using RTCSync.Utils;

namespace RTCSync.Models;

public class TimeModel(ReadOnlySpan<byte> rtcBytes)
{
    private static int CalculateHours(ReadOnlySpan<byte> rtcBytes)
    {
        var hours = 0;
        if (TimeModelBI.TwentyHourBI.Take(rtcBytes) == 1)
        {
            hours = 20;
        }
        else if (TimeModelBI.TenHourBI.Take(rtcBytes) == 1)
        {
            hours = 10;
        }
        
        hours += TimeModelBI.HourBI.Take(rtcBytes);
        return hours;
    }
    
    public DateTime Time = new DateTime(
        2000 + TimeModelBI.TenYearBI.Take(rtcBytes) * 10 + TimeModelBI.YearBI.Take(rtcBytes),
        TimeModelBI.TenMonthBI.Take(rtcBytes) * 10 + TimeModelBI.MonthBI.Take(rtcBytes),
        TimeModelBI.TenDateBI.Take(rtcBytes) * 10 + TimeModelBI.DateBI.Take(rtcBytes),
        CalculateHours(rtcBytes),
        TimeModelBI.TenMinutesBI.Take(rtcBytes) * 10 + TimeModelBI.MinutesBI.Take(rtcBytes),
        TimeModelBI.TenSecondsBI.Take(rtcBytes) * 10 + TimeModelBI.SecondsBI.Take(rtcBytes),
        DateTimeKind.Local
        );
}