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

namespace MotoTrbo_GW
{
    class PingClass
    {
        string ip;
        private Ping pingSender;
        private bool isAlive;
        System.Threading.Timer timer;
        private int interval;
        public bool IsAlive
        {
            get { return isAlive; }
            //set { isAlive = value; }
        }
        /// <summary>
        /// ping class
        /// </summary>
        /// <param name="ip">dest IP</param>
        /// <param name="interval">interval for pings in seconds</param>
        public PingClass(string ip, int interval)
        {
            this.ip = ip;
            this.interval = interval;
            pingSender = new Ping();
        }

        public void Start()
        {
            SafeMobileLib.Utils.WriteLine("Starting ping thread for :" +ip +" interval(secs) :"+interval);
            timer = new System.Threading.Timer(timerDel, null, new TimeSpan(0, 0, 0), new TimeSpan(0, 0, interval));        
        }

        public void Stop()
        {
            timer = null;
        }

        private void timerDel(Object state)
        {
            try
            {
                PingReply pReply = pingSender.Send(ip);
                //SafeMobileLib.Utils.WriteLine("Status: "+pReply.Status+" IP: "+ip);
                if (pReply.Status == IPStatus.Success)
                {                    
                    //SafeMobileLib.Utils.WriteLine("Ping for " + ip + " return successfuly!!! " +DateTime.Now.ToString());
                    isAlive = true;
                }
                else
                {
                    //SafeMobileLib.Utils.WriteLine("Host " + ip + " could not be reached!!!" + DateTime.Now.ToString());
                    isAlive = false;
                }

                if (this.OnPingComplete != null)
                {
                    this.OnPingComplete(isAlive);
                }

                if (this.OnNewPingComplete != null)
                {
                    this.OnNewPingComplete(isAlive, ip);
                }
            }
            catch (Exception e)
            {
                SafeMobileLib.Utils.WriteLine("Ping exception " + ip);
            }
        }

        public delegate void PingCompleteDEl(bool status);
        public event PingCompleteDEl OnPingComplete;

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