ErsatzTV/ErsatzTV.Application/Jellyfin/Commands/SynchronizeJellyfinMediaSourcesHandler.cs

using System.Collections.Generic;
using System.Threading;
using System.Threading.Channels;
using System.Threading.Tasks;
using ErsatzTV.Core;
using ErsatzTV.Core.Domain;
using ErsatzTV.Core.Interfaces.Repositories;
using LanguageExt;
using MediatR;

namespace ErsatzTV.Application.Jellyfin.Commands
{
    public class SynchronizeJellyfinMediaSourcesHandler : IRequestHandler<SynchronizeJellyfinMediaSources,
        Either<BaseError, List<JellyfinMediaSource>>>
    {
        private readonly ChannelWriter<IJellyfinBackgroundServiceRequest> _channel;
        private readonly IMediaSourceRepository _mediaSourceRepository;

        public SynchronizeJellyfinMediaSourcesHandler(
            IMediaSourceRepository mediaSourceRepository,
            ChannelWriter<IJellyfinBackgroundServiceRequest> channel)
        {
            _mediaSourceRepository = mediaSourceRepository;
            _channel = channel;
        }

        public async Task<Either<BaseError, List<JellyfinMediaSource>>> Handle(
            SynchronizeJellyfinMediaSources request,
            CancellationToken cancellationToken)
        {
            List<JellyfinMediaSource> mediaSources = await _mediaSourceRepository.GetAllJellyfin();
            foreach (JellyfinMediaSource mediaSource in mediaSources)
            {
                await _channel.WriteAsync(new SynchronizeJellyfinAdminUserId(mediaSource.Id), cancellationToken);
                await _channel.WriteAsync(new SynchronizeJellyfinLibraries(mediaSource.Id), cancellationToken);
            }

            return mediaSources;
        }
    }
}