chore: use proper way to override remove root

This is an alternate approach which is more proper, but changes all parts that uses/overrides the original ValidateChildren method

Signed-off-by: gnattu <gnattuoc@me.com>

Emby.Server.Implementations/Library/LibraryManager.cs

@@ -1042,26 +1042,16 @@ namespace Emby.Server.Implementations.Library
                 new Progress<double>(),
                 new MetadataRefreshOptions(new DirectoryService(_fileSystem)),
                 recursive: false,
-                cancellationToken).ConfigureAwait(false);
+                cancellationToken: cancellationToken).ConfigureAwait(false);
 
             await GetUserRootFolder().RefreshMetadata(cancellationToken).ConfigureAwait(false);
 
-            // HACK: override IsRoot here for libraries to be removed
-            if (removeRoot)
-            {
-                GetUserRootFolder().IsRoot = false;
-            }
-
             await GetUserRootFolder().ValidateChildren(
                 new Progress<double>(),
                 new MetadataRefreshOptions(new DirectoryService(_fileSystem)),
                 recursive: false,
-                cancellationToken).ConfigureAwait(false);
-            // HACK: restore IsRoot here after validation
-            if (removeRoot)
-            {
-                GetUserRootFolder().IsRoot = true;
-            }
+                allowRemoveRoot: removeRoot,
+                cancellationToken: cancellationToken).ConfigureAwait(false);
 
             // Quickly scan CollectionFolders for changes
             foreach (var folder in GetUserRootFolder().Children.OfType<Folder>())
@@ -1079,7 +1069,7 @@ namespace Emby.Server.Implementations.Library
             var innerProgress = new Progress<double>(pct => progress.Report(pct * 0.96));
 
             // Validate the entire media library
-            await RootFolder.ValidateChildren(innerProgress, new MetadataRefreshOptions(new DirectoryService(_fileSystem)), recursive: true, cancellationToken).ConfigureAwait(false);
+            await RootFolder.ValidateChildren(innerProgress, new MetadataRefreshOptions(new DirectoryService(_fileSystem)), recursive: true, cancellationToken: cancellationToken).ConfigureAwait(false);
 
             progress.Report(96);
 

MediaBrowser.Controller/Entities/AggregateFolder.cs

@@ -155,11 +155,11 @@ namespace MediaBrowser.Controller.Entities
             return base.GetNonCachedChildren(directoryService).Concat(_virtualChildren);
         }
 
-        protected override async Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
+        protected override async Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, bool allowRemoveRoot, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
         {
             ClearCache();
 
-            await base.ValidateChildrenInternal(progress, recursive, refreshChildMetadata, refreshOptions, directoryService, cancellationToken)
+            await base.ValidateChildrenInternal(progress, recursive, refreshChildMetadata, false, refreshOptions, directoryService, cancellationToken)
                 .ConfigureAwait(false);
 
             ClearCache();

MediaBrowser.Controller/Entities/Audio/MusicArtist.cs

@@ -110,7 +110,7 @@ namespace MediaBrowser.Controller.Entities.Audio
             return base.IsSaveLocalMetadataEnabled();
         }
 
-        protected override Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
+        protected override Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, bool allowRemoveRoot, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
         {
             if (IsAccessedByName)
             {
@@ -118,7 +118,7 @@ namespace MediaBrowser.Controller.Entities.Audio
                 return Task.CompletedTask;
             }
 
-            return base.ValidateChildrenInternal(progress, recursive, refreshChildMetadata, refreshOptions, directoryService, cancellationToken);
+            return base.ValidateChildrenInternal(progress, recursive, refreshChildMetadata, false, refreshOptions, directoryService, cancellationToken);
         }
 
         public override List<string> GetUserDataKeys()

MediaBrowser.Controller/Entities/CollectionFolder.cs

@@ -316,11 +316,12 @@ namespace MediaBrowser.Controller.Entities
         /// <param name="progress">The progress.</param>
         /// <param name="recursive">if set to <c>true</c> [recursive].</param>
         /// <param name="refreshChildMetadata">if set to <c>true</c> [refresh child metadata].</param>
+        /// <param name="allowRemoveRoot">remove item even this folder is root.</param>
         /// <param name="refreshOptions">The refresh options.</param>
         /// <param name="directoryService">The directory service.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>Task.</returns>
-        protected override Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
+        protected override Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, bool allowRemoveRoot, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
         {
             return Task.CompletedTask;
         }

MediaBrowser.Controller/Entities/Folder.cs

@@ -269,11 +269,12 @@ namespace MediaBrowser.Controller.Entities
         /// <param name="progress">The progress.</param>
         /// <param name="metadataRefreshOptions">The metadata refresh options.</param>
         /// <param name="recursive">if set to <c>true</c> [recursive].</param>
+        /// <param name="allowRemoveRoot">remove item even this folder is root.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>Task.</returns>
-        public Task ValidateChildren(IProgress<double> progress, MetadataRefreshOptions metadataRefreshOptions, bool recursive = true,  CancellationToken cancellationToken = default)
+        public Task ValidateChildren(IProgress<double> progress, MetadataRefreshOptions metadataRefreshOptions, bool recursive = true, bool allowRemoveRoot = false, CancellationToken cancellationToken = default)
         {
-            return ValidateChildrenInternal(progress, recursive, true, metadataRefreshOptions, metadataRefreshOptions.DirectoryService, cancellationToken);
+            return ValidateChildrenInternal(progress, recursive, true, false, metadataRefreshOptions, metadataRefreshOptions.DirectoryService, cancellationToken);
         }
 
         private Dictionary<Guid, BaseItem> GetActualChildrenDictionary()
@@ -307,11 +308,12 @@ namespace MediaBrowser.Controller.Entities
         /// <param name="progress">The progress.</param>
         /// <param name="recursive">if set to <c>true</c> [recursive].</param>
         /// <param name="refreshChildMetadata">if set to <c>true</c> [refresh child metadata].</param>
+        /// <param name="allowRemoveRoot">remove item even this folder is root.</param>
         /// <param name="refreshOptions">The refresh options.</param>
         /// <param name="directoryService">The directory service.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>Task.</returns>
-        protected virtual async Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
+        protected virtual async Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, bool allowRemoveRoot, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
         {
             if (recursive)
             {
@@ -320,7 +322,7 @@ namespace MediaBrowser.Controller.Entities
 
             try
             {
-                await ValidateChildrenInternal2(progress, recursive, refreshChildMetadata, refreshOptions, directoryService, cancellationToken).ConfigureAwait(false);
+                await ValidateChildrenInternal2(progress, recursive, refreshChildMetadata, allowRemoveRoot, refreshOptions, directoryService, cancellationToken).ConfigureAwait(false);
             }
             finally
             {
@@ -343,7 +345,7 @@ namespace MediaBrowser.Controller.Entities
             return true;
         }
 
-        private async Task ValidateChildrenInternal2(IProgress<double> progress, bool recursive, bool refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
+        private async Task ValidateChildrenInternal2(IProgress<double> progress, bool recursive, bool refreshChildMetadata, bool allowRemoveRoot, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
         {
             if (!IsLibraryFolderAccessible(directoryService, this))
             {
@@ -414,8 +416,9 @@ namespace MediaBrowser.Controller.Entities
                     validChildren.Add(child);
                 }
 
+                var shouldNotRemove = IsRoot && !allowRemoveRoot;
                 // If it's an AggregateFolder, don't remove
-                if (!IsRoot && currentChildren.Count != validChildren.Count)
+                if (shouldNotRemove && currentChildren.Count != validChildren.Count)
                 {
                     // That's all the new and changed ones - now see if there are any that are missing
                     var itemsRemoved = currentChildren.Values.Except(validChildren).ToList();
@@ -562,7 +565,7 @@ namespace MediaBrowser.Controller.Entities
         private Task ValidateSubFolders(IList<Folder> children, IDirectoryService directoryService, IProgress<double> progress, CancellationToken cancellationToken)
         {
             return RunTasks(
-                (folder, innerProgress) => folder.ValidateChildrenInternal(innerProgress, true, false, null, directoryService, cancellationToken),
+                (folder, innerProgress) => folder.ValidateChildrenInternal(innerProgress, true, false, false, null, directoryService, cancellationToken),
                 children,
                 progress,
                 cancellationToken);

MediaBrowser.Controller/Entities/UserRootFolder.cs

@@ -117,11 +117,11 @@ namespace MediaBrowser.Controller.Entities
             return base.GetNonCachedChildren(directoryService);
         }
 
-        protected override async Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
+        protected override async Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, bool allowRemoveRoot, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
         {
             ClearCache();
 
-            await base.ValidateChildrenInternal(progress, recursive, refreshChildMetadata, refreshOptions, directoryService, cancellationToken)
+            await base.ValidateChildrenInternal(progress, recursive, refreshChildMetadata, false, refreshOptions, directoryService, cancellationToken)
                 .ConfigureAwait(false);
 
             ClearCache();

MediaBrowser.Controller/Entities/UserView.cs

@@ -6,10 +6,12 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text.Json.Serialization;
+using System.Threading;
 using System.Threading.Tasks;
 using Jellyfin.Data.Entities;
 using Jellyfin.Data.Enums;
 using Jellyfin.Extensions;
+using MediaBrowser.Controller.Providers;
 using MediaBrowser.Controller.TV;
 using MediaBrowser.Model.Querying;
 
@@ -180,7 +182,7 @@ namespace MediaBrowser.Controller.Entities
             return _originalFolderViewTypes.Contains(viewType);
         }
 
-        protected override Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, Providers.MetadataRefreshOptions refreshOptions, Providers.IDirectoryService directoryService, System.Threading.CancellationToken cancellationToken)
+        protected override Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, bool allowRemoveRoot, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
         {
             return Task.CompletedTask;
         }

MediaBrowser.Controller/Playlists/Playlist.cs

@@ -132,7 +132,7 @@ namespace MediaBrowser.Controller.Playlists
             return [];
         }
 
-        protected override Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
+        protected override Task ValidateChildrenInternal(IProgress<double> progress, bool recursive, bool refreshChildMetadata, bool allowRemoveRoot, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
         {
             return Task.CompletedTask;
         }

MediaBrowser.Providers/Manager/ProviderManager.cs

@@ -1106,7 +1106,7 @@ namespace MediaBrowser.Providers.Manager
                 .Where(i => i is not null)
                 .Distinct();
 
-            var musicArtistRefreshTasks = musicArtists.Select(i => i.ValidateChildren(new Progress<double>(), options, true, cancellationToken));
+            var musicArtistRefreshTasks = musicArtists.Select(i => i.ValidateChildren(new Progress<double>(), options, true, false, cancellationToken));
 
             await Task.WhenAll(musicArtistRefreshTasks).ConfigureAwait(false);