ErsatzTV/ErsatzTV.Application/MediaCards/Queries/GetTelevisionSeasonCardsHandler.cs

using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using ErsatzTV.Core.Domain;
using ErsatzTV.Core.Interfaces.Repositories;
using LanguageExt;
using MediatR;
using static ErsatzTV.Application.MediaCards.Mapper;
using static LanguageExt.Prelude;

namespace ErsatzTV.Application.MediaCards.Queries
{
    public class
        GetTelevisionSeasonCardsHandler : IRequestHandler<GetTelevisionSeasonCards,
            TelevisionSeasonCardResultsViewModel>
    {
        private readonly IMediaSourceRepository _mediaSourceRepository;
        private readonly ITelevisionRepository _televisionRepository;

        public GetTelevisionSeasonCardsHandler(
            ITelevisionRepository televisionRepository,
            IMediaSourceRepository mediaSourceRepository)
        {
            _televisionRepository = televisionRepository;
            _mediaSourceRepository = mediaSourceRepository;
        }

        public async Task<TelevisionSeasonCardResultsViewModel> Handle(
            GetTelevisionSeasonCards request,
            CancellationToken cancellationToken)
        {
            int count = await _televisionRepository.GetSeasonCount(request.TelevisionShowId);

            Option<JellyfinMediaSource> maybeJellyfin = await _mediaSourceRepository.GetAllJellyfin()
                .Map(list => list.HeadOrNone());

            Option<EmbyMediaSource> maybeEmby = await _mediaSourceRepository.GetAllEmby()
                .Map(list => list.HeadOrNone());

            List<TelevisionSeasonCardViewModel> results = await _televisionRepository
                .GetPagedSeasons(request.TelevisionShowId, request.PageNumber, request.PageSize)
                .Map(list => list.Map(s => ProjectToViewModel(s, maybeJellyfin, maybeEmby)).ToList());

            return new TelevisionSeasonCardResultsViewModel(count, results, None);
        }
    }
}