New: Backend changes for new UI

src/Radarr.Http/ErrorManagement/ErrorHandler.cs

@@ -0,0 +1,35 @@
+using Nancy;
+using Nancy.ErrorHandling;
+using Radarr.Http.Extensions;
+
+namespace Radarr.Http.ErrorManagement
+{
+    public class ErrorHandler : IStatusCodeHandler
+    {
+        public bool HandlesStatusCode(HttpStatusCode statusCode, NancyContext context)
+        {
+            return true;
+        }
+
+        public void Handle(HttpStatusCode statusCode, NancyContext context)
+        {
+            if (statusCode == HttpStatusCode.SeeOther || statusCode == HttpStatusCode.OK)
+                return;
+
+            if (statusCode == HttpStatusCode.Continue)
+            {
+                context.Response = new Response { StatusCode = statusCode };
+                return;
+            }
+
+            if (statusCode == HttpStatusCode.Unauthorized)
+                return;
+
+            if (context.Response.ContentType == "text/html" || context.Response.ContentType == "text/plain")
+                context.Response = new ErrorModel
+                    {
+                            Message = statusCode.ToString()
+                    }.AsResponse(statusCode);
+        }
+    }
+}

src/Radarr.Http/ErrorManagement/ErrorModel.cs

@@ -0,0 +1,21 @@
+using Radarr.Http.Exceptions;
+
+namespace Radarr.Http.ErrorManagement
+{
+    public class ErrorModel
+    {
+        public string Message { get; set; }
+        public string Description { get; set; }
+        public object Content { get; set; }
+
+        public ErrorModel(ApiException exception)
+        {
+            Message = exception.Message;
+            Content = exception.Content;
+        }
+
+        public ErrorModel()
+        {
+        }
+    }
+}

src/Radarr.Http/ErrorManagement/RadarrErrorPipeline.cs

@@ -0,0 +1,79 @@
+using System;
+using System.Data.SQLite;
+using FluentValidation;
+using Nancy;
+using NLog;
+using NzbDrone.Core.Exceptions;
+using Radarr.Http.Exceptions;
+using Radarr.Http.Extensions;
+using HttpStatusCode = Nancy.HttpStatusCode;
+
+namespace Radarr.Http.ErrorManagement
+{
+    public class RadarrErrorPipeline
+    {
+        private readonly Logger _logger;
+
+        public RadarrErrorPipeline(Logger logger)
+        {
+            _logger = logger;
+        }
+
+        public Response HandleException(NancyContext context, Exception exception)
+        {
+            _logger.Trace("Handling Exception");
+
+            var apiException = exception as ApiException;
+
+            if (apiException != null)
+            {
+                _logger.Warn(apiException, "API Error");
+                return apiException.ToErrorResponse();
+            }
+
+            var validationException = exception as ValidationException;
+
+            if (validationException != null)
+            {
+                _logger.Warn("Invalid request {0}", validationException.Message);
+
+                return validationException.Errors.AsResponse(HttpStatusCode.BadRequest);
+            }
+
+            var clientException = exception as NzbDroneClientException;
+
+            if (clientException != null)
+            {
+                return new ErrorModel
+                {
+                    Message = exception.Message,
+                    Description = exception.ToString()
+                }.AsResponse((HttpStatusCode)clientException.StatusCode);
+            }
+
+            var sqLiteException = exception as SQLiteException;
+
+            if (sqLiteException != null)
+            {
+                if (context.Request.Method == "PUT" || context.Request.Method == "POST")
+                {
+                    if (sqLiteException.Message.Contains("constraint failed"))
+                        return new ErrorModel
+                        {
+                            Message = exception.Message,
+                        }.AsResponse(HttpStatusCode.Conflict);
+                }
+
+                _logger.Error(sqLiteException, "[{0} {1}]", context.Request.Method, context.Request.Path);
+            }
+
+            _logger.Fatal(exception, "Request Failed. {0} {1}", context.Request.Method, context.Request.Path);
+
+            return new ErrorModel
+            {
+                Message = exception.Message,
+                Description = exception.ToString()
+            }.AsResponse(HttpStatusCode.InternalServerError);
+        }
+    }
+}