Merge pull request #81 from Taloth/search-improvements

Search improvements

src/NzbDrone.Common.Test/LevenshteinDistanceFixture.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using FluentAssertions;
+using Moq;
+using NUnit.Framework;
+using NzbDrone.Common.EnvironmentInfo;
+using NzbDrone.Test.Common;
+
+namespace NzbDrone.Common.Test
+{
+    [TestFixture]
+    public class LevenshteinDistanceFixture : TestBase
+    {
+        [TestCase("", "", 0)]
+        [TestCase("abc", "abc", 0)]
+        [TestCase("abc", "abcd", 1)]
+        [TestCase("abcd", "abc", 1)]
+        [TestCase("abc", "abd", 1)]
+        [TestCase("abc", "adc", 1)]
+        [TestCase("abcdefgh", "abcghdef", 4)]
+        [TestCase("a.b.c.", "abc", 3)]
+        [TestCase("Agents Of SHIELD", "Marvel's Agents Of S.H.I.E.L.D.", 15)]
+        [TestCase("Agents of cracked", "Agents of shield", 6)]
+        [TestCase("ABCxxx", "ABC1xx", 1)]
+        [TestCase("ABC1xx", "ABCxxx", 1)]
+        public void LevenshteinDistance(String text, String other, Int32 expected)
+        {
+            text.LevenshteinDistance(other).Should().Be(expected);
+        }
+
+        [TestCase("", "", 0)]
+        [TestCase("abc", "abc", 0)]
+        [TestCase("abc", "abcd", 1)]
+        [TestCase("abcd", "abc", 3)]
+        [TestCase("abc", "abd", 3)]
+        [TestCase("abc", "adc", 3)]
+        [TestCase("abcdefgh", "abcghdef", 8)]
+        [TestCase("a.b.c.", "abc", 0)]
+        [TestCase("Agents of shield", "Marvel's Agents Of S.H.I.E.L.D.", 9)]
+        [TestCase("Agents of shield", "Agents of cracked", 14)]
+        [TestCase("Agents of shield", "the shield", 24)]
+        [TestCase("ABCxxx", "ABC1xx", 3)]
+        [TestCase("ABC1xx", "ABCxxx", 3)]
+        public void LevenshteinDistanceClean(String text, String other, Int32 expected)
+        {
+            text.ToLower().LevenshteinDistanceClean(other.ToLower()).Should().Be(expected);
+        }
+    }
+}

src/NzbDrone.Common.Test/NzbDrone.Common.Test.csproj

@@ -67,6 +67,7 @@
     <Compile Include="EnsureTest\PathExtensionFixture.cs" />
     <Compile Include="EnvironmentTests\StartupArgumentsFixture.cs" />
     <Compile Include="EnvironmentTests\EnvironmentProviderTest.cs" />
+    <Compile Include="LevenshteinDistanceFixture.cs" />
     <Compile Include="ReflectionExtensions.cs" />
     <Compile Include="PathExtensionFixture.cs" />
     <Compile Include="DiskProviderTests\DiskProviderFixtureBase.cs" />

src/NzbDrone.Common/LevenstheinExtensions.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+using ICSharpCode.SharpZipLib.Zip;
+
+namespace NzbDrone.Common
+{
+    public static class LevenstheinExtensions
+    {
+        public static Int32 LevenshteinDistance(this String text, String other, Int32 costInsert = 1, Int32 costDelete = 1, Int32 costSubstitute = 1)
+        {
+            if (text == other) return 0;
+            if (text.Length == 0) return other.Length * costInsert;
+            if (other.Length == 0) return text.Length * costDelete;
+
+            Int32[] matrix = new Int32[other.Length + 1];
+
+            for (var i = 1; i < matrix.Length; i++)
+            {
+                matrix[i] = i * costInsert;
+            }
+
+            for (var i = 0; i < text.Length; i++)
+            {
+                Int32 topLeft = matrix[0];
+                matrix[0] = matrix[0] + costDelete;
+
+                for (var j = 0; j < other.Length; j++)
+                {
+                    Int32 top = matrix[j];
+                    Int32 left = matrix[j + 1];
+
+                    var sumIns = top + costInsert;
+                    var sumDel = left + costDelete;
+                    var sumSub = topLeft + (text[i] == other[j] ? 0 : costSubstitute);
+
+                    topLeft = matrix[j + 1];
+                    matrix[j + 1] = Math.Min(Math.Min(sumIns, sumDel), sumSub);
+                }
+            }
+
+            return matrix[other.Length];
+        }
+
+        public static Int32 LevenshteinDistanceClean(this String expected, String other)
+        {
+            expected = expected.ToLower().Replace(".", "");
+            other = other.ToLower().Replace(".", "");
+
+            return expected.LevenshteinDistance(other, 1, 3, 3);
+        }
+    }
+}

src/NzbDrone.Common/NzbDrone.Common.csproj

@@ -114,6 +114,7 @@
     <Compile Include="Serializer\IntConverter.cs" />
     <Compile Include="Services.cs" />
     <Compile Include="Extensions\StreamExtensions.cs" />
+    <Compile Include="LevenstheinExtensions.cs" />
     <Compile Include="TPL\LimitedConcurrencyLevelTaskScheduler.cs" />
     <Compile Include="Security\IgnoreCertErrorPolicy.cs" />
     <Compile Include="StringExtensions.cs" />

src/NzbDrone.Core.Test/MediaFiles/EpisodeImport/Specifications/NotUnpackingSpecificationFixture.cs

@@ -36,7 +36,7 @@ namespace NzbDrone.Core.Test.MediaFiles.EpisodeImport.Specifications
 
         private void GivenInWorkingFolder()
         {
-            _localEpisode.Path = @"C:\Test\Unsorted TV\_UNPACK_30.rock\30.rock.s01e01.avi".AsOsAgnostic();
+            _localEpisode.Path = @"C:\Test\Unsorted TV\_UNPACK_30.rock\someSubFolder\30.rock.s01e01.avi".AsOsAgnostic();
         }
 
         private void GivenLastWriteTimeUtc(DateTime time)

src/NzbDrone.Core/Indexers/Newznab/NewznabParser.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Xml.Linq;
 using NzbDrone.Core.Parser.Model;
+using System.Globalization;
 
 namespace NzbDrone.Core.Indexers.Newznab
 {
@@ -19,6 +20,21 @@ namespace NzbDrone.Core.Indexers.Newznab
             return item.Comments().Replace("#comments", "");
         }
 
+        protected override DateTime GetPublishDate(XElement item)
+        {
+            var attributes = item.Elements("attr").ToList();
+            var usenetdateElement = attributes.SingleOrDefault(e => e.Attribute("name").Value.Equals("usenetdate", StringComparison.CurrentCultureIgnoreCase));
+
+            if (usenetdateElement != null)
+            {
+                var dateString = usenetdateElement.Attribute("value").Value;
+
+                return XElementExtensions.ParseDate(dateString);
+            }
+
+            return base.GetPublishDate(item);
+        }
+
         protected override long GetSize(XElement item)
         {
             var attributes = item.Elements("attr").ToList();

src/NzbDrone.Core/Indexers/XElementExtensions.cs

@@ -35,10 +35,8 @@ namespace NzbDrone.Core.Indexers
             return res;
         }
 
-        public static DateTime PublishDate(this XElement item)
+        public static DateTime ParseDate(string dateString)
         {
-            string dateString = item.TryGetValue("pubDate");
-
             try
             {
                 DateTime result;
@@ -56,6 +54,13 @@ namespace NzbDrone.Core.Indexers
             }
         }
 
+        public static DateTime PublishDate(this XElement item)
+        {
+            string dateString = item.TryGetValue("pubDate");
+
+            return ParseDate(dateString);
+        }
+
         public static List<String> Links(this XElement item)
         {
             var elements = item.Elements("link");

src/NzbDrone.Core/MediaFiles/EpisodeImport/Specifications/NotUnpackingSpecification.cs

@@ -34,19 +34,25 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Specifications
 
             foreach (var workingFolder in _configService.DownloadClientWorkingFolders.Split('|'))
             {
-                if (Directory.GetParent(localEpisode.Path).Name.StartsWith(workingFolder))
+                DirectoryInfo parent = Directory.GetParent(localEpisode.Path);
+                while (parent != null)
                 {
-                    if (OsInfo.IsMono)
+                    if (parent.Name.StartsWith(workingFolder))
                     {
-                        _logger.Debug("{0} is still being unpacked", localEpisode.Path);
-                        return false;
-                    }
+                        if (OsInfo.IsMono)
+                        {
+                            _logger.Debug("{0} is still being unpacked", localEpisode.Path);
+                            return false;
+                        }
 
-                    if (_diskProvider.FileGetLastWriteUtc(localEpisode.Path) > DateTime.UtcNow.AddMinutes(-5))
-                    {
-                        _logger.Debug("{0} appears to be unpacking still", localEpisode.Path);
-                        return false;
+                        if (_diskProvider.FileGetLastWriteUtc(localEpisode.Path) > DateTime.UtcNow.AddMinutes(-5))
+                        {
+                            _logger.Debug("{0} appears to be unpacking still", localEpisode.Path);
+                            return false;
+                        }
                     }
+
+                    parent = parent.Parent;
                 }
             }
 

src/NzbDrone.Core/MetadataSource/TraktProxy.cs

@@ -20,7 +20,7 @@ namespace NzbDrone.Core.MetadataSource
     {
         private readonly Logger _logger;
         private static readonly Regex CollapseSpaceRegex = new Regex(@"\s+", RegexOptions.Compiled);
-        private static readonly Regex InvalidSearchCharRegex = new Regex(@"(?:\*|\(|\)|'|!|@)", RegexOptions.Compiled);
+        private static readonly Regex InvalidSearchCharRegex = new Regex(@"(?:\*|\(|\)|'|!|@|\+)", RegexOptions.Compiled);
 
         public TraktProxy(Logger logger)
         {
@@ -31,11 +31,43 @@ namespace NzbDrone.Core.MetadataSource
         {
             try
             {
-                var client = BuildClient("search", "shows");
-                var restRequest = new RestRequest(GetSearchTerm(title) + "/30/seasons");
-                var response = client.ExecuteAndValidate<List<Show>>(restRequest);
+                if (title.StartsWith("tvdb:") || title.StartsWith("tvdbid:") || title.StartsWith("slug:"))
+                {
+                    try
+                    {
+                        var slug = title.Split(':')[1];
+
+                        if (slug.IsNullOrWhiteSpace() || slug.Any(char.IsWhiteSpace))
+                        {
+                            return new List<Series>();
+                        }
+
+                        var client = BuildClient("show", "summary");
+                        var restRequest = new RestRequest(GetSearchTerm(slug) + "/extended");
+                        var response = client.ExecuteAndValidate<Show>(restRequest);
+
+                        return new List<Series> { MapSeries(response) };
+                    }
+                    catch (RestException ex)
+                    {
+                        if (ex.Response.StatusCode == HttpStatusCode.NotFound)
+                        {
+                            return new List<Series>();
+                        }
+
+                        throw;
+                    }
+                }
+                else
+                {
+                    var client = BuildClient("search", "shows");
+                    var restRequest = new RestRequest(GetSearchTerm(title) + "/30/seasons");
+                    var response = client.ExecuteAndValidate<List<Show>>(restRequest);
 
-                return response.Select(MapSeries).ToList();
+                    return response.Select(MapSeries)
+                        .OrderBy(v => title.LevenshteinDistanceClean(v.Title))
+                        .ToList();
+                }
             }
             catch (WebException ex)
             {
@@ -170,7 +202,6 @@ namespace NzbDrone.Core.MetadataSource
             phrase = CollapseSpaceRegex.Replace(phrase, " ").Trim().ToLower();
             phrase = phrase.Trim('-');
             phrase = HttpUtility.UrlEncode(phrase);
-            
 
             return phrase;
         }