fix: better media folder mapping logic

Check all ≥101 (up from ≥100) locations for a match before deciding on a mapping between the media folder and import folder, instead of picking the first found match. This will help in cases where some files have multiple locations with the same file name but different relative paths.

Fixes #68

Shokofin/Configuration/MediaFolderConfigurationService.cs

@@ -394,9 +394,10 @@ private async Task<MediaFolderConfiguration> CreateConfigurationForPath(Guid lib
             mediaFolderConfig.ImportFolderRelativePath = string.Empty;
         }
         else {
+            var foundLocations = new List<(int, string)>();
             var samplePaths = FileSystem.GetFilePaths(mediaFolder.Path, true)
                 .Where(path => NamingOptions.VideoFileExtensions.Contains(Path.GetExtension(path)))
-                .Take(100)
+                .Take(101) // 101 as a tie breaker
                 .ToList();
 
             Logger.LogDebug("Asking remote server if it knows any of the {Count} sampled files in {Path}. (Library={LibraryId})", samplePaths.Count > 100 ? 100 : samplePaths.Count, mediaFolder.Path, libraryId);
@@ -416,9 +417,19 @@ private async Task<MediaFolderConfiguration> CreateConfigurationForPath(Guid lib
                     continue;
 
                 var fileLocation = fileLocations[0];
-                mediaFolderConfig.ImportFolderId = fileLocation.ImportFolderId;
-                mediaFolderConfig.ImportFolderRelativePath = fileLocation.RelativePath[..^partialPath.Length];
-                break;
+                foundLocations.Add((fileLocation.ImportFolderId, fileLocation.RelativePath[..^partialPath.Length]));
+            }
+
+            if (foundLocations.Count > 0) {
+                var groupedLocations = foundLocations
+                    .GroupBy(x => x)
+                    .ToDictionary(x => x.Key, x => x.Count());
+                foreach (var ((importFolderId, relativePath), count) in groupedLocations) {
+                    Logger.LogDebug("Found {Count} hits for import folder {Id} at relative path {RelativePath}. (Library={LibraryId})", count, importFolderId, relativePath, libraryId);
+                }
+                (mediaFolderConfig.ImportFolderId, mediaFolderConfig.ImportFolderRelativePath) = groupedLocations
+                    .MaxBy(x => x.Value)!
+                    .Key;
             }
 
             try {