Перепиливание под чистый DDD

backend/src/Modules/Federation/Presentation/Endpoints/FederationEndpoints.cs

@@ -0,0 +1,41 @@
+using Carter;
+using MediatR;
+using Knot.Shared.Kernel.Constants;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Routing;
+using System;
+
+namespace Host.Endpoints;
+
+/// <summary>
+/// Регистрация эндпоинтов федерации.
+/// </summary>
+public sealed class FederationEndpoints : ICarterModule
+{
+    public void AddRoutes(IEndpointRouteBuilder app)
+    {
+        var group = app.MapGroup(Routes.ApiFederation);
+        
+        group.MapPost("/handshake", async ([FromBody] Host.Application.Federation.Commands.HandshakeRequest request, ISender sender, CancellationToken ct) =>
+        {
+            var result = await sender.Send(new Host.Application.Federation.Commands.HandshakeFederationCommand(request), ct);
+            if (result.IsSuccess)
+            {
+                return Results.Ok(result.Value);
+            }
+
+            if (result.Error.Code == "Unauthorized")
+            {
+                return Results.Forbid();
+            }
+            if (result.Error.Code == Knot.Shared.Kernel.Constants.Errors.DisabledByAdmin)
+            {
+                return Results.StatusCode(503);
+            }
+            
+            return Results.BadRequest(new { error = result.Error.Description });
+        });
+    }
+}