From a3ef04d1f7f2b8f5681a76f11086321a4a625d0b Mon Sep 17 00:00:00 2001
From: Rob Reynolds <ferventcoder@gmail.com>
Date: Fri, 27 May 2016 08:33:34 -0500
Subject: [PATCH] (GH-622) Remove NuGet temp folders

`TEMP\NuGetScratch` and sometimes a `TEMP\x\Nuget` folder are created
by NuGet Core, however it doesn't clean up after itself on this. It is
expected for you to call `OptimizedZipPackage.PurgeCache()`, but this
does not appear to actually remove the folder because PurgeCache is
dependent on the GUID that it creates for the subdirectory. It doesn't
hold a reference to that and so it comes up with one that doesn't exist
by the time we call it.

Handle cleaning up those caches at the end of most runs.
---
 .../runners/GenericRunner.cs                  | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/chocolatey/infrastructure.app/runners/GenericRunner.cs b/src/chocolatey/infrastructure.app/runners/GenericRunner.cs
index d6853a53df..7a0d9c84f4 100644
--- a/src/chocolatey/infrastructure.app/runners/GenericRunner.cs
+++ b/src/chocolatey/infrastructure.app/runners/GenericRunner.cs
@@ -19,6 +19,7 @@ namespace chocolatey.infrastructure.app.runners
     using System;
     using System.Linq;
     using System.Collections.Generic;
+    using filesystem;
     using SimpleInjector;
     using adapters;
     using attributes;
@@ -139,6 +140,28 @@ public void run(ChocolateyConfiguration config, Container container, bool isCons
                 this.Log().Debug("_ {0}:{1} - Normal Run Mode _".format_with(ApplicationParameters.Name, command.GetType().Name));
                 command.run(config);
             }
+
+            remove_nuget_cache(container);
+        }
+
+        /// <summary>
+        /// if there is a NuGetScratch cache found, kill it with fire
+        /// </summary>
+        /// <param name="container">The container.</param>
+        private void remove_nuget_cache(Container container)
+        {
+            try
+            {
+                var fileSystem = container.GetInstance<IFileSystem>();
+                var scratch = fileSystem.combine_paths(fileSystem.get_temp_path(), "NuGetScratch");
+                fileSystem.delete_directory_if_exists(scratch, recursive: true, overrideAttributes: true, isSilent: true);
+                var nugetX = fileSystem.combine_paths(fileSystem.get_temp_path(), "x", "nuget");
+                fileSystem.delete_directory_if_exists(nugetX, recursive: true, overrideAttributes: true, isSilent: true);
+            }
+            catch (Exception ex)
+            {
+                this.Log().Debug(ChocolateyLoggers.Important, "Not able to cleanup NuGet temp folders. Failure was {0}".format_with(ex.Message));
+            }
         }
 
         public IEnumerable<T> list<T>(ChocolateyConfiguration config, Container container, bool isConsole, Action<ICommand> parseArgs)