using Business.Domain;
using Business.EntityFrameworkCore.SqlRepositories;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Volo.Abp.Application.Services;

namespace Business.DOP
{
    public class HolidayHelper : ApplicationService
    {
        /// <summary>
        /// 节假日记录表
        /// </summary>
        private ISqlRepository<HolidayMaster> _holidayMaster;

        public HolidayHelper(ISqlRepository<HolidayMaster> holidayMaster) {
            _holidayMaster = holidayMaster;
        }

        /// <summary>
        /// 向前推进num个工作日，去掉节假日
        /// </summary>
        /// <param name="toTime"></param>
        /// <param name="day"></param>
        /// <returns></returns>
        public DateTime GetWorkDateByWorkCalendar(DateTime toTime, int num, List<HolidayMaster> holidayList)
        {
            DateTime newTime = toTime.AddDays(-num);
            //向前推进时间
            //1.首先读取时间所处年份的节假日配置
            
            return ForwardDay(newTime, holidayList);
        }

        private DateTime ForwardDay(DateTime toTime, List<HolidayMaster> holidayList)
        {
            //2.判断当前月-日是否在补班日期中。
            if (holidayList.Where(x => x.Dated.GetValueOrDefault().Date == toTime.Date && x.Ufld1 == "调班").Any())
            {
                return toTime;
            }
            //3.判断当前日期是否在法定节假日中
            if (holidayList.Where(x => x.Dated.GetValueOrDefault().Date == toTime.Date && x.Ufld1 == "休假").Any())
            {
                toTime = toTime.AddDays(-1);
                return ForwardDay(toTime, holidayList);
            }
            int week = (int)toTime.DayOfWeek;
            if (week != 0 && week != 6)
            {
                return toTime;
            }
            else
            {
                toTime = toTime.AddDays(-1);
                return ForwardDay(toTime, holidayList);
            }
        }
    }
}