package samuelb.capripol.Services;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import samuelb.capripol.Role;
import samuelb.capripol.User;
import samuelb.capripol.Repositories.UserRepository;

import java.util.HashSet;
import java.util.Set;

@Service
public class UserDetailsServiceImpl implements UserDetailsService{

    private static Logger logger = LoggerFactory.getLogger(UserDetailsServiceImpl.class);

    @Autowired
    private UserRepository userRepository;

    @Override
    @Transactional(readOnly = true)
    public UserDetails loadUserByUsername(String username) {
        User user = userRepository.findByUserName(username);
        if (user == null) throw new UsernameNotFoundException(username);
        Set<GrantedAuthority> grantedAuthorities = new HashSet<>();
        for (Role role : user.getSystemRoles()){
            grantedAuthorities.add(new SimpleGrantedAuthority(role.getName()));
        }
        return new org.springframework.security.core.userdetails.User(user.getUsername(), user.getPassword(), grantedAuthorities);
    }
}