fix updating trakt lists (#1218)

CHANGELOG.md

@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
+### Fixed
+- Fix updating (re-adding) Trakt lists to properly use new metadata ids that were not present when originally added
 
 ## [0.7.6-beta] - 2023-03-24
 ### Added

ErsatzTV.Application/MediaCollections/Commands/AddTraktListHandler.cs

@@ -61,7 +61,7 @@ public class AddTraktListHandler : TraktCommandBase, IRequestHandler<AddTraktLis
 
     private async Task<Either<BaseError, Unit>> DoAdd(Parameters parameters)
     {
-        await using TvContext dbContext = _dbContextFactory.CreateDbContext();
+        await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync();
 
         return await TraktApiClient.GetUserList(parameters.User, parameters.List)
             .BindT(list => SaveList(dbContext, list))

ErsatzTV.Application/MediaCollections/Commands/TraktCommandBase.cs

@@ -87,7 +87,11 @@ public abstract class TraktCommandBase
 
                 foreach (TraktListItem existing in toUpdate)
                 {
-                    Option<TraktListItem> maybeIncoming = list.Items.Find(i => i.TraktId == existing.TraktId);
+                    Option<TraktListItem> maybeIncoming = items
+                        .Filter(i => i.TraktId == existing.TraktId)
+                        .Map(i => ProjectItem(list, i))
+                        .HeadOrNone();
+
                     foreach (TraktListItem incoming in maybeIncoming)
                     {
                         existing.Kind = incoming.Kind;