result)
     {
         var days = recoveryTime.TotalDays;
         
@@ -260,7 +315,7 @@ public class BacktestScorer
         return 100 - (days / maxRecoveryDays * 100);
     }
 
-    private static double CalculateTestDurationScore(DateTime startDate, DateTime endDate, Timeframe timeframe)
+    private static double CalculateTestDurationScore(DateTime startDate, DateTime endDate, Timeframe timeframe, BacktestScoringResult result)
     {
         var durationDays = (endDate - startDate).TotalDays;
         
@@ -283,7 +338,7 @@ public class BacktestScorer
         return 100;
     }
 
-    private static double CalculateFeesImpactScore(decimal feesPaid, decimal initialBalance, decimal totalPnL)
+    private static double CalculateFeesImpactScore(decimal feesPaid, decimal initialBalance, decimal totalPnL, BacktestScoringResult result)
     {
         if (initialBalance <= 0) return 0;
         
@@ -307,7 +362,7 @@ public class BacktestScorer
         return feeEfficiency;
     }
 
-    private static double CalculateRiskAdjustedReturnScore(double totalPnL, decimal maxDrawdown, decimal initialBalance)
+    private static double CalculateRiskAdjustedReturnScore(double totalPnL, decimal maxDrawdown, decimal initialBalance, BacktestScoringResult result)
     {
         if (initialBalance <= 0 || maxDrawdown <= 0) return 0;
         

src/Managing.Infrastructure.Database/BacktestRepository.cs

@@ -157,7 +157,8 @@ public class BacktestRepository : IBacktestRepository
             MaxDrawdown = b.Statistics?.MaxDrawdown,
             Fees = b.Fees,
             SharpeRatio = b.Statistics?.SharpeRatio != null ? (double)b.Statistics.SharpeRatio : null,
-            Score = b.Score
+            Score = b.Score,
+            ScoreMessage = b.ScoreMessage ?? string.Empty
         });
 
         return (mappedBacktests, (int)totalCount);
@@ -284,7 +285,8 @@ public class BacktestRepository : IBacktestRepository
             MaxDrawdown = b.Statistics?.MaxDrawdown,
             Fees = b.Fees,
             SharpeRatio = b.Statistics?.SharpeRatio != null ? (double)b.Statistics.SharpeRatio : null,
-            Score = b.Score
+            Score = b.Score,
+            ScoreMessage = b.ScoreMessage ?? string.Empty
         });
 
         return (mappedBacktests, (int)totalCount);

src/Managing.Infrastructure.Database/MongoDb/Collections/BacktestDto.cs

@@ -29,6 +29,7 @@ namespace Managing.Infrastructure.Databases.MongoDb.Collections
         [BsonRepresentation(BsonType.Decimal128)]
         public decimal Fees { get; set; }
         public double Score { get; set; }
+        public string ScoreMessage { get; set; } = string.Empty;
         public string Identifier { get; set; }
         public string RequestId { get; set; }
         public string? Metadata { get; set; }

src/Managing.Infrastructure.Database/MongoDb/MongoMappers.cs

@@ -150,6 +150,7 @@ public static class MongoMappers
             StartDate = b.StartDate,
             EndDate = b.EndDate,
             Score = b.Score,
+            ScoreMessage = b.ScoreMessage ?? string.Empty,
             RequestId = b.RequestId,
             Metadata = string.IsNullOrEmpty(b.Metadata) ? null : JsonSerializer.Deserialize<object>(b.Metadata)
         };
@@ -179,6 +180,7 @@ public static class MongoMappers
             StartDate = result.StartDate,
             EndDate = result.EndDate,
             Score = result.Score,
+            ScoreMessage = result.ScoreMessage ?? string.Empty,
             RequestId = result.RequestId,
             Metadata = result.Metadata == null ? null : JsonSerializer.Serialize(result.Metadata)
         };