Fixed: Add series searching improvements

src/NzbDrone.Core.Test/MetadataSourceTests/TraktSearchSeriesComparerFixture.cs

@@ -0,0 +1,71 @@
+using System.Collections.Generic;
+using System.Linq;
+using FluentAssertions;
+using NUnit.Framework;
+using NzbDrone.Core.MetadataSource;
+using NzbDrone.Core.Test.Framework;
+using NzbDrone.Core.Tv;
+
+namespace NzbDrone.Core.Test.MetadataSourceTests
+{
+    [TestFixture]
+    public class TraktSearchSeriesComparerFixture : CoreTest
+    {
+        private List<Series> _series;
+
+        [SetUp]
+        public void Setup()
+        {
+            _series = new List<Series>();
+        }
+
+        private void WithSeries(string title)
+        {
+            _series.Add(new Series { Title = title });
+        }
+
+        [Test]
+        public void should_prefer_the_walking_dead_over_talking_dead_when_searching_for_the_walking_dead()
+        {
+            WithSeries("Talking Dead");
+            WithSeries("The Walking Dead");
+
+            _series.Sort(new TraktSearchSeriesComparer("the walking dead"));
+
+            _series.First().Title.Should().Be("The Walking Dead");
+        }
+
+        [Test]
+        public void should_prefer_the_walking_dead_over_talking_dead_when_searching_for_walking_dead()
+        {
+            WithSeries("Talking Dead");
+            WithSeries("The Walking Dead");
+
+            _series.Sort(new TraktSearchSeriesComparer("walking dead"));
+
+            _series.First().Title.Should().Be("The Walking Dead");
+        }
+
+        [Test]
+        public void should_prefer_blacklist_over_the_blacklist_when_searching_for_blacklist()
+        {
+            WithSeries("The Blacklist");
+            WithSeries("Blacklist");
+
+            _series.Sort(new TraktSearchSeriesComparer("blacklist"));
+
+            _series.First().Title.Should().Be("Blacklist");
+        }
+
+        [Test]
+        public void should_prefer_the_blacklist_over_blacklist_when_searching_for_the_blacklist()
+        {
+            WithSeries("Blacklist");
+            WithSeries("The Blacklist");
+
+            _series.Sort(new TraktSearchSeriesComparer("the blacklist"));
+
+            _series.First().Title.Should().Be("The Blacklist");
+        }
+    }
+}

src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj

@@ -225,6 +225,7 @@
     <Compile Include="MediaFiles\EpisodeImport\Specifications\UpgradeSpecificationFixture.cs" />
     <Compile Include="MediaFiles\ImportApprovedEpisodesFixture.cs" />
     <Compile Include="MediaFiles\MediaFileRepositoryFixture.cs" />
+    <Compile Include="MetadataSourceTests\TraktSearchSeriesComparerFixture.cs" />
     <Compile Include="ParserTests\MiniSeriesEpisodeParserFixture.cs" />
     <Compile Include="Qualities\RevisionComparableFixture.cs" />
     <Compile Include="RemotePathMappingsTests\RemotePathMappingServiceFixture.cs" />

src/NzbDrone.Core/MetadataSource/TraktSearchSeriesComparer.cs

@@ -10,6 +10,7 @@ namespace NzbDrone.Core.MetadataSource
     {
         private static readonly Regex RegexCleanPunctuation = new Regex("[-._:]", RegexOptions.Compiled);
         private static readonly Regex RegexCleanCountryYearPostfix = new Regex(@"(?<=.+)( \([A-Z]{2}\)| \(\d{4}\)| \([A-Z]{2}\) \(\d{4}\))$", RegexOptions.Compiled);
+        private static readonly Regex ArticleRegex = new Regex(@"^(a|an|the)\s", RegexOptions.IgnoreCase | RegexOptions.Compiled);
 
         public String SearchQuery { get; private set; }
 
@@ -37,6 +38,14 @@ namespace NzbDrone.Core.MetadataSource
             int result = 0;
 
             // Prefer exact matches
+            result = Compare(x, y, s => CleanPunctuation(s.Title).Equals(CleanPunctuation(SearchQuery)));
+            if (result != 0) return -result;
+
+            // Remove Articles (a/an/the)
+            result = Compare(x, y, s => CleanArticles(s.Title).Equals(CleanArticles(SearchQuery)));
+            if (result != 0) return -result;
+
+            // Prefer close matches
             result = Compare(x, y, s => CleanPunctuation(s.Title).LevenshteinDistance(CleanPunctuation(SearchQuery)) <= 1);
             if (result != 0) return -result;
 
@@ -47,7 +56,7 @@ namespace NzbDrone.Core.MetadataSource
             // Compare prefix matches by year "(CSI: ..."
             result = CompareWithYear(x, y, s => s.Title.ToLowerInvariant().StartsWith(_searchQueryWithoutYear + ":"));
             if (result != 0) return -result;
-
+         
             return Compare(x, y, s => SearchQuery.LevenshteinDistanceClean(s.Title) - GetYearFactor(s));
         }
         
@@ -94,6 +103,13 @@ namespace NzbDrone.Core.MetadataSource
             return title.ToLowerInvariant();
         }
 
+        private String CleanArticles(String title)
+        {
+            title = ArticleRegex.Replace(title, "");
+
+            return title.Trim().ToLowerInvariant();
+        }
+
         private Int32 GetYearFactor(Series series)
         {
             if (_year.HasValue)

src/UI/AddSeries/AddSeriesView.js

@@ -167,6 +167,7 @@ define(
                 if (!this.isClosed) {
                     this.ui.searchBar.show();
                     this.searchResult.show(new ErrorView({term: this.collection.term}));
+                    this.collection.term = '';
                 }
             }
         });