using System;

namespace PhxhSDK
{
    public static partial class Utils
    {
        public static ulong GetTimeStampMilliseconds()
        {
            DateTime startTime = TimeZoneInfo.ConvertTime(new DateTime(1970, 1, 1), TimeZoneInfo.Local);// 当地时区
            ulong timeStamp = (ulong)(DateTime.Now - startTime).TotalMilliseconds;
            return timeStamp;
        }
        
        public static ulong GetTimeStamp()
        {
            var ms = GetTimeStampMilliseconds();
            return ms / 1000;
        }
        
        public static DateTime GetDateTime(long timeStamp)
        {
            DateTime dateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
            long unixTimeStampInTicks = timeStamp * TimeSpan.TicksPerMillisecond;
            return  new DateTime(dateTime.Ticks + unixTimeStampInTicks, DateTimeKind.Utc) ;
        }

        public static string GetDateTimeString(DateTime dateTime)
        {
            return dateTime.ToLocalTime().ToString("yyyy-MM-dd  HH:mm:ss");
        }

        public static string GetDateByTimeStamp(long timeStamp)
        {
            return GetDateTimeString(GetDateTime(timeStamp));
        }
        
        public static string GetTimeString(int second, bool shortStr) {
            int hour = (int) second / 3600;
            int leftMinutes = (second % 3600) / 60;
            int leftSeconds = second % 60;
            if (hour == 0) {
                if (shortStr)
                {
                    return $"{leftMinutes}m";
                }
                else
                {
                    return $"{leftMinutes}m{leftSeconds:d2}s";
                }
            }
            if (hour >= 24) {
                if (shortStr)
                {
                    return $"{hour / 24}d";
                }
                else
                {
                    return $"{hour / 24}d{hour % 24:d2}h";
                }
            }
            if (shortStr)
            {
                return $"{hour}h";
            }
            else
            {
                return $"{hour}h{leftMinutes:d2}m";
            }
        }
    }
}