New: Use IMDB ID when searching supported indexers

src/NzbDrone.Core.Test/IndexerTests/NewznabTests/NewznabRequestGeneratorFixture.cs

@@ -28,7 +28,7 @@ namespace NzbDrone.Core.Test.IndexerTests.NewznabTests
 
             _singleEpisodeSearchCriteria = new SingleEpisodeSearchCriteria
             {
-                Series = new Tv.Series { TvRageId = 10, TvdbId = 20, TvMazeId = 30 },
+                Series = new Tv.Series { TvRageId = 10, TvdbId = 20, TvMazeId = 30, ImdbId ="t40" },
                 SceneTitles = new List<string> { "Monkey Island" },
                 SeasonNumber = 1,
                 EpisodeNumber = 2
@@ -189,6 +189,19 @@ namespace NzbDrone.Core.Test.IndexerTests.NewznabTests
             page.Url.Query.Should().Contain("tvmazeid=30");
         }
 
+        [Test]
+        public void should_search_by_imdbid_if_supported()
+        {
+            _capabilities.SupportedTvSearchParameters = new[] { "q", "imdbid", "season", "ep" };
+
+            var results = Subject.GetSearchRequests(_singleEpisodeSearchCriteria);
+            results.GetTier(0).Should().HaveCount(1);
+
+            var page = results.GetAllTiers().First().First();
+
+            page.Url.Query.Should().Contain("imdbid=t40");
+        }
+
         [Test]
         public void should_prefer_search_by_tvdbid_if_rid_supported()
         {

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

@@ -57,6 +57,18 @@ namespace NzbDrone.Core.Indexers.Newznab
                        capabilities.SupportedTvSearchParameters.Contains("ep");
             }
         }
+        private bool SupportsImdbSearch
+        {
+            get
+            {
+                var capabilities = _capabilitiesProvider.GetCapabilities(Settings);
+
+                return capabilities.SupportedTvSearchParameters != null &&
+                       capabilities.SupportedTvSearchParameters.Contains("imdbid") &&
+                       capabilities.SupportedTvSearchParameters.Contains("season") &&
+                       capabilities.SupportedTvSearchParameters.Contains("ep");
+            }
+        }
 
         private bool SupportsTvRageSearch
         {
@@ -198,6 +210,7 @@ namespace NzbDrone.Core.Indexers.Newznab
         private void AddTvIdPageableRequests(IndexerPageableRequestChain chain, int maxPages, IEnumerable<int> categories, SearchCriteriaBase searchCriteria, string parameters)
         {
             var includeTvdbSearch = SupportsTvdbSearch && searchCriteria.Series.TvdbId > 0;
+            var includeImdbSearch = SupportsImdbSearch && searchCriteria.Series.ImdbId.IsNotNullOrWhiteSpace();
             var includeTvRageSearch = SupportsTvRageSearch && searchCriteria.Series.TvRageId > 0;
             var includeTvMazeSearch = SupportsTvMazeSearch && searchCriteria.Series.TvMazeId > 0;
 
@@ -209,6 +222,10 @@ namespace NzbDrone.Core.Indexers.Newznab
                 {
                     ids += "&tvdbid=" + searchCriteria.Series.TvdbId;
                 }
+                if (includeImdbSearch)
+                {
+                    ids += "&imdbid=" + searchCriteria.Series.ImdbId;
+                }
 
                 if (includeTvRageSearch)
                 {
@@ -229,6 +246,11 @@ namespace NzbDrone.Core.Indexers.Newznab
                     chain.Add(GetPagedRequests(maxPages, categories, "tvsearch",
                         string.Format("&tvdbid={0}{1}", searchCriteria.Series.TvdbId, parameters)));
                 }
+                else if (includeImdbSearch)
+                {
+                    chain.Add(GetPagedRequests(maxPages, categories, "tvsearch",
+                        string.Format("&imdbid={0}{1}", searchCriteria.Series.ImdbId, parameters)));
+                }
                 else if (includeTvRageSearch)
                 {
                     chain.Add(GetPagedRequests(maxPages, categories, "tvsearch",