Proof of concept for launching World of Warcraft Classic

ProofOfConcept.cs

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Windows.Forms;

namespace ProofOfConcept
{
    class Program
    {
        [DllImport("user32.dll")]
        private static extern IntPtr GetForegroundWindow();

        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        static extern int GetWindowTextLength(IntPtr hWnd);

        [DllImport("user32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
        static extern int GetWindowText(IntPtr hWnd, StringBuilder lpString,
    int nMaxCount);


        static void Main(string[] args)
        {
            // launch battle.net client with the parameters World of Warcraft Launcher.exe gives it, this will open the UI on the correct page
            Process.Start("C:\\Program Files (x86)\\Battle.net\\Battle.net.exe", "--game=wow_enus --gamepath=\"G:\\World of Warcraft\" --productcode=wow_classic");

            while (true)
            {
                // Check the foreground window title
                IntPtr h = GetForegroundWindow();

                int len = GetWindowTextLength(h);
                StringBuilder title = new StringBuilder(len + 1);
                GetWindowText(h, title, title.Capacity);

                Console.WriteLine(title.ToString());

                // if it's the battle.net client send the enter key to launch the game
                if (title.ToString().Equals("Blizzard Battle.net"))
                {
                    SendKeys.SendWait("{ENTER}");
                    return;
                }

                // unsire if i need to trottle down the foreground check or not
                // Thread.Sleep(100);
            }
        }
    }
}