using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.NetworkInformation;
using System.Threading;
using SafeMobileLib;

namespace MotoTrbo_GW
{
    class PingThread
    {     
        string ip;        
        private int interval;
        bool status;
        
        /// <summary>
        /// ping class
        /// </summary>
        /// <param name="ip">dest IP</param>
        /// <param name="interval">interval for pings in seconds</param>
        public PingThread(string ip, int interval)
        {
            this.ip = ip;
            this.interval = interval;
            status = false;
        }

        public void Worker()
        {
            SafeMobileLib.Utils.WriteLine("PingThread started for "+ip + " interval:"+interval);

            while (true)
            {
                try
                {                    
                    DateTime time = DateTime.Now;
                    //SafeMobileLib.Utils.WriteLine(ip+" start ping");
                    Ping pingSender = new Ping();
                    PingReply pReply = pingSender.Send(ip);
                    if (pReply.Status == IPStatus.Success)
                    {
                        if (status == false) //going from OFF->ON
                            OnNewPingComplete(true, ip);
                        status = true;
                    }
                    else //if (pReply.Status == IPStatus.TimedOut)
                    {
                        if (status == true) //going from ON->OFF
                            OnNewPingComplete(false, ip);
                        status = false;
                    }
                    //SafeMobileLib.Utils.WriteLine(ip + "stop ping" + (time-DateTime.Now)+" status:"+status);
                }
                catch
                {
                    SafeMobileLib.Utils.WriteLine("*** Could not ping: " + ip + " *****");
                }
                Thread.Sleep(interval);
            }
        }

        public delegate void NewPingCompleteDEl(bool status,string ip);
        public event NewPingCompleteDEl OnNewPingComplete;
    }
}