yl-backend/src/main/java/com/guwan/backend/security/UserDetailsServiceImpl.java

package com.guwan.backend.security;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.guwan.backend.entity.User;
import com.guwan.backend.mapper.UserMapper;
import lombok.RequiredArgsConstructor;
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 java.util.ArrayList;
import java.util.List;

@Service
@RequiredArgsConstructor
public class UserDetailsServiceImpl implements UserDetailsService {

    private final UserMapper userMapper;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        User user = userMapper.selectOne(
            new LambdaQueryWrapper<User>()
                .eq(User::getUsername, username)
        );
        
        if (user == null) {
            throw new UsernameNotFoundException("用户不存在");
        }
        
        if (user.getStatus() != 1) {
            throw new UsernameNotFoundException("账号已被禁用");
        }

        List<SimpleGrantedAuthority> authorities = new ArrayList<>();
        authorities.add(new SimpleGrantedAuthority("ROLE_USER"));
        
        return new CustomUserDetails(
                user.getId(),
                user.getUsername(),
                user.getPassword(),
                authorities,
                user.getStatus() == 1
        );
    }

    public UserDetails loadUserById(Long userId) throws UsernameNotFoundException {
        User user = userMapper.selectById(userId);
        if (user == null) {
            throw new UsernameNotFoundException("用户不存在");
        }

        List<SimpleGrantedAuthority> authorities = new ArrayList<>();
        authorities.add(new SimpleGrantedAuthority("ROLE_USER"));

        return new CustomUserDetails(
                user.getId(),
                user.getUsername(),
                user.getPassword(),
                authorities,
                user.getStatus() == 1
        );
    }
}