using System;
using System.Runtime.InteropServices;
using FFXIVClientStructs.FFXIV.Client.Graphics.Kernel;

namespace Questionable.Controller.Utils;

internal static class WindowsKeypress
{
	public enum LimitedKeys
	{
		A = 65,
		Escape = 27
	}

	private static class NativeMethods
	{
		[DllImport("user32.dll", CharSet = CharSet.Auto)]
		[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
		public static extern nint SendMessage(nint hWnd, uint Msg, nint wParam, nint lParam);
	}

	public const uint WM_KEYUP = 257u;

	public const uint WM_KEYDOWN = 256u;

	public unsafe static void SendKeypress(LimitedKeys key)
	{
		void* hWnd = Device.Instance()->hWnd;
		NativeMethods.SendMessage((nint)hWnd, 256u, (nint)key, IntPtr.Zero);
		NativeMethods.SendMessage((nint)hWnd, 257u, (nint)key, IntPtr.Zero);
	}

	public static void SendMessage(nint hWnd, uint msg, nint key)
	{
		NativeMethods.SendMessage(hWnd, msg, key, IntPtr.Zero);
	}
}