using NPOI.SS.Formula.Functions;
using System;
using System.Collections.Generic;
using System.Text;

namespace ProductionLineMonitor.Core.Utils
{
    public class DateTimeHelper
    {
        public static void GetStartEndTime(DateTime date, out DateTime startTime, out DateTime endTime)
        {
            int year, month, day;
            year = date.Year;
            month = date.Month;
            day = date.Day;

            if (day < 21)
            {
                month -= 1;

                if (month == 0)
                {
                    year -= 1;
                    month = 12;
                }
            }

            startTime = Convert.ToDateTime($"{year}-{month}-21 08:00:00");
            endTime = startTime.AddMonths(1).AddDays(-1);
        }

        public static List<object> GetDate(DateTime startTime, DateTime endTime)
        {
            List<object> rev = new List<object>();
            for (DateTime dt = startTime; dt <= endTime; dt = dt.AddDays(+1))
            {
                rev.Add(dt.ToString("yyyy-MM-dd"));
            }
            return rev;
        }

        public static List<DateTime> GetDateTime(DateTime startTime, DateTime endTime)
        {
            List<DateTime> rev = new List<DateTime>();
            for (DateTime dt = startTime; dt < endTime; dt = dt.AddDays(+1))
            {
                rev.Add(dt);
            }
            return rev;
        }

        public static List<string> GetDateString(DateTime startTime, DateTime endTime)
        {
            List<string> rev = new List<string>();
            for (DateTime dt = startTime; dt <= endTime; dt = dt.AddDays(+1))
            {
                rev.Add(dt.ToString("yyyy-MM-dd"));
            }
            return rev;
        }

        public static List<object> GetDateShift(DateTime startTime, DateTime endTime)
        {
            List<object> rev = new List<object>();
            for (DateTime dt = startTime; dt <= endTime; dt = dt.AddDays(+1))
            {
                rev.Add(dt.ToString("yyyy-MM-dd 08:00:00"));
                rev.Add(dt.ToString("yyyy-MM-dd 20:00:00"));
            }
            return rev;
        }

        public static List<object> GetDateShiftV1(DateTime startTime, DateTime endTime)
        {
            List<object> rev = new List<object>();
            for (DateTime dt = startTime; dt <= endTime; dt = dt.AddDays(+1))
            {
                rev.Add(dt.ToString("yyyy-MM-dd 白班"));
                rev.Add(dt.ToString("yyyy-MM-dd 夜班"));
            }
            return rev;
        }
    }
}