public Task <Unit> Handle(DeleteCopy request, CancellationToken cancellationToken)
{
var copy = _context.Copies.Single(c => c.Id == request.CopyId);
_context.Remove(copy);
_context.SaveChanges();
return(Unit.Task);
}
private async Task RemoveUnusedAssociations(CancellationToken cancellationToken,
List <TitleGenre> existingAssociations,
List <Guid> associated)
{
var difference = existingAssociations.Where(ea => associated.All(a => ea.GenreId != a));
foreach (var toRemove in difference)
{
_context.Remove(toRemove);
await _context.SaveChangesAsync(cancellationToken);
}
}