package com.welampiot.security;

import com.alibaba.fastjson.JSON;
import com.welampiot.common.BaseResult;
import com.welampiot.dto.MenuDTO;
import com.welampiot.dto.UserDTO;
import com.welampiot.service.UserService;
import com.welampiot.vo.MenuVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

@Component
public class CustomizeAuthenticationSuccessHandler implements AuthenticationSuccessHandler {

    @Autowired
    private UserService userService;

    @Override
    public void onAuthenticationSuccess(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Authentication authentication)
            throws IOException, ServletException {
        User userDetails = (User) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
        UserDTO userDTO = userService.getUserByUserName(userDetails.getUsername());
        List<MenuDTO> menuDTOList = userService.queryMenuList(userDTO.getUsername());
        List<MenuVO> voList = new ArrayList<>();
        for(MenuDTO dto:menuDTOList){
            MenuVO vo = new MenuVO();
            BeanUtils.copyProperties(dto,vo);
            voList.add(vo);
        }
        //此处还可以进行一些处理，比如登录成功之后可能需要返回给前台当前用户有哪些菜单权限，
        //进而前台动态的控制菜单的显示等，具体根据自己的业务需求进行扩展

        //返回json数据
        BaseResult result = BaseResult.success(voList);
        //处理编码方式，防止中文乱码的情况
        httpServletResponse.setContentType("text/json;charset=utf-8");
        //塞到HttpServletResponse中返回给前台
        httpServletResponse.getWriter().write(JSON.toJSONString(result));
    }
}