group music videos by album (#1849)

ErsatzTV.Core/Extensions/StringExtensions.cs

@@ -0,0 +1,23 @@
+namespace ErsatzTV.Core.Extensions;
+
+public static class StringExtensions
+{
+    public static int GetStableHashCode(this string str)
+    {
+        unchecked
+        {
+            int hash1 = 5381;
+            int hash2 = hash1;
+
+            for (int i = 0; i < str.Length && str[i] != '\0'; i += 2)
+            {
+                hash1 = ((hash1 << 5) + hash1) ^ str[i];
+                if (i == str.Length - 1 || str[i + 1] == '\0')
+                    break;
+                hash2 = ((hash2 << 5) + hash2) ^ str[i + 1];
+            }
+
+            return hash1 + (hash2 * 1566083941);
+        }
+    }
+}

ErsatzTV.Core/Scheduling/YamlScheduling/YamlPlayoutMarathonHelper.cs

@@ -1,4 +1,5 @@
 using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Extensions;
 using ErsatzTV.Core.Interfaces.Repositories;
 using ErsatzTV.Core.Interfaces.Scheduling;
 using ErsatzTV.Core.Scheduling.YamlScheduling.Models;
@@ -111,7 +112,14 @@ public class YamlPlayoutMarathonHelper(IMediaCollectionRepository mediaCollectio
         {
             Song s => new GroupKey(
                 ProgramScheduleItemCollectionType.Collection,
-                s.SongMetadata.HeadOrNone().Map(sm => sm.Album.GetHashCode()).IfNone(0),
+                s.SongMetadata.HeadOrNone().Map(sm => sm.Album.GetStableHashCode()).IfNone(0),
+                null,
+                null,
+                null),
+            MusicVideo mv => new GroupKey(
+                ProgramScheduleItemCollectionType.Collection,
+                mv.MusicVideoMetadata.HeadOrNone()
+                    .Map(mvm => $"{mv.ArtistId}-${mvm.Album}".GetStableHashCode()).IfNone(0),
                 null,
                 null,
                 null),

ErsatzTV.Infrastructure/Data/Repositories/MediaCollectionRepository.cs

@@ -1069,6 +1069,7 @@ public class MediaCollectionRepository : IMediaCollectionRepository
             .Include(m => m.Artist)
             .ThenInclude(a => a.ArtistMetadata)
             .Include(m => m.MusicVideoMetadata)
+            .ThenInclude(mvm => mvm.Artists)
             .Include(m => m.MediaVersions)
             .ThenInclude(mv => mv.Chapters)
             .Include(m => m.MediaVersions)