package com.ruoyi.utils.pagehelper;

import java.util.List;
/**
 * @Description: 分页信息类
 * @ClassName: JpaPageInfo
 * @Author: 刘苏义
 * @Date: 2023年07月31日10:42:40
 * @Version: 1.0
 **/
public class JpaPageInfo {
    private int totalPage;
    private int pageSize;
    private int pageNum;
    private int total;
    private boolean isFirstPage;
    private boolean isLastPage;
    private boolean hasPreviousPage;
    private boolean hasNextPage;
    private List<?> list;

    public JpaPageInfo() {

    }

    public JpaPageInfo(List list) {
        this.pageNum = JpaPageHelper.pageNum;
        this.pageSize = JpaPageHelper.pageSize;
        this.doPage(list);
        JpaPageHelper.pageNum = 0;
        JpaPageHelper.pageSize = 0;
    }

    public void doPage(List list) {
        if (this.pageSize == 0) {
            this.pageSize = 10;
        }
        this.total = list.size();

        this.totalPage = list.size() / this.pageSize;
        if (list.size() % this.pageSize != 0) {
            this.totalPage++;
        }
        if (this.pageNum * this.pageSize > list.size()) {
            this.pageNum = this.totalPage;
        }
        if (this.pageNum <= 0) {
            this.pageNum = 1;
        }
        int fromIndex = (pageNum - 1) * this.pageSize;
        int toIndex = pageNum * pageSize;
        this.isFirstPage = fromIndex == 0;
        this.hasPreviousPage = !this.isFirstPage;
        this.isLastPage = toIndex >= list.size();
        if (this.isLastPage) {
            toIndex = list.size();
        }
        this.hasNextPage = !this.isLastPage;

        this.list = list.subList(fromIndex, toIndex);

    }

    public int getTotalPage() {
        return totalPage;
    }

    public void setTotalPage(int totalPage) {
        this.totalPage = totalPage;
    }

    public int getPageSize() {
        return pageSize;
    }

    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }

    public int getPageNum() {
        return pageNum;
    }

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

    public int getTotal() {
        return total;
    }

    public void setTotal(int total) {
        this.total = total;
    }

    public boolean isFirstPage() {
        return isFirstPage;
    }

    public void setFirstPage(boolean firstPage) {
        isFirstPage = firstPage;
    }

    public boolean isLastPage() {
        return isLastPage;
    }

    public void setLastPage(boolean lastPage) {
        isLastPage = lastPage;
    }

    public boolean isHasPreviousPage() {
        return hasPreviousPage;
    }

    public void setHasPreviousPage(boolean hasPreviousPage) {
        this.hasPreviousPage = hasPreviousPage;
    }

    public boolean isHasNextPage() {
        return hasNextPage;
    }

    public void setHasNextPage(boolean hasNextPage) {
        this.hasNextPage = hasNextPage;
    }

    public List<?> getList() {
        return list;
    }

    public void setList(List<?> list) {
        this.list = list;
    }
}