public async Task <AuthenticationResult> RegisterAsync(string email, string password) { var existingUser = await _userAccess.GetByEmailAsync(email); if (existingUser != null) { return(UserExistsResult()); } var createdUser = await _userAccess.CreateAsync(email, password); if (createdUser == null) { return(null); } var user = new Domain.User { Id = Guid.NewGuid(), Email = email, Password = password }; var token = _jwtAccess.GenerateJwtToken(user); return(AuthenticationSuccessResult(token)); }