using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WebAPIServer.Extensions
{
    public static class TimeExtensions
    {
        public static DateTime? ToDateTime(this string timeStamp)
        {
            long ticks = 0L;
            if (long.TryParse(timeStamp, out ticks))
            {
                DateTime dateTime = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
                TimeSpan value = new TimeSpan(ticks);
                return new DateTime?(dateTime.Add(value));
            }
            DateTime now = DateTime.Now;
            if (DateTime.TryParse(timeStamp, out now))
            {
                return new DateTime?(now);
            }
            return null;
        }

    }
}