package cn.hobbystocks.auc.common.utils;

import cn.hobbystocks.auc.common.core.domain.BaseEntity;
import cn.hobbystocks.auc.common.utils.sql.SqlUtil;
import com.github.pagehelper.PageHelper;

import java.util.Objects;

/**
 * 分页工具类
 *
 * @author ruoyi
 */
public class PageUtils extends PageHelper {
	/**
	 * 设置请求分页数据
	 */
	public static void startPage(BaseEntity entity) {
		int pageNum = Objects.isNull(entity.getPageNum()) ? 1 : entity.getPageNum();
		int pageSize = Objects.isNull(entity.getPageSize()) ? 100 : entity.getPageSize();
		Boolean reasonable = Objects.isNull(entity.getReasonable()) ? true : entity.getReasonable();
		String orderBy = SqlUtil.escapeOrderBySql(entity.getOrderBy());
		if (Objects.nonNull(orderBy)) {
			PageHelper.startPage(pageNum, pageSize, orderBy).setReasonable(reasonable);
		}else {
			PageHelper.startPage(pageNum, pageSize).setReasonable(reasonable);
		}
	}

	/**
	 * 清理分页的线程变量
	 */
	public static void clearPage() {
		PageHelper.clearPage();
	}
}