public async Task <Response> Authenticate([FromBody] LoginViewModel userModel) { var user = await _userOperations.AuthenticateAsync(userModel.Username, userModel.Password); if (user == null) { return new Response { ErrorMessage = "Username or password is incorrect", Status = ResponseStatus.Error, } } ; var userToken = GenerateUserToken(user); return(new Response { Result = new UserAuthenticationModel { Id = user.Id, Username = user.Username, FirstName = user.FirstName, LastName = user.LastName, Token = userToken }, Status = ResponseStatus.Ok, }); }