Handling tracks slugs

.github/workflows/analysis.yml

@@ -35,7 +35,7 @@ jobs:
           check-name: tests
           repo-token: ${{secrets.GITHUB_TOKEN}}
           running-workflow-name: analysis
-          allowed-conclusions: success,skipped,cancelled,neutral,failed
+          allowed-conclusions: success,skipped,cancelled,neutral,failure
       - name: Download coverage report
         uses: dawidd6/action-download-artifact@v2
         with:

.github/workflows/tests.yml

@@ -29,8 +29,10 @@ jobs:
         POSTGRES_USERNAME: postgres
         POSTGRES_PASSWORD: postgres
     - name: Sanitize coverage output
+      if: ${{ always() }}
       run: sed -i "s'$(pwd)'.'" Kyoo.Tests/coverage.opencover.xml 
     - name: Upload coverage report
+      if: ${{ always() }}
       uses: actions/upload-artifact@v2
       with:
         name: coverage.xml

Kyoo.Common/Controllers/ILibraryManager.cs

@@ -149,16 +149,6 @@ namespace Kyoo.Controllers
 		[ItemNotNull]
 		Task<Episode> Get(string showSlug, int seasonNumber, int episodeNumber);
 
-		/// <summary>
-		/// Get a track from it's slug and it's type.
-		/// </summary>
-		/// <param name="slug">The slug of the track</param>
-		/// <param name="type">The type (Video, Audio or Subtitle)</param>
-		/// <exception cref="ItemNotFoundException">If the item is not found</exception>
-		/// <returns>The track found</returns>
-		[ItemNotNull]
-		Task<Track> Get(string slug, StreamType type = StreamType.Unknown);
-		
 		/// <summary>
 		/// Get the resource by it's ID or null if it is not found.
 		/// </summary>
@@ -224,15 +214,6 @@ namespace Kyoo.Controllers
 		[ItemCanBeNull]
 		Task<Episode> GetOrDefault(string showSlug, int seasonNumber, int episodeNumber);
 
-		/// <summary>
-		/// Get a track from it's slug and it's type or null if it is not found.
-		/// </summary>
-		/// <param name="slug">The slug of the track</param>
-		/// <param name="type">The type (Video, Audio or Subtitle)</param>
-		/// <returns>The track found</returns>
-		[ItemCanBeNull]
-		Task<Track> GetOrDefault(string slug, StreamType type = StreamType.Unknown);
-		
 
 		/// <summary>
 		/// Load a related resource

Kyoo.Common/Controllers/IRepository.cs

@@ -375,25 +375,7 @@ namespace Kyoo.Controllers
 	/// <summary>
 	/// A repository to handle tracks
 	/// </summary>
-	public interface ITrackRepository : IRepository<Track>
-	{
-		/// <summary>
-		/// Get a track from it's slug and it's type.
-		/// </summary>
-		/// <param name="slug">The slug of the track</param>
-		/// <param name="type">The type (Video, Audio or Subtitle)</param>
-		/// <exception cref="ItemNotFoundException">If the item is not found</exception>
-		/// <returns>The track found</returns>
-		Task<Track> Get(string slug, StreamType type = StreamType.Unknown);
-		
-		/// <summary>
-		/// Get a track from it's slug and it's type or null if it is not found.
-		/// </summary>
-		/// <param name="slug">The slug of the track</param>
-		/// <param name="type">The type (Video, Audio or Subtitle)</param>
-		/// <returns>The track found</returns>
-		Task<Track> GetOrDefault(string slug, StreamType type = StreamType.Unknown);
-	}
+	public interface ITrackRepository : IRepository<Track> { }
 	
 	/// <summary>
 	/// A repository to handle libraries.

Kyoo.Common/Controllers/Implementations/LibraryManager.cs

@@ -114,12 +114,6 @@ namespace Kyoo.Controllers
 			return EpisodeRepository.Get(showSlug, seasonNumber, episodeNumber);
 		}
 
-		/// <inheritdoc />
-		public Task<Track> Get(string slug, StreamType type = StreamType.Unknown)
-		{
-			return TrackRepository.Get(slug, type);
-		}
-
 		/// <inheritdoc />
 		public async Task<T> GetOrDefault<T>(int id) 
 			where T : class, IResource
@@ -165,12 +159,6 @@ namespace Kyoo.Controllers
 			return await EpisodeRepository.GetOrDefault(showSlug, seasonNumber, episodeNumber);
 		}
 
-		/// <inheritdoc />
-		public async Task<Track> GetOrDefault(string slug, StreamType type = StreamType.Unknown)
-		{
-			return await TrackRepository.GetOrDefault(slug, type);
-		}
-		
 		/// <inheritdoc />
 		public Task<T> Load<T, T2>(T obj, Expression<Func<T, T2>> member)
 			where T : class, IResource

Kyoo.Common/Models/Resources/Track.cs

@@ -33,42 +33,27 @@ namespace Kyoo.Models
 		{
 			get
 			{
-				string type = Type switch
-				{
-					StreamType.Subtitle => "",
-					StreamType.Video => "video.",
-					StreamType.Audio => "audio.",
-					StreamType.Attachment => "font.",
-					_ => ""
-				};
+				string type = Type.ToString().ToLower();
 				string index = TrackIndex != 0 ? $"-{TrackIndex}" : string.Empty;
-				string codec = Codec switch
-				{
-					"subrip" => ".srt",
-					{} x => $".{x}"
-				};
-				return $"{EpisodeSlug}.{type}{Language}{index}{(IsForced ? "-forced" : "")}{codec}";
+				string episode = EpisodeSlug ?? Episode.Slug ?? EpisodeID.ToString();
+				return $"{episode}.{Language}{index}{(IsForced ? ".forced" : "")}.{type}";
 			}
 			[UsedImplicitly] private set
 			{
-				Match match = Regex.Match(value, @"(?<show>.*)-s(?<season>\d+)e(?<episode>\d+)" 
-				                                 + @"(\.(?<type>\w*))?\.(?<language>.{0,3})(?<forced>-forced)?(\..\w)?");
+				if (value == null)
+					throw new ArgumentNullException(nameof(value));
+				Match match = Regex.Match(value, 
+					@"(?<ep>[^\.]+)\.(?<lang>\w{0,3})(-(?<index>\d+))?(\.(?<forced>forced))?\.(?<type>\w+)(\.\w*)?");
 
 				if (!match.Success)
-				{
-					match = Regex.Match(value, @"(?<show>.*)\.(?<language>.{0,3})(?<forced>-forced)?(\..\w)?");
-					if (!match.Success)
-						throw new ArgumentException("Invalid track slug. " +
-						                            "Format: {episodeSlug}.{language}[-forced][.{extension}]");
-				}
+					throw new ArgumentException("Invalid track slug. " +
+					                            "Format: {episodeSlug}.{language}[-{index}][-forced].{type}[.{extension}]");
 
-				EpisodeSlug = Episode.GetSlug(match.Groups["show"].Value, 
-					match.Groups["season"].Success ? int.Parse(match.Groups["season"].Value) : null,
-					match.Groups["episode"].Success ? int.Parse(match.Groups["episode"].Value) : null);
-				Language = match.Groups["language"].Value;
+				EpisodeSlug = match.Groups["ep"].Value;
+				Language = match.Groups["lang"].Value;
+				TrackIndex = int.Parse(match.Groups["index"].Value);
 				IsForced = match.Groups["forced"].Success;
-				if (match.Groups["type"].Success)
-					Type = Enum.Parse<StreamType>(match.Groups["type"].Value, true);
+				Type = Enum.Parse<StreamType>(match.Groups["type"].Value, true);
 			}
 		}
 		
@@ -167,5 +152,32 @@ namespace Kyoo.Models
 				_ => mkvLanguage
 			};
 		}
+
+		/// <summary>
+		/// Utility method to edit a track slug (this only return a slug with the modification, nothing is stored)
+		/// </summary>
+		/// <param name="baseSlug">The slug to edit</param>
+		/// <param name="type">The new type of this </param>
+		/// <param name="language"></param>
+		/// <param name="index"></param>
+		/// <param name="forced"></param>
+		/// <returns></returns>
+		public static string EditSlug(string baseSlug,
+			StreamType type = StreamType.Unknown,
+			string language = null,
+			int? index = null,
+			bool? forced = null)
+		{
+			Track track = new() {Slug = baseSlug};
+			if (type != StreamType.Unknown)
+				track.Type = type;
+			if (language != null)
+				track.Language = language;
+			if (index != null)
+				track.TrackIndex = index.Value;
+			if (forced != null)
+				track.IsForced = forced.Value;
+			return track.Slug;
+		}
 	}
 }

Kyoo.CommonAPI/DatabaseContext.cs

@@ -330,8 +330,6 @@ namespace Kyoo
 			modelBuilder.Entity<Track>()
 				.Property(x => x.Slug)
 				.ValueGeneratedOnAddOrUpdate();
-
-			// modelBuilder.Ignore<LibraryItem>();
 		}
 
 		/// <summary>
@@ -502,52 +500,6 @@ namespace Kyoo
 			}
 		}
 
-		/// <summary>
-		/// Save items or retry with a custom method if a duplicate is found.
-		/// </summary>
-		/// <param name="obj">The item to save (other changes of this context will also be saved)</param>
-		/// <param name="onFail">A function to run on fail, the <see cref="obj"/> param wil be mapped.
-		/// The second parameter is the current retry number.</param>
-		/// <param name="cancellationToken">A <see cref="CancellationToken"/> to observe while waiting for the task to complete</param>
-		/// <typeparam name="T">The type of the item to save</typeparam>
-		/// <returns>The number of state entries written to the database.</returns>
-		public Task<T> SaveOrRetry<T>(T obj, Func<T, int, T> onFail, CancellationToken cancellationToken = new())
-		{
-			return SaveOrRetry(obj, onFail, 0, cancellationToken);
-		}
-		
-		/// <summary>
-		/// Save items or retry with a custom method if a duplicate is found.
-		/// </summary>
-		/// <param name="obj">The item to save (other changes of this context will also be saved)</param>
-		/// <param name="onFail">A function to run on fail, the <see cref="obj"/> param wil be mapped.
-		/// The second parameter is the current retry number.</param>
-		/// <param name="recurse">The current retry number.</param>
-		/// <param name="cancellationToken">A <see cref="CancellationToken"/> to observe while waiting for the task to complete</param>
-		/// <typeparam name="T">The type of the item to save</typeparam>
-		/// <returns>The number of state entries written to the database.</returns>
-		private async Task<T> SaveOrRetry<T>(T obj,
-			Func<T, int, T> onFail,
-			int recurse,
-			CancellationToken cancellationToken = new())
-		{
-			try
-			{
-				await base.SaveChangesAsync(true, cancellationToken);
-				return obj;
-			}
-			catch (DbUpdateException ex) when (IsDuplicateException(ex))
-			{
-				recurse++;
-				return await SaveOrRetry(onFail(obj, recurse), onFail, recurse, cancellationToken);
-			}
-			catch (DbUpdateException)
-			{
-				DiscardChanges();
-				throw;
-			}
-		}
-
 		/// <summary>
 		/// Check if the exception is a duplicated exception.
 		/// </summary>

Kyoo.Postgresql/Migrations/20210627141941_Triggers.cs

@@ -13,7 +13,7 @@ namespace Kyoo.Postgresql.Migrations
 			LANGUAGE PLPGSQL
 			AS $$
 			BEGIN
-			    NEW.slug := CONCAT(
+				NEW.slug := CONCAT(
 					(SELECT slug FROM shows WHERE id = NEW.show_id),
 					'-s',
 					NEW.season_number
@@ -38,10 +38,10 @@ namespace Kyoo.Postgresql.Migrations
 				NEW.slug := CONCAT(
 					(SELECT slug FROM shows WHERE id = NEW.show_id),
 					CASE
-					    WHEN NEW.season_number IS NULL AND NEW.episode_number IS NULL THEN NULL
-					    WHEN NEW.season_number IS NULL THEN CONCAT('-', NEW.absolute_number)
-					    ELSE CONCAT('-s', NEW.season_number, 'e', NEW.episode_number)
-				    END
+						WHEN NEW.season_number IS NULL AND NEW.episode_number IS NULL THEN NULL
+						WHEN NEW.season_number IS NULL THEN CONCAT('-', NEW.absolute_number)
+						ELSE CONCAT('-s', NEW.season_number, 'e', NEW.episode_number)
+					END
 				);
 				RETURN NEW;
 			END
@@ -63,20 +63,80 @@ namespace Kyoo.Postgresql.Migrations
 			BEGIN
 				UPDATE seasons SET slug = CONCAT(NEW.slug, '-s', season_number) WHERE show_id = NEW.id;
 				UPDATE episodes SET slug = CASE
-				    WHEN season_number IS NULL AND episode_number IS NULL THEN NEW.slug
-				    WHEN season_number IS NULL THEN CONCAT(NEW.slug, '-', absolute_number) 
-				    ELSE CONCAT(NEW.slug, '-s', season_number, 'e', episode_number)
-				END
-				WHERE show_id = NEW.id;
+					WHEN season_number IS NULL AND episode_number IS NULL THEN NEW.slug
+					WHEN season_number IS NULL THEN CONCAT(NEW.slug, '-', absolute_number) 
+					ELSE CONCAT(NEW.slug, '-s', season_number, 'e', episode_number)
+				END WHERE show_id = NEW.id;
 				RETURN NEW;
 			END
 			$$;");
-	        
 			// language=PostgreSQL
 			migrationBuilder.Sql(@"
 			CREATE TRIGGER show_slug_trigger AFTER UPDATE OF slug ON shows
 			FOR EACH ROW EXECUTE PROCEDURE show_slug_update();");
 			
+			// language=PostgreSQL
+			migrationBuilder.Sql(@"
+			CREATE FUNCTION episode_update_tracks_slug()
+			RETURNS TRIGGER
+			LANGUAGE PLPGSQL
+			AS $$
+			BEGIN
+				UPDATE tracks SET slug = CONCAT(
+					NEW.slug,
+					'.', language,
+					CASE (track_index)
+						WHEN 0 THEN ''
+						ELSE CONCAT('-', track_index)
+					END,
+					CASE (is_forced)
+						WHEN false THEN ''
+						ELSE '-forced'
+					END,
+					'.', type
+				) WHERE episode_id = NEW.id;
+				RETURN NEW;
+			END;
+			$$;");
+			// language=PostgreSQL
+			migrationBuilder.Sql(@"
+			CREATE TRIGGER episode_track_slug_trigger AFTER UPDATE OF slug ON episodes
+			FOR EACH ROW EXECUTE PROCEDURE episode_update_tracks_slug();");
+			
+			// language=PostgreSQL
+			migrationBuilder.Sql(@"
+			CREATE FUNCTION track_slug_update()
+			RETURNS TRIGGER
+			LANGUAGE PLPGSQL
+			AS $$
+			BEGIN
+				IF NEW.track_index = 0 THEN
+					NEW.track_index := (SELECT COUNT(*) FROM tracks
+						WHERE episode_id = NEW.episode_id AND type = NEW.type 
+						  AND language = NEW.language AND is_forced = NEW.is_forced);
+				END IF;
+				NEW.slug := CONCAT(
+					(SELECT slug FROM episodes WHERE id = NEW.episode_id),
+					'.', NEW.language,
+					CASE (NEW.track_index)
+						WHEN 0 THEN ''
+						ELSE CONCAT('-', NEW.track_index)
+					END,
+					CASE (NEW.is_forced)
+						WHEN false THEN ''
+						ELSE '-forced'
+					END,
+					'.', NEW.type
+				);
+				RETURN NEW;
+			END
+			$$;");
+			// language=PostgreSQL
+			migrationBuilder.Sql(@"
+			CREATE TRIGGER track_slug_trigger 
+			BEFORE INSERT OR UPDATE OF episode_id, is_forced, language, track_index, type ON tracks
+			FOR EACH ROW EXECUTE PROCEDURE track_slug_update();");
+
 
 			// language=PostgreSQL
 			migrationBuilder.Sql(@"
@@ -112,6 +172,14 @@ namespace Kyoo.Postgresql.Migrations
 			// language=PostgreSQL
 			migrationBuilder.Sql(@"DROP FUNCTION episode_slug_update;");
 			// language=PostgreSQL
+			migrationBuilder.Sql("DROP TRIGGER track_slug_trigger ON tracks;");
+			// language=PostgreSQL
+			migrationBuilder.Sql(@"DROP FUNCTION track_slug_update;");
+			// language=PostgreSQL
+			migrationBuilder.Sql("DROP TRIGGER episode_track_slug_trigger ON episodes;");
+			// language=PostgreSQL
+			migrationBuilder.Sql(@"DROP FUNCTION episode_update_tracks_slug;");
+			// language=PostgreSQL
 			migrationBuilder.Sql(@"DROP VIEW library_items;");
 		}
 	}

Kyoo.SqLite/Migrations/20210626141347_Triggers.cs

@@ -25,13 +25,13 @@ namespace Kyoo.SqLite.Migrations
 			migrationBuilder.Sql(@"
 			CREATE TRIGGER EpisodeSlugInsert AFTER INSERT ON Episodes FOR EACH ROW 
 			BEGIN 
-			    UPDATE Episodes 
-			    	SET Slug = (SELECT Slug from Shows WHERE ID = ShowID) || 
-			    	           CASE
-			    	               WHEN SeasonNumber IS NULL AND AbsoluteNumber IS NULL THEN ''
-			    	               WHEN SeasonNumber IS NULL THEN '-' || AbsoluteNumber
-			    	               ELSE '-s' || SeasonNumber || 'e' || EpisodeNumber
-			    	           END
+				UPDATE Episodes 
+					SET Slug = (SELECT Slug from Shows WHERE ID = ShowID) || 
+					           CASE
+						           WHEN SeasonNumber IS NULL AND AbsoluteNumber IS NULL THEN ''
+						           WHEN SeasonNumber IS NULL THEN '-' || AbsoluteNumber
+						           ELSE '-s' || SeasonNumber || 'e' || EpisodeNumber
+					           END
 				WHERE ID == new.ID;
 			END");
 			// language=SQLite
@@ -39,29 +39,114 @@ namespace Kyoo.SqLite.Migrations
 			CREATE TRIGGER EpisodeSlugUpdate AFTER UPDATE OF AbsoluteNumber, EpisodeNumber, SeasonNumber, ShowID 
 			    ON Episodes FOR EACH ROW 
 			BEGIN 
-			    UPDATE Episodes 
-			    	SET Slug = (SELECT Slug from Shows WHERE ID = ShowID) || 
-			    	           CASE
-			    	               WHEN SeasonNumber IS NULL AND AbsoluteNumber IS NULL THEN ''
-			    	               WHEN SeasonNumber IS NULL THEN '-' || AbsoluteNumber
-			    	               ELSE '-s' || SeasonNumber || 'e' || EpisodeNumber
-			    	           END
+				UPDATE Episodes 
+					SET Slug = (SELECT Slug from Shows WHERE ID = ShowID) || 
+					           CASE
+						           WHEN SeasonNumber IS NULL AND AbsoluteNumber IS NULL THEN ''
+						           WHEN SeasonNumber IS NULL THEN '-' || AbsoluteNumber
+						           ELSE '-s' || SeasonNumber || 'e' || EpisodeNumber
+					           END
 				WHERE ID == new.ID;
 			END");
 
+			// language=SQLite
+			migrationBuilder.Sql(@"
+			CREATE TRIGGER TrackSlugInsert 
+			AFTER INSERT ON Tracks
+			FOR EACH ROW
+			BEGIN
+				UPDATE Tracks SET TrackIndex = (
+						SELECT COUNT(*) FROM Tracks
+						WHERE EpisodeID = new.EpisodeID AND Type = new.Type
+						  AND Language = new.Language AND IsForced = new.IsForced
+					) WHERE ID = new.ID AND TrackIndex = 0;
+				UPDATE Tracks SET Slug = (SELECT Slug FROM Episodes WHERE ID = EpisodeID) ||
+						'.' || Language ||
+						CASE (TrackIndex)
+							WHEN 0 THEN ''
+							ELSE '-' || (TrackIndex)
+						END ||
+						CASE (IsForced)
+							WHEN false THEN ''
+							ELSE '-forced'
+						END ||
+						CASE (Type)
+							WHEN 1 THEN '.video'
+							WHEN 2 THEN '.audio'
+							WHEN 3 THEN '.subtitle'
+							ELSE '.' || Type
+						END
+					WHERE ID = new.ID;
+			END;");
+			// language=SQLite
+			migrationBuilder.Sql(@"
+			CREATE TRIGGER TrackSlugUpdate 
+			AFTER UPDATE OF EpisodeID, IsForced, Language, TrackIndex, Type ON Tracks
+			FOR EACH ROW
+			BEGIN
+				UPDATE Tracks SET TrackIndex = (
+						SELECT COUNT(*) FROM Tracks
+						WHERE EpisodeID = new.EpisodeID AND Type = new.Type
+						  AND Language = new.Language AND IsForced = new.IsForced
+					) WHERE ID = new.ID AND TrackIndex = 0;
+				UPDATE Tracks SET Slug = 
+					    (SELECT Slug FROM Episodes WHERE ID = EpisodeID) ||
+						'.' || Language ||
+						CASE (TrackIndex)
+							WHEN 0 THEN ''
+							ELSE '-' || (TrackIndex)
+						END ||
+						CASE (IsForced)
+							WHEN false THEN ''
+							ELSE '-forced'
+						END ||
+						CASE (Type)
+							WHEN 1 THEN '.video'
+							WHEN 2 THEN '.audio'
+							WHEN 3 THEN '.subtitle'
+							ELSE '.' || Type
+						END
+					WHERE ID = new.ID;
+			END;");
+			// language=SQLite
+			migrationBuilder.Sql(@"
+			CREATE TRIGGER EpisodeUpdateTracksSlug 
+			AFTER UPDATE OF Slug ON Episodes
+			FOR EACH ROW
+			BEGIN
+				UPDATE Tracks SET Slug =
+						NEW.Slug ||
+						'.' || Language ||
+						CASE (TrackIndex)
+							WHEN 0 THEN ''
+							ELSE '-' || TrackIndex
+						END ||
+						CASE (IsForced)
+							WHEN false THEN ''
+							ELSE '-forced'
+						END ||
+						CASE (Type)
+							WHEN 1 THEN '.video'
+							WHEN 2 THEN '.audio'
+							WHEN 3 THEN '.subtitle'
+							ELSE '.' || Type
+						END
+					WHERE EpisodeID = NEW.ID;
+			END;");
+
 
 			// language=SQLite
 			migrationBuilder.Sql(@"
 			CREATE TRIGGER ShowSlugUpdate AFTER UPDATE OF Slug ON Shows FOR EACH ROW
 			BEGIN
-			    UPDATE Seasons SET Slug = new.Slug || '-s' || SeasonNumber WHERE ShowID = new.ID;
-			    UPDATE Episodes 
-			    	SET Slug = new.Slug || 
-			    	           CASE
-			    	               WHEN SeasonNumber IS NULL AND AbsoluteNumber IS NULL THEN ''
-			    	               WHEN SeasonNumber IS NULL THEN '-' || AbsoluteNumber
-			    	               ELSE '-s' || SeasonNumber || 'e' || EpisodeNumber
-			    	           END
+				UPDATE Seasons SET Slug = new.Slug || '-s' || SeasonNumber WHERE ShowID = new.ID;
+				UPDATE Episodes 
+					SET Slug = new.Slug || 
+					           CASE
+					               WHEN SeasonNumber IS NULL AND AbsoluteNumber IS NULL THEN ''
+					               WHEN SeasonNumber IS NULL THEN '-' || AbsoluteNumber
+					               ELSE '-s' || SeasonNumber || 'e' || EpisodeNumber
+					           END
 				WHERE ShowID = new.ID;
 			END;");
 			

Kyoo.Tests/KAssert.cs

@@ -1,4 +1,3 @@
-using System.Linq;
 using System.Reflection;
 using JetBrains.Annotations;
 using Xunit;

Kyoo.Tests/Library/SpecificTests/TrackTests.cs

@@ -1,3 +1,4 @@
+using System.Threading.Tasks;
 using Kyoo.Controllers;
 using Kyoo.Models;
 using Xunit;
@@ -34,5 +35,17 @@ namespace Kyoo.Tests.Library
 		{
 			_repository = repositories.LibraryManager.TrackRepository;
 		}
+		
+		[Fact]
+		public async Task SlugEditTest()
+		{
+			await Repositories.LibraryManager.ShowRepository.Edit(new Show
+			{
+				ID = 1,
+				Slug = "new-slug"
+			}, false);
+			Track track = await _repository.Get(1);
+			Assert.Equal("new-slug-s1e1.eng-1.subtitle", track.Slug);
+		}
 	}
 }

Kyoo/Controllers/Repositories/EpisodeRepository.cs

@@ -127,7 +127,7 @@ namespace Kyoo.Controllers
 			
 			if (changed.Tracks != null || resetOld)
 			{
-				await Database.Entry(resource).Collection(x => x.Tracks).LoadAsync();
+				await _tracks.DeleteAll(x => x.EpisodeID == resource.ID);
 				resource.Tracks = changed.Tracks;
 				await ValidateTracks(resource);
 			}
@@ -148,14 +148,10 @@ namespace Kyoo.Controllers
 		/// <returns>The <see cref="resource"/> parameter is returned.</returns>
 		private async Task<Episode> ValidateTracks(Episode resource)
 		{
-			resource.Tracks = await TaskUtils.DefaultIfNull(resource.Tracks?.MapAsync((x, i) =>
+			resource.Tracks = await TaskUtils.DefaultIfNull(resource.Tracks?.SelectAsync(x =>
 			{
 				x.Episode = resource;
-				// TODO use a trigger for the next line.
-				x.TrackIndex = resource.Tracks.Take(i).Count(y => x.Language == y.Language
-				                                                  && x.IsForced == y.IsForced 
-				                                                  && x.Codec == y.Codec 
-				                                                  && x.Type == y.Type);
+				x.EpisodeSlug = resource.Slug;
 				return _tracks.Create(x);
 			}).ToListAsync());
 			return resource;

Kyoo/Controllers/Repositories/TrackRepository.cs

@@ -1,11 +1,8 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using System.Linq.Expressions;
-using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using Kyoo.Models;
-using Kyoo.Models.Exceptions;
 using Microsoft.EntityFrameworkCore;
 
 namespace Kyoo.Controllers
@@ -34,56 +31,6 @@ namespace Kyoo.Controllers
 			_database = database;
 		}
 
-
-		/// <inheritdoc />
-		Task<Track> IRepository<Track>.Get(string slug)
-		{
-			return Get(slug);
-		}
-
-		/// <inheritdoc />
-		public async Task<Track> Get(string slug, StreamType type = StreamType.Unknown)
-		{
-			Track ret = await GetOrDefault(slug, type);
-			if (ret == null)
-				throw new ItemNotFoundException($"No track found with the slug {slug} and the type {type}.");
-			return ret;
-		}
-		
-		/// <inheritdoc />
-		public Task<Track> GetOrDefault(string slug, StreamType type = StreamType.Unknown)
-		{
-			Match match = Regex.Match(slug,
-				@"(?<show>.*)-s(?<season>\d+)e(?<episode>\d+)(\.(?<type>\w*))?\.(?<language>.{0,3})(?<forced>-forced)?(\..*)?");
-
-			if (!match.Success)
-			{
-				if (int.TryParse(slug, out int id))
-					return GetOrDefault(id);
-				match = Regex.Match(slug, @"(?<show>.*)\.(?<language>.{0,3})(?<forced>-forced)?(\..*)?");
-				if (!match.Success)
-					throw new ArgumentException("Invalid track slug. " +
-					                            "Format: {episodeSlug}.{language}[-forced][.{extension}]");
-			}
-
-			string showSlug = match.Groups["show"].Value;
-			int? seasonNumber = match.Groups["season"].Success ? int.Parse(match.Groups["season"].Value) : null;
-			int? episodeNumber = match.Groups["episode"].Success ? int.Parse(match.Groups["episode"].Value) : null;
-			string language = match.Groups["language"].Value;
-			bool forced = match.Groups["forced"].Success;
-			if (match.Groups["type"].Success)
-				type = Enum.Parse<StreamType>(match.Groups["type"].Value, true);
-
-			IQueryable<Track> query = _database.Tracks.Where(x => x.Episode.Show.Slug == showSlug
-			                                                      && x.Episode.SeasonNumber == seasonNumber
-			                                                      && x.Episode.EpisodeNumber == episodeNumber
-			                                                      && x.Language == language
-			                                                      && x.IsForced == forced);
-			if (type != StreamType.Unknown)
-				return query.FirstOrDefaultAsync(x => x.Type == type);
-			return query.FirstOrDefaultAsync();
-		}
-
 		/// <inheritdoc />
 		public override Task<ICollection<Track>> Search(string query)
 		{
@@ -93,6 +40,9 @@ namespace Kyoo.Controllers
 		/// <inheritdoc />
 		public override async Task<Track> Create(Track obj)
 		{
+			if (obj == null)
+				throw new ArgumentNullException(nameof(obj));
+
 			if (obj.EpisodeID <= 0)
 			{
 				obj.EpisodeID = obj.Episode?.ID ?? 0;
@@ -102,14 +52,7 @@ namespace Kyoo.Controllers
 			
 			await base.Create(obj);
 			_database.Entry(obj).State = EntityState.Added;
-			// ReSharper disable once ParameterOnlyUsedForPreconditionCheck.Local
-			await _database.SaveOrRetry(obj, (x, i) =>
-			{
-				if (i > 10)
-					throw new DuplicatedItemException($"More than 10 same tracks exists {x.Slug}. Aborting...");
-				x.TrackIndex++;
-				return x;
-			});
+			await _database.SaveChangesAsync();
 			return obj;
 		}
 

Kyoo/Startup.cs

@@ -5,7 +5,6 @@ using Kyoo.Controllers;
 using Kyoo.Models;
 using Kyoo.Models.Options;
 using Kyoo.Postgresql;
-using Kyoo.SqLite;
 using Kyoo.Tasks;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;

Kyoo/Views/SubtitleApi.cs

@@ -1,5 +1,4 @@
-using System;
-using Kyoo.Models;
+using Kyoo.Models;
 using Microsoft.AspNetCore.Mvc;
 using System.Collections.Generic;
 using System.IO;
@@ -27,19 +26,9 @@ namespace Kyoo.Api
 		[Permission(nameof(SubtitleApi), Kind.Read)]
 		public async Task<IActionResult> GetSubtitle(string slug, string extension)
 		{
-			Track subtitle;
-			try
-			{
-				subtitle = await _libraryManager.GetOrDefault(slug, StreamType.Subtitle);
-			}
-			catch (ArgumentException ex)
-			{
-				return BadRequest(new {error = ex.Message});
-			}
-
-			if (subtitle is not {Type: StreamType.Subtitle})
+			Track subtitle = await _libraryManager.GetOrDefault<Track>(Track.EditSlug(slug, StreamType.Subtitle));
+			if (subtitle == null)
 				return NotFound();
-			
 			if (subtitle.Codec == "subrip" && extension == "vtt")
 				return new ConvertSubripToVtt(subtitle.Path, _files);
 			return _files.FileResult(subtitle.Path);