refactor(dotnet): normalize history ingestion payloads

src/dotnet/QuantEngine.Application/Services/HistoryIngestionService.cs

@@ -34,25 +34,32 @@ namespace QuantEngine.Application.Services
             string? sourceVersion = null,
             string? gate = null)
         {
+            ArgumentNullException.ThrowIfNull(decision);
+
+            var normalizedInstrumentId = NormalizeOptional(instrumentId);
+            var normalizedSourceVersion = NormalizeOptional(sourceVersion) ?? RequireValue(decision.DecisionSource, nameof(decision.DecisionSource));
+            var normalizedGate = NormalizeOptional(gate) ?? (string.IsNullOrWhiteSpace(sellDecision?.Validation) ? "PASS" : sellDecision.Validation!.Trim());
+            var normalizedAction = RequireValue(decision.FinalAction, nameof(decision.FinalAction));
+
             var payload = new Dictionary<string, object?>
             {
                 ["decision_id"] = Guid.NewGuid().ToString("N"),
                 ["decided_at"] = DateTimeOffset.UtcNow,
-                ["instrument_id"] = instrumentId ?? string.Empty,
-                ["action"] = decision.FinalAction,
-                ["gate"] = gate ?? (string.IsNullOrWhiteSpace(sellDecision?.Validation) ? "PASS" : sellDecision.Validation),
+                ["instrument_id"] = normalizedInstrumentId ?? string.Empty,
+                ["action"] = normalizedAction,
+                ["gate"] = normalizedGate,
                 ["score"] = decision.PriorityScore,
-                ["source_version"] = sourceVersion ?? decision.DecisionSource,
+                ["source_version"] = normalizedSourceVersion,
                 ["provenance"] = new Dictionary<string, object?>
                 {
-                    ["final_action"] = decision.FinalAction,
+                    ["final_action"] = normalizedAction,
                     ["action_priority"] = decision.ActionPriority,
                     ["priority_score"] = decision.PriorityScore,
                     ["decision_source"] = decision.DecisionSource,
-                    ["sell_action"] = sellDecision?.Action,
-                    ["sell_validation"] = sellDecision?.Validation,
-                    ["timing_action"] = timingDecision?.Action,
-                    ["timing_reason"] = timingDecision?.Reason
+                    ["sell_action"] = NormalizeOptional(sellDecision?.Action),
+                    ["sell_validation"] = NormalizeOptional(sellDecision?.Validation),
+                    ["timing_action"] = NormalizeOptional(timingDecision?.Action),
+                    ["timing_reason"] = NormalizeOptional(timingDecision?.Reason)
                 }
             };
 
@@ -67,6 +74,11 @@ namespace QuantEngine.Application.Services
             string? sourceVersion = null,
             DateTimeOffset? observedAt = null)
         {
+            factorId = RequireValue(factorId, nameof(factorId));
+            factorVersion = RequireValue(factorVersion, nameof(factorVersion));
+            outputGate = RequireValue(outputGate, nameof(outputGate));
+            sourceVersion = NormalizeOptional(sourceVersion) ?? factorVersion;
+
             var payload = new Dictionary<string, object?>
             {
                 ["factor_output_id"] = Guid.NewGuid().ToString("N"),
@@ -75,7 +87,7 @@ namespace QuantEngine.Application.Services
                 ["factor_version"] = factorVersion,
                 ["output_value"] = outputValue,
                 ["output_gate"] = outputGate,
-                ["source_version"] = sourceVersion ?? factorVersion,
+                ["source_version"] = sourceVersion,
                 ["provenance"] = new Dictionary<string, object?>
                 {
                     ["factor_id"] = factorId,
@@ -88,5 +100,18 @@ namespace QuantEngine.Application.Services
 
             return _store.AppendAsync("factor_output_history", payload);
         }
+
+        private static string RequireValue(string value, string parameterName)
+        {
+            if (string.IsNullOrWhiteSpace(value))
+            {
+                throw new ArgumentException("Value is required.", parameterName);
+            }
+
+            return value.Trim();
+        }
+
+        private static string? NormalizeOptional(string? value)
+            => string.IsNullOrWhiteSpace(value) ? null : value.Trim();
     }
 }

src/dotnet/QuantEngine.Core.Tests/HistoryIngestionServiceTests.cs

@@ -0,0 +1,51 @@
+using Moq;
+using QuantEngine.Application.Services;
+using QuantEngine.Core.Domain;
+using QuantEngine.Core.Interfaces;
+
+namespace QuantEngine.Core.Tests;
+
+public class HistoryIngestionServiceTests
+{
+    [Fact]
+    public async Task AppendDecisionAsync_NormalizesTypedPayload()
+    {
+        var store = new Mock<IPostgresqlHistoryStore>(MockBehavior.Strict);
+        store.Setup(s => s.AppendAsync("decision_result_history", It.Is<IDictionary<string, object?>>(payload =>
+            payload["instrument_id"] != null && payload["instrument_id"]!.ToString() == "005930" &&
+            payload["action"] != null && payload["action"]!.ToString() == "BUY" &&
+            payload["gate"] != null && payload["gate"]!.ToString() == "PASS" &&
+            payload["source_version"] != null && payload["source_version"]!.ToString() == "v1"))).ReturnsAsync(1);
+
+        var service = new HistoryIngestionService(store.Object);
+
+        var result = await service.AppendDecisionAsync(
+            new FinalDecisionResult
+            {
+                FinalAction = " BUY ",
+                ActionPriority = 1,
+                PriorityScore = 12.3,
+                DecisionSource = " v1 "
+            },
+            new SellDecisionResult { Action = "SELL", Validation = " PASS " },
+            null,
+            " 005930 ",
+            "  ",
+            null);
+
+        Assert.Equal(1, result);
+        store.VerifyAll();
+    }
+
+    [Fact]
+    public async Task AppendFactorOutputAsync_RejectsBlankCoreFields()
+    {
+        var service = new HistoryIngestionService(new Mock<IPostgresqlHistoryStore>().Object);
+
+        await Assert.ThrowsAsync<ArgumentException>(() => service.AppendFactorOutputAsync(
+            "  ",
+            "1.0",
+            1.0,
+            "PASS"));
+    }
+}