From 5fe1ce1effc16046b27e27f6a007db76667479f7 Mon Sep 17 00:00:00 2001
From: Mark McDowall <mark@mcdowall.ca>
Date: Wed, 8 May 2019 21:58:50 -0700
Subject: [PATCH] Fixed: Don't import duplicate NFO extra files

Fixes #2641
---
 src/NzbDrone.Core/Extras/ExtraService.cs | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/NzbDrone.Core/Extras/ExtraService.cs b/src/NzbDrone.Core/Extras/ExtraService.cs
index ce5b660b6..1f089e4ab 100644
--- a/src/NzbDrone.Core/Extras/ExtraService.cs
+++ b/src/NzbDrone.Core/Extras/ExtraService.cs
@@ -71,9 +71,28 @@ namespace NzbDrone.Core.Extras
                                                                      .Select(e => e.Trim(' ', '.'))
                                                                      .ToList();
 
-            var matchingFilenames = files.Where(f => Path.GetFileNameWithoutExtension(f).StartsWith(sourceFileName, StringComparison.InvariantCultureIgnoreCase));
+            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);
+            }
+
+            foreach (var matchingFilename in filteredFilenames)
             {
                 var matchingExtension = wantedExtensions.FirstOrDefault(e => matchingFilename.EndsWith(e));