From 150d7b046adaeb93aa7d19f3a5a7e4e9a296f79b Mon Sep 17 00:00:00 2001
From: Qstick <qstick@gmail.com>
Date: Thu, 23 Dec 2021 13:47:01 -0600
Subject: [PATCH] New: Additional logging for InvalidModel BadRequest API calls

---
 src/NzbDrone.Host/Startup.cs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/NzbDrone.Host/Startup.cs b/src/NzbDrone.Host/Startup.cs
index b94d25e9f..e8a57b1d4 100644
--- a/src/NzbDrone.Host/Startup.cs
+++ b/src/NzbDrone.Host/Startup.cs
@@ -10,6 +10,7 @@ using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.HttpOverrides;
+using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
@@ -110,6 +111,21 @@ namespace NzbDrone.Host
             });
 
             services.AddAppAuthentication();
+
+            services.PostConfigure<ApiBehaviorOptions>(options =>
+            {
+                var builtInFactory = options.InvalidModelStateResponseFactory;
+
+                options.InvalidModelStateResponseFactory = context =>
+                {
+                    var loggerFactory = context.HttpContext.RequestServices.GetRequiredService<ILoggerFactory>();
+                    var logger = loggerFactory.CreateLogger(context.ActionDescriptor.DisplayName);
+
+                    logger.LogError(STJson.ToJson(context.ModelState));
+
+                    return builtInFactory(context);
+                };
+            });
         }
 
         public void Configure(IApplicationBuilder app,