public async Task CreateNewAccountAsync(User user)
{
if (user == null)
{
throw new ArgumentNullException(nameof(user));
}
var userEmailAlreadyExist = await userSQLService.CheckIfUserEmailExists(user.Email);
if (userEmailAlreadyExist)
{
throw new Exception(); //create new exception
}
user.Password = HashUserPassword(user.Password);
await userSQLService.CreateNewUserAccountAsync(user);
}