Sla (#11)

Co-authored-by: gorbenko.pavel <gorbenko.pavel@tansu.kz>
Reviewed-on: http://git.tnsu.kz/gorbenko.pavel/tnsu-approval-route/pulls/11

backend/Tnsu.ApprovalRoute.Api/Common/ApiResponse.cs

@@ -0,0 +1,5 @@
+namespace Tnsu.ApprovalRoute.Api.Common;
+
+public sealed record ApiResponse<T>(T Data);
+
+public sealed record ApiError(IReadOnlyList<string> Messages);

backend/Tnsu.ApprovalRoute.Api/Common/ResultExtensions.cs

@@ -0,0 +1,32 @@
+using FluentResults;
+using Microsoft.AspNetCore.Mvc;
+using Tnsu.ApprovalRoute.Application.Common.Errors;
+
+namespace Tnsu.ApprovalRoute.Api.Common;
+
+public static class ResultExtensions
+{
+    public static IActionResult ToActionResult<T>(this Result<T> result)
+    {
+        if (result.IsFailed)
+            return result.Errors[0].ToActionResult();
+
+        return new OkObjectResult(new ApiResponse<T>(result.Value));
+    }
+
+    public static IActionResult ToActionResult(this Result result)
+    {
+        if (result.IsFailed)
+            return result.Errors[0].ToActionResult();
+
+        return new NoContentResult();
+    }
+
+    private static IActionResult ToActionResult(this IError error) => error switch
+    {
+        NotFoundError => new NotFoundObjectResult(new ApiError([error.Message])),
+        ValidationError => new BadRequestObjectResult(new ApiError([error.Message])),
+        ConflictError => new ConflictObjectResult(new ApiError([error.Message])),
+        _ => new ObjectResult(new ApiError([error.Message])) { StatusCode = StatusCodes.Status500InternalServerError }
+    };
+}