Radicade Public Code

Server/Middleware/FailureEnvelopeMiddleware.cs

@@ -0,0 +1,49 @@
+using RadicadeServer.RecNet.Responses;
+
+namespace RadicadeServer.Middleware
+{
+	public class FailureEnvelopeMiddleware
+	{
+		private readonly RequestDelegate _next;
+
+		public FailureEnvelopeMiddleware(RequestDelegate next)
+		{
+			_next = next;
+		}
+
+		public async Task InvokeAsync(HttpContext context)
+		{
+			await _next(context);
+
+			if (context.Response.HasStarted) return;
+
+			var status = context.Response.StatusCode;
+			if (status < 400 || status > 599) return;
+
+			if (!string.IsNullOrEmpty(context.Response.ContentType) || context.Response.ContentLength > 0) return;
+
+			await context.Response.WriteAsJsonAsync(new Failure(Why(status)));
+		}
+
+		public static string Why(int statusCode) => statusCode switch
+		{
+			400 => "bad request",
+			401 => "unauthorized",
+			403 => "forbidden",
+			404 => "not found",
+			405 => "method not allowed",
+			408 => "request timeout",
+			409 => "conflict",
+			413 => "request too large",
+			415 => "unsupported media type",
+			422 => "unprocessable entity",
+			429 => "too many requests",
+			500 => "internal server error",
+			501 => "not implemented",
+			502 => "bad gateway",
+			503 => "service unavailable",
+			504 => "gateway timeout",
+			_ => "request failed",
+		};
+	}
+}