Merge pull request #9319 from Bond-009/alternate

Emby.Naming/Video/VideoListResolver.cs

@@ -106,6 +106,7 @@ namespace Emby.Naming.Video
             }
 
             // Cannot use Span inside local functions and delegates thus we cannot use LINQ here nor merge with the above [if]
+            VideoInfo? primary = null;
             for (var i = 0; i < videos.Count; i++)
             {
                 var video = videos[i];
@@ -118,25 +119,24 @@ namespace Emby.Naming.Video
                 {
                     return videos;
                 }
+
+                if (folderName.Equals(Path.GetFileNameWithoutExtension(video.Files[0].Path.AsSpan()), StringComparison.Ordinal))
+                {
+                    primary = video;
+                }
             }
 
             // The list is created and overwritten in the caller, so we are allowed to do in-place sorting
             videos.Sort((x, y) => string.Compare(x.Name, y.Name, StringComparison.Ordinal));
+            primary ??= videos[0];
+            videos.Remove(primary);
 
             var list = new List<VideoInfo>
             {
-                videos[0]
+                primary
             };
 
-            var alternateVersionsLen = videos.Count - 1;
-            var alternateVersions = new VideoFileInfo[alternateVersionsLen];
-            for (int i = 0; i < alternateVersionsLen; i++)
-            {
-                var video = videos[i + 1];
-                alternateVersions[i] = video.Files[0];
-            }
-
-            list[0].AlternateVersions = alternateVersions;
+            list[0].AlternateVersions = videos.Select(x => x.Files[0]).ToArray();
             list[0].Name = folderName.ToString();
 
             return list;

tests/Jellyfin.Naming.Tests/Video/MultiVersionTests.cs

@@ -323,6 +323,25 @@ namespace Jellyfin.Naming.Tests.Video
             Assert.Single(result[0].AlternateVersions);
         }
 
+        [Fact]
+        public void TestMultiVersion12()
+        {
+            var files = new[]
+            {
+                @"/movies/X-Men Apocalypse (2016)/X-Men Apocalypse (2016) - 1080p.mkv",
+                @"/movies/X-Men Apocalypse (2016)/X-Men Apocalypse (2016).mkv"
+            };
+
+            var result = VideoListResolver.Resolve(
+                files.Select(i => VideoResolver.Resolve(i, false, _namingOptions)).OfType<VideoFileInfo>().ToList(),
+                _namingOptions).ToList();
+
+            Assert.Single(result);
+            Assert.Equal("/movies/X-Men Apocalypse (2016)/X-Men Apocalypse (2016).mkv", result[0].Files[0].Path);
+            Assert.Single(result[0].AlternateVersions);
+            Assert.Equal("/movies/X-Men Apocalypse (2016)/X-Men Apocalypse (2016) - 1080p.mkv", result[0].AlternateVersions[0].Path);
+        }
+
         [Fact]
         public void Resolve_GivenFolderNameWithBracketsAndHyphens_GroupsBasedOnFolderName()
         {