New: Import subtitles from sub folders

Closes #2513

src/NzbDrone.Core.Test/Extras/ExtraServiceFixture.cs

@@ -0,0 +1,206 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using FizzWare.NBuilder;
+using Moq;
+using NUnit.Framework;
+using NzbDrone.Common.Disk;
+using NzbDrone.Common.Extensions;
+using NzbDrone.Core.Configuration;
+using NzbDrone.Core.Extras;
+using NzbDrone.Core.Extras.Files;
+using NzbDrone.Core.MediaFiles;
+using NzbDrone.Core.Parser.Model;
+using NzbDrone.Core.Test.Framework;
+using NzbDrone.Core.Tv;
+using NzbDrone.Test.Common;
+
+namespace NzbDrone.Core.Test.Extras
+{
+    [TestFixture]
+    public class ExtraServiceFixture : CoreTest<ExtraService>
+    {
+        private Series _series;
+        private EpisodeFile _episodeFile;
+        private LocalEpisode _localEpisode;
+
+        private string _seriesFolder;
+        private string _episodeFolder;
+
+        private Mock<IManageExtraFiles> _subtitleService;
+        private Mock<IManageExtraFiles> _otherExtraService;
+
+        [SetUp]
+        public void Setup()
+        {
+            _seriesFolder = @"C:\Test\TV\Series Title".AsOsAgnostic();
+            _episodeFolder = @"C:\Test\Unsorted TV\Series.Title.S01".AsOsAgnostic();
+
+            _series = Builder<Series>.CreateNew()
+                                     .With(s => s.Path = _seriesFolder)
+                                     .Build();
+
+            var episodes = Builder<Episode>.CreateListOfSize(1)
+                                           .All()
+                                           .With(e => e.SeasonNumber = 1)
+                                           .Build()
+                                           .ToList();
+
+
+            _episodeFile = Builder<EpisodeFile>.CreateNew()
+                                               .With(f => f.Path = Path.Combine(_series.Path, "Season 1", "Series Title - S01E01.mkv").AsOsAgnostic())
+                                               .With(f => f.RelativePath = @"Season 1\Series Title - S01E01.mkv".AsOsAgnostic())
+                                               .Build();
+
+            _localEpisode = Builder<LocalEpisode>.CreateNew()
+                                                 .With(l => l.Series = _series)
+                                                 .With(l => l.Episodes = episodes)
+                                                 .With(l => l.Path = Path.Combine(_episodeFolder, "Series.Title.S01E01.mkv").AsOsAgnostic())
+                                                 .Build();
+
+            _subtitleService = new Mock<IManageExtraFiles>();
+            _subtitleService.SetupGet(s => s.Order).Returns(0);
+            _subtitleService.Setup(s => s.CanImportFile(It.IsAny<LocalEpisode>(), It.IsAny<EpisodeFile>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<bool>()))
+                .Returns(false);
+            _subtitleService.Setup(s => s.CanImportFile(It.IsAny<LocalEpisode>(), It.IsAny<EpisodeFile>(), It.IsAny<string>(), ".srt", It.IsAny<bool>()))
+                .Returns(true);
+
+            _otherExtraService = new Mock<IManageExtraFiles>();
+            _otherExtraService.SetupGet(s => s.Order).Returns(1);
+            _otherExtraService.Setup(s => s.CanImportFile(It.IsAny<LocalEpisode>(), It.IsAny<EpisodeFile>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<bool>()))
+                .Returns(true);
+
+            Mocker.SetConstant<IEnumerable<IManageExtraFiles>>(new[] {
+                _subtitleService.Object,
+                _otherExtraService.Object
+            });
+
+            Mocker.GetMock<IDiskProvider>().Setup(s => s.FolderExists(It.IsAny<string>()))
+                  .Returns(false);
+
+            Mocker.GetMock<IDiskProvider>().Setup(s => s.GetParentFolder(It.IsAny<string>()))
+                  .Returns((string path) => Directory.GetParent(path).FullName);
+
+            WithExistingFolder(_series.Path);
+            WithExistingFile(_episodeFile.Path);
+            WithExistingFile(_localEpisode.Path);
+
+            Mocker.GetMock<IConfigService>().Setup(v => v.ImportExtraFiles).Returns(true);
+            Mocker.GetMock<IConfigService>().Setup(v => v.ExtraFileExtensions).Returns("nfo,srt");
+        }
+
+        private void WithExistingFolder(string path, bool exists = true)
+        {
+            var dir = Path.GetDirectoryName(path);
+
+            if (exists && dir.IsNotNullOrWhiteSpace())
+            {
+                WithExistingFolder(dir);
+            }
+
+            Mocker.GetMock<IDiskProvider>().Setup(v => v.FolderExists(path)).Returns(exists);
+        }
+
+        private void WithExistingFile(string path, bool exists = true, int size = 1000)
+        {
+            var dir = Path.GetDirectoryName(path);
+
+            if (exists && dir.IsNotNullOrWhiteSpace())
+            {
+                WithExistingFolder(dir);
+            }
+
+            Mocker.GetMock<IDiskProvider>().Setup(v => v.FileExists(path)).Returns(exists);
+            Mocker.GetMock<IDiskProvider>().Setup(v => v.GetFileSize(path)).Returns(size);
+        }
+
+        private void WithExistingFiles(List<string> files)
+        {
+            foreach (string file in files)
+            {
+                WithExistingFile(file);
+            }
+
+            Mocker.GetMock<IDiskProvider>().Setup(s => s.GetFiles(_episodeFolder, SearchOption.AllDirectories))
+                  .Returns(files.ToArray());
+        }
+
+        [Test]
+        public void should_not_pass_file_if_import_disabled()
+        {
+            Mocker.GetMock<IConfigService>().Setup(v => v.ImportExtraFiles).Returns(false);
+
+            var nfofile = Path.Combine(_episodeFolder, "Series.Title.S01E01.nfo").AsOsAgnostic();
+
+            var files = new List<string> {
+                _localEpisode.Path,
+                nfofile
+            };
+
+            WithExistingFiles(files);
+
+            Subject.ImportEpisode(_localEpisode, _episodeFile, true);
+
+            _subtitleService.Verify(v => v.CanImportFile(_localEpisode, _episodeFile, It.IsAny<string>(), It.IsAny<string>(), true), Times.Never());
+            _otherExtraService.Verify(v => v.CanImportFile(_localEpisode, _episodeFile, It.IsAny<string>(), It.IsAny<string>(), true), Times.Never());
+        }
+
+        [Test]
+        [TestCase("Series Title - S01E01.sub")]
+        [TestCase("Series Title - S01E01.ass")]
+        public void should_not_pass_unwanted_file(string filePath)
+        {
+            Mocker.GetMock<IConfigService>().Setup(v => v.ImportExtraFiles).Returns(false);
+
+            var nfofile = Path.Combine(_episodeFolder, filePath).AsOsAgnostic();
+
+            var files = new List<string> {
+                _localEpisode.Path,
+                nfofile
+            };
+
+            WithExistingFiles(files);
+
+            Subject.ImportEpisode(_localEpisode, _episodeFile, true);
+
+            _subtitleService.Verify(v => v.CanImportFile(_localEpisode, _episodeFile, It.IsAny<string>(), It.IsAny<string>(), true), Times.Never());
+            _otherExtraService.Verify(v => v.CanImportFile(_localEpisode, _episodeFile, It.IsAny<string>(), It.IsAny<string>(), true), Times.Never());
+        }
+
+        [Test]
+        public void should_pass_subtitle_file_to_subtitle_service()
+        {
+            var subtitleFile = Path.Combine(_episodeFolder, "Series.Title.S01E01.en.srt").AsOsAgnostic();
+
+            var files = new List<string> {
+                _localEpisode.Path,
+                subtitleFile
+            };
+
+            WithExistingFiles(files);
+
+            Subject.ImportEpisode(_localEpisode, _episodeFile, true);
+
+            _subtitleService.Verify(v => v.ImportFiles(_localEpisode, _episodeFile, new List<string> { subtitleFile }, true), Times.Once());
+            _otherExtraService.Verify(v => v.ImportFiles(_localEpisode, _episodeFile, new List<string> { subtitleFile }, true), Times.Never());
+        }
+
+        [Test]
+        public void should_pass_nfo_file_to_other_service()
+        {
+            var nfofile = Path.Combine(_episodeFolder, "Series.Title.S01E01.nfo").AsOsAgnostic();
+
+            var files = new List<string> {
+                _localEpisode.Path,
+                nfofile
+            };
+
+            WithExistingFiles(files);
+
+            Subject.ImportEpisode(_localEpisode, _episodeFile, true);
+
+            _subtitleService.Verify(v => v.ImportFiles(_localEpisode, _episodeFile, new List<string> { nfofile }, true), Times.Never());
+            _otherExtraService.Verify(v => v.ImportFiles(_localEpisode, _episodeFile, new List<string> { nfofile }, true), Times.Once());
+        }
+    }
+}

src/NzbDrone.Core.Test/Extras/Others/OtherExtraServiceFixture.cs

@@ -0,0 +1,94 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using FluentAssertions;
+using FizzWare.NBuilder;
+using NUnit.Framework;
+using NzbDrone.Common.Extensions;
+using NzbDrone.Core.Extras.Others;
+using NzbDrone.Core.MediaFiles;
+using NzbDrone.Core.Parser.Model;
+using NzbDrone.Core.Test.Framework;
+using NzbDrone.Core.Tv;
+using NzbDrone.Test.Common;
+
+namespace NzbDrone.Core.Test.Extras.Others
+{
+    [TestFixture]
+    public class OtherExtraServiceFixture : CoreTest<OtherExtraService>
+    {
+        private Series _series;
+        private EpisodeFile _episodeFile;
+        private LocalEpisode _localEpisode;
+
+        private string _seriesFolder;
+        private string _episodeFolder;
+
+        [SetUp]
+        public void Setup()
+        {
+            _seriesFolder = @"C:\Test\TV\Series Title".AsOsAgnostic();
+            _episodeFolder = @"C:\Test\Unsorted TV\Series.Title.S01".AsOsAgnostic();
+
+            _series = Builder<Series>.CreateNew()
+                                     .With(s => s.Path = _seriesFolder)
+                                     .Build();
+
+            var episodes = Builder<Episode>.CreateListOfSize(1)
+                                           .All()
+                                           .With(e => e.SeasonNumber = 1)
+                                           .Build()
+                                           .ToList();
+
+
+            _episodeFile = Builder<EpisodeFile>.CreateNew()
+                                               .With(f => f.Path = Path.Combine(_series.Path, "Season 1", "Series Title - S01E01.mkv").AsOsAgnostic())
+                                               .With(f => f.RelativePath = @"Season 1\Series Title - S01E01.mkv")
+                                               .Build();
+
+            _localEpisode = Builder<LocalEpisode>.CreateNew()
+                                                 .With(l => l.Series = _series)
+                                                 .With(l => l.Episodes = episodes)
+                                                 .With(l => l.Path = Path.Combine(_episodeFolder, "Series.Title.S01E01.mkv").AsOsAgnostic())
+                                                 .With(l => l.FileEpisodeInfo = new ParsedEpisodeInfo
+                                                 {
+                                                     SeasonNumber = 1,
+                                                     EpisodeNumbers = new[] { 1 }
+                                                 })
+                                                 .Build();
+        }
+
+        [Test]
+        [TestCase("Series Title - S01E01.nfo", "Series Title - S01E01.nfo")]
+        [TestCase("Series.Title.S01E01.nfo", "Series Title - S01E01.nfo")]
+        [TestCase("Series-Title-S01E01.nfo", "Series Title - S01E01.nfo")]
+        [TestCase("Series Title S01E01.nfo", "Series Title - S01E01.nfo")]
+        [TestCase("Series_Title_S01E01.nfo", "Series Title - S01E01.nfo")]
+        [TestCase("S01E01.thumb.jpg", "Series Title - S01E01.jpg")]
+        [TestCase(@"Series.Title.S01E01\thumb.jpg", "Series Title - S01E01.jpg")]
+        public void should_import_matching_file(string filePath, string expectedOutputPath)
+        {
+            var files = new List<string> { Path.Combine(_episodeFolder, filePath).AsOsAgnostic() };
+            
+            var results = Subject.ImportFiles(_localEpisode, _episodeFile, files, true).ToList();
+
+            results.Count().Should().Be(1);
+
+            results[0].RelativePath.AsOsAgnostic().PathEquals(Path.Combine("Season 1", expectedOutputPath).AsOsAgnostic()).Should().Be(true);
+        }
+
+        [Test]
+        public void should_not_import_multiple_nfo_files()
+        {
+            var files = new List<string>
+            {
+                Path.Combine(_episodeFolder, "Series.Title.S01E01.nfo").AsOsAgnostic(),
+                Path.Combine(_episodeFolder, "Series_Title_S01E01.nfo").AsOsAgnostic(),
+            };
+
+            var results = Subject.ImportFiles(_localEpisode, _episodeFile, files, true).ToList();
+
+            results.Count().Should().Be(1);
+        }
+    }
+}

src/NzbDrone.Core.Test/Extras/Subtitles/SubtitleServiceFixture.cs

@@ -0,0 +1,181 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using FluentAssertions;
+using FizzWare.NBuilder;
+using NUnit.Framework;
+using NzbDrone.Common.Extensions;
+using NzbDrone.Core.Extras.Subtitles;
+using NzbDrone.Core.MediaFiles;
+using NzbDrone.Core.MediaFiles.EpisodeImport;
+using NzbDrone.Core.Parser.Model;
+using NzbDrone.Core.Test.Framework;
+using NzbDrone.Core.Tv;
+using NzbDrone.Test.Common;
+using Moq;
+using NzbDrone.Common.Disk;
+
+namespace NzbDrone.Core.Test.Extras.Subtitles
+{
+    [TestFixture]
+    public class SubtitleServiceFixture : CoreTest<SubtitleService>
+    {
+        private Series _series;
+        private EpisodeFile _episodeFile;
+        private LocalEpisode _localEpisode;
+
+        private string _seriesFolder;
+        private string _episodeFolder;
+
+        [SetUp]
+        public void Setup()
+        {
+            _seriesFolder = @"C:\Test\TV\Series Title".AsOsAgnostic();
+            _episodeFolder = @"C:\Test\Unsorted TV\Series.Title.S01".AsOsAgnostic();
+
+            _series = Builder<Series>.CreateNew()
+                                     .With(s => s.Path = _seriesFolder)
+                                     .Build();
+
+            var episodes = Builder<Episode>.CreateListOfSize(1)
+                                           .All()
+                                           .With(e => e.SeasonNumber = 1)
+                                           .Build()
+                                           .ToList();
+
+
+            _episodeFile = Builder<EpisodeFile>.CreateNew()
+                                               .With(f => f.Path = Path.Combine(_series.Path, "Season 1", "Series Title - S01E01.mkv").AsOsAgnostic())
+                                               .With(f => f.RelativePath = @"Season 1\Series Title - S01E01.mkv".AsOsAgnostic())
+                                               .Build();
+
+            _localEpisode = Builder<LocalEpisode>.CreateNew()
+                                                 .With(l => l.Series = _series)
+                                                 .With(l => l.Episodes = episodes)
+                                                 .With(l => l.Path = Path.Combine(_episodeFolder, "Series.Title.S01E01.mkv").AsOsAgnostic())
+                                                 .With(l => l.FileEpisodeInfo = new ParsedEpisodeInfo
+                                                 {
+                                                     SeasonNumber = 1,
+                                                     EpisodeNumbers = new[] { 1 }
+                                                 })
+                                                 .Build();
+
+            Mocker.GetMock<IDiskProvider>().Setup(s => s.GetParentFolder(It.IsAny<string>()))
+                  .Returns((string path) => Directory.GetParent(path).FullName);
+
+            Mocker.GetMock<IDetectSample>().Setup(s => s.IsSample(It.IsAny<Series>(), It.IsAny<string>(), It.IsAny<bool>()))
+                  .Returns(DetectSampleResult.NotSample);
+        }
+
+        [Test]
+        [TestCase("Series.Title.S01E01.en.nfo")]
+        public void should_not_import_non_subtitle_file(string filePath)
+        {
+            var files = new List<string> { Path.Combine(_episodeFolder, filePath).AsOsAgnostic() };
+
+            var results = Subject.ImportFiles(_localEpisode, _episodeFile, files, true).ToList();
+
+            results.Count().Should().Be(0);
+        }
+
+        [Test]
+        [TestCase("Series Title - S01E01.srt", "Series Title - S01E01.srt")]
+        [TestCase("Series.Title.S01E01.en.srt", "Series Title - S01E01.en.srt")]
+        [TestCase("Series.Title.S01E01.english.srt", "Series Title - S01E01.en.srt")]
+        [TestCase("Series-Title-S01E01-fr-cc.srt", "Series Title - S01E01.fr.srt")]
+        [TestCase("Series Title S01E01_en_sdh_forced.srt", "Series Title - S01E01.en.srt")]
+        [TestCase("Series_Title_S01E01 en.srt", "Series Title - S01E01.en.srt")]
+        [TestCase(@"Subs\S01E01.en.srt", "Series Title - S01E01.en.srt")]
+        [TestCase(@"Subs\Series.Title.S01E01\2_en.srt", "Series Title - S01E01.en.srt")]
+        public void should_import_matching_subtitle_file(string filePath, string expectedOutputPath)
+        {
+            var files = new List<string> { Path.Combine(_episodeFolder, filePath).AsOsAgnostic() };
+            
+            var results = Subject.ImportFiles(_localEpisode, _episodeFile, files, true).ToList();
+
+            results.Count().Should().Be(1);
+
+            results[0].RelativePath.AsOsAgnostic().PathEquals(Path.Combine("Season 1", expectedOutputPath).AsOsAgnostic()).Should().Be(true);
+        }
+
+        [Test]
+        public void should_import_multiple_subtitle_files_per_language()
+        {
+            var files = new List<string>
+            {
+                Path.Combine(_episodeFolder, "Series.Title.S01E01.en.srt").AsOsAgnostic(),
+                Path.Combine(_episodeFolder, "Series.Title.S01E01.english.srt").AsOsAgnostic(),
+                Path.Combine(_episodeFolder, "Subs", "Series_Title_S01E01_en_forced.srt").AsOsAgnostic(),
+                Path.Combine(_episodeFolder, "Subs", "Series.Title.S01E01", "2_fr.srt").AsOsAgnostic()
+            };
+
+            var expectedOutputs = new string[]
+            {
+                "Series Title - S01E01.1.en.srt",
+                "Series Title - S01E01.2.en.srt",
+                "Series Title - S01E01.3.en.srt",
+                "Series Title - S01E01.fr.srt",
+            };
+
+            var results = Subject.ImportFiles(_localEpisode, _episodeFile, files, true).ToList();
+
+            results.Count().Should().Be(expectedOutputs.Length);
+
+            for (int i = 0; i < expectedOutputs.Length; i++)
+            {
+                results[i].RelativePath.AsOsAgnostic().PathEquals(Path.Combine("Season 1", expectedOutputs[i]).AsOsAgnostic()).Should().Be(true);
+            }
+        }
+
+        [Test]
+        [TestCase("sub.srt", "Series Title - S01E01.srt")]
+        [TestCase(@"Subs\2_en.srt", "Series Title - S01E01.en.srt")]
+        public void should_import_unmatching_subtitle_file_if_only_episode(string filePath, string expectedOutputPath)
+        {
+            var subtitleFile = Path.Combine(_episodeFolder, filePath).AsOsAgnostic();
+
+            var sampleFile = Path.Combine(_series.Path, "Season 1", "Series Title - S01E01.sample.mkv").AsOsAgnostic();
+
+            var videoFiles = new string[]
+            {
+                _localEpisode.Path,
+                sampleFile
+            };
+
+            Mocker.GetMock<IDiskProvider>().Setup(s => s.GetFiles(It.IsAny<string>(), SearchOption.AllDirectories))
+                  .Returns(videoFiles);
+
+            Mocker.GetMock<IDetectSample>().Setup(s => s.IsSample(It.IsAny<Series>(), sampleFile, It.IsAny<bool>()))
+                  .Returns(DetectSampleResult.Sample);
+
+            var results = Subject.ImportFiles(_localEpisode, _episodeFile, new List<string> { subtitleFile }, true).ToList();
+
+            results.Count().Should().Be(1);
+
+            results[0].RelativePath.AsOsAgnostic().PathEquals(Path.Combine("Season 1", expectedOutputPath).AsOsAgnostic()).Should().Be(true);
+
+            ExceptionVerification.ExpectedWarns(1);
+        }
+
+        [Test]
+        [TestCase("sub.srt")]
+        [TestCase(@"Subs\2_en.srt")]
+        public void should_not_import_unmatching_subtitle_file_if_multiple_episodes(string filePath)
+        {
+            var subtitleFile = Path.Combine(_episodeFolder, filePath).AsOsAgnostic();
+
+            var videoFiles = new string[]
+            {
+                _localEpisode.Path,
+                Path.Combine(_series.Path, "Season 1", "Series Title - S01E01.sample.mkv").AsOsAgnostic()
+            };
+
+            Mocker.GetMock<IDiskProvider>().Setup(s => s.GetFiles(It.IsAny<string>(), SearchOption.AllDirectories))
+                  .Returns(videoFiles);
+
+            var results = Subject.ImportFiles(_localEpisode, _episodeFile, new List<string> { subtitleFile }, true).ToList();
+
+            results.Count().Should().Be(0);
+        }
+    }
+}

src/NzbDrone.Core.Test/ParserTests/LanguageParserFixture.cs

@@ -35,6 +35,22 @@ namespace NzbDrone.Core.Test.ParserTests
             result.Should().Be(Language.Unknown);
         }
 
+        [TestCase("Series Title - S01E01 - Pilot.en.sub")]
+        [TestCase("Series Title - S01E01 - Pilot.EN.sub")]
+        [TestCase("Series Title - S01E01 - Pilot.eng.sub")]
+        [TestCase("Series Title - S01E01 - Pilot.ENG.sub")]
+        [TestCase("Series Title - S01E01 - Pilot.English.sub")]
+        [TestCase("Series Title - S01E01 - Pilot.english.sub")]
+        [TestCase("Series Title - S01E01 - Pilot.en.cc.sub")]
+        [TestCase("Series Title - S01E01 - Pilot.en.sdh.sub")]
+        [TestCase("Series Title - S01E01 - Pilot.en.forced.sub")]
+        [TestCase("Series Title - S01E01 - Pilot.en.sdh.forced.sub")]
+        public void should_parse_subtitle_language_english(string fileName)
+        {
+            var result = LanguageParser.ParseSubtitleLanguage(fileName);
+            result.Should().Be(Language.English);
+        }
+
         [TestCase("Title.the.Series.2009.S01E14.French.HDTV.XviD-LOL")]
         [TestCase("Title.the.Series.The.1x13.Tueurs.De.Flics.FR.DVDRip.XviD")]
         public void should_parse_language_french(string postTitle)

src/NzbDrone.Core/Extras/ExtraService.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -32,13 +32,12 @@ namespace NzbDrone.Core.Extras
         private readonly IDiskProvider _diskProvider;
         private readonly IConfigService _configService;
         private readonly List<IManageExtraFiles> _extraFileManagers;
-        private readonly Logger _logger;
 
         public ExtraService(IMediaFileService mediaFileService,
                             IEpisodeService episodeService,
                             IDiskProvider diskProvider,
                             IConfigService configService,
-                            List<IManageExtraFiles> extraFileManagers,
+                            IEnumerable<IManageExtraFiles> extraFileManagers,
                             Logger logger)
         {
             _mediaFileService = mediaFileService;
@@ -46,13 +45,12 @@ namespace NzbDrone.Core.Extras
             _diskProvider = diskProvider;
             _configService = configService;
             _extraFileManagers = extraFileManagers.OrderBy(e => e.Order).ToList();
-            _logger = logger;
         }
 
         public void ImportEpisode(LocalEpisode localEpisode, EpisodeFile episodeFile, bool isReadOnly)
         {
             ImportExtraFiles(localEpisode, episodeFile, isReadOnly);
-            
+
             CreateAfterEpisodeImport(localEpisode.Series, episodeFile);
         }
 
@@ -63,62 +61,38 @@ namespace NzbDrone.Core.Extras
                 return;
             }
 
-            var sourcePath = localEpisode.Path;
-            var sourceFolder = _diskProvider.GetParentFolder(sourcePath);
-            var sourceFileName = Path.GetFileNameWithoutExtension(sourcePath);
-            var files = _diskProvider.GetFiles(sourceFolder, SearchOption.TopDirectoryOnly);
-
             var wantedExtensions = _configService.ExtraFileExtensions.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries)
-                                                                     .Select(e => e.Trim(' ', '.'))
+                                                                     .Select(e => e.Trim(' ', '.')
+                                                                     .Insert(0, "."))
                                                                      .ToList();
 
-            var matchingFilenames = files.Where(f => Path.GetFileNameWithoutExtension(f).StartsWith(sourceFileName, StringComparison.InvariantCultureIgnoreCase)).ToList();
-            var filteredFilenames = new List<string>();
-            var hasNfo = false;
-
-            foreach (var matchingFilename in matchingFilenames)
-            {
-                // Filter out duplicate NFO files
-
-                if (matchingFilename.EndsWith(".nfo", StringComparison.InvariantCultureIgnoreCase))
-                {
-                    if (hasNfo)
-                    {
-                        continue;
-                    }
-
-                    hasNfo = true;
-                }
-
-                filteredFilenames.Add(matchingFilename);
-            }
+            var sourceFolder = _diskProvider.GetParentFolder(localEpisode.Path);
+            var files = _diskProvider.GetFiles(sourceFolder, SearchOption.AllDirectories);
+            var managedFiles = _extraFileManagers.Select((i) => new List<string>()).ToArray();
 
-            foreach (var matchingFilename in filteredFilenames)
+            foreach (var file in files)
             {
-                var matchingExtension = wantedExtensions.FirstOrDefault(e => matchingFilename.EndsWith(e));
+                var extension = Path.GetExtension(file);
+                var matchingExtension = wantedExtensions.FirstOrDefault(e => e.Equals(extension));
 
                 if (matchingExtension == null)
                 {
                     continue;
                 }
 
-                try
+                for (int i = 0; i < _extraFileManagers.Count; i++)
                 {
-                    foreach (var extraFileManager in _extraFileManagers)
+                    if (_extraFileManagers[i].CanImportFile(localEpisode, episodeFile, file, extension, isReadOnly))
                     {
-                        var extension = Path.GetExtension(matchingFilename);
-                        var extraFile = extraFileManager.Import(localEpisode.Series, episodeFile, matchingFilename, extension, isReadOnly);
-
-                        if (extraFile != null)
-                        {
-                            break;
-                        }
+                        managedFiles[i].Add(file);
+                        break;
                     }
                 }
-                catch (Exception ex)
-                {
-                    _logger.Warn(ex, "Failed to import extra file: {0}", matchingFilename);
-                }
+            }
+
+            for (int i = 0; i < _extraFileManagers.Count; i++)
+            {
+                _extraFileManagers[i].ImportFiles(localEpisode, episodeFile, managedFiles[i], isReadOnly);
             }
         }
 

src/NzbDrone.Core/Extras/Files/ExtraFileManager.cs

@@ -7,6 +7,7 @@ using NzbDrone.Common.Disk;
 using NzbDrone.Common.Extensions;
 using NzbDrone.Core.Configuration;
 using NzbDrone.Core.MediaFiles;
+using NzbDrone.Core.Parser.Model;
 using NzbDrone.Core.Tv;
 
 namespace NzbDrone.Core.Extras.Files
@@ -19,7 +20,8 @@ namespace NzbDrone.Core.Extras.Files
         IEnumerable<ExtraFile> CreateAfterEpisodeImport(Series series, EpisodeFile episodeFile);
         IEnumerable<ExtraFile> CreateAfterEpisodeFolder(Series series, string seriesFolder, string seasonFolder);
         IEnumerable<ExtraFile> MoveFilesAfterRename(Series series, List<EpisodeFile> episodeFiles);
-        ExtraFile Import(Series series, EpisodeFile episodeFile, string path, string extension, bool readOnly);
+        bool CanImportFile(LocalEpisode localEpisode, EpisodeFile episodeFile, string path, string extension, bool readOnly);
+        IEnumerable<ExtraFile> ImportFiles(LocalEpisode localEpisode, EpisodeFile episodeFile, List<string> files, bool isReadOnly);
     }
 
     public abstract class ExtraFileManager<TExtraFile> : IManageExtraFiles
@@ -48,7 +50,8 @@ namespace NzbDrone.Core.Extras.Files
         public abstract IEnumerable<ExtraFile> CreateAfterEpisodeImport(Series series, EpisodeFile episodeFile);
         public abstract IEnumerable<ExtraFile> CreateAfterEpisodeFolder(Series series, string seriesFolder, string seasonFolder);
         public abstract IEnumerable<ExtraFile> MoveFilesAfterRename(Series series, List<EpisodeFile> episodeFiles);
-        public abstract ExtraFile Import(Series series, EpisodeFile episodeFile, string path, string extension, bool readOnly);
+        public abstract bool CanImportFile(LocalEpisode localEpisode, EpisodeFile episodeFile, string path, string extension, bool readOnly);
+        public abstract IEnumerable<ExtraFile> ImportFiles(LocalEpisode localEpisode, EpisodeFile episodeFile, List<string> files, bool isReadOnly);
 
         protected TExtraFile ImportFile(Series series, EpisodeFile episodeFile, string path, bool readOnly, string extension, string fileNameSuffix = null)
         {

src/NzbDrone.Core/Extras/Metadata/MetadataService.cs

@@ -12,6 +12,7 @@ using NzbDrone.Core.Extras.Files;
 using NzbDrone.Core.Extras.Metadata.Files;
 using NzbDrone.Core.Extras.Others;
 using NzbDrone.Core.MediaFiles;
+using NzbDrone.Core.Parser.Model;
 using NzbDrone.Core.Tv;
 
 namespace NzbDrone.Core.Extras.Metadata
@@ -202,9 +203,14 @@ namespace NzbDrone.Core.Extras.Metadata
             return movedFiles;
         }
 
-        public override ExtraFile Import(Series series, EpisodeFile episodeFile, string path, string extension, bool readOnly)
+        public override bool CanImportFile(LocalEpisode localEpisode, EpisodeFile episodeFile, string path, string extension, bool readOnly)
         {
-            return null;
+            return false;
+        }
+
+        public override IEnumerable<ExtraFile> ImportFiles(LocalEpisode localEpisode, EpisodeFile episodeFile, List<string> files, bool isReadOnly)
+        {
+            return Enumerable.Empty<ExtraFile>();
         }
 
         private List<MetadataFile> GetMetadataFilesForConsumer(IMetadata consumer, List<MetadataFile> seriesMetadata)

src/NzbDrone.Core/Extras/Others/OtherExtraService.cs

@@ -8,14 +8,17 @@ using NzbDrone.Common.Extensions;
 using NzbDrone.Core.Configuration;
 using NzbDrone.Core.Extras.Files;
 using NzbDrone.Core.MediaFiles;
+using NzbDrone.Core.Parser.Model;
 using NzbDrone.Core.Tv;
 
 namespace NzbDrone.Core.Extras.Others
 {
     public class OtherExtraService : ExtraFileManager<OtherExtraFile>
     {
+        private readonly IDiskProvider _diskProvider;
         private readonly IOtherExtraFileService _otherExtraFileService;
         private readonly IMediaFileAttributeService _mediaFileAttributeService;
+        private readonly Logger _logger;
 
         public OtherExtraService(IConfigService configService,
                                  IDiskProvider diskProvider,
@@ -25,8 +28,10 @@ namespace NzbDrone.Core.Extras.Others
                                  Logger logger)
             : base(configService, diskProvider, diskTransferService, logger)
         {
+            _diskProvider = diskProvider;
             _otherExtraFileService = otherExtraFileService;
             _mediaFileAttributeService = mediaFileAttributeService;
+            _logger = logger;
         }
 
         public override int Order => 2;
@@ -71,14 +76,79 @@ namespace NzbDrone.Core.Extras.Others
             return movedFiles;
         }
 
-        public override ExtraFile Import(Series series, EpisodeFile episodeFile, string path, string extension, bool readOnly)
+        public override bool CanImportFile(LocalEpisode localEpisode, EpisodeFile episodeFile, string path, string extension, bool readOnly)
         {
-            var extraFile = ImportFile(series, episodeFile, path, readOnly, extension, null);
+            return true;
+        }
+
+        public override IEnumerable<ExtraFile> ImportFiles(LocalEpisode localEpisode, EpisodeFile episodeFile, List<string> files, bool isReadOnly)
+        {
+            var importedFiles = new List<ExtraFile>();
+            var filteredFiles = files.Where(f => CanImportFile(localEpisode, episodeFile, f, Path.GetExtension(f), isReadOnly)).ToList();
+            var sourcePath = localEpisode.Path;
+            var sourceFolder = _diskProvider.GetParentFolder(sourcePath);
+            var sourceFileName = Path.GetFileNameWithoutExtension(sourcePath);
+            var matchingFiles = new List<string>();
+            var hasNfo = false;
+
+            foreach (var file in filteredFiles)
+            {
+                try
+                {
+                    // Filter out duplicate NFO files
+                    if (file.EndsWith(".nfo", StringComparison.InvariantCultureIgnoreCase))
+                    {
+                        if (hasNfo)
+                        {
+                            continue;
+                        }
 
-            _mediaFileAttributeService.SetFilePermissions(path);
-            _otherExtraFileService.Upsert(extraFile);
+                        hasNfo = true;
+                    }
+
+                    // Filename match
+                    if (Path.GetFileNameWithoutExtension(file).StartsWith(sourceFileName, StringComparison.InvariantCultureIgnoreCase))
+                    {
+                        matchingFiles.Add(file);
+                        continue;
+                    }
+
+                    // Season and episode match
+                    var fileEpisodeInfo = Parser.Parser.ParsePath(file) ?? new ParsedEpisodeInfo();
+
+                    if (fileEpisodeInfo.EpisodeNumbers.Length == 0)
+                    {
+                        continue;
+                    }
+
+                    if (fileEpisodeInfo.SeasonNumber == localEpisode.FileEpisodeInfo.SeasonNumber &&
+                        fileEpisodeInfo.EpisodeNumbers.SequenceEqual(localEpisode.FileEpisodeInfo.EpisodeNumbers))
+                    {
+                        matchingFiles.Add(file);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    _logger.Warn(ex, "Failed to import extra file: {0}", file);
+                }
+            }
+
+            foreach (string file in matchingFiles)
+            {
+                try
+                {
+                    var extraFile = ImportFile(localEpisode.Series, episodeFile, file, isReadOnly, Path.GetExtension(file), null);
+                    _mediaFileAttributeService.SetFilePermissions(file);
+                    _otherExtraFileService.Upsert(extraFile);
+                    importedFiles.Add(extraFile);
+                }
+                catch (Exception ex)
+                {
+                    _logger.Warn(ex, "Failed to import extra file: {0}", file);
+                }
+            }
 
-            return extraFile;
+            return importedFiles;
         }
     }
 }

src/NzbDrone.Core/Extras/Subtitles/SubtitleService.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text;
@@ -9,13 +10,17 @@ using NzbDrone.Core.Configuration;
 using NzbDrone.Core.Extras.Files;
 using NzbDrone.Core.Languages;
 using NzbDrone.Core.MediaFiles;
+using NzbDrone.Core.MediaFiles.EpisodeImport;
 using NzbDrone.Core.Parser;
+using NzbDrone.Core.Parser.Model;
 using NzbDrone.Core.Tv;
 
 namespace NzbDrone.Core.Extras.Subtitles
 {
     public class SubtitleService : ExtraFileManager<SubtitleFile>
     {
+        private readonly IDiskProvider _diskProvider;
+        private readonly IDetectSample _detectSample;
         private readonly ISubtitleFileService _subtitleFileService;
         private readonly IMediaFileAttributeService _mediaFileAttributeService;
         private readonly Logger _logger;
@@ -23,11 +28,14 @@ namespace NzbDrone.Core.Extras.Subtitles
         public SubtitleService(IConfigService configService,
                                IDiskProvider diskProvider,
                                IDiskTransferService diskTransferService,
+                               IDetectSample detectSample,
                                ISubtitleFileService subtitleFileService,
                                IMediaFileAttributeService mediaFileAttributeService,
                                Logger logger)
             : base(configService, diskProvider, diskTransferService, logger)
         {
+            _diskProvider = diskProvider;
+            _detectSample = detectSample;
             _subtitleFileService = subtitleFileService;
             _mediaFileAttributeService = mediaFileAttributeService;
             _logger = logger;
@@ -71,11 +79,6 @@ namespace NzbDrone.Core.Extras.Subtitles
                     var groupCount = group.Count();
                     var copy = 1;
 
-                    if (groupCount > 1)
-                    {
-                        _logger.Warn("Multiple subtitle files found with the same language and extension for {0}", Path.Combine(series.Path, episodeFile.RelativePath));
-                    }
-
                     foreach (var subtitleFile in group)
                     {
                         var suffix = GetSuffix(subtitleFile.Language, copy, groupCount > 1);
@@ -91,23 +94,129 @@ namespace NzbDrone.Core.Extras.Subtitles
             return movedFiles;
         }
 
-        public override ExtraFile Import(Series series, EpisodeFile episodeFile, string path, string extension, bool readOnly)
+        public override bool CanImportFile(LocalEpisode localEpisode, EpisodeFile episodeFile, string path, string extension, bool readOnly)
         {
-            if (SubtitleFileExtensions.Extensions.Contains(Path.GetExtension(path)))
+            return SubtitleFileExtensions.Extensions.Contains(extension.ToLowerInvariant());
+        }
+
+        public override IEnumerable<ExtraFile> ImportFiles(LocalEpisode localEpisode, EpisodeFile episodeFile, List<string> files, bool isReadOnly)
+        {
+            var importedFiles = new List<SubtitleFile>();
+
+            var filteredFiles = files.Where(f => CanImportFile(localEpisode, episodeFile, f, Path.GetExtension(f), isReadOnly)).ToList();
+
+            var sourcePath = localEpisode.Path;
+            var sourceFolder = _diskProvider.GetParentFolder(sourcePath);
+            var sourceFileName = Path.GetFileNameWithoutExtension(sourcePath);
+
+            var matchingFiles = new List<string>();
+
+            foreach (var file in filteredFiles)
             {
-                var language = LanguageParser.ParseSubtitleLanguage(path);
-                var suffix = GetSuffix(language, 1, false);
-                var subtitleFile = ImportFile(series, episodeFile, path, readOnly, extension, suffix);
-                subtitleFile.Language = language;
+                try
+                {
+                    // Filename match
+                    if (Path.GetFileNameWithoutExtension(file).StartsWith(sourceFileName, StringComparison.InvariantCultureIgnoreCase))
+                    {
+                        matchingFiles.Add(file);
+                        continue;
+                    }
+
+                    // Season and episode match
+                    var fileEpisodeInfo = Parser.Parser.ParsePath(file) ?? new ParsedEpisodeInfo();
 
-                _mediaFileAttributeService.SetFilePermissions(path);
-                _subtitleFileService.Upsert(subtitleFile);
+                    if (fileEpisodeInfo.EpisodeNumbers.Length == 0)
+                    {
+                        continue;
+                    }
+
+                    if (fileEpisodeInfo.SeasonNumber == localEpisode.FileEpisodeInfo.SeasonNumber &&
+                        fileEpisodeInfo.EpisodeNumbers.SequenceEqual(localEpisode.FileEpisodeInfo.EpisodeNumbers))
+                    {
+                        matchingFiles.Add(file);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    _logger.Warn(ex, "Failed to import subtitle file: {0}", file);
+                }
+            }
 
+            // Use any sub if only episode in folder
+            if (matchingFiles.Count == 0 && filteredFiles.Count > 0)
+            {
+                var videoFiles = _diskProvider.GetFiles(sourceFolder, SearchOption.AllDirectories)
+                                              .Where(file => MediaFileExtensions.Extensions.Contains(Path.GetExtension(file)))
+                                              .ToList();
 
-                return subtitleFile;
+                if (videoFiles.Count() > 2)
+                {
+                    return importedFiles;
+                }
+
+                // Filter out samples
+                videoFiles = videoFiles.Where(file =>
+                {
+                    var sample = _detectSample.IsSample(localEpisode.Series, file, false);
+
+                    if (sample == DetectSampleResult.Sample)
+                    {
+                        return false;
+                    }
+
+                    return true;
+                }).ToList();
+
+                if (videoFiles.Count == 1)
+                {
+                    matchingFiles.AddRange(filteredFiles);
+
+                    _logger.Warn("Imported any available subtitle file for episode: {0}", localEpisode);
+                }
+            }
+
+            var subtitleFiles = new List<Tuple<string, Language, string>>();
+
+            foreach (string file in matchingFiles)
+            {
+                var language = LanguageParser.ParseSubtitleLanguage(file);
+                var extension = Path.GetExtension(file);
+                subtitleFiles.Add(new Tuple<string, Language, string>(file, language, extension));
+            }
+
+            var groupedSubtitleFiles = subtitleFiles.GroupBy(s => s.Item2 + s.Item3).ToList();
+
+            foreach (var group in groupedSubtitleFiles)
+            {
+                var groupCount = group.Count();
+                var copy = 1;
+
+                foreach (var file in group)
+                {
+                    try
+                    {
+                        var path = file.Item1;
+                        var language = file.Item2;
+                        var extension = file.Item3;
+                        var suffix = GetSuffix(language, copy, groupCount > 1);
+                        var subtitleFile = ImportFile(localEpisode.Series, episodeFile, path, isReadOnly, extension, suffix);
+                        subtitleFile.Language = language;
+
+                        _mediaFileAttributeService.SetFilePermissions(path);
+                        _subtitleFileService.Upsert(subtitleFile);
+
+                        importedFiles.Add(subtitleFile);
+
+                        copy++;
+                    }
+                    catch (Exception ex)
+                    {
+                        _logger.Warn(ex, "Failed to import subtitle file: {0}", file.Item1);
+                    }
+                }
             }
 
-            return null;
+            return importedFiles;
         }
 
         private string GetSuffix(Language language, int copy, bool multipleCopies = false)

src/NzbDrone.Core/Parser/LanguageParser.cs

@@ -24,7 +24,7 @@ namespace NzbDrone.Core.Parser
                                                                 RegexOptions.Compiled);
 
 
-        private static readonly Regex SubtitleLanguageRegex = new Regex(".+?[-_. ](?<iso_code>[a-z]{2,3})$", RegexOptions.Compiled | RegexOptions.IgnoreCase);
+        private static readonly Regex SubtitleLanguageRegex = new Regex(".+?[-_. ](?<iso_code>[a-z]{2,3})([-_. ](?<tags>full|forced|foreign|default|cc|psdh|sdh))*$", RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
         public static Language ParseLanguage(string title, bool defaultToEnglish = true)
         {
@@ -124,12 +124,12 @@ namespace NzbDrone.Core.Parser
                 if (languageMatch.Success)
                 {
                     var isoCode = languageMatch.Groups["iso_code"].Value;
-                    var isoLanguage = IsoLanguages.Find(isoCode);
+                    var isoLanguage = IsoLanguages.Find(isoCode.ToLower());
 
                     return isoLanguage?.Language ?? Language.Unknown;
                 }
 
-                foreach (Language language in Enum.GetValues(typeof(Language)))
+                foreach (Language language in Language.All)
                 {
                     if (simpleFilename.EndsWith(language.ToString(), StringComparison.OrdinalIgnoreCase))
                     {