package com.ruoyi.article.handler;

import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import com.ruoyi.common.security.utils.SecurityUtils;
import java.time.LocalDateTime;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;

/**
 * 自动填充处理类
 *
 * @author mitao
 * @date 2024-05-16
 */
@Slf4j
@Component
public class MyMetaObjectHandler implements MetaObjectHandler {

    @Override
    public void insertFill(MetaObject metaObject) {
        // 获取当前登录用户
        Long userId = SecurityUtils.getUserId();
        fillValue("createBy", userId.toString(), metaObject);
        fillValue("createTime", LocalDateTime.now(), metaObject);
    }

    @Override
    public void updateFill(MetaObject metaObject) {
        // 获取当前登录用户
        Long userId = SecurityUtils.getUserId();
        fillValue("updateBy", userId.toString(), metaObject);
        fillValue("updateTime", LocalDateTime.now(), metaObject);
    }

    private void fillValue(String fieldName, Object data, MetaObject metaObject) {
        if (metaObject.hasSetter(fieldName)) {
            // 值为空时设置默认值
            Object sidObj = getFieldValByName(fieldName, metaObject);
            if (sidObj == null || "updateBy".equals(fieldName) || "updateTime".equals(fieldName)) {
                setFieldValByName(fieldName, data, metaObject);
            }
        }
    }
}