public async Task <bool> Handle(RegisterUserCommand request,
CancellationToken cancellationToken)
{
var userName = request.UserName.ToLower();
var existingUser = await _userQueries.FindByNameAsync(userName);
if (existingUser != null)
{
throw new DomainException($"User name '{request.UserName}' already taken, please choose another name.");
}
var user = new Domain.AggregatesModel.UserAggregate.User(userName, request.Email, null, PasswordHasher.HashPassword(userName, request.Password), true, false, request.FirstName, request.LastName, request.Birthday);
await _userRepository.AddAsync(user);
return(await _userRepository.UnitOfWork.SaveEntitiesAsync(cancellationToken));
}