Fixed: Parsing anime dual language titles

closes #3756

src/NzbDrone.Api/Parse/ParseModule.cs

@@ -3,6 +3,7 @@
 using NzbDrone.Common.Extensions;
 using NzbDrone.Core.Parser;
 using Sonarr.Http;
+using Sonarr.Http.REST;
 
 namespace NzbDrone.Api.Parse
 {
@@ -21,6 +22,12 @@ private ParseResource Parse()
         {
             var title = Request.Query.Title.Value as string;
             var path = Request.Query.Path.Value as string;
+
+            if (path.IsNullOrWhiteSpace() && title.IsNullOrWhiteSpace())
+            {
+                throw new BadRequestException("title or path is missing");
+            }
+
             var parsedEpisodeInfo = path.IsNotNullOrWhiteSpace() ? Parser.ParsePath(path) : Parser.ParseTitle(title);
 
             if (parsedEpisodeInfo == null)

src/NzbDrone.Core.Test/ParserTests/ParsingServiceTests/GetSeriesFixture.cs

@@ -1,5 +1,7 @@
-using Moq;
+using FluentAssertions;
+using Moq;
 using NUnit.Framework;
+using NzbDrone.Core.DataAugmentation.Scene;
 using NzbDrone.Core.Parser;
 using NzbDrone.Core.Test.Framework;
 using NzbDrone.Core.Tv;
@@ -43,5 +45,18 @@ public void should_fallback_to_title_without_year_and_year_when_title_lookup_fai
                   .Verify(s => s.FindByTitle(parsedEpisodeInfo.SeriesTitleInfo.TitleWithoutYear,
                                              parsedEpisodeInfo.SeriesTitleInfo.Year), Times.Once());
         }
+
+        [Test]
+        public void should_parse_concatenated_title()
+        {
+            var series = new Series { TvdbId = 100 };
+            Mocker.GetMock<ISeriesService>().Setup(v => v.FindByTitle("Welcome")).Returns(series);
+            Mocker.GetMock<ISceneMappingService>().Setup(v => v.FindTvdbId("Mairimashita", It.IsAny<string>())).Returns(100);
+
+            var result = Subject.GetSeries("Welcome (Mairimashita).S01E01.720p.WEB-DL-Viva");
+
+            result.Should().NotBeNull();
+            result.TvdbId.Should().Be(100);
+        }
     }
 }

src/NzbDrone.Core/Parser/Model/SeriesTitleInfo.cs

@@ -5,5 +5,6 @@ public class SeriesTitleInfo
         public string Title { get; set; }
         public string TitleWithoutYear { get; set; }
         public int Year { get; set; }
+        public string[] AllTitles { get; set; }
     }
 }

src/NzbDrone.Core/Parser/Parser.cs

@@ -385,6 +385,9 @@ public static class Parser
         private static readonly Regex YearInTitleRegex = new Regex(@"^(?<title>.+?)(?:\W|_)?(?<year>\d{4})",
                                                                 RegexOptions.IgnoreCase | RegexOptions.Compiled);
 
+        private static readonly Regex TitleComponentsRegex = new Regex(@"^(?<title>.+?) \((?<title>.+?)\)$",
+                                                                RegexOptions.IgnoreCase | RegexOptions.Compiled);
+
         private static readonly Regex WordDelimiterRegex = new Regex(@"(\s|\.|,|_|-|=|\|)+", RegexOptions.Compiled);
         private static readonly Regex PunctuationRegex = new Regex(@"[^\w\s]", RegexOptions.Compiled);
         private static readonly Regex CommonWordRegex = new Regex(@"\b(a|an|the|and|or|of)\b\s?", RegexOptions.IgnoreCase | RegexOptions.Compiled);
@@ -670,13 +673,19 @@ private static SeriesTitleInfo GetSeriesTitleInfo(string title)
             {
                 seriesTitleInfo.TitleWithoutYear = title;
             }
-
             else
             {
                 seriesTitleInfo.TitleWithoutYear = match.Groups["title"].Value;
                 seriesTitleInfo.Year = Convert.ToInt32(match.Groups["year"].Value);
             }
 
+            var matchComponents = TitleComponentsRegex.Match(seriesTitleInfo.TitleWithoutYear);
+
+            if (matchComponents.Success)
+            {
+                seriesTitleInfo.AllTitles = matchComponents.Groups["title"].Captures.OfType<Capture>().Select(v => v.Value).ToArray();
+            }
+
             return seriesTitleInfo;
         }
 

src/NzbDrone.Core/Parser/ParsingService.cs

@@ -57,6 +57,11 @@ public Series GetSeries(string title)
 
             var series = _seriesService.FindByTitle(parsedEpisodeInfo.SeriesTitle);
 
+            if (series == null && parsedEpisodeInfo.SeriesTitleInfo.AllTitles != null)
+            {
+                series = GetSeriesByAllTitles(parsedEpisodeInfo);
+            }
+
             if (series == null)
             {
                 series = _seriesService.FindByTitle(parsedEpisodeInfo.SeriesTitleInfo.TitleWithoutYear,
@@ -66,6 +71,49 @@ public Series GetSeries(string title)
             return series;
         }
 
+        private Series GetSeriesByAllTitles(ParsedEpisodeInfo parsedEpisodeInfo)
+        {
+            Series foundSeries = null;
+            int? foundTvdbId = null;
+
+            // Match each title individually, they must all resolve to the same tvdbid
+            foreach (var title in parsedEpisodeInfo.SeriesTitleInfo.AllTitles)
+            {
+                var series = _seriesService.FindByTitle(title);
+                var tvdbId = series?.TvdbId;
+
+                if (series == null)
+                {
+                    tvdbId = _sceneMappingService.FindTvdbId(title, parsedEpisodeInfo.ReleaseTitle);
+                }
+
+                if (!tvdbId.HasValue)
+                {
+                    _logger.Trace("Title {0} not matching any series.", title);
+                    return null;
+                }
+
+                if (foundTvdbId.HasValue && tvdbId != foundTvdbId)
+                {
+                    _logger.Trace("Title {0} both matches tvdbid {1} and {2}, no series selected.", parsedEpisodeInfo.SeriesTitle, foundTvdbId, tvdbId);
+                    return null;
+                }
+
+                if (foundSeries == null)
+                {
+                    foundSeries = series;
+                }
+                foundTvdbId = tvdbId;
+            }
+
+            if (foundSeries == null && foundTvdbId.HasValue)
+            {
+                foundSeries = _seriesService.FindByTvdbId(foundTvdbId.Value);
+            }
+
+            return foundSeries;
+        }
+
         public RemoteEpisode Map(ParsedEpisodeInfo parsedEpisodeInfo, int tvdbId, int tvRageId, SearchCriteriaBase searchCriteria = null)
         {
             var remoteEpisode = new RemoteEpisode
@@ -270,6 +318,11 @@ private Series GetSeries(ParsedEpisodeInfo parsedEpisodeInfo, int tvdbId, int tv
 
             series = _seriesService.FindByTitle(parsedEpisodeInfo.SeriesTitle);
 
+            if (series == null && parsedEpisodeInfo.SeriesTitleInfo.AllTitles != null)
+            {
+                series = GetSeriesByAllTitles(parsedEpisodeInfo);
+            }
+
             if (series == null && parsedEpisodeInfo.SeriesTitleInfo.Year > 0)
             {
                 series = _seriesService.FindByTitle(parsedEpisodeInfo.SeriesTitleInfo.TitleWithoutYear, parsedEpisodeInfo.SeriesTitleInfo.Year);

src/Sonarr.Api.V3/Parse/ParseModule.cs

@@ -3,6 +3,7 @@
 using Sonarr.Api.V3.Episodes;
 using Sonarr.Api.V3.Series;
 using Sonarr.Http;
+using Sonarr.Http.REST;
 
 namespace Sonarr.Api.V3.Parse
 {
@@ -21,6 +22,12 @@ private ParseResource Parse()
         {
             var title = Request.Query.Title.Value as string;
             var path = Request.Query.Path.Value as string;
+
+            if (path.IsNullOrWhiteSpace() && title.IsNullOrWhiteSpace())
+            {
+                throw new BadRequestException("title or path is missing");
+            }
+
             var parsedEpisodeInfo = path.IsNotNullOrWhiteSpace() ? Parser.ParsePath(path) : Parser.ParseTitle(title);
 
             if (parsedEpisodeInfo == null)