#680 - Support new episode file sorting

MediaBrowser.Server.Implementations/FileSorting/TvFileSorter.cs

@@ -0,0 +1,186 @@
+using MediaBrowser.Controller.Entities.TV;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Controller.Resolvers;
+using MediaBrowser.Model.Configuration;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.Logging;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace MediaBrowser.Server.Implementations.FileSorting
+{
+    public class TvFileSorter
+    {
+        private readonly ILibraryManager _libraryManager;
+        private readonly ILogger _logger;
+
+        public TvFileSorter(ILibraryManager libraryManager, ILogger logger)
+        {
+            _libraryManager = libraryManager;
+            _logger = logger;
+        }
+
+        public void Sort(string path, FileSortingOptions options)
+        {
+            var minFileBytes = options.MinFileSizeMb * 1024 * 1024;
+
+            var allSeries = _libraryManager.RootFolder
+                .RecursiveChildren.OfType<Series>()
+                .Where(i => i.LocationType == LocationType.FileSystem)
+                .ToList();
+
+            var eligibleFiles = new DirectoryInfo(path)
+                .EnumerateFiles("*", SearchOption.AllDirectories)
+                .Where(i => EntityResolutionHelper.IsVideoFile(i.FullName) && i.Length >= minFileBytes)
+                .ToList();
+
+            foreach (var file in eligibleFiles)
+            {
+                SortFile(file.FullName, options, allSeries);
+            }
+
+            if (options.LeftOverFileExtensionsToDelete.Length > 0)
+            {
+                DeleteLeftOverFiles(path, options.LeftOverFileExtensionsToDelete);
+            }
+
+            if (options.DeleteEmptyFolders)
+            {
+                DeleteEmptyFolders(path);
+            }
+        }
+
+        private void SortFile(string path, FileSortingOptions options, IEnumerable<Series> allSeries)
+        {
+            _logger.Info("Sorting file {0}", path);
+
+            var seriesName = TVUtils.GetSeriesNameFromEpisodeFile(path);
+
+            if (!string.IsNullOrEmpty(seriesName))
+            {
+                var season = TVUtils.GetSeasonNumberFromEpisodeFile(path);
+
+                if (season.HasValue)
+                {
+                    // Passing in true will include a few extra regex's
+                    var episode = TVUtils.GetEpisodeNumberFromFile(path, true);
+
+                    if (episode.HasValue)
+                    {
+                        _logger.Debug("Extracted information from {0}. Series name {1}, Season {2}, Episode {3}", path, seriesName, season, episode);
+
+                        SortFile(path, seriesName, season.Value, episode.Value, options, allSeries);
+                    }
+                    else
+                    {
+                        _logger.Warn("Unable to determine episode number from {0}", path);
+                    }
+                }
+                else
+                {
+                    _logger.Warn("Unable to determine season number from {0}", path);
+                }
+            }
+            else
+            {
+                _logger.Warn("Unable to determine series name from {0}", path);
+            }
+        }
+
+        private void SortFile(string path, string seriesName, int seasonNumber, int episodeNumber, FileSortingOptions options, IEnumerable<Series> allSeries)
+        {
+            var series = GetMatchingSeries(seriesName, allSeries);
+
+            if (series == null)
+            {
+                _logger.Warn("Unable to find series in library matching name {0}", seriesName);
+                return;
+            }
+
+            _logger.Info("Sorting file {0} into series {1}", path, series.Path);
+
+            // Proceed to sort the file
+        }
+
+        private Series GetMatchingSeries(string seriesName, IEnumerable<Series> allSeries)
+        {
+            int? yearInName;
+            var nameWithoutYear = seriesName;
+            NameParser.ParseName(nameWithoutYear, out nameWithoutYear, out yearInName);
+
+            return allSeries.Select(i => GetMatchScore(nameWithoutYear, yearInName, i))
+                .Where(i => i.Item2 > 0)
+                .OrderByDescending(i => i.Item2)
+                .Select(i => i.Item1)
+                .FirstOrDefault();
+        }
+
+        private Tuple<Series, int> GetMatchScore(string sortedName, int? year, Series series)
+        {
+            var score = 0;
+
+            if (year.HasValue)
+            {
+                if (series.ProductionYear.HasValue && year.Value == series.ProductionYear.Value)
+                {
+                    score++;
+                }
+            }
+
+            // TODO: Improve this
+            if (string.Equals(sortedName, series.Name, StringComparison.OrdinalIgnoreCase))
+            {
+                score++;
+            }
+
+            return new Tuple<Series, int>(series, score);
+        }
+
+        private void DeleteLeftOverFiles(string path, IEnumerable<string> extensions)
+        {
+            var eligibleFiles = new DirectoryInfo(path)
+                .EnumerateFiles("*", SearchOption.AllDirectories)
+                .Where(i => extensions.Contains(i.Extension, StringComparer.OrdinalIgnoreCase))
+                .ToList();
+
+            foreach (var file in eligibleFiles)
+            {
+                try
+                {
+                    File.Delete(file.FullName);
+                }
+                catch (IOException ex)
+                {
+                    _logger.ErrorException("Error deleting file {0}", ex, file.FullName);
+                }
+            }
+        }
+
+        private void DeleteEmptyFolders(string path)
+        {
+            try
+            {
+                foreach (var d in Directory.EnumerateDirectories(path))
+                {
+                    DeleteEmptyFolders(d);
+                }
+
+                var entries = Directory.EnumerateFileSystemEntries(path);
+
+                if (!entries.Any())
+                {
+                    try
+                    {
+                        Directory.Delete(path);
+                    }
+                    catch (UnauthorizedAccessException) { }
+                    catch (DirectoryNotFoundException) { }
+                }
+            }
+            catch (UnauthorizedAccessException) { }
+        }
+    }
+}