From bcdbadbede613e779d527cb2cde5546c8025fec6 Mon Sep 17 00:00:00 2001
From: Taloth Saldono <Taloth@users.noreply.github.com>
Date: Fri, 7 May 2021 20:17:05 +0200
Subject: [PATCH] Simplify release titles before applying scene naming
 exception regex filter

---
 .../Scene/SceneMappingService.cs              |  4 ++-
 src/NzbDrone.Core/Parser/Parser.cs            | 26 +++++++++++++++++++
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/src/NzbDrone.Core/DataAugmentation/Scene/SceneMappingService.cs b/src/NzbDrone.Core/DataAugmentation/Scene/SceneMappingService.cs
index a87f5b374..dd088f851 100644
--- a/src/NzbDrone.Core/DataAugmentation/Scene/SceneMappingService.cs
+++ b/src/NzbDrone.Core/DataAugmentation/Scene/SceneMappingService.cs
@@ -231,7 +231,9 @@ namespace NzbDrone.Core.DataAugmentation.Scene
                 return normalCandidates;
             }
 
-            filteredCandidates = filteredCandidates.Where(v => Regex.IsMatch(releaseTitle, v.FilterRegex)).ToList();
+            var simpleTitle = Parser.Parser.SimplifyTitle(releaseTitle);
+
+            filteredCandidates = filteredCandidates.Where(v => Regex.IsMatch(simpleTitle, v.FilterRegex)).ToList();
 
             if (filteredCandidates.Any())
             {
diff --git a/src/NzbDrone.Core/Parser/Parser.cs b/src/NzbDrone.Core/Parser/Parser.cs
index 170698991..857b640b4 100644
--- a/src/NzbDrone.Core/Parser/Parser.cs
+++ b/src/NzbDrone.Core/Parser/Parser.cs
@@ -469,6 +469,32 @@ namespace NzbDrone.Core.Parser
             return result;
         }
 
+        public static string SimplifyTitle(string title)
+        {
+            if (!ValidateBeforeParsing(title)) return title;
+
+            Logger.Debug("Parsing string '{0}'", title);
+
+            if (ReversedTitleRegex.IsMatch(title))
+            {
+                var titleWithoutExtension = RemoveFileExtension(title).ToCharArray();
+                Array.Reverse(titleWithoutExtension);
+
+                title = new string(titleWithoutExtension) + title.Substring(titleWithoutExtension.Length);
+
+                Logger.Debug("Reversed name detected. Converted to '{0}'", title);
+            }
+
+            var simpleTitle = title;
+
+            simpleTitle = WebsitePrefixRegex.Replace(simpleTitle);
+            simpleTitle = WebsitePostfixRegex.Replace(simpleTitle);
+
+            simpleTitle = CleanTorrentSuffixRegex.Replace(simpleTitle);
+
+            return simpleTitle;
+        }
+
         public static ParsedEpisodeInfo ParseTitle(string title)
         {
             try