update xmltv channel list on channel edit (#1570)

CHANGELOG.md

@@ -39,6 +39,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Fix crop scale behavior with NVIDIA, QSV acceleration
 - Fix bug that corrupted uploaded images (watermarks, channel logos)
   - Re-uploading images should fix them 
+- Recreate XMLTV channel list (including logos) when channels are edited in ErsatzTV
+  - This bug caused the ErsatzTV logo to be used instead of channel logos in some cases 
 
 ### Changed
 - Upgrade from .NET 7 to .NET 8

ErsatzTV.Application/Channels/Commands/CreateChannelHandler.cs

@@ -1,33 +1,35 @@
 using System.Globalization;
 using System.Text.RegularExpressions;
+using System.Threading.Channels;
 using ErsatzTV.Core;
 using ErsatzTV.Core.Domain;
 using ErsatzTV.Core.Domain.Filler;
 using ErsatzTV.Infrastructure.Data;
 using ErsatzTV.Infrastructure.Extensions;
 using Microsoft.EntityFrameworkCore;
+using Channel = ErsatzTV.Core.Domain.Channel;
 
 namespace ErsatzTV.Application.Channels;
 
-public class CreateChannelHandler : IRequestHandler<CreateChannel, Either<BaseError, CreateChannelResult>>
+public class CreateChannelHandler(
+    ChannelWriter<IBackgroundServiceRequest> workerChannel,
+    IDbContextFactory<TvContext> dbContextFactory)
+    : IRequestHandler<CreateChannel, Either<BaseError, CreateChannelResult>>
 {
-    private readonly IDbContextFactory<TvContext> _dbContextFactory;
-
-    public CreateChannelHandler(IDbContextFactory<TvContext> dbContextFactory) => _dbContextFactory = dbContextFactory;
-
     public async Task<Either<BaseError, CreateChannelResult>> Handle(
         CreateChannel request,
         CancellationToken cancellationToken)
     {
-        await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
+        await using TvContext dbContext = await dbContextFactory.CreateDbContextAsync(cancellationToken);
         Validation<BaseError, Channel> validation = await Validate(dbContext, request);
         return await validation.Apply(c => PersistChannel(dbContext, c));
     }
 
-    private static async Task<CreateChannelResult> PersistChannel(TvContext dbContext, Channel channel)
+    private async Task<CreateChannelResult> PersistChannel(TvContext dbContext, Channel channel)
     {
         await dbContext.Channels.AddAsync(channel);
         await dbContext.SaveChangesAsync();
+        await workerChannel.WriteAsync(new RefreshChannelList());
         return new CreateChannelResult(channel.Id);
     }
 

ErsatzTV.Application/Channels/Commands/UpdateChannelHandler.cs

@@ -12,26 +12,18 @@ using Channel = ErsatzTV.Core.Domain.Channel;
 
 namespace ErsatzTV.Application.Channels;
 
-public class UpdateChannelHandler : IRequestHandler<UpdateChannel, Either<BaseError, ChannelViewModel>>
-{
-    private readonly IDbContextFactory<TvContext> _dbContextFactory;
-    private readonly ChannelWriter<IBackgroundServiceRequest> _workerChannel;
-
-    public UpdateChannelHandler(
+public class UpdateChannelHandler(
     ChannelWriter<IBackgroundServiceRequest> workerChannel,
     IDbContextFactory<TvContext> dbContextFactory)
+    : IRequestHandler<UpdateChannel, Either<BaseError, ChannelViewModel>>
 {
-        _workerChannel = workerChannel;
-        _dbContextFactory = dbContextFactory;
-    }
-
     public async Task<Either<BaseError, ChannelViewModel>> Handle(
         UpdateChannel request,
         CancellationToken cancellationToken)
     {
-        await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
+        await using TvContext dbContext = await dbContextFactory.CreateDbContextAsync(cancellationToken);
         Validation<BaseError, Channel> validation = await Validate(dbContext, request);
-        return await LanguageExtensions.Apply(validation, c => ApplyUpdateRequest(dbContext, c, request));
+        return await validation.Apply(c => ApplyUpdateRequest(dbContext, c, request));
     }
 
     private async Task<ChannelViewModel> ApplyUpdateRequest(TvContext dbContext, Channel c, UpdateChannel update)
@@ -85,10 +77,12 @@ public class UpdateChannelHandler : IRequestHandler<UpdateChannel, Either<BaseEr
 
             foreach (Playout playout in maybePlayout)
             {
-                await _workerChannel.WriteAsync(new ExtractEmbeddedSubtitles(playout.Id));
+                await workerChannel.WriteAsync(new ExtractEmbeddedSubtitles(playout.Id));
             }
         }
         
+        await workerChannel.WriteAsync(new RefreshChannelList());
+
         return ProjectToViewModel(c);
     }