From 52b1b57e5d1740d4bcb4b4c361d49d7bd00f0d6b Mon Sep 17 00:00:00 2001
From: halgari <tbaldridge@gmail.com>
Date: Tue, 17 Dec 2019 21:30:36 -0700
Subject: [PATCH] UI wasn't prompting for a new download when the list was
 updated

---
 Wabbajack.Common/Utils.cs                        | 4 ++--
 Wabbajack.Lib/ModListRegistry/ModListMetadata.cs | 2 +-
 Wabbajack/View Models/ModListMetadataVM.cs       | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/Wabbajack.Common/Utils.cs b/Wabbajack.Common/Utils.cs
index 5cb77972..e4eeeadb 100644
--- a/Wabbajack.Common/Utils.cs
+++ b/Wabbajack.Common/Utils.cs
@@ -150,7 +150,7 @@ namespace Wabbajack.Common
             }
         }
 
-        public static string FileHashCached(this string file)
+        public static string FileHashCached(this string file, bool nullOnIOError = false)
         {
             var hashPath = file + Consts.HashFileExtension;
             if (File.Exists(hashPath) && File.GetLastWriteTime(file) <= File.GetLastWriteTime(hashPath))
@@ -158,7 +158,7 @@ namespace Wabbajack.Common
                 return File.ReadAllText(hashPath);
             }
 
-            var hash = file.FileHash();
+            var hash = file.FileHash(nullOnIOError);
             File.WriteAllText(hashPath, hash);
             return hash;
         }
diff --git a/Wabbajack.Lib/ModListRegistry/ModListMetadata.cs b/Wabbajack.Lib/ModListRegistry/ModListMetadata.cs
index 311a7cbc..c42f54c8 100644
--- a/Wabbajack.Lib/ModListRegistry/ModListMetadata.cs
+++ b/Wabbajack.Lib/ModListRegistry/ModListMetadata.cs
@@ -91,7 +91,7 @@ namespace Wabbajack.Lib.ModListRegistry
             {
                 return true;
             }
-            return DownloadMetadata.Hash != modlistPath.FileHashCached();
+            return DownloadMetadata.Hash != modlistPath.FileHashCached(true);
         }
     }
 
diff --git a/Wabbajack/View Models/ModListMetadataVM.cs b/Wabbajack/View Models/ModListMetadataVM.cs
index 1f8636ef..a719600f 100644
--- a/Wabbajack/View Models/ModListMetadataVM.cs	
+++ b/Wabbajack/View Models/ModListMetadataVM.cs	
@@ -76,7 +76,7 @@ namespace Wabbajack
             _Exists = Observable.Interval(TimeSpan.FromSeconds(0.5))
                 .Unit()
                 .StartWith(Unit.Default)
-                .Select(_ => File.Exists(Location))
+                .Select(_ => !metadata.NeedsDownload(Location))
                 .ToProperty(this, nameof(Exists));
         }