package com.example.jz.auth;

import cn.hutool.json.JSONUtil;
import com.example.jz.modle.R;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.web.authentication.logout.LogoutHandler;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

/**
 * @author 安瑾然
 * @data 2022/7/18 - 10:45 AM
 * @description 登出
 */
@Component
public class MyLogoutHandler implements LogoutHandler {

    private TokenJwtManager tokenJwtManager;

    @Autowired
    public void setTokenJwtManager(TokenJwtManager tokenJwtManager) {
        this.tokenJwtManager = tokenJwtManager;
    }

    @Override
    public void logout(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Authentication authentication) {
        // 从header中获取token
        String token = httpServletRequest.getHeader("token");
        String username = tokenJwtManager.getUserName(token);
        // 设置返回消息类型
        httpServletResponse.setHeader("Content-type", "text/html;charset=UTF-8");
        httpServletResponse.setCharacterEncoding("utf-8");
        httpServletResponse.setContentType("application/json;charset=UTF-8");
        // 返回给请求端
        PrintWriter writer = null;
        try {
            writer = httpServletResponse.getWriter();
            writer.write(JSONUtil.toJsonStr(R.ok(null, username + "登出成功")));
            writer.flush();
            writer.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}