package com.ld.igds.data;

import com.baomidou.mybatisplus.plugins.Page;

import java.io.Serializable;
import java.util.Collection;
import java.util.List;

/**
 * 对Page<E>结果进行包装
 * 
 * 之所以进行封装是因为LayUI中不管分页与否获取数据，都需要一个完整的格式返回。 LAYUI中要求查询数据必须封装为： {
 * code:0,msg:"",count:1000,data:[] }
 * 
 *
 */
public class LayPage<T> implements Serializable {

	private static final long serialVersionUID = 1L;
	// 当前页
	private int curr;
	// 每页的数量
	private int limit;
	// 总记录数
	private long count;
	// 总页数
	private int pages;
	// 结果集
	private List<T> data;
	// 是否为第一页
	private boolean isFirstPage = false;
	// 是否为最后一页
	private boolean isLastPage = false;

	// LayUI中的必须返回的结果编码 0表示成功。
	private int code = 0;
	// LayUI中异常信息。
	private String msg;

	public LayPage() {
		super();
		this.count = 0;
		this.curr = 1;
		this.code = 0;
		this.msg ="无数据";
	}

	/**
	 * 包装Page对象
	 *
	 * @param list
	 */
	public LayPage(List<T> list) {
		super();
		if (null == list || list.isEmpty()) {
			this.count = 0;
			this.curr = 1;
			this.code = 0;
			this.msg ="无数据";
		}
		if (list instanceof Collection) {
			this.curr = 1;
			this.limit = list.size();

			this.pages = 1;
			this.data = list;
			this.count = list.size();
		}
		if (list instanceof Collection) {
			// 判断页面边界
			judgePageBoudary();
		}
	}

	public LayPage(Page<T> page) {
		this.curr = page.getCurrent();
		this.limit = page.getSize();

		this.pages = (int)page.getPages();
		this.data = (List<T>) page.getRecords();
		this.count = page.getTotal();
	}

	/**
	 * 判定页面边界
	 */
	private void judgePageBoudary() {
		isFirstPage = curr == 1;
		isLastPage = curr == pages;
	}

	public int getPageNum() {
		return curr;
	}

	public void setPageNum(int pageNum) {
		this.curr = pageNum;
	}

	public int getLimit() {
		return limit;
	}

	public void setLimit(int limit) {
		this.limit = limit;
	}

	public long getCount() {
		return count;
	}

	public void setCount(long count) {
		this.count = count;
	}

	public int getPages() {
		return pages;
	}

	public void setPages(int pages) {
		this.pages = pages;
	}

	public List<T> getData() {
		return data;
	}

	public void setData(List<T> data) {
		this.data = data;
	}

	public boolean isIsFirstPage() {
		return isFirstPage;
	}

	public void setIsFirstPage(boolean isFirstPage) {
		this.isFirstPage = isFirstPage;
	}

	public boolean isIsLastPage() {
		return isLastPage;
	}

	public void setIsLastPage(boolean isLastPage) {
		this.isLastPage = isLastPage;
	}

	@Override
	public String toString() {
		final StringBuffer sb = new StringBuffer("PageInfo{");
		sb.append("curr=").append(curr);
		sb.append(", limit=").append(limit);
		sb.append(", count=").append(count);
		sb.append(", pages=").append(pages);
		sb.append(", data=").append(data);
		sb.append(", isFirstPage=").append(isFirstPage);
		sb.append(", isLastPage=").append(isLastPage);
		sb.append(", navigatepageNums=");
		sb.append('}');
		return sb.toString();
	}

	public int getCode() {
		return code;
	}

	public void setCode(int code) {
		this.code = code;
	}

	public String getMsg() {
		return msg;
	}

	public void setMsg(String msg) {
		this.msg = msg;
	}

}