New: Parsing titles with multiple translated titles

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

@@ -76,6 +76,7 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("Series T Se.3 afl.3 en 4", "Series T", 3, new[] { 3, 4 })]
         [TestCase("Series Title (S15E06-08) City Sushi", "Series Title", 15, new[] { 6, 7, 8 })]
         [TestCase("Босх: Спадок (S2E1-4) / Series: Legacy (S2E1-4) (2023) WEB-DL 1080p Ukr/Eng | sub Eng", "Series: Legacy", 2, new[] { 1, 2, 3, 4 })]
+        [TestCase("Босх: Спадок / Series: Legacy / S2E1-4 of 10 (2023) WEB-DL 1080p Ukr/Eng | sub Eng", "Series: Legacy", 2, new[] { 1, 2, 3, 4 })]
 
         // [TestCase("", "", , new [] {  })]
         public void should_parse_multiple_episodes(string postTitle, string title, int season, int[] episodes)

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

@@ -94,6 +94,7 @@ namespace NzbDrone.Core.Test.ParserTests
         }
 
         [TestCase("Босх: Спадок (S2E1) / Series: Legacy (S2E1) (2023) WEB-DL 1080p Ukr/Eng | sub Eng", "Босх: Спадок", "Series: Legacy")]
+        [TestCase("Босх: Спадок / Series: Legacy / S2E1-4 of 10 (2023) WEB-DL 1080p Ukr/Eng | sub Eng", "Босх: Спадок", "Series: Legacy")]
         public void should_parse_multiple_series_titles(string postTitle, params string[] titles)
         {
             var seriesTitleInfo = Parser.Parser.ParseTitle(postTitle).SeriesTitleInfo;

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

@@ -165,6 +165,7 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("Series Title [HDTV][Cap.402](website.com).avi", "Series Title", 4, 2)]
         [TestCase("Series Title [HDTV 720p][Cap.101](website.com).mkv", "Series Title", 1, 1)]
         [TestCase("Босх: Спадок (S2E1) / Series: Legacy (S2E1) (2023) WEB-DL 1080p Ukr/Eng | sub Eng", "Series: Legacy", 2, 1)]
+        [TestCase("Босх: Спадок / Series: Legacy / S2E1 of 10 (2023) WEB-DL 1080p Ukr/Eng | sub Eng", "Series: Legacy", 2, 1)]
 
         // [TestCase("", "", 0, 0)]
         public void should_parse_single_episode(string postTitle, string title, int seasonNumber, int episodeNumber)

src/NzbDrone.Core/Parser/Parser.cs

@@ -182,6 +182,10 @@ namespace NzbDrone.Core.Parser
                 new Regex(@"^(?<title>.+?)?\W*(?<airyear>\d{4})\W+(?<airmonth>[0-1][0-9])\W+(?<airday>[0-3][0-9])(?!\W+[0-3][0-9]).+?(?:s?(?<season>(?<!\d+)(?:\d{1,2})(?!\d+)))(?:[ex](?<episode>(?<!\d+)(?:\d{1,3})(?!\d+)))",
                           RegexOptions.IgnoreCase | RegexOptions.Compiled),
 
+                // Single or multi episode releases with multiple titles, then season and episode numbers after the last title. (Title1 / Title2 / ... / S1E1-2 of 6)
+                new Regex(@"^((?<title>.*?)[ ._]\/[ ._])+\(?S(?<season>(?<!\d+)\d{1,2}(?!\d+))(?:\W|_)?E?[ ._]?(?<episode>(?<!\d+)\d{1,2}(?!\d+))(?:-(?<episode>(?<!\d+)\d{1,2}(?!\d+)))?([ ._]of[ ._]\d+)?\)?[ ._][\(\[]",
+                    RegexOptions.IgnoreCase | RegexOptions.Compiled),
+
                 // Multi-episode with title (S01E05-06, S01E05-6)
                 new Regex(@"^(?<title>.+?)(?:[-_\W](?<![()\[!]))+S(?<season>(?<!\d+)(?:\d{1,2})(?!\d+))E(?<episode>\d{1,2}(?!\d+))(?:-(?<episode>\d{1,2}(?!\d+)))+(?:[-_. ]|$)",
                     RegexOptions.IgnoreCase | RegexOptions.Compiled),