New: Don't process files during Manual Import if there are more than 100 items

Fixes #5357

Co-Authored-By: Mark McDowall <markus101@users.noreply.github.com>

src/NzbDrone.Core/MediaFiles/MovieImport/Manual/ManualImportService.cs

@@ -108,8 +108,8 @@ namespace NzbDrone.Core.MediaFiles.MovieImport.Manual
                 SceneSource = SceneSource(movie, rootFolder),
                 ExistingFile = movie.Path.IsParentPath(path),
                 Size = _diskProvider.GetFileSize(path),
-                Languages = languages,
+                Languages = (languages?.SingleOrDefault() ?? Language.Unknown) == Language.Unknown ? LanguageParser.ParseLanguages(path) : languages,
-                Quality = quality
+                Quality = quality.Quality == Quality.Unknown ? QualityParser.ParseQuality(path) : quality
             };
 
             return MapItem(_importDecisionMaker.GetDecision(localEpisode, downloadClientItem), rootFolder, downloadId, null);
@@ -140,7 +140,14 @@ namespace NzbDrone.Core.MediaFiles.MovieImport.Manual
                 // Filter paths based on the rootFolder, so files in subfolders that should be ignored are ignored.
                 // It will lead to some extra directories being checked for files, but it saves the processing of them and is cleaner than
                 // teaching FilterPaths to know whether it's processing a file or a folder and changing it's filtering based on that.
+                // If the movie is unknown for the directory and there are more than 100 files in the folder don't process the items before returning.
                 var files = _diskScanService.FilterPaths(rootFolder, _diskScanService.GetVideoFiles(baseFolder, false));
+
+                if (files.Count() > 100)
+                {
+                    return ProcessDownloadDirectory(rootFolder, files);
+                }
+
                 var subfolders = _diskScanService.FilterPaths(rootFolder, _diskProvider.GetDirectories(baseFolder));
 
                 var processedFiles = files.Select(file => ProcessFile(rootFolder, baseFolder, file, downloadId));
@@ -214,6 +221,24 @@ namespace NzbDrone.Core.MediaFiles.MovieImport.Manual
             };
         }
 
+        private List<ManualImportItem> ProcessDownloadDirectory(string rootFolder, List<string> videoFiles)
+        {
+            var items = new List<ManualImportItem>();
+
+            foreach (var file in videoFiles)
+            {
+                var localEpisode = new LocalMovie();
+                localEpisode.Path = file;
+                localEpisode.Quality = new QualityModel(Quality.Unknown);
+                localEpisode.Languages = new List<Language> { Language.Unknown };
+                localEpisode.Size = _diskProvider.GetFileSize(file);
+
+                items.Add(MapItem(new ImportDecision(localEpisode), rootFolder, null, null));
+            }
+
+            return items;
+        }
+
         private bool SceneSource(Movie movie, string folder)
         {
             return !(movie.Path.PathEquals(folder) || movie.Path.IsParentPath(folder));

src/Radarr.Api.V3/ManualImport/ManualImportModule.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using System.Linq;
+using NzbDrone.Core.Languages;
 using NzbDrone.Core.MediaFiles.MovieImport.Manual;
 using NzbDrone.Core.Qualities;
 using Radarr.Api.V3.Movies;
@@ -41,9 +42,17 @@ namespace Radarr.Api.V3.ManualImport
 
                 item.Movie = processedItem.Movie.ToResource(0);
                 item.Rejections = processedItem.Rejections;
+                if (item.Languages.Single() == Language.Unknown)
+                {
                     item.Languages = processedItem.Languages;
                 }
 
+                if (item.Quality?.Quality == Quality.Unknown)
+                {
+                    item.Quality = processedItem.Quality;
+                }
+            }
+
             return items;
         }