using Microsoft.AspNetCore.DataProtection.KeyManagement;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;

namespace DW5S.DTO
{
    /// <summary>
    /// 分页查询参数
    /// </summary>
    public  class PageQueryDto
    {
        /// <summary>
        /// 页数(从1开始)
        /// </summary>
        public int Page { get; set; }

        /// <summary>
        /// 每页显示条数
        /// </summary>
        public int CountPerPage { get; set; }
    }

    /// <summary>
    /// 分页查询结果
    /// </summary>
    public  class PageData
    {
        /// <summary>
        /// 记录总条数
        /// </summary>
        public long TotalCount { get; set; }

        /// <summary>
        /// 每页显示条数
        /// </summary>
        public int CountPerPage { get; set; }

        /// <summary>
        /// 总页数
        /// </summary>
        public int TotalPage => (int)(TotalCount / CountPerPage) + (TotalCount % CountPerPage == 0 ? 0 : 1);

        /// <summary>
        /// 当前页数(从1开始)
        /// </summary>
        public int Page { get; set; }
    }

    /// <summary>
    /// 分页查询结果
    /// </summary>
    public class PageData<TEntity>:PageData
    {

        /// <summary>
        /// 当前页数据
        /// </summary>
        public IEnumerable<TEntity> Data { get; set; }
    }
}