Added cache headers to static resources.

NzbDrone.Api/Extensions/ReqResExtensions.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using Nancy;
+using Nancy.Responses;
+using NzbDrone.Common.Serializer;
+
+namespace NzbDrone.Api.Extensions
+{
+    public static class JsonExtensions
+    {
+        private static readonly NancyJsonSerializer NancySerializer = new NancyJsonSerializer();
+
+        public static T FromJson<T>(this Stream body) where T : class, new()
+        {
+            return FromJson<T>(body, typeof(T));
+        }
+
+        public static T FromJson<T>(this Stream body, Type type)
+        {
+            return (T)FromJson(body, type);
+        }
+
+
+        public static object FromJson(this Stream body, Type type)
+        {
+            var reader = new StreamReader(body, true);
+            body.Position = 0;
+            var value = reader.ReadToEnd();
+            return Json.Deserialize(value, type);
+        }
+
+        public static JsonResponse<TModel> AsResponse<TModel>(this TModel model, HttpStatusCode statusCode = HttpStatusCode.OK)
+        {
+            return new JsonResponse<TModel>(model, NancySerializer) { StatusCode = statusCode };
+        }
+
+        public static IDictionary<string, string> DisableCache(this IDictionary<string, string> headers)
+        {
+            headers.Add("Cache-Control", "no-cache, no-store, must-revalidate");
+            headers.Add("Pragma", "no-cache");
+            headers.Add("Expires", "0");
+
+            return headers;
+        }
+
+        public static IDictionary<string, string> EnableCache(this IDictionary<string, string> headers)
+        {
+            headers.Add("Cache-Control", "max-age=31536000 , public");
+            headers.Add("Expires", "Sat, 29 Jun 2020 00:00:00 GMT");
+            headers.Add("Last-Modified", "Sat, 29 Jun 2000 00:00:00 GMT");
+            headers.Add("Age", "193266");
+
+            return headers;
+        }
+    }
+}