35 lines
1.4 KiB
C#
35 lines
1.4 KiB
C#
using System.Threading;
|
|
using System.Threading.Tasks;
|
|
using ErsatzTV.Core;
|
|
using ErsatzTV.Core.Interfaces.Repositories;
|
|
using LanguageExt;
|
|
using MediatR;
|
|
|
|
namespace ErsatzTV.Application.MediaCollections.Commands
|
|
{
|
|
public class
|
|
DeleteSimpleMediaCollectionHandler : IRequestHandler<DeleteSimpleMediaCollection, Either<BaseError, Task>>
|
|
{
|
|
private readonly IMediaCollectionRepository _mediaCollectionRepository;
|
|
|
|
public DeleteSimpleMediaCollectionHandler(IMediaCollectionRepository mediaCollectionRepository) =>
|
|
_mediaCollectionRepository = mediaCollectionRepository;
|
|
|
|
public async Task<Either<BaseError, Task>> Handle(
|
|
DeleteSimpleMediaCollection request,
|
|
CancellationToken cancellationToken) =>
|
|
(await SimpleMediaCollectionMustExist(request))
|
|
.Map(DoDeletion)
|
|
.ToEither<Task>();
|
|
|
|
private Task DoDeletion(int mediaCollectionId) => _mediaCollectionRepository.Delete(mediaCollectionId);
|
|
|
|
private async Task<Validation<BaseError, int>> SimpleMediaCollectionMustExist(
|
|
DeleteSimpleMediaCollection deleteMediaCollection) =>
|
|
(await _mediaCollectionRepository.GetSimpleMediaCollection(deleteMediaCollection.SimpleMediaCollectionId))
|
|
.ToValidation<BaseError>(
|
|
$"SimpleMediaCollection {deleteMediaCollection.SimpleMediaCollectionId} does not exist.")
|
|
.Map(c => c.Id);
|
|
}
|
|
}
|