From 6208f642becc1049a57a963b3d17438a3fdba6f1 Mon Sep 17 00:00:00 2001
From: TekH <h.tek@digitaldata.works>
Date: Fri, 28 Nov 2025 12:19:40 +0100
Subject: [PATCH] Use SingleOrDefaultAsync for stricter query constraints

Replaced FirstOrDefaultAsync with SingleOrDefaultAsync in
BodyQueryBehavior.cs and HeaderQueryBehavior.cs to enforce
that database queries return at most one result. This change
ensures an exception is thrown if multiple results are found,
making debugging and error handling more explicit.
---
 src/ReC.Application/Common/Behaviors/BodyQueryBehavior.cs   | 2 +-
 src/ReC.Application/Common/Behaviors/HeaderQueryBehavior.cs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/ReC.Application/Common/Behaviors/BodyQueryBehavior.cs b/src/ReC.Application/Common/Behaviors/BodyQueryBehavior.cs
index 77ed91c..4dbb232 100644
--- a/src/ReC.Application/Common/Behaviors/BodyQueryBehavior.cs
+++ b/src/ReC.Application/Common/Behaviors/BodyQueryBehavior.cs
@@ -13,7 +13,7 @@ public class BodyQueryBehavior<TRecAction>(IRecDbContext dbContext) : IPipelineB
         if (action.BodyQuery is null)
             return await next(cancel);
 
-        var result = await dbContext.BodyQueryResults.FromSqlRaw(action.BodyQuery).FirstOrDefaultAsync(cancel);
+        var result = await dbContext.BodyQueryResults.FromSqlRaw(action.BodyQuery).SingleOrDefaultAsync(cancel);
         action.Body = result?.RawBody;
 
         return await next(cancel);
diff --git a/src/ReC.Application/Common/Behaviors/HeaderQueryBehavior.cs b/src/ReC.Application/Common/Behaviors/HeaderQueryBehavior.cs
index 8149416..32d5c15 100644
--- a/src/ReC.Application/Common/Behaviors/HeaderQueryBehavior.cs
+++ b/src/ReC.Application/Common/Behaviors/HeaderQueryBehavior.cs
@@ -15,7 +15,7 @@ public class HeaderQueryBehavior<TRecAction>(IRecDbContext dbContext, ILogger<He
         if (action.HeaderQuery is null)
             return await next(cancel);
 
-        var result = await dbContext.HeaderQueryResults.FromSqlRaw(action.HeaderQuery).FirstOrDefaultAsync(cancel);
+        var result = await dbContext.HeaderQueryResults.FromSqlRaw(action.HeaderQuery).SingleOrDefaultAsync(cancel);
 
         if(result?.RawHeader is null)
             return await next(cancel);