using KLHZ.Trader.Core.Exchange.Models.Trading;

namespace KLHZ.Trader.Core.Exchange.Utils
{
    internal static class ExchangeScheduler
    {
        private readonly static TimeOnly _openTimeMain = new(6, 10);
        private readonly static TimeOnly _closeTimeMain = new(20, 45);

        private readonly static TimeOnly _openTimeHoliday = new(7, 10);
        private readonly static TimeOnly _closeTimeHoliday = new(17, 45);

        private readonly static TimeOnly _firstClearingStart = new(10, 55);
        private readonly static TimeOnly _firstClearingEnd = new(11, 10);

        private readonly static TimeOnly _mainClearingStart = new(15, 50);
        private readonly static TimeOnly _mainClearingEnd = new(16, 5);

        internal static ExchangeState GetCurrentState(DateTime? currentDt = null)
        {
            var dt = currentDt ?? DateTime.UtcNow;
            var day = dt.DayOfWeek;

            var time = TimeOnly.FromDateTime(dt);
            if (day == DayOfWeek.Sunday || day == DayOfWeek.Saturday)
            {
                if (time > _openTimeHoliday && time < _closeTimeHoliday)
                {
                    return ExchangeState.Open;
                }
            }
            else
            {
                if (time > _openTimeMain && time < _closeTimeMain)
                {

                    if (time > _firstClearingStart && time < _firstClearingEnd || time > _mainClearingStart && time < _mainClearingEnd)
                    {
                        return ExchangeState.ClearingTime;
                    }
                    return ExchangeState.Open;
                }
            }

            return ExchangeState.Close;
        }
    }
}