Fixed: Ignore episode title when parsing release group

Fixes #3097

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

@@ -36,6 +36,8 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("The.Walking.Dead.S09E12.Guardians.REPACK.1080p.AMZN.WEB-DL.DD.5.1.H.264-CasStudio-BUYMORE", "CasStudio")]
         [TestCase("Series Title - S01E01 - Episode Title [RlsGroup]", "RlsGroup")]
         [TestCase("Black Monday S01 E01-E02 1080p AMZN WEBRip DDP5.1 x264 monkee", null)]
+        [TestCase("Series.Title.S01E05.The-Aniversary.WEBDL-1080p.mkv", null)]
+        [TestCase("Series.Title.S01E05.The-Aniversary.HDTV-1080p.mkv", null)]
         //[TestCase("", "")]
         public void should_parse_release_group(string title, string expected)
         {

src/NzbDrone.Core/Parser/Parser.cs

@@ -348,7 +348,7 @@ namespace NzbDrone.Core.Parser
         private static readonly Regex CleanQualityBracketsRegex = new Regex(@"\[[a-z0-9 ._-]+\]$",
                                                                    RegexOptions.IgnoreCase | RegexOptions.Compiled);
 
-        private static readonly Regex ReleaseGroupRegex = new Regex(@"-(?<releasegroup>[a-z0-9]+)(?<!WEB-DL|480p|720p|1080p|2160p)(?:\b|[-._ ])|[-._ ]\[(?<releasegroup>[a-z0-9]+)\]$",
+        private static readonly Regex ReleaseGroupRegex = new Regex(@"-(?<releasegroup>[a-z0-9]+(?!.+?(?:480p|720p|1080p|2160p)))(?<!.*?WEB-DL|480p|720p|1080p|2160p)(?:\b|[-._ ]|$)|[-._ ]\[(?<releasegroup>[a-z0-9]+)\]$",
                                                                 RegexOptions.IgnoreCase | RegexOptions.Compiled);