using System;

using System.Collections.Generic;

using System.Runtime.InteropServices;

using System.Text;





namespace csharp_cg_bot_example

{

    class Program

    {

        public delegate bool EnumWindowsProc(IntPtr hwnd, IntPtr lParam);



        [DllImport("user32.dll")]

        public static extern IntPtr FindWindow(string lpClassName, String lpWindowName);



        [DllImport("user32", EntryPoint = "SendMessageW")]

        public static extern int SendMessage(IntPtr hWnd, int wMsg, IntPtr wParam, String lParam);



        [DllImport("user32.dll")]

        public static extern int EnumChildWindows(IntPtr hwndParent, EnumWindowsProc lpEnumFunc, IntPtr lParam);



        [DllImport("user32.dll")]

        static extern bool EnumWindows(EnumWindowsProc lpEnumFunc, IntPtr lParam);



        [DllImport("user32.dll")]

        static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount);



        [DllImport("user32.dll")]

        static extern int GetWindowText(IntPtr hWnd, StringBuilder lpString, int nMaxCount);



        static IntPtr hwnd_send;

        static List<string> room_list;



        public const int WM_SETTEXT = 0x000C;



        static bool init_room_list_cb(IntPtr hWnd, IntPtr lParam)

        {

            StringBuilder sb = new StringBuilder(256);

            GetClassName(hWnd, sb, sb.Capacity);



           if (sb.ToString() == "DlgGroupChat Window Class")

           {

                StringBuilder sbRoomName = new StringBuilder(256);

                GetWindowText(hWnd, sbRoomName, sbRoomName.Capacity);

                Console.WriteLine(sbRoomName.ToString());



                room_list.Add(sbRoomName.ToString());

           }



            return true;

        }





        static void init_room_list()

        {

            EnumWindowsProc childProc = new EnumWindowsProc(init_room_list_cb);

            EnumWindows(childProc, IntPtr.Zero);



            if (room_list.Count == 0)

            {

                Console.WriteLine("No rooms found");

            }

        }



        static bool dlg_group_chat_cb(IntPtr hWnd, IntPtr lParam)

        {

            StringBuilder sb = new StringBuilder(256);

            GetClassName(hWnd, sb, sb.Capacity);



            if (sb.ToString() == "RichEdit20W")

            {

                hwnd_send = hWnd;

            }



            return true;

        }



        static void init_room_hwnd(string room_name)

        {

            IntPtr hwnd = FindWindow("DlgGroupChat Window Class", room_name);

            EnumWindowsProc childProc = new EnumWindowsProc(dlg_group_chat_cb);

            EnumChildWindows(hwnd, childProc, IntPtr.Zero);

        }



        static void send_text(string text)

        {

            SendMessage(hwnd_send, WM_SETTEXT, IntPtr.Zero, text);

        }



        static void Main(string[] args)

        {

            room_list = new List<string>();

            init_room_list();

            Console.WriteLine("Rooms:" + room_list.Count);



            foreach (string room in room_list)

            {

                init_room_hwnd(room);

                send_text("Connected to the room: " + room);

            }

        }

    }

}