@Autowired
    private AuthenticationManager authenticationManager;

    @ResponseBody
    @RequestMapping(value = "/auth", method = RequestMethod.POST)
    public Map auth(@RequestBody Map<String, String> params, HttpServletRequest request) {

        String username = params.get("username");
        String password = params.get("password");

        UsernamePasswordAuthenticationToken token = new UsernamePasswordAuthenticationToken(username, password);

        Authentication authenticate = authenticationManager.authenticate(token);


        Map<String, String> result = new HashMap<>();

        QuicktechUserDetails principal = (QuicktechUserDetails) authenticate.getPrincipal();
        SecurityContextHolder.getContext().setAuthentication(authenticate);

        User user = principal.getUser();

        result.put("username", principal.getUsername());
        result.put("firstname", user.getFirstName());
        result.put("lastname", user.getLastName());
        result.put("id", user.getId());

        return result;
    }