/**
 * Copyright 2018-2020 stylefeng & fengshuonan (https://gitee.com/stylefeng)
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cn.stylefeng.guns.base.pojo.page;

import cn.stylefeng.roses.core.util.HttpContext;
import cn.stylefeng.roses.core.util.ToolUtil;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;

import javax.servlet.http.HttpServletRequest;

/**
 * Layui Table默认的分页参数创建
 *
 * @author fengshuonan
 * @date 2017-04-05 22:25
 */
public class LayuiPageFactory {

    /**
     * 获取layui table的分页参数
     *
     * @author fengshuonan
     * @Date 2019/1/25 22:13
     */
    public static Page defaultPage() {
        HttpServletRequest request = HttpContext.getRequest();

        int limit = 20;
        int page = 1;

        //每页多少条数据
        String limitString = request.getParameter("limit");
        if (ToolUtil.isNotEmpty(limitString)) {
            limit = Integer.parseInt(limitString);
        }

        //第几页
        String pageString = request.getParameter("page");
        if (ToolUtil.isNotEmpty(pageString)) {
            page = Integer.parseInt(pageString);
        }

        return new Page(page, limit);
    }

    /**
     * 创建layui能识别的分页响应参数
     *
     * @author fengshuonan
     * @Date 2019/1/25 22:14
     */
    public static LayuiPageInfo createPageInfo(IPage page) {
        LayuiPageInfo result = new LayuiPageInfo();
        result.setCount(page.getTotal());
        result.setData(page.getRecords());
        return result;
    }
}