From efe9fa8a8d7806cee7478a16152d7987c4b51ef5 Mon Sep 17 00:00:00 2001
From: Luke Pulverenti <luke.pulverenti@gmail.com>
Date: Thu, 19 May 2016 15:57:30 -0400
Subject: [PATCH] update playlist

---
 .../Entities/AggregateFolder.cs               |  2 +-
 .../Entities/CollectionFolder.cs              | 46 ++++++++++++++-----
 2 files changed, 35 insertions(+), 13 deletions(-)

diff --git a/MediaBrowser.Controller/Entities/AggregateFolder.cs b/MediaBrowser.Controller/Entities/AggregateFolder.cs
index 3efe46bad8..588a65e98d 100644
--- a/MediaBrowser.Controller/Entities/AggregateFolder.cs
+++ b/MediaBrowser.Controller/Entities/AggregateFolder.cs
@@ -127,9 +127,9 @@ namespace MediaBrowser.Controller.Entities
                 args.FileSystemDictionary = fileSystemDictionary;
             }
 
+            _requiresRefresh = _requiresRefresh || !args.PhysicalLocations.SequenceEqual(PhysicalLocations);
             if (setPhysicalLocations)
             {
-                _requiresRefresh = !args.PhysicalLocations.SequenceEqual(PhysicalLocations);
                 PhysicalLocationsList = args.PhysicalLocations.ToList();
             }
 
diff --git a/MediaBrowser.Controller/Entities/CollectionFolder.cs b/MediaBrowser.Controller/Entities/CollectionFolder.cs
index 84fd6df5ee..b81276ae71 100644
--- a/MediaBrowser.Controller/Entities/CollectionFolder.cs
+++ b/MediaBrowser.Controller/Entities/CollectionFolder.cs
@@ -83,7 +83,34 @@ namespace MediaBrowser.Controller.Entities
 
         protected override IEnumerable<FileSystemMetadata> GetFileSystemChildren(IDirectoryService directoryService)
         {
-            return CreateResolveArgs(directoryService).FileSystemChildren;
+            return CreateResolveArgs(directoryService, true).FileSystemChildren;
+        }
+
+        private bool _requiresRefresh;
+        public override bool RequiresRefresh()
+        {
+            var changed = base.RequiresRefresh() || _requiresRefresh;
+
+            if (!changed)
+            {
+                var locations = PhysicalLocations.ToList();
+
+                var newLocations = CreateResolveArgs(new DirectoryService(BaseItem.FileSystem), false).PhysicalLocations.ToList();
+
+                if (!locations.SequenceEqual(newLocations))
+                {
+                    changed = true;
+                }
+            }
+
+            return changed;
+        }
+
+        public override bool BeforeMetadataRefresh()
+        {
+            var changed = base.BeforeMetadataRefresh() || _requiresRefresh;
+            _requiresRefresh = false;
+            return changed;
         }
 
         internal override bool IsValidFromResolver(BaseItem newItem)
@@ -101,7 +128,7 @@ namespace MediaBrowser.Controller.Entities
             return base.IsValidFromResolver(newItem);
         }
 
-        private ItemResolveArgs CreateResolveArgs(IDirectoryService directoryService)
+        private ItemResolveArgs CreateResolveArgs(IDirectoryService directoryService, bool setPhysicalLocations)
         {
             var path = ContainingFolderPath;
 
@@ -135,7 +162,11 @@ namespace MediaBrowser.Controller.Entities
                 args.FileSystemDictionary = fileSystemDictionary;
             }
 
-            PhysicalLocationsList = args.PhysicalLocations.ToList();
+            _requiresRefresh = _requiresRefresh || !args.PhysicalLocations.SequenceEqual(PhysicalLocations);
+            if (setPhysicalLocations)
+            {
+                PhysicalLocationsList = args.PhysicalLocations.ToList();
+            }
 
             return args;
         }
@@ -153,15 +184,6 @@ namespace MediaBrowser.Controller.Entities
         /// <returns>Task.</returns>
         protected override Task ValidateChildrenInternal(IProgress<double> progress, CancellationToken cancellationToken, bool recursive, bool refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService)
         {
-            var list = PhysicalLocationsList.ToList();
-
-            CreateResolveArgs(directoryService);
-
-            if (!list.SequenceEqual(PhysicalLocationsList))
-            {
-                return UpdateToRepository(ItemUpdateType.MetadataImport, cancellationToken);
-            }
-
             return Task.FromResult(true);
         }