From 55ece3d80df982573449996460ecb5c5ce92d202 Mon Sep 17 00:00:00 2001
From: Keivan Beigi <kay.one@gmail.com>
Date: Fri, 19 Apr 2013 17:05:28 -0700
Subject: [PATCH] Introducing Fancy.Nx

---
 NzbDrone.Api/NzbDrone.Api.csproj              |  2 +
 .../QualityType/QualitySizeResource.cs        |  5 +-
 NzbDrone.Api/REST/RestModule.cs               | 89 +++++++++++++++++++
 NzbDrone.Api/REST/RestResource.cs             | 42 +++++++++
 4 files changed, 135 insertions(+), 3 deletions(-)
 create mode 100644 NzbDrone.Api/REST/RestModule.cs
 create mode 100644 NzbDrone.Api/REST/RestResource.cs

diff --git a/NzbDrone.Api/NzbDrone.Api.csproj b/NzbDrone.Api/NzbDrone.Api.csproj
index 3d2f700d3..5d3e88e44 100644
--- a/NzbDrone.Api/NzbDrone.Api.csproj
+++ b/NzbDrone.Api/NzbDrone.Api.csproj
@@ -90,6 +90,8 @@
     <Compile Include="Resolvers\EndTimeResolver.cs" />
     <Compile Include="Resolvers\NextAiringResolver.cs" />
     <Compile Include="Resolvers\NullableDatetimeToString.cs" />
+    <Compile Include="REST\RestModule.cs" />
+    <Compile Include="REST\RestResource.cs" />
     <Compile Include="RootFolders\RootFolderModule.cs" />
     <Compile Include="Seasons\SeasonModule.cs" />
     <Compile Include="Series\SeriesResource.cs" />
diff --git a/NzbDrone.Api/QualityType/QualitySizeResource.cs b/NzbDrone.Api/QualityType/QualitySizeResource.cs
index 08e1a6653..f1dd33c5b 100644
--- a/NzbDrone.Api/QualityType/QualitySizeResource.cs
+++ b/NzbDrone.Api/QualityType/QualitySizeResource.cs
@@ -1,11 +1,10 @@
 using System;
-using System.Linq;
+using NzbDrone.Api.REST;
 
 namespace NzbDrone.Api.QualityType
 {
-    public class QualitySizeResource
+    public class QualitySizeResource : RestResource<QualitySizeResource>
     {
-        public Int32 Id { get; set; }
         public String Name { get; set; }
         public Int32 MinSize { get; set; }
         public Int32 MaxSize { get; set; }
diff --git a/NzbDrone.Api/REST/RestModule.cs b/NzbDrone.Api/REST/RestModule.cs
new file mode 100644
index 000000000..a1b4f0ee0
--- /dev/null
+++ b/NzbDrone.Api/REST/RestModule.cs
@@ -0,0 +1,89 @@
+using System;
+using System.Collections.Generic;
+using Nancy;
+using NzbDrone.Api.Extensions;
+
+namespace NzbDrone.Api.REST
+{
+    public abstract class RestModule<TResource> : NancyModule
+        where TResource : RestResource<TResource>, new()
+    {
+        private const string ROOT_ROUTE = "/";
+        private const string ID_ROUTE = "/{id}";
+
+        protected RestModule()
+            : this(new TResource().ResourceName)
+        {
+
+        }
+
+        protected RestModule(string modulePath)
+            : base(modulePath)
+        {
+            Get[ROOT_ROUTE] = options =>
+            {
+                EnsureImplementation(GetResourceAll);
+                var resource = GetResourceAll();
+                return resource.AsResponse();
+            };
+
+            Get[ID_ROUTE] = options =>
+            {
+                EnsureImplementation(GetResourceById);
+                var resource = GetResourceById(options.Id);
+                return resource.AsResponse();
+            };
+
+            Post[ROOT_ROUTE] = options =>
+            {
+                EnsureImplementation(CreateResource);
+                var resource = CreateResource(ReadFromRequest());
+                return resource.AsResponse(HttpStatusCode.Created);
+            };
+
+            Put[ROOT_ROUTE] = options =>
+            {
+                EnsureImplementation(UpdateResource);
+                var resource = UpdateResource(ReadFromRequest());
+                return resource.AsResponse(HttpStatusCode.Accepted);
+            };
+
+            Delete[ID_ROUTE] = options =>
+            {
+                EnsureImplementation(DeleteResource);
+                DeleteResource(options.Id);
+                return new Response { StatusCode = HttpStatusCode.OK };
+            };
+        }
+
+        protected Action<int> DeleteResource { get; set; }
+        protected Func<int, TResource> GetResourceById { get; set; }
+        protected Func<List<TResource>> GetResourceAll { get; set; }
+        protected Func<TResource, TResource> CreateResource { get; set; }
+        protected Func<TResource, TResource> UpdateResource { get; set; }
+
+        private void EnsureImplementation(Delegate implementation)
+        {
+            if (implementation == null)
+            {
+                throw new NotImplementedException();
+            }
+        }
+
+        private TResource ReadFromRequest()
+        {
+            var resource = Request.Body.FromJson<TResource>();
+
+            if (Request.Method.Equals("POST", StringComparison.InvariantCultureIgnoreCase))
+            {
+                resource.ValidateForPost();
+            }
+            else if (Request.Method.Equals("PUT", StringComparison.InvariantCultureIgnoreCase))
+            {
+                resource.ValidateForPut();
+            }
+
+            return resource;
+        }
+    }
+}
\ No newline at end of file
diff --git a/NzbDrone.Api/REST/RestResource.cs b/NzbDrone.Api/REST/RestResource.cs
new file mode 100644
index 000000000..5c93cea88
--- /dev/null
+++ b/NzbDrone.Api/REST/RestResource.cs
@@ -0,0 +1,42 @@
+using FluentValidation;
+
+namespace NzbDrone.Api.REST
+{
+    public abstract class RestResource<T>
+        where T : RestResource<T>, new()
+    {
+
+        public int Id { get; set; }
+
+        public virtual string ResourceName
+        {
+            get
+            {
+                return GetType().Name.ToLower();
+            }
+        }
+
+        protected AbstractValidator<T> PostValidator { get; private set; }
+        protected AbstractValidator<T> PutValidator { get; private set; }
+
+        public RestResource()
+        {
+            PostValidator = new InlineValidator<T>();
+            PutValidator = new InlineValidator<T>();
+
+            PostValidator.RuleFor(m => m.Id).Equal(0);
+            PutValidator.RuleFor(m => m.Id).GreaterThan(0);
+        }
+
+
+        public void ValidateForPost()
+        {
+            PostValidator.ValidateAndThrow((T)this);
+        }
+
+        public void ValidateForPut()
+        {
+            PutValidator.ValidateAndThrow((T)this);
+        }
+    }
+}
\ No newline at end of file