custom collection playback order (#64)

* add custom index to collection items

* add custom collection order to ui

* cleanup

ErsatzTV.Application/MediaCards/CollectionCardResultsViewModel.cs

@@ -7,5 +7,8 @@ namespace ErsatzTV.Application.MediaCards
         List<MovieCardViewModel> MovieCards,
         List<TelevisionShowCardViewModel> ShowCards,
         List<TelevisionSeasonCardViewModel> SeasonCards,
-        List<TelevisionEpisodeCardViewModel> EpisodeCards);
+        List<TelevisionEpisodeCardViewModel> EpisodeCards)
+    {
+        public bool UseCustomPlaybackOrder { get; set; }
+    }
 }

ErsatzTV.Application/MediaCards/Mapper.cs

@@ -52,11 +52,20 @@ namespace ErsatzTV.Application.MediaCards
             ProjectToViewModel(Collection collection) =>
             new(
                 collection.Name,
-                collection.MediaItems.OfType<Movie>().Map(m => ProjectToViewModel(m.MovieMetadata.Head())).ToList(),
+                collection.MediaItems.OfType<Movie>().Map(
+                    m => ProjectToViewModel(m.MovieMetadata.Head()) with
+                    {
+                        CustomIndex = GetCustomIndex(collection, m.Id)
+                    }).ToList(),
                 collection.MediaItems.OfType<Show>().Map(s => ProjectToViewModel(s.ShowMetadata.Head())).ToList(),
                 collection.MediaItems.OfType<Season>().Map(ProjectToViewModel).ToList(),
                 collection.MediaItems.OfType<Episode>().Map(e => ProjectToViewModel(e.EpisodeMetadata.Head()))
-                    .ToList());
+                    .ToList()) { UseCustomPlaybackOrder = collection.UseCustomPlaybackOrder };
+
+        private static int GetCustomIndex(Collection collection, int mediaItemId) =>
+            Optional(collection.CollectionItems.Find(ci => ci.MediaItemId == mediaItemId))
+                .Map(ci => ci.CustomIndex ?? 0)
+                .IfNone(0);
 
         internal static SearchCardResultsViewModel ProjectToSearchResults(List<MediaItem> items) =>
             new(

ErsatzTV.Application/MediaCards/MediaCardViewModel.cs

@@ -1,4 +1,4 @@
 namespace ErsatzTV.Application.MediaCards
 {
-    public record MediaCardViewModel(string Title, string Subtitle, string SortTitle, string Poster);
+    public record MediaCardViewModel(int MediaItemId, string Title, string Subtitle, string SortTitle, string Poster);
 }

ErsatzTV.Application/MediaCards/MovieCardViewModel.cs

@@ -2,10 +2,12 @@
 {
     public record MovieCardViewModel
         (int MovieId, string Title, string Subtitle, string SortTitle, string Poster) : MediaCardViewModel(
+            MovieId,
             Title,
             Subtitle,
             SortTitle,
             Poster)
     {
+        public int CustomIndex { get; set; }
     }
 }

ErsatzTV.Application/MediaCards/TelevisionEpisodeCardViewModel.cs

@@ -13,6 +13,7 @@ namespace ErsatzTV.Application.MediaCards
         string Title,
         string Plot,
         string Poster) : MediaCardViewModel(
+        EpisodeId,
         Title,
         $"Episode {Episode}",
         $"Episode {Episode}",

ErsatzTV.Application/MediaCards/TelevisionSeasonCardViewModel.cs

@@ -10,6 +10,7 @@
         string SortTitle,
         string Poster,
         string Placeholder) : MediaCardViewModel(
+        TelevisionSeasonId,
         Title,
         Subtitle,
         SortTitle,

ErsatzTV.Application/MediaCards/TelevisionShowCardViewModel.cs

@@ -2,6 +2,7 @@
 {
     public record TelevisionShowCardViewModel
         (int TelevisionShowId, string Title, string Subtitle, string SortTitle, string Poster) : MediaCardViewModel(
+            TelevisionShowId,
             Title,
             Subtitle,
             SortTitle,