fix patch

docs/schema/V1/swagger.verified.json

@@ -6086,7 +6086,12 @@
         },
         "responses": {
           "204": {
-            "description": "Patch was successfully applied."
+            "description": "Patch was successfully applied.",
+            "headers": {
+              "Etag": {
+                "description": "The new UUID ETag of the dialog"
+              }
+            }
           },
           "400": {
             "content": {

src/Digdir.Domain.Dialogporten.WebApi/Endpoints/V1/ServiceOwner/DialogTransmissions/Create/CreateDialogTransmissionEndpoint.cs

@@ -4,7 +4,6 @@
 using Digdir.Domain.Dialogporten.WebApi.Common.Authorization;
 using Digdir.Domain.Dialogporten.WebApi.Common.Extensions;
 using Digdir.Domain.Dialogporten.WebApi.Endpoints.V1.Common.Extensions;
-using Digdir.Domain.Dialogporten.WebApi.Endpoints.V1.Common.Headers;
 using Digdir.Domain.Dialogporten.WebApi.Endpoints.V1.ServiceOwner.DialogTransmissions.Get;
 using Digdir.Library.Entity.Abstractions.Features.Identifiable;
 using FastEndpoints;

src/Digdir.Domain.Dialogporten.WebApi/Endpoints/V1/ServiceOwner/Dialogs/Patch/PatchDialogsController.cs

@@ -60,6 +60,7 @@ public PatchDialogsController(ISender sender, IMapper mapper)
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status412PreconditionFailed)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status422UnprocessableEntity)]
+    [ProducesResponseHeader(StatusCodes.Status204NoContent, Constants.ETag, "The new UUID ETag of the dialog")]
     public async Task<IActionResult> Patch(
         [FromRoute] Guid dialogId,
         [FromHeader(Name = Constants.IfMatch)] Guid? etag,

src/Digdir.Domain.Dialogporten.WebApi/Endpoints/V1/ServiceOwner/Dialogs/Patch/ProducesResponseHeaderAttribute.cs

@@ -0,0 +1,16 @@
+namespace Digdir.Domain.Dialogporten.WebApi.Endpoints.V1.ServiceOwner.Dialogs.Patch;
+
+[AttributeUsage(AttributeTargets.Method, AllowMultiple = true)]
+public sealed class ProducesResponseHeaderAttribute : Attribute
+{
+    public ProducesResponseHeaderAttribute(int statusCode, string headerName, string description)
+    {
+        HeaderName = headerName;
+        StatusCode = statusCode;
+        Description = description;
+    }
+
+    public string HeaderName { get; }
+    public int StatusCode { get; }
+    public string Description { get; }
+}

src/Digdir.Domain.Dialogporten.WebApi/Endpoints/V1/ServiceOwner/Dialogs/Patch/ProducesResponseHeaderOperationProcessor.cs

@@ -0,0 +1,29 @@
+using System.Globalization;
+using System.Reflection;
+using NSwag;
+using NSwag.Generation.Processors;
+using NSwag.Generation.Processors.Contexts;
+
+namespace Digdir.Domain.Dialogporten.WebApi.Endpoints.V1.ServiceOwner.Dialogs.Patch;
+
+public sealed class ProducesResponseHeaderOperationProcessor : IOperationProcessor
+{
+    public bool Process(OperationProcessorContext context)
+    {
+        var headerAttribute = context.MethodInfo.GetCustomAttribute<ProducesResponseHeaderAttribute>();
+        if (headerAttribute == null)
+        {
+            return true;
+        }
+
+        var statusCode = headerAttribute.StatusCode.ToString(CultureInfo.InvariantCulture);
+        var response = context.OperationDescription.Operation.Responses[statusCode];
+        var header = new OpenApiHeader
+        {
+            Description = headerAttribute.Description,
+        };
+
+        response.Headers.Add(headerAttribute.HeaderName, header);
+        return true;
+    }
+}

src/Digdir.Domain.Dialogporten.WebApi/Program.cs

@@ -9,12 +9,12 @@
 using Digdir.Domain.Dialogporten.Application.Externals.Presentation;
 using Digdir.Domain.Dialogporten.WebApi.Common.Extensions;
 using Digdir.Domain.Dialogporten.Infrastructure;
-using Digdir.Domain.Dialogporten.WebApi;
 using Digdir.Domain.Dialogporten.WebApi.Common;
 using Digdir.Domain.Dialogporten.WebApi.Common.Authentication;
 using Digdir.Domain.Dialogporten.WebApi.Common.Authorization;
 using Digdir.Domain.Dialogporten.WebApi.Common.Json;
 using Digdir.Domain.Dialogporten.WebApi.Common.Swagger;
+using Digdir.Domain.Dialogporten.WebApi.Endpoints.V1.ServiceOwner.Dialogs.Patch;
 using Digdir.Library.Utils.AspNet;
 using FastEndpoints;
 using FastEndpoints.Swagger;
@@ -125,6 +125,9 @@ static void BuildAndRun(string[] args, TelemetryConfiguration telemetryConfigura
                 // generic "2" suffix duplicate names get, so we add a "SO" suffix to the serviceowner specific schemas.
                 // This should match the operationIds used for service owners.
                 s.AddServiceOwnerSuffixToSchemas();
+
+                // Adding ResponseHeaders for PATCH MVC controller
+                s.OperationProcessors.Add(new ProducesResponseHeaderOperationProcessor());
             };
         })
         .AddControllers(options => options.InputFormatters.Insert(0, JsonPatchInputFormatter.Get()))