public async Task Handle(AddBook message, CancellationToken cancellationToken)
{
await CheckAndAddAuthors(message.Book, message.UserId);
BookEntityHandler.Add(message.Book);
await Mediator.Send(new SaveChanges());
await Mediator.Publish(new BookAdded(message.Book, message.UserId));
}
public async Task Handle(DeleteBook message, CancellationToken cancellationToken)
{
var oldBook = await BookEntityHandler.Get(message.Id);
if (oldBook == null)
{
throw new EntityNotFoundException <Book>(message.Id);
}
BookEntityHandler.Delete(oldBook);
await Mediator.Send(new SaveChanges());
await Mediator.Publish(new BookRemoved(oldBook, message.UserId));
}
public async Task Handle(UpdateBook message, CancellationToken cancellationToken)
{
var oldBook = await BookEntityHandler.Get(message.Book.Id);
if (oldBook == null)
{
throw new EntityNotFoundException <Book>(message.Book);
}
await CheckAndAddAuthors(message.Book, message.UserId);
var newBook = oldBook.Update(message.Book, DateTime.UtcNow);
BookEntityHandler.Update(newBook);
await Mediator.Send(new SaveChanges());
await Mediator.Publish(new BookUpdated(newBook, oldBook, message.UserId));
}
public async Task <Book> Handle(GetBook request, CancellationToken cancellationToken) => await BookEntityHandler.Get(request.Id);
public async Task <IEnumerable <Book> > Handle(GetBooks request, CancellationToken cancellationToken) => await BookEntityHandler.Get();
