package edu.travel.config;

import cn.hutool.core.util.ObjectUtil;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import edu.travel.DateUtil;
import edu.travel.cache.util.RedisKey;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.util.Date;

/**
 * @author 畅
 * 通用字段处理
 */
@Component
public class FieldMetaObjectHandler implements MetaObjectHandler {
    @Autowired
    private StringRedisTemplate stringRedisTemplate;


    private final static String UPDATE_USER_ID = "updateUserId";
    private final static String UPDATE_TIME = "updateTime";
    private final static String CREATE_USER_ID = "createUserId";
    private final static String CREATE_TIME = "createTime";
    private final static String PROJECT = "project";
    private final static String DELETE_FLAG = "deleteFlag";

    @Override
    public void insertFill(MetaObject metaObject) {
        HttpServletRequest request = ((ServletRequestAttributes) (RequestContextHolder.currentRequestAttributes())).getRequest();
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
        Object principal = authentication.getPrincipal();
        if (principal == null) {
            return;
        }
        Long userId = null;
        //时区
        String s =null;
        if (!(principal instanceof String && "anonymousUser".equals(principal))) {
            //走登录用户
            String jsonString = JSON.toJSONString(principal);
            JSONObject jsonObject = JSON.parseObject(jsonString);
            userId = jsonObject.getLong("id");
            s = stringRedisTemplate.opsForValue().get(RedisKey.USER_COUNTRY + userId);
        }

        if (metaObject.hasSetter(CREATE_USER_ID)) {
            this.strictInsertFill(metaObject, CREATE_USER_ID, String.class, userId != null ? userId.toString() : "");
        }
        if (metaObject.hasSetter(CREATE_TIME)) {
            this.strictInsertFill(metaObject, CREATE_TIME, Date.class, ObjectUtil.isEmpty(s)? new Date() : DateUtil.convertServerTimeToUserDateTime(s));
        }
        if (metaObject.hasSetter(PROJECT)) {
            this.strictInsertFill(metaObject, PROJECT, String.class, request.getHeader("project"));
        }
        if (metaObject.hasSetter(DELETE_FLAG)) {
            this.strictInsertFill(metaObject, DELETE_FLAG, Integer.class, 0);
        }
    }

    @Override
    public void updateFill(MetaObject metaObject) {
        Object principal = SecurityContextHolder.getContext().getAuthentication().getPrincipal();
        JSONObject jsonObject = JSON.parseObject(JSON.toJSONString(principal));
        String userId = jsonObject.getLong("id").toString();
        String s = stringRedisTemplate.opsForValue().get(RedisKey.USER_COUNTRY + userId);
        if (metaObject.hasSetter(UPDATE_USER_ID)) {
            this.strictInsertFill(metaObject, UPDATE_USER_ID, String.class, userId);
        }
        if (metaObject.hasSetter(UPDATE_TIME)) {
            this.strictInsertFill(metaObject, UPDATE_TIME, Date.class,ObjectUtil.isEmpty(s)? new Date() : DateUtil.convertServerTimeToUserDateTime(s));
        }
    }
}