Add Zip download link

Core/Core.csproj

@@ -61,6 +61,7 @@
     <Reference Include="System" />
     <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System.Core" />
+    <Reference Include="System.IO.Compression" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />

Core/Entities/LeafInput.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.IO;
+using System.IO.Compression;
 using System.Linq;
 
 namespace LeafWeb.Core.Entities
@@ -41,5 +43,24 @@ namespace LeafWeb.Core.Entities
 		{
 			return $"{Id}_{Identifier}";
 		}
+
+		/// <summary>
+		/// Contains all output files in a zip
+		/// </summary>
+		public byte[] GetOutputFileZip()
+		{
+			using (var compressedFileStream = new MemoryStream())
+			using (var archive = new ZipArchive(compressedFileStream, ZipArchiveMode.Create, true))
+			{
+				foreach (var outputFile in OutputFiles)
+				{
+					var entry = archive.CreateEntry(outputFile.Filename);
+					using (var originalFileStream = new MemoryStream(outputFile.Contents))
+					using (var entryStream = entry.Open())
+						originalFileStream.CopyTo(entryStream);
+				}
+				return compressedFileStream.ToArray();
+			}
+		}
 	}
 }

Web/Controllers/LeafInputController.cs

@@ -1,6 +1,10 @@
 using System;
+using System.Collections;
+using System.Collections.Generic;
 using System.IO;
+using System.IO.Compression;
 using System.Linq;
+using System.Runtime.InteropServices.ComTypes;
 using System.Web;
 using System.Web.Mvc;
 using LeafWeb.Core.Entities;
@@ -100,6 +104,15 @@ namespace LeafWeb.Web.Controllers
 			return View("Index", viewModel);
 		}
 
+		public FileContentResult DownloadResults(int d)
+		{
+			var leafInput = DataService.GetLeafInput(d);
+
+			var zip = leafInput.GetOutputFileZip();
+			
+			return new FileContentResult(zip, "application/zip") {FileDownloadName = leafInput.Identifier + ".zip"};
+		}
+
 		private FileInfo[] GetBackloadDirectoryFiles(string directoryName)
 		{
 			var path = Path.Combine(Server.MapPath("~/Files/"), directoryName + "\\");

Web/packages.config

@@ -33,6 +33,7 @@
   <package id="NLog.Config" version="4.2.3" targetFramework="net45" />
   <package id="NLog.Schema" version="4.0.0" targetFramework="net45" />
   <package id="Owin" version="1.0" targetFramework="net45" />
+  <package id="Polly" version="4.2.0" targetFramework="net45" />
   <package id="Twitter.Bootstrap.Less" version="3.3.6" targetFramework="net45" />
   <package id="WebGrease" version="1.6.0" targetFramework="net45" />
 </packages>