using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Threading;

namespace Send_A_Key
{
    public partial class Form1 : Form
    {
        #region Imports
        //RegisterHotkey
        [DllImport("user32.dll")]
        public static extern bool RegisterHotKey(IntPtr hWnd, int id, uint fsModifiers, uint vk);

        //UnregisterHotkey
        [DllImport("user32.dll")]
        public static extern bool UnregisterHotKey(IntPtr hWnd, int id);

        //FindWindow
        [DllImport("user32.dll", SetLastError = true)]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

        //PostMessage
        [return: MarshalAs(UnmanagedType.Bool)]
        [DllImport("user32.dll", SetLastError = true)]
        public static extern bool PostMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);

        //PostMessage
        [DllImport("user32.dll")]
        public static extern bool PostMessage(IntPtr hWnd, uint Msg, uint wParam, uint lParam);

        //MapVirtualKey
        [DllImport("user32.dll")]
        public static extern int MapVirtualKey(int uCode, uint uMapType);
        #endregion

        #region Important Variables
        //Set default settings in case the user is a retard
        int Keycode = (int)Keys.Control;
        int Delay = 100;
        int Method = 0;
        Thread PressShitThread;

        IntPtr hWnd;
        const uint WM_KEYDOWN = 0x0100;
        #endregion

        public Form1()
        {
            InitializeComponent();

            Object[] ComboBoxItems = new object[] {"SHIFT","CTRL","ALT","SPACE","END","HOME","INS","DEL","0","1","2","3","4","5","6","7","8","9","A","B",
            "C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"};
            comboBox1.Items.AddRange(ComboBoxItems);

            RegisterHotKey(Handle, 9001, 0, (uint)Keys.F9);
        }

        protected override void WndProc(ref Message m)
        {
            base.WndProc(ref m);
            switch (m.Msg)
            {
                case 0x312:
                    switch ((int)m.WParam)
                    {
                        case 9001: checkBox1.Checked ^= true;
                            break;
                    }
                    break;
            }
        }

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (comboBox1.Text.Length == 1)
            {
                char c;
                char.TryParse(comboBox1.Text, out c);
                Keycode = (int)c;
            }
            else
            {
                switch (comboBox1.SelectedIndex)
                {
                    case 0: Keycode = (int)Keys.Shift;
                        break;
                    case 1: Keycode = (int)Keys.Control;
                        break;
                    case 2: Keycode = (int)Keys.Alt;
                        break;
                    case 3: Keycode = (int)Keys.Space;
                        break;
                    case 4: Keycode = (int)Keys.End;
                        break;
                    case 5: Keycode = (int)Keys.Home;
                        break;
                    case 6: Keycode = (int)Keys.Insert;
                        break;
                    case 7: Keycode = (int)Keys.Delete;
                        break;
                }
            }
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {
            int Temp;
            if (int.TryParse(textBox1.Text, out Temp) && Temp > 1)
            {
                Delay = Temp;
            }
        }

        private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
        {
            Method = comboBox2.SelectedIndex;
        }

        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBox1.Checked)
            {
                PressShitThread = new Thread(new ThreadStart(PressShit));
                PressShitThread.Start();
            }
            else
            {
                PressShitThread.Abort();
            }
        }

        void PressShit()
        {
            LOOP:
            if (Method == 0)
            {
                if (hWnd == IntPtr.Zero)
                {
                    hWnd = FindWindow("MapleStoryClass", null);
                }
                PostMessage(hWnd, WM_KEYDOWN, Keycode, MapVirtualKey(Keycode, 0) << 16);
            }
            else
            {
                SIClass.SendKeyAsInput(Keycode);
            }
            Thread.Sleep((int)Delay);
            goto LOOP;
        }
    }
}