added album provider from xml

MediaBrowser.Providers/MediaBrowser.Providers.csproj

@@ -76,6 +76,7 @@
     <Compile Include="Movies\PersonUpdatesPreScanTask.cs" />
     <Compile Include="Movies\MovieDbPersonProvider.cs" />
     <Compile Include="Music\AlbumInfoFromSongProvider.cs" />
+    <Compile Include="Music\AlbumProviderFromXml.cs" />
     <Compile Include="Music\ArtistInfoFromSongProvider.cs" />
     <Compile Include="Music\ArtistProviderFromXml.cs" />
     <Compile Include="Music\FanArtAlbumProvider.cs" />

MediaBrowser.Providers/Music/AlbumProviderFromXml.cs

@@ -0,0 +1,105 @@
+using MediaBrowser.Common.IO;
+using MediaBrowser.Controller.Configuration;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.Audio;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.Logging;
+using System;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Providers.Music
+{
+    class AlbumProviderFromXml : BaseMetadataProvider
+    {
+        public static AlbumProviderFromXml Current;
+        private readonly IFileSystem _fileSystem;
+
+        public AlbumProviderFromXml(ILogManager logManager, IServerConfigurationManager configurationManager, IFileSystem fileSystem)
+            : base(logManager, configurationManager)
+        {
+            _fileSystem = fileSystem;
+            Current = this;
+        }
+
+        /// <summary>
+        /// Supportses the specified item.
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
+        public override bool Supports(BaseItem item)
+        {
+            return item is MusicAlbum && item.LocationType == LocationType.FileSystem;
+        }
+
+        /// <summary>
+        /// Gets the priority.
+        /// </summary>
+        /// <value>The priority.</value>
+        public override MetadataProviderPriority Priority
+        {
+            get { return MetadataProviderPriority.First; }
+        }
+
+        private const string XmlFileName = "album.xml";
+        protected override bool NeedsRefreshBasedOnCompareDate(BaseItem item, BaseProviderInfo providerInfo)
+        {
+            var xml = item.ResolveArgs.GetMetaFileByPath(Path.Combine(item.MetaLocation, XmlFileName));
+
+            if (xml == null)
+            {
+                return false;
+            }
+
+            return _fileSystem.GetLastWriteTimeUtc(xml) > providerInfo.LastRefreshed;
+        }
+
+        /// <summary>
+        /// Fetches metadata and returns true or false indicating if any work that requires persistence was done
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="force">if set to <c>true</c> [force].</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task{System.Boolean}.</returns>
+        public override Task<bool> FetchAsync(BaseItem item, bool force, CancellationToken cancellationToken)
+        {
+            return Fetch(item, cancellationToken);
+        }
+
+        /// <summary>
+        /// Fetches the specified item.
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
+        private async Task<bool> Fetch(BaseItem item, CancellationToken cancellationToken)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+
+            var metadataFile = item.ResolveArgs.GetMetaFileByPath(Path.Combine(item.MetaLocation, XmlFileName));
+
+            if (metadataFile != null)
+            {
+                var path = metadataFile.FullName;
+
+                await XmlParsingResourcePool.WaitAsync(cancellationToken).ConfigureAwait(false);
+
+                try
+                {
+                    new BaseItemXmlParser<MusicAlbum>(Logger).Fetch((MusicAlbum)item, path, cancellationToken);
+                }
+                finally
+                {
+                    XmlParsingResourcePool.Release();
+                }
+
+                SetLastRefreshed(item, DateTime.UtcNow);
+                return true;
+            }
+
+            return false;
+        }
+    }
+}

MediaBrowser.Providers/Music/ArtistProviderFromXml.cs

@@ -2,7 +2,6 @@
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Entities.Audio;
-using MediaBrowser.Controller.IO;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Logging;

MediaBrowser.Providers/Savers/AlbumXmlSaver.cs

@@ -2,7 +2,7 @@
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Entities.Audio;
 using MediaBrowser.Controller.Library;
-using MediaBrowser.Providers.Movies;
+using MediaBrowser.Providers.Music;
 using System;
 using System.Collections.Generic;
 using System.IO;
@@ -61,7 +61,7 @@ namespace MediaBrowser.Providers.Savers
             XmlSaverHelpers.Save(builder, xmlFilePath, new List<string> { });
 
             // Set last refreshed so that the provider doesn't trigger after the file save
-            PersonProviderFromXml.Current.SetLastRefreshed(item, DateTime.UtcNow);
+            AlbumProviderFromXml.Current.SetLastRefreshed(item, DateTime.UtcNow);
         }
 
         /// <summary>