Pd18 (#75)

* fix snip

* add new snippet

* add new snippet

fundamentals/middleware/problem-details-service/Controllers/ValuesController.cs

@@ -15,7 +15,7 @@ public class Values2Controller : ControllerBase
             return BadRequest();
         }
 
-        return Ok(Numerator/Denominator);
+        return Ok(Numerator / Denominator);
     }
 
     // /api/values2 /squareroot/4
@@ -51,7 +51,7 @@ public class ValuesController : ControllerBase
             return BadRequest();
         }
 
-        return Ok(Numerator/Denominator);
+        return Ok(Numerator / Denominator);
     }
 
     // /api/values/squareroot/4
@@ -98,7 +98,7 @@ public class Values3Controller : ControllerBase
                 );
         }
 
-        return Ok(Numerator/Denominator);
+        return Ok(Numerator / Denominator);
     }
 
     // /api/values3/squareroot/4
@@ -131,7 +131,7 @@ public class Values3Controller : ControllerBase
 [ApiController]
 public class Values4Controller : ControllerBase
 {
-    // /api/values3/divide/1/2
+    // /api/values4/divide/1/2
     [HttpGet("{Numerator}/{Denominator}")]
     public IActionResult Divide(double Numerator, double Denominator)
     {
@@ -142,6 +142,6 @@ public class Values4Controller : ControllerBase
     [HttpGet("{radicand}")]
     public IActionResult Squareroot(double radicand)
     {
-            return Ok(Math.Sqrt(radicand));
+        return Ok(Math.Sqrt(radicand));
     }
 }

fundamentals/middleware/problem-details-service/Program.cs

@@ -279,22 +279,33 @@ else
 
             context.Response.ContentType = Text.Plain;
 
+            var title = "Bad Input";
+            var detail = "Invalid input";
+            var type = "https://errors.example.com/badInput";
+
             if (context.RequestServices.GetService<IProblemDetailsService>() is
                 { } problemDetailsService)
             {
                 var exceptionHandlerFeature =
                context.Features.Get<IExceptionHandlerFeature>();
 
-                // Examine exceptionHandlerFeature?.Error for more details.
+                var exceptionType = exceptionHandlerFeature?.Error;
+                if (exceptionType != null &&
+                   exceptionType.Message.Contains("infinity"))
+                {
+                    title = "Arguement exception";
+                    detail = "Invalid input";
+                    type = "https://errors.example.com/arguementException";
+                }
 
                 await problemDetailsService.WriteAsync(new ProblemDetailsContext
                 {
                     HttpContext = context,
                     ProblemDetails =
                 {
-                    Title = "Bad Input",
+                    Title = title,
-                    Detail = "Invalid input",
+                    Detail = detail,
-                    Type = "https://tools.ietf.org/html/rfc7231#section-6.6.1"
+                    Type = type
                 }
                 });
             }