Add backload for multiple file upload

Web/Backload/Helper/ResultCreator.cs

@@ -0,0 +1,80 @@
+using Backload.Contracts.Context;
+using System;
+using System.Web;
+using System.Web.Mvc;
+
+namespace Backload.Helper
+{
+    /// <summary>
+    /// This helper class creates the result of type ActionResult from the IBackloadResult object
+    /// </summary>
+    public partial class ResultCreator
+    {
+
+        /// <summary>
+        /// Returns an ActionResult depending on the requested type (Json or file data)
+        /// </summary>
+        /// <param name="result">An IBackloadResult instance</param>
+        /// <returns>An ActionResult instance</returns>
+        public static ActionResult Create(IBackloadResult result)
+        {
+            if ((int)result.HttpStatusCode < 300)
+            {
+                // RequestType.Default: Json output has been requested (default). 
+                // Otherwise a file or a thumbnail (bytes) will be returned.
+                if (result.RequestType == RequestType.Default)
+                    return Create((IFileStatusResult)result);
+                else if ((result.RequestType == RequestType.File) || (result.RequestType == RequestType.Thumbnail))
+                    return Create((IFileDataResult)result);
+            }
+
+            // Http status code >= 300
+            return new HttpStatusCodeResult(result.HttpStatusCode);
+        }
+
+
+
+        /// <summary>
+        /// Creates the Json output for the files handled in this request
+        /// </summary>
+        /// <param name="result">A IFileStatusResult object with client plugin specfic data.</param>
+        /// <returns>JsonResult instance or a http HttpStatusCodeResult to send an http status</returns>
+        public static ActionResult Create(IFileStatusResult result)
+        {
+            // Create Json result from the returned client plugin specific file metadata.
+            if ((result.ClientStatus != null) && (result.Exception == null))
+                return new JsonResult()
+                {
+                    Data = result.ClientStatus,
+                    ContentType = result.ContentType,
+                    ContentEncoding = System.Text.Encoding.UTF8,
+                    MaxJsonLength = Int32.MaxValue,
+                    RecursionLimit = null,
+                    JsonRequestBehavior = JsonRequestBehavior.AllowGet
+                };
+
+
+            // A HttpStatusCodeResult result is returned on errors or if files not have been modified (304)
+            return new HttpStatusCodeResult(result.HttpStatusCode);
+        }
+
+
+
+        /// <summary>
+        /// Handles file data (bytes) if Backload is configured to handle file requests (e.g. thumbsUrlPattern) 
+        /// </summary>
+        /// <param name="result">A IFileDataResult object with file data (bytes).</param>
+        /// <returns>FileContentResult instance or a http HttpStatusCodeResult to send an http status</returns>
+        public static ActionResult Create(IFileDataResult result)
+        {
+            // Create a new FileContentResult from the returned file data.
+            if ((result.FileData != null) && (result.Exception == null))
+                return new FileContentResult(result.FileData, result.ContentType);
+
+
+            // A HttpStatusCodeResult result is returned on errors or if files not have been modified (304)
+            return new HttpStatusCodeResult(result.HttpStatusCode);
+        }
+
+    }
+}