New: Filter episodes in API v3 by episode file ID

Closes #3589

src/NzbDrone.Core.Test/ParserTests/SingleEpisodeParserFixture.cs

@@ -141,6 +141,8 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("Series.Title.S01EP01.English.AC3.DL.1080p.BluRay-Sonarr", "Series Title", 1, 1)]
         [TestCase("tvs-amgo-dd51-dl-7p-azhd-x264-103", "tvs-amgo-dd51-dl-7p-azhd", 1, 3)]
         [TestCase("Series Title - S01E01 [AC3 5.1 Castellano][www.descargas2020.org]", "Series Title", 1, 1)]
+        [TestCase("Peaky Blinders - [01x01] - Episode 1", "Peaky Blinders", 1, 1)]
+        [TestCase("Peaky Blinders - [02x01] - Episode 1", "Peaky Blinders", 2, 1)]
         //[TestCase("", "", 0, 0)]
         public void should_parse_single_episode(string postTitle, string title, int seasonNumber, int episodeNumber)
         {

src/Sonarr.Api.V3/Episodes/EpisodeModule.cs

@@ -28,13 +28,9 @@ namespace Sonarr.Api.V3.Episodes
         {
             var seriesIdQuery = Request.Query.SeriesId;
             var episodeIdsQuery = Request.Query.EpisodeIds;
+            var episodeFileIdQuery = Request.Query.EpisodeFileId;
             var includeImages = Request.GetBooleanQueryParameter("includeImages", false);
 
-            if (!seriesIdQuery.HasValue && !episodeIdsQuery.HasValue)
-            {
-                throw new BadRequestException("seriesId or episodeIds must be provided");
-            }
-
             if (seriesIdQuery.HasValue)
             {
                 int seriesId = Convert.ToInt32(seriesIdQuery.Value);
@@ -47,14 +43,25 @@ namespace Sonarr.Api.V3.Episodes
 
                 return MapToResource(_episodeService.GetEpisodeBySeries(seriesId), false, false, includeImages);
             }
+            else if (episodeIdsQuery.HasValue)
+            {
+                string episodeIdsValue = episodeIdsQuery.Value.ToString();
 
-            string episodeIdsValue = episodeIdsQuery.Value.ToString();
+                var episodeIds = episodeIdsValue.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries)
+                                                .Select(e => Convert.ToInt32(e))
+                                                .ToList();
 
-            var episodeIds = episodeIdsValue.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries)
-                                            .Select(e => Convert.ToInt32(e))
-                                            .ToList();
+                return MapToResource(_episodeService.GetEpisodes(episodeIds), false, false, includeImages);
+            }
+            else if (episodeFileIdQuery.HasValue)
+            {
+                int episodeFileId = Convert.ToInt32(episodeFileIdQuery.Value);
+
+                return MapToResource(_episodeService.GetEpisodesByFileId(episodeFileId), false, false, includeImages);
+
+            }
 
-            return MapToResource(_episodeService.GetEpisodes(episodeIds), false, false, includeImages);
+            throw new BadRequestException("seriesId or episodeIds must be provided");
         }
 
         private object SetEpisodeMonitored(int id)