fix library scanning with non-english season folder names (#1222)

CHANGELOG.md

@@ -9,6 +9,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Fixed
 - Fix updating (re-adding) Trakt lists to properly use new metadata ids that were not present when originally added
+- Fix local show library scanning with non-english season folder names, e.g. `Staffel 02`
 
 ### Changed
 - Use Poster artwork for XMLTV if available

ErsatzTV.Core.Tests/Metadata/FallbackMetadataProviderTests.cs

@@ -155,6 +155,8 @@ public class FallbackMetadataProviderTests
     [TestCase(@"/Whatever/American Dad! S01", 1)]
     [TestCase(@"/Whatever/Season 2", 2)]
     [TestCase(@"/Whatever/Season 02", 2)]
+    [TestCase(@"/Whatever/Staffel 2", 2)]
+    [TestCase(@"/Whatever/Staffel 02", 2)]
     [TestCase(@"/Whatever/Seinfeld/S02", 2)]
     [TestCase(@"/Whatever/Seinfeld/2", 2)]
     [TestCase(@"/Whatever/Season 2009", 2009)]

ErsatzTV.Core/Metadata/FallbackMetadataProvider.cs

@@ -19,13 +19,18 @@ public partial class FallbackMetadataProvider : IFallbackMetadataProvider
         {
             return seasonNumber;
         }
-
+        
         Match match = SeasonPattern.Match(folderName);
         if (match.Success && int.TryParse(match.Groups[1].Value, out seasonNumber))
         {
             return seasonNumber;
         }
 
+        if (int.TryParse(folder.Split(" ").Last(), out seasonNumber))
+        {
+            return seasonNumber;
+        }
+        
         if (folder.EndsWith("specials", StringComparison.OrdinalIgnoreCase))
         {
             return 0;