using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

using System.Diagnostics;

namespace AutoShutDown

{

    public partial class MainForm : Form

    {

        public MainForm()

        {

            //MessageBox.Show(Process.GetCurrentProcess().ProcessName.ToString());

            //Only one instance can run at the same time.

            Process[] tylan = Process.GetProcessesByName("AutoShutDown");

            if (tylan.Count() > )

            {

                MessageBox.Show("Sorry, the instance of this program has already run on this computer. You can not run it again.");

                System.Diagnostics.Process.GetCurrentProcess().Kill();

            }

            InitializeComponent();

            AddProcesses();

        }

        private void AddProcesses()

        {

            var processes = System.Diagnostics.Process.GetProcesses();

            foreach (var process in processes)

            {

                Processes.Items.Add(process.ProcessName.ToString());

            }

        }

        private void Processes_SelectedIndexChanged(object sender, EventArgs e)

        {

            Processes.Text = Processes.SelectedItem.ToString();

        }

        private void OKButton_Click(object sender, EventArgs e)

        {

            //Check if the process has been selected.

            if (Processes.Text == "")

            {

                MessageBox.Show("Please select a process first.");

            }

            else

            {

                //Check the process's status every 5 miniutes.

                System.Timers.Timer tmr = new System.Timers.Timer(5000);

                tmr.Elapsed += new System.Timers.ElapsedEventHandler(CheckProcess);

                tmr.AutoReset = true;

                tmr.Enabled = true;

                this.Hide();

            }

        }

        private void CheckProcess(object source, System.Timers.ElapsedEventArgs e)

        {

            int numOfTheProcesses = ;

            var processes = System.Diagnostics.Process.GetProcesses();

            foreach (var process in processes)

            {

                string TheProcessName = "";

                if (Processes.InvokeRequired)

                {

                    Processes.Invoke(new MethodInvoker(delegate { TheProcessName = Processes.Text; }));

                }

                if (process.ProcessName == TheProcessName)

                {

                    //Find the objective process.

                    //MessageBox.Show(TheProcessName);

                    numOfTheProcesses++;

                }

            }

            if (numOfTheProcesses == )

            {

                //No such process, shut down the computer.

                MessageBox.Show("The computer is ready to be shut down.");

                //Shut down the comp

                System.Diagnostics.Process myProcess = new System.Diagnostics.Process();

                myProcess.StartInfo.FileName = "cmd.exe";

                myProcess.StartInfo.UseShellExecute = false;

                myProcess.StartInfo.RedirectStandardInput = true;

                myProcess.StartInfo.RedirectStandardOutput = true;

                myProcess.StartInfo.RedirectStandardError = true;

                myProcess.StartInfo.CreateNoWindow = true;

                myProcess.Start();

                myProcess.StandardInput.WriteLine("shutdown -s -t 0");

            }

        }

    }

}