package com.adc.da.http;

import org.apache.commons.lang3.StringUtils;

import javax.servlet.http.HttpServletRequest;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class PageInfo<T> {
    private Integer pageNo;
    private Integer pageSize;
    private Long count;
    private Long pageCount;
    private List<T> list;
    private List<Map<String, Object>> title;
    private Map<String, String> ext;
    private String orderBy;

    public PageInfo() {
        this.pageNo = 1;
        this.pageSize = 10;
        this.list = new ArrayList();
        this.title = new ArrayList();
        this.ext = new HashMap();
        this.orderBy = "";
        this.pageSize = 1;
    }

    public PageInfo(HttpServletRequest request) {
        this.pageNo = 1;
        this.pageSize = 10;
        this.list = new ArrayList();
        this.title = new ArrayList();
        this.ext = new HashMap();
        this.orderBy = "";
        String no = request.getParameter("pageNo");
        if (StringUtils.isEmpty(no)) {
            this.setPageNo(1);
        } else if (StringUtils.isNumeric(no)) {
            this.setPageNo(Integer.parseInt(no));
        }

        String size = request.getParameter("pageSize");
        if (StringUtils.isEmpty(size)) {
            this.setPageSize(10);
        }

        if (StringUtils.isNumeric(size)) {
            this.setPageSize(Integer.parseInt(size));
        }

        String orderByParam = request.getParameter("orderBy");
        if (StringUtils.isNotBlank(orderByParam)) {
            this.setOrderBy(orderByParam);
        }

    }

    public PageInfo(Integer pageNo, Integer pageSize) {
        this(pageNo, pageSize, 0L);
    }

    public PageInfo(Integer pageNo, Integer pageSize, Long count) {
        this(pageNo, pageSize, count, new ArrayList());
    }

    public PageInfo(Integer pageNo, Integer pageSize, Long count, List<T> list) {
        this.pageNo = 1;
        this.pageSize = 10;
        this.list = new ArrayList();
        this.title = new ArrayList();
        this.ext = new HashMap();
        this.orderBy = "";
        if (pageNo == null) {
            pageNo = 1;
        }

        if (pageSize == null) {
            pageSize = 10;
        }

        this.setCount(count);
        this.setPageNo(Math.abs(pageNo));
        this.setPageSize(Math.abs(pageSize));
        this.setList(list);
    }

    public Long getCount() {
        return this.count;
    }

    public void setCount(Long count) {
        this.count = count;
        if ((long) this.pageSize >= count) {
            this.pageNo = 1;
        }

    }

    public Integer getPageNo() {
        return this.pageNo;
    }

    public void setPageNo(Integer pageNo) {
        this.pageNo = pageNo;
    }

    public Integer getPageSize() {
        return this.pageSize;
    }

    public void setPageSize(Integer pageSize) {
        this.pageSize = pageSize <= 0 ? 10 : pageSize;
    }

    public List<T> getList() {
        return this.list;
    }

    public PageInfo<T> setList(List<T> list) {
        this.list = list;
        return this;
    }

    public String getOrderBy() {
        return this.orderBy;
    }

    public void setOrderBy(String orderBy) {
        this.orderBy = orderBy;
    }

    public Map<String, String> getExt() {
        return this.ext;
    }

    public void setExt(Map<String, String> ext) {
        this.ext = ext;
    }

    public Long getPageCount() {
        if (this.count % (long) this.pageSize != 0L) {
            this.pageCount = this.count / (long) this.pageSize + 1L;
        } else {
            this.pageCount = this.count / (long) this.pageSize;
        }

        if (this.pageCount < 1L) {
            this.pageCount = 1L;
        }

        return this.pageCount;
    }

    public void setPageCount(Long pageCount) {
        this.pageCount = pageCount;
    }

    public List<Map<String, Object>> getTitle() {
        return this.title;
    }

    public void setTitle(List<Map<String, Object>> title) {
        this.title = title;
    }
}