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StopShopping.Api/Middlewares/ProblemDetailsExtensions.cs

@@ -0,0 +1,23 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace StopShopping.Api.Middlewares;
+
+public static class ProblemDetailsExtensions
+{
+    private const string CODE_FIELD = "code";
+    public static ProblemDetails AddErrorCode(this ProblemDetails problemDetails, ProblemDetailsCodes code)
+    {
+        problemDetails.Extensions ??= new Dictionary<string, object?>();
+
+        problemDetails.Extensions.Add(CODE_FIELD, (int)code);
+        return problemDetails;
+    }
+}
+
+public enum ProblemDetailsCodes
+{
+    CsrfValidationFailed = 1000,
+    ParametersValidationFailed = 1001,
+    BadParameters = 1002,
+    ServerError = 1003,
+}