Stream custom live channels using your own media
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 

42 lines
1.7 KiB

using System.Threading;
using System.Threading.Tasks;
using ErsatzTV.Core;
using ErsatzTV.Core.Domain;
using ErsatzTV.Infrastructure.Data;
using ErsatzTV.Infrastructure.Extensions;
using LanguageExt;
using Microsoft.EntityFrameworkCore;
namespace ErsatzTV.Application.MediaCollections.Commands
{
public class DeleteSmartCollectionHandler : MediatR.IRequestHandler<DeleteSmartCollection, Either<BaseError, Unit>>
{
private readonly IDbContextFactory<TvContext> _dbContextFactory;
public DeleteSmartCollectionHandler(IDbContextFactory<TvContext> dbContextFactory) =>
_dbContextFactory = dbContextFactory;
public async Task<Either<BaseError, Unit>> Handle(
DeleteSmartCollection request,
CancellationToken cancellationToken)
{
await using TvContext dbContext = _dbContextFactory.CreateDbContext();
Validation<BaseError, SmartCollection> validation = await SmartCollectionMustExist(dbContext, request);
return await validation.Apply(c => DoDeletion(dbContext, c));
}
private static Task<Unit> DoDeletion(TvContext dbContext, SmartCollection smartCollection)
{
dbContext.SmartCollections.Remove(smartCollection);
return dbContext.SaveChangesAsync().ToUnit();
}
private static Task<Validation<BaseError, SmartCollection>> SmartCollectionMustExist(
TvContext dbContext,
DeleteSmartCollection request) =>
dbContext.SmartCollections
.SelectOneAsync(c => c.Id, c => c.Id == request.SmartCollectionId)
.Map(o => o.ToValidation<BaseError>($"SmartCollection {request.SmartCollectionId} does not exist."));
}
}