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

namespace FileWatcher
{
    /// <summary>
    /// DO NOT CAST TO A TIMER, always interact with this class directly. Start and Stop are not overridden. 
    /// </summary>
    public class TimerPlus : System.Timers.Timer
    {
        private bool m_Running;
        private DateTime m_Start;
        private DateTime m_End;

        public TimerPlus()
        {
        }

        public TimerPlus(double interval)
            : base(interval)
        {
        }

        public new void Start()
        {
            m_Running = true;
            m_Start = DateTime.Now;
            base.Start();
        }

        public new void Stop()
        {
            m_End = DateTime.Now;
            m_Running = false;
            base.Stop();
        }

        public TimeSpan TimeElapsed
        {
            get { return m_Running ? DateTime.Now - m_Start : m_End - m_Start; }
        }

        public TimeSpan TimeRemaining
        {
            get { return TimeSpan.FromMilliseconds(Interval) - TimeElapsed; }
        }
    }
}