Add BadRequestException for 400 response (#36) (#39)

Author: san127127

src/Kros.AspNetCore/Exceptions/BadRequestException.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Kros.AspNetCore.Exceptions
+{
+    /// <summary>
+    /// Exception is thrown when the user request is invalid.
+    /// </summary>
+    public class BadRequestException : Exception
+    {
+        /// <summary>
+        /// Initializes a new instance of <see cref="BadRequestException"/> class.
+        /// </summary>
+        public BadRequestException()
+            : this(Properties.Resources.BadRequest)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of <see cref="BadRequestException" /> class.
+        /// </summary>
+        /// <param name="message">Message.</param>
+        public BadRequestException(string message)
+            : base(message)
+        {
+        }
+    }
+}

src/Kros.AspNetCore/Middlewares/ErrorHandlingMiddleware.cs

@@ -38,6 +38,10 @@ public async Task Invoke(HttpContext context)
             {
                 await _next.Invoke(context);
             }
+            catch (BadRequestException ex)
+            {
+                SetResponseType(context, ex, StatusCodes.Status400BadRequest);
+            }
             catch (UnauthorizedAccessException ex)
             {
                 SetResponseType(context, ex, StatusCodes.Status401Unauthorized);

src/Kros.AspNetCore/Properties/Resources.Designer.cs

@@ -120,6 +120,9 @@
   <data name="AuthorizationServiceForbiddenRequest" xml:space="preserve">
     <value>Authorization service forbidden this request.</value>
   </data>
+  <data name="BadRequest" xml:space="preserve">
+    <value>User request is invalid.</value>
+  </data>
   <data name="ErrorHandlingMiddleware_StatusCodeChange" xml:space="preserve">
     <value>Exception {0} was thrown during request pipeline. Status code of the response was changed to {1}.</value>
     <comment>0 - Full type name of exception.

src/Kros.AspNetCore/Properties/Resources.resx

@@ -15,6 +15,7 @@ public class ErrorHandlingMiddlewareShould
     {
         private static readonly (Exception ex, int statusCode)[] _knownExceptions = new (Exception, int)[]
         {
+            (new BadRequestException(), StatusCodes.Status400BadRequest),
             (new UnauthorizedAccessException(), StatusCodes.Status401Unauthorized),
             (new ResourceIsForbiddenException(), StatusCodes.Status403Forbidden),
             (new NotFoundException(), StatusCodes.Status404NotFound),