From 5c36776f8805174cb1b3e57a0fcf92f2060fa388 Mon Sep 17 00:00:00 2001
From: Mikal Stordal <mikalstordal@gmail.com>
Date: Fri, 1 Nov 2024 14:47:18 +0100
Subject: [PATCH] fix: add fast paths for 1 and 0 xrefs in playlist for videos

---
 Shoko.Server/Services/GeneratedPlaylistService.cs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Shoko.Server/Services/GeneratedPlaylistService.cs b/Shoko.Server/Services/GeneratedPlaylistService.cs
index 2d99ca4f6..b800e907a 100644
--- a/Shoko.Server/Services/GeneratedPlaylistService.cs
+++ b/Shoko.Server/Services/GeneratedPlaylistService.cs
@@ -353,6 +353,17 @@ public bool TryParsePlaylist(string[] items, out IReadOnlyList<(IReadOnlyList<IS
     private IEnumerable<(IReadOnlyList<IShokoEpisode> episodes, IReadOnlyList<IVideo> videos)> GetListForVideo(IVideo video)
     {
         var crossReferences = video.CrossReferences;
+        if (crossReferences.Count is 0)
+            return [];
+
+        if (crossReferences.Count is 1)
+        {
+            if (crossReferences[0].ShokoEpisode is not { } episode)
+                return [];
+
+            return [([episode], [video])];
+        }
+
         var seriesOrder = crossReferences
             .OrderBy(xref => xref.Order)
             .Select(xref => xref.AnidbAnimeID)