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package com.intters.mybatis.support;

import cn.hutool.core.util.ObjectUtil;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.intters.util.StrUtil;
import org.springframework.beans.BeanUtils;

import java.util.Map;

/**
 * 分页工具
 *
 * @author Ruison
 * @date 2019/4/6.
 */
public class Condition {

    /**
     * 转化成mybatis plus中的Page
     *
     * @param query 查询条件
     * @return {@link IPage}
     */
    public static  IPage getPage(Query query) {
        Page page = new Page<>(query.getCurrent(), query.getSize());
        page.setAsc(StrUtil.toStrArray(SqlKeyword.filter(query.getAscs())));
        page.setDesc(StrUtil.toStrArray(SqlKeyword.filter(query.getDescs())));
        return page;
    }

    /**
     * 获取mybatis plus中的QueryWrapper
     *
     * @param entity 实体
     * @param     泛型
     * @return {@link QueryWrapper}
     */
    public static  QueryWrapper getQueryWrapper(T entity) {
        return new QueryWrapper<>(entity);
    }

    /**
     * 获取mybatis plus中的QueryWrapper
     *
     * @param query 查询条件
     * @param clazz 类
     * @param    泛型
     * @return {@link QueryWrapper}
     */
    public static  QueryWrapper getQueryWrapper(Map query, Class clazz) {
        QueryWrapper qw = new QueryWrapper<>();
        if (ObjectUtil.isNotEmpty(query)) {
            query.remove("current");
            query.remove("size");
            qw.setEntity(BeanUtils.instantiateClass(clazz));
            SqlKeyword.buildCondition(query, qw, clazz);
            query.clear();
        }
        return qw;
    }
}