update music artist when saving artist

MediaBrowser.Api/ItemUpdateService.cs

@@ -126,6 +126,15 @@ namespace MediaBrowser.Api
             UpdateItem(request, item);
 
             await _libraryManager.UpdateItem(item, ItemUpdateType.MetadataEdit, CancellationToken.None).ConfigureAwait(false);
+
+            var musicArtist = Artist.FindMusicArtist(item, _libraryManager);
+
+            if (musicArtist != null)
+            {
+                UpdateItem(request, musicArtist);
+
+                await _libraryManager.UpdateItem(musicArtist, ItemUpdateType.MetadataEdit, CancellationToken.None).ConfigureAwait(false);
+            }
         }
 
         public void Post(UpdateStudio request)

MediaBrowser.Controller/Entities/Audio/Artist.cs

@@ -1,7 +1,11 @@
-using System.Runtime.Serialization;
+using System.Globalization;
+using System.Linq;
+using MediaBrowser.Controller.Library;
 using MediaBrowser.Model.Dto;
 using System;
 using System.Collections.Generic;
+using System.Runtime.Serialization;
+using MediaBrowser.Model.Entities;
 
 namespace MediaBrowser.Controller.Entities.Audio
 {
@@ -28,5 +32,37 @@ namespace MediaBrowser.Controller.Entities.Audio
 
         [IgnoreDataMember]
         public Dictionary<Guid, ItemByNameCounts> UserItemCounts { get; set; }
+
+        /// <summary>
+        /// Finds the music artist.
+        /// </summary>
+        /// <param name="artist">The artist.</param>
+        /// <param name="libraryManager">The library manager.</param>
+        /// <returns>MusicArtist.</returns>
+        public static MusicArtist FindMusicArtist(Artist artist, ILibraryManager libraryManager)
+        {
+            return FindMusicArtist(artist, libraryManager.RootFolder.RecursiveChildren.OfType<MusicArtist>());
+        }
+
+        /// <summary>
+        /// Finds the music artist.
+        /// </summary>
+        /// <param name="artist">The artist.</param>
+        /// <param name="allMusicArtists">All music artists.</param>
+        /// <returns>MusicArtist.</returns>
+        public static MusicArtist FindMusicArtist(Artist artist, IEnumerable<MusicArtist> allMusicArtists)
+        {
+            var musicBrainzId = artist.GetProviderId(MetadataProviders.Musicbrainz);
+
+            return allMusicArtists.FirstOrDefault(i =>
+            {
+                if (!string.IsNullOrWhiteSpace(musicBrainzId) && string.Equals(musicBrainzId, i.GetProviderId(MetadataProviders.Musicbrainz), StringComparison.OrdinalIgnoreCase))
+                {
+                    return true;
+                }
+
+                return string.Compare(i.Name, artist.Name, CultureInfo.CurrentCulture, CompareOptions.IgnoreNonSpace | CompareOptions.IgnoreCase | CompareOptions.IgnoreSymbols) == 0;
+            });
+        }
     }
 }

MediaBrowser.Providers/Music/LastfmArtistByNameProvider.cs

@@ -3,11 +3,8 @@ using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Entities.Audio;
 using MediaBrowser.Controller.Library;
-using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Logging;
 using MediaBrowser.Model.Serialization;
-using System;
-using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -77,7 +74,7 @@ namespace MediaBrowser.Providers.Music
             var artist = (Artist)item;
 
             // See if we can avoid an http request by finding the matching MusicArtist entity
-            var musicArtist = FindMusicArtist(artist, LibraryManager);
+            var musicArtist = Artist.FindMusicArtist(artist, LibraryManager);
 
             if (musicArtist != null && !force)
             {
@@ -88,29 +85,5 @@ namespace MediaBrowser.Providers.Music
                 await base.FetchLastfmData(item, musicBrainzId, force, cancellationToken).ConfigureAwait(false);
             }
         }
-
-
-        /// <summary>
-        /// Finds the music artist.
-        /// </summary>
-        /// <param name="artist">The artist.</param>
-        /// <param name="libraryManager">The library manager.</param>
-        /// <returns>MusicArtist.</returns>
-        private static MusicArtist FindMusicArtist(Artist artist, ILibraryManager libraryManager)
-        {
-            var musicBrainzId = artist.GetProviderId(MetadataProviders.Musicbrainz);
-
-            return libraryManager.RootFolder.RecursiveChildren
-                .OfType<MusicArtist>()
-                .FirstOrDefault(i =>
-                {
-                    if (!string.IsNullOrWhiteSpace(musicBrainzId) && string.Equals(musicBrainzId, i.GetProviderId(MetadataProviders.Musicbrainz), StringComparison.OrdinalIgnoreCase))
-                    {
-                        return true;
-                    }
-
-                    return false;
-                });
-        }
     }
 }

MediaBrowser.Server.Implementations/Library/Validators/ArtistsValidator.cs

@@ -6,9 +6,7 @@ using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Logging;
 using System;
-using System.Collections.Concurrent;
 using System.Collections.Generic;
-using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Threading;
@@ -85,7 +83,7 @@ namespace MediaBrowser.Server.Implementations.Library.Validators
                 artist.ValidateImages();
                 artist.ValidateBackdrops();
 
-                var musicArtist = FindMusicArtist(artist, allMusicArtists);
+                var musicArtist = Artist.FindMusicArtist(artist, allMusicArtists);
 
                 if (musicArtist != null)
                 {
@@ -235,26 +233,5 @@ namespace MediaBrowser.Server.Implementations.Library.Validators
 
             return returnArtists;
         }
-
-        /// <summary>
-        /// Finds the music artist.
-        /// </summary>
-        /// <param name="artist">The artist.</param>
-        /// <param name="allMusicArtists">All music artists.</param>
-        /// <returns>MusicArtist.</returns>
-        private static MusicArtist FindMusicArtist(Artist artist, IEnumerable<MusicArtist> allMusicArtists)
-        {
-            var musicBrainzId = artist.GetProviderId(MetadataProviders.Musicbrainz);
-
-            return allMusicArtists.FirstOrDefault(i =>
-            {
-                if (!string.IsNullOrWhiteSpace(musicBrainzId) && string.Equals(musicBrainzId, i.GetProviderId(MetadataProviders.Musicbrainz), StringComparison.OrdinalIgnoreCase))
-                {
-                    return true;
-                }
-
-                return string.Compare(i.Name, artist.Name, CultureInfo.CurrentCulture, CompareOptions.IgnoreNonSpace | CompareOptions.IgnoreCase | CompareOptions.IgnoreSymbols) == 0;
-            });
-        }
     }
 }