public class AuthProviderImpl implements AuthenticationProvider {

    @Autowired
    UserRepository userRepository;

    BCryptPasswordEncoder encoder = new BCryptPasswordEncoder();

    @Override
    public Authentication authenticate(Authentication authentication) throws AuthenticationException {
        String login = authentication.getName();

        Users user = userRepository.findByLogin(login);
        if (user == null) {
            System.out.println("user not found");
            throw new UsernameNotFoundException("user not found");

        }
        String password = authentication.getCredentials().toString();
        System.out.println(password);
        if (!encoder.matches(password, user.getPassword()) && !password.equals(user.getPassword())) {
            System.out.println("invalid password");
            throw new BadCredentialsException("invalid password");
        }

        List<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();
        authorities.add(new SimpleGrantedAuthority(user.getRole()));

        return new UsernamePasswordAuthenticationToken(user, null, authorities);
    }

    @Override
    public boolean supports(Class<?> aClass) {
        return aClass.equals(UsernamePasswordAuthenticationToken.class);
    }
}