using JSMachine.WMS.Domain.IRepository;
using System.Collections.Generic;

namespace JSMachine.WMS.App.Dto
{
    public class PagedResultDto<T>
    {
        public static readonly PagedResultDto<T> EmptyPagedResult = new PagedResultDto<T>(0, 0, 0, 0, null);

        #region Public Properties
        /// <summary>
        /// 总记录数
        /// </summary>
        public int TotalRecords { get; set; }

        /// <summary>
        /// 总页数
        /// </summary>
        public int TotalPages { get; set; }

        /// <summary>
        /// 每页的记录数
        /// </summary>
        public int PageSize { get; set; }

        /// <summary>
        /// 当前页码
        /// </summary>
        public int PageNumber { get; set; }

        /// <summary>
        /// 获取或设置当前页码的记录
        /// </summary>
        public List<T> PageData { get; set; }

        #endregion


        public PagedResultDto()
        {
            this.PageData = new List<T>();
        }

        public PagedResultDto(int totalRecords, int totalPages, int pageSize, int pageNumber, List<T> data)
        {
            this.TotalPages = totalPages;
            this.TotalRecords = totalRecords;
            this.PageSize = pageSize;
            this.PageNumber = pageNumber;
            this.PageData = data;
        }

        public PagedResultDto(int totalRecords, int pageSize, int pageNumber, List<T> data)
        {
            if (pageSize > 0)
            {
                this.TotalPages = totalRecords % pageSize == 0 ? totalRecords / pageSize : totalRecords / pageSize + 1;
            }

            this.TotalRecords = totalRecords;
            this.PageSize = pageSize;
            this.PageNumber = pageNumber;
            this.PageData = data;
        }
    }
}