using System;
using System.Runtime.InteropServices;

namespace Szmedi.AIScriptRunner.Assists;

public class WinIntPtr
{
    [DllImport("user32.dll")]
    public static extern bool EnumWindows(CallBack lpEnumFunc, int lParam);

    public delegate bool CallBack(IntPtr hwnd, int lParam);//回调函数声明，后续还要实现回调函数实体。
    [DllImport("user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool SetForegroundWindow(IntPtr hWnd);
    [DllImport("user32.dll")]
    public static extern bool EnumChildWindows(IntPtr hWndParent, CallBack lpEnumFunc, int lParam);

    private IntPtr theHandle;
    public bool EnumWindowsProc(IntPtr hwnd, int lParam)
    {
        var len = GetWindowTextLength(hwnd);
        if (len > 10)
        {
            theHandle = hwnd;
            return false;//返回FALSE停止枚举
        }
        return true;
    }
    public void test()
    {
        CallBack cbEnumWindows = new(EnumWindowsProc);
        EnumWindows(cbEnumWindows, 0);
    }
    [DllImport("user32.dll")] private static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);

    //public void InputStr(IntPtr myIntPtr, string Input)
    //{
    //    byte[] ch = (ASCIIEncoding.ASCII.GetBytes(Input));
    //    for (int i = 0; i < ch.Length; i++)
    //    {
    //        SendMessage(PW, 0X102, ch, 0);
    //    }
    //}
    [DllImport("user32.dll")]
    private static extern int GetWindowTextLength(IntPtr hwnd);

    [DllImport("user32.dll", EntryPoint = "FindWindowEx", SetLastError = true)]
    public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);

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


    [DllImport("user32.dll")]
    public static extern IntPtr SetActiveWindow(IntPtr hWnd);

    public static void ShowAndActive(string winname)
    {
        var parenthWndldsl = FindWindow(null, winname);
        if (!parenthWndldsl.Equals(IntPtr.Zero))
        {
            ShowWindow(parenthWndldsl, 1);
            SetActiveWindow(parenthWndldsl);
        }
    }

    [DllImport("user32.dll")]
    public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);


    public static bool IsVisible(string winName)
    {
        var parenthWndldsl = FindWindow(null, winName);
        return !parenthWndldsl.Equals(IntPtr.Zero);
    }
}