package com.supervision.service.impl;

import com.supervision.domain.SysUser;
import com.supervision.service.SysUserService;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.userdetails.User;
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.Collections;
import java.util.List;

@Slf4j
@Service
@RequiredArgsConstructor
public class UserDetailsServiceImpl implements UserDetailsService {

    private final SysUserService sysUserService;


    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {


        // 将查询到的用户信息组装成UserDetails对象
        // **扩展点**：如需加载用户角色权限，可在此处查询 sys_user_role 表关联的角色，并将角色加入 authorities 列表
        List<GrantedAuthority> authorities = Collections.emptyList();
        // 使用Spring Security提供的User对象作为UserDetails返回
        SysUser sysUser = sysUserService.getByUsername(username);
        if (sysUser == null) {
            throw new UsernameNotFoundException("用户不存在: " + username);
        }
        return new User(sysUser.getUserName(), sysUser.getPassword(), authorities);
    }
}