using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Security.Principal;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace ssgrestserver
{
    static class Program
    {
        /// <summary>
        /// 해당 응용 프로그램의 주 진입점입니다.
        /// </summary>
        [STAThread]
        static void Main()
        {
            System.Diagnostics.Process[] processes = null;
            string processName = System.Diagnostics.Process.GetCurrentProcess().ProcessName.ToUpper();
            processes = System.Diagnostics.Process.GetProcessesByName(processName);
            if (processes.Length > 2)
            {
                MessageBox.Show("프로그램이 이미 실행중입니다.");
                return;
            }

            if (IsAdministrator() == false)
            {
                ProcessStartInfo procInfo = new ProcessStartInfo();
                procInfo.UseShellExecute = true;
                procInfo.FileName = Application.ExecutablePath;
                procInfo.WorkingDirectory = Environment.CurrentDirectory;
                procInfo.Verb = "runas";
                Process.Start(procInfo);
            }
            else
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                mainForm = new Form1();
                Application.Run(mainForm);
            }
        }
        public static Form1 mainForm;

        public static bool IsAdministrator()
        {
            WindowsIdentity identity = WindowsIdentity.GetCurrent();

            if (identity != null)
            {
                WindowsPrincipal principal = new WindowsPrincipal(identity);
                return principal.IsInRole(WindowsBuiltInRole.Administrator);
            }
            return false;
        }
    }
}