using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.Net;
using System.Net.Sockets;

namespace NetMonitorServer
{
    class SetService
    {
        UdpClient net_send = new UdpClient();
        IPEndPoint net_send_port = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 34524);
        System.ServiceProcess.ServiceController serviceController;
            
        public SetService(string data)
        {
            this.serviceController = new System.ServiceProcess.ServiceController();
            if (data.Substring(0, 13).ToLower() == "service start")
                this.setServiceStart(data);
            if (data.Substring(0, 12).ToLower() == "service stop")
                this.setServiceStop(data);
            if (data.Substring(0, 14).ToLower() == "service status")
                this.getServiceStatus(data);
        }

        private void setServiceStart(string data)
        {
            String[] par = data.Split(' ');
            if (par.Length != 3)
                return;
            this.serviceController.ServiceName = par[2];
            try
            {
                this.serviceController.Start();
                this.serviceController.WaitForStatus(System.ServiceProcess.ServiceControllerStatus.Running, new TimeSpan(0, 0, 30));
            }
            catch (Exception)
            {
                this.sendStr("false");
            }
            if (this.serviceController.Status == System.ServiceProcess.ServiceControllerStatus.Running)
                this.sendStr("true");
            else
                this.sendStr("false");
        }

        private void setServiceStop(string data)
        {
            String[] par = data.Split(' ');
            if (par.Length != 3)
                return;
            this.serviceController.ServiceName = par[2];
            try
            {
                this.serviceController.Stop();
                this.serviceController.WaitForStatus(System.ServiceProcess.ServiceControllerStatus.Stopped, new TimeSpan(0, 0, 30));
            }
            catch (Exception)
            {
                this.sendStr("false");
            }
            if (this.serviceController.Status == System.ServiceProcess.ServiceControllerStatus.Stopped)
                this.sendStr("true");
            else
                this.sendStr("false"); 
        }

        private void getServiceStatus(string data)
        {
            String[] par = data.Split(' ');
            if (par.Length != 3)
                return;
            try 
            {
                this.serviceController.ServiceName = par[2];
                if (this.serviceController.Status == System.ServiceProcess.ServiceControllerStatus.Running)
                    this.sendStr("true");
                else
                    this.sendStr("false");
            }
            catch (Exception)
            {
                this.sendStr("false");
            }
        }

        private void sendStr(string p)
        {
            byte[] answ = Encoding.UTF8.GetBytes(p);
            net_send.Send(answ, answ.Length, net_send_port);
        }
    }
}