public async Task <User> RegisterUserAsync(string userName, string password)
{
if (string.IsNullOrWhiteSpace(userName))
{
throw new ArgumentException("Value cannot be null or whitespace.", nameof(userName));
}
if (string.IsNullOrWhiteSpace(password))
{
throw new ArgumentException("Value cannot be null or whitespace.", nameof(password));
}
var userExists = await _repository.ExistsAsync(new AccountExistsSpec(AccountType.Internal, userName))
.ConfigureAwait(false);
if (userExists)
{
throw new DomainException(Error.UserNameAlreadyExists, new object[] { userName });
}
return(RegisterUser(userName, password));
}
