public IActionResult Authenticate([FromBody] AuthenticateModel model)
        {
            var user = _userService.Authenticate(model.Username, model.Password);

            if (user == null)
            {
                return(BadRequest(new { message = "Username or password is incorrect" }));
            }

            var tokenHandler    = new JwtSecurityTokenHandler();
            var key             = Encoding.ASCII.GetBytes(_appSettings.Secret);
            var tokenDescriptor = new SecurityTokenDescriptor
            {
                Subject = new ClaimsIdentity(new Claim[]
                {
                    new Claim(ClaimTypes.Name, user.Id.ToString())
                }),
                Expires            = DateTime.UtcNow.AddDays(7),
                SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha256Signature)
            };
            var token       = tokenHandler.CreateToken(tokenDescriptor);
            var tokenString = tokenHandler.WriteToken(token);

            // return basic user info and authentication token
            return(Ok(new
            {
                Id = user.Id,
                Username = user.Username,
                FirstName = user.FirstName,
                LastName = user.LastName,
                Token = tokenString
            }));
        }
        public IActionResult Authenticate([FromBody] AuthenticateRequest model)
        {
            var response = _mngService.Authenticate(model);

            if (response == null)
            {
                return(BadRequest(new { message = "Username or password is incorrect, please try again." }));
            }

            return(Ok(response));
        }