Fixed: Automatic import of releases when file is not matched to series

(cherry picked from commit e280897bc7f5c55d11714b0c25e7220477c18886)

src/NzbDrone.Core/Datastore/Migration/067_add_additional_info_to_pending_releases.cs

@@ -0,0 +1,14 @@
+using FluentMigrator;
+using NzbDrone.Core.Datastore.Migration.Framework;
+
+namespace NzbDrone.Core.Datastore.Migration
+{
+    [Migration(067)]
+    public class add_additional_info_to_pending_releases : NzbDroneMigrationBase
+    {
+        protected override void MainDbUpgrade()
+        {
+            Alter.Table("PendingReleases").AddColumn("AdditionalInfo").AsString().Nullable();
+        }
+    }
+}

src/NzbDrone.Core/Datastore/TableMapping.cs

@@ -229,6 +229,7 @@ namespace NzbDrone.Core.Datastore
             SqlMapper.AddTypeHandler(new EmbeddedDocumentConverter<ParsedAlbumInfo>());
             SqlMapper.AddTypeHandler(new EmbeddedDocumentConverter<ParsedTrackInfo>());
             SqlMapper.AddTypeHandler(new EmbeddedDocumentConverter<ReleaseInfo>());
+            SqlMapper.AddTypeHandler(new EmbeddedDocumentConverter<PendingReleaseAdditionalInfo>());
             SqlMapper.AddTypeHandler(new EmbeddedDocumentConverter<HashSet<int>>());
             SqlMapper.AddTypeHandler(new OsPathConverter());
             SqlMapper.RemoveTypeMap(typeof(Guid));

src/NzbDrone.Core/Download/CompletedDownloadService.cs

@@ -14,6 +14,7 @@ using NzbDrone.Core.MediaFiles.TrackImport;
 using NzbDrone.Core.Messaging.Events;
 using NzbDrone.Core.Music;
 using NzbDrone.Core.Parser;
+using NzbDrone.Core.Parser.Model;
 
 namespace NzbDrone.Core.Download
 {
@@ -93,8 +94,13 @@ namespace NzbDrone.Core.Download
 
                 if (artist == null)
                 {
-                    trackedDownload.Warn("Artist name mismatch, automatic import is not possible.");
+                    Enum.TryParse(historyItem.Data.GetValueOrDefault(EntityHistory.ARTIST_MATCH_TYPE, ArtistMatchType.Unknown.ToString()), out ArtistMatchType artistMatchType);
-                    return;
+
+                    if (artistMatchType == ArtistMatchType.Id)
+                    {
+                        trackedDownload.Warn("Found matching artist via grab history, but release was matched to artist by ID. Automatic import is not possible.");
+                        return;
+                    }
                 }
             }
 

src/NzbDrone.Core/Download/Pending/PendingRelease.cs

@@ -12,8 +12,14 @@ namespace NzbDrone.Core.Download.Pending
         public ParsedAlbumInfo ParsedAlbumInfo { get; set; }
         public ReleaseInfo Release { get; set; }
         public PendingReleaseReason Reason { get; set; }
+        public PendingReleaseAdditionalInfo AdditionalInfo { get; set; }
 
         // Not persisted
         public RemoteAlbum RemoteAlbum { get; set; }
     }
+
+    public class PendingReleaseAdditionalInfo
+    {
+        public ArtistMatchType ArtistMatchType { get; set; }
+    }
 }

src/NzbDrone.Core/Download/Pending/PendingReleaseService.cs

@@ -300,8 +300,7 @@ namespace NzbDrone.Core.Download.Pending
 
                 List<Album> albums;
 
-                RemoteAlbum knownRemoteAlbum;
+                if (knownRemoteAlbums != null && knownRemoteAlbums.TryGetValue(release.Release.Title, out var knownRemoteAlbum))
-                if (knownRemoteAlbums != null && knownRemoteAlbums.TryGetValue(release.Release.Title, out knownRemoteAlbum))
                 {
                     albums = knownRemoteAlbum.Albums;
                 }
@@ -313,6 +312,7 @@ namespace NzbDrone.Core.Download.Pending
                 release.RemoteAlbum = new RemoteAlbum
                 {
                     Artist = artist,
+                    ArtistMatchType = release.AdditionalInfo?.ArtistMatchType ?? ArtistMatchType.Unknown,
                     Albums = albums,
                     ParsedAlbumInfo = release.ParsedAlbumInfo,
                     Release = release.Release
@@ -336,7 +336,11 @@ namespace NzbDrone.Core.Download.Pending
                 Release = decision.RemoteAlbum.Release,
                 Title = decision.RemoteAlbum.Release.Title,
                 Added = DateTime.UtcNow,
-                Reason = reason
+                Reason = reason,
+                AdditionalInfo = new PendingReleaseAdditionalInfo
+                {
+                    ArtistMatchType = decision.RemoteAlbum.ArtistMatchType
+                }
             });
 
             _eventAggregator.PublishEvent(new PendingReleasesUpdatedEvent());

src/NzbDrone.Core/History/EntityHistory.cs

@@ -9,6 +9,7 @@ namespace NzbDrone.Core.History
     public class EntityHistory : ModelBase
     {
         public const string DOWNLOAD_CLIENT = "downloadClient";
+        public const string ARTIST_MATCH_TYPE = "artistMatchType";
 
         public EntityHistory()
         {

src/NzbDrone.Core/History/EntityHistoryService.cs

@@ -165,6 +165,7 @@ namespace NzbDrone.Core.History
                 history.Data.Add("Protocol", ((int)message.Album.Release.DownloadProtocol).ToString());
                 history.Data.Add("DownloadForced", (!message.Album.DownloadAllowed).ToString());
                 history.Data.Add("CustomFormatScore", message.Album.CustomFormatScore.ToString());
+                history.Data.Add("ArtistMatchType", message.Album.ArtistMatchType.ToString());
 
                 if (!message.Album.ParsedAlbumInfo.ReleaseHash.IsNullOrWhiteSpace())
                 {

src/NzbDrone.Core/Parser/Model/FindArtistResult.cs

@@ -0,0 +1,24 @@
+using NzbDrone.Core.Music;
+
+namespace NzbDrone.Core.Parser.Model
+{
+    public class FindArtistResult
+    {
+        public Artist Artist { get; set; }
+        public ArtistMatchType MatchType { get; set; }
+
+        public FindArtistResult(Artist artist, ArtistMatchType matchType)
+        {
+            Artist = artist;
+            MatchType = matchType;
+        }
+    }
+
+    public enum ArtistMatchType
+    {
+        Unknown = 0,
+        Title = 1,
+        Alias = 2,
+        Id = 3
+    }
+}

src/NzbDrone.Core/Parser/Model/RemoteAlbum.cs

@@ -17,6 +17,7 @@ namespace NzbDrone.Core.Parser.Model
         public TorrentSeedConfiguration SeedConfiguration { get; set; }
         public List<CustomFormat> CustomFormats { get; set; }
         public int CustomFormatScore { get; set; }
+        public ArtistMatchType ArtistMatchType { get; set; }
 
         public RemoteAlbum()
         {

src/NzbDrone.Core/Parser/ParsingService.cs

@@ -103,7 +103,15 @@ namespace NzbDrone.Core.Parser
                 ParsedAlbumInfo = parsedAlbumInfo,
             };
 
-            var artist = GetArtist(parsedAlbumInfo, searchCriteria);
+            Artist artist = null;
+
+            var artistMatch = FindArtist(parsedAlbumInfo, searchCriteria);
+
+            if (artistMatch != null)
+            {
+                artist = artistMatch.Artist;
+                remoteAlbum.ArtistMatchType = artistMatch.MatchType;
+            }
 
             if (artist == null)
             {
@@ -188,7 +196,7 @@ namespace NzbDrone.Core.Parser
             };
         }
 
-        private Artist GetArtist(ParsedAlbumInfo parsedAlbumInfo, SearchCriteriaBase searchCriteria)
+        private FindArtistResult FindArtist(ParsedAlbumInfo parsedAlbumInfo, SearchCriteriaBase searchCriteria)
         {
             Artist artist = null;
 
@@ -196,16 +204,27 @@ namespace NzbDrone.Core.Parser
             {
                 if (searchCriteria.Artist.CleanName == parsedAlbumInfo.ArtistName.CleanArtistName())
                 {
-                    return searchCriteria.Artist;
+                    return new FindArtistResult(searchCriteria.Artist, ArtistMatchType.Title);
                 }
             }
 
+            var matchType = ArtistMatchType.Unknown;
             artist = _artistService.FindByName(parsedAlbumInfo.ArtistName);
 
+            if (artist != null)
+            {
+                matchType = ArtistMatchType.Title;
+            }
+
             if (artist == null)
             {
                 _logger.Debug("Trying inexact artist match for {0}", parsedAlbumInfo.ArtistName);
                 artist = _artistService.FindByNameInexact(parsedAlbumInfo.ArtistName);
+
+                if (artist != null)
+                {
+                    matchType = ArtistMatchType.Title;
+                }
             }
 
             if (artist == null)
@@ -214,7 +233,7 @@ namespace NzbDrone.Core.Parser
                 return null;
             }
 
-            return artist;
+            return new FindArtistResult(artist, matchType);
         }
 
         public Album GetLocalAlbum(string filename, Artist artist)