Rebuild playouts with modified collections (#39)

* rebuild playouts when items are removed from collections

* rebuild playouts when items are added to collections

* simplify logic

ErsatzTV.Core/Interfaces/Repositories/IMediaCollectionRepository.cs

@@ -8,13 +8,14 @@ namespace ErsatzTV.Core.Interfaces.Repositories
     public interface IMediaCollectionRepository
     {
         Task<Collection> Add(Collection collection);
-        Task<Unit> AddMediaItem(int collectionId, int mediaItemId);
+        Task<bool> AddMediaItem(int collectionId, int mediaItemId);
         Task<Option<Collection>> Get(int id);
         Task<Option<Collection>> GetCollectionWithItems(int id);
         Task<Option<Collection>> GetCollectionWithItemsUntracked(int id);
         Task<List<Collection>> GetAll();
         Task<Option<List<MediaItem>>> GetItems(int id);
-        Task Update(Collection collection);
+        Task<bool> Update(Collection collection);
         Task Delete(int collectionId);
+        Task<List<int>> PlayoutIdsUsingCollection(int collectionId);
     }
 }

ErsatzTV.Core/Iptv/ChannelGuide.cs

@@ -62,15 +62,18 @@ namespace ErsatzTV.Core.Iptv
 
                     string title = playoutItem.MediaItem switch
                     {
-                        Movie m => m.MovieMetadata.HeadOrNone().Map(mm => mm.Title ?? string.Empty).IfNone("[unknown movie]"),
-                        Episode e => e.EpisodeMetadata.HeadOrNone().Map(em => em.Title ?? string.Empty).IfNone("[unknown episode]"),
+                        Movie m => m.MovieMetadata.HeadOrNone().Map(mm => mm.Title ?? string.Empty)
+                            .IfNone("[unknown movie]"),
+                        Episode e => e.EpisodeMetadata.HeadOrNone().Map(em => em.Title ?? string.Empty)
+                            .IfNone("[unknown episode]"),
                         _ => "[unknown]"
                     };
 
                     string description = playoutItem.MediaItem switch
                     {
                         Movie m => m.MovieMetadata.HeadOrNone().Map(mm => mm.Plot ?? string.Empty).IfNone(string.Empty),
-                        Episode e => e.EpisodeMetadata.HeadOrNone().Map(em => em.Plot ?? string.Empty).IfNone(string.Empty),
+                        Episode e => e.EpisodeMetadata.HeadOrNone().Map(em => em.Plot ?? string.Empty)
+                            .IfNone(string.Empty),
                         _ => string.Empty
                     };
 
@@ -108,7 +111,7 @@ namespace ErsatzTV.Core.Iptv
                             xml.WriteAttributeString("system", "onscreen");
                             xml.WriteString($"S{s:00}E{e:00}");
                             xml.WriteEndElement(); // episode-num
-                            
+
                             xml.WriteStartElement("episode-num");
                             xml.WriteAttributeString("system", "xmltv_ns");
                             xml.WriteString($"{s - 1}.{e - 1}.0/1");

ErsatzTV.Core/Metadata/FallbackMetadataProvider.cs

@@ -34,7 +34,7 @@ namespace ErsatzTV.Core.Metadata
 
             return fileName != null ? GetMovieMetadata(fileName, metadata) : metadata;
         }
-        
+
         public string GetSortTitle(string title)
         {
             if (string.IsNullOrWhiteSpace(title))