Fixed: Use original file path when calculating preferred word score for existing file

Closes #3488
Closes #3913

src/NzbDrone.Core.Test/MediaFiles/EpisodeFilePreferredWordCalculatorFixture.cs

@@ -1,3 +1,4 @@
+using System.IO;
 using FizzWare.NBuilder;
 using FluentAssertions;
 using Moq;
@@ -76,5 +77,37 @@ namespace NzbDrone.Core.Test.MediaFiles
 
             Subject.Calculate(_series, _episodeFile).Should().Be(20);
         }
+
+        [Test]
+        public void should_return_score_for_original_path_folder_name_if_highest()
+        {
+            var folderName = "folder-name";
+            var fileName = "file-name";
+
+            _episodeFile.OriginalFilePath = Path.Combine(folderName, fileName);
+
+            GivenPreferredWordScore(_episodeFile.RelativePath, 20);
+            GivenPreferredWordScore(_episodeFile.Path, 50);
+            GivenPreferredWordScore(folderName, 60);
+            GivenPreferredWordScore(fileName, 50);
+
+            Subject.Calculate(_series, _episodeFile).Should().Be(60);
+        }
+
+        [Test]
+        public void should_return_score_for_original_path_file_name_if_highest()
+        {
+            var folderName = "folder-name";
+            var fileName = "file-name";
+
+            _episodeFile.OriginalFilePath = Path.Combine(folderName, fileName);
+
+            GivenPreferredWordScore(_episodeFile.RelativePath, 20);
+            GivenPreferredWordScore(_episodeFile.Path, 50);
+            GivenPreferredWordScore(folderName, 40);
+            GivenPreferredWordScore(fileName, 50);
+
+            Subject.Calculate(_series, _episodeFile).Should().Be(50);
+        }
     }
 }

src/NzbDrone.Core/MediaFiles/EpisodeFilePreferredWordCalculator.cs

@@ -1,4 +1,8 @@
 using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Web.UI;
+using Newtonsoft.Json.Serialization;
 using NLog;
 using NzbDrone.Common.Extensions;
 using NzbDrone.Core.Profiles.Releases;
@@ -21,6 +25,7 @@ namespace NzbDrone.Core.MediaFiles
             _preferredWordService = preferredWordService;
             _logger = logger;
         }
+
         public int Calculate(Series series, EpisodeFile episodeFile)
         {
             var scores = new List<int>();
@@ -34,6 +39,24 @@ namespace NzbDrone.Core.MediaFiles
                 _logger.Trace("No stored scene name for {0}", episodeFile);
             }
 
+            // The file may not have a screen name if the file/folder name contained spaces, but the original path is still store and valuable.
+            if (episodeFile.OriginalFilePath.IsNotNullOrWhiteSpace())
+            {
+                var segments = episodeFile.OriginalFilePath.Split(Path.DirectorySeparatorChar).ToList();
+
+                for (int i = 0; i < segments.Count; i++)
+                {
+                    var isLast = i == segments.Count - 1;
+                    var segment = isLast ? Path.GetFileNameWithoutExtension(segments[i]) : segments[i];
+
+                    scores.Add(_preferredWordService.Calculate(series, segment, 0));
+                }
+            }
+            else
+            {
+                _logger.Trace("No stored scene name for {0}", episodeFile);
+            }
+
             // Calculate using RelativePath or Path, but not both
             if (episodeFile.RelativePath.IsNotNullOrWhiteSpace())
             {