using System.Drawing;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace 鼠标连点器
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        // Windows API constants
        private const int MOUSEEVENTF_LEFTDOWN = 0x02;
        private const int MOUSEEVENTF_LEFTUP = 0x04;
        private const int WH_KEYBOARD_LL = 13;
        private const int WM_KEYDOWN = 0x0100;
        private const int VK_F8 = 0x77; // Virtual key code for F8

        // Importing necessary Windows API functions
        [LibraryImport("user32.dll", EntryPoint = "mouse_event")]
        [UnmanagedCallConv(CallConvs = new Type[] { typeof(System.Runtime.CompilerServices.CallConvStdcall) })]
        private static partial void mouse_event(int dwFlags, int dx, int dy, int cButtons, int dwExtraInfo);

        [LibraryImport("user32.dll", EntryPoint = "GetCursorPos")]
        [return: MarshalAs(UnmanagedType.Bool)]
        private static partial bool GetCursorPos(out POINT lpPoint);

        [StructLayout(LayoutKind.Sequential)]
        public struct POINT
        {
            public int X;
            public int Y;
        }

        [LibraryImport("user32.dll", EntryPoint = "SetWindowsHookExW", SetLastError = true)]
        private static partial IntPtr SetWindowsHookEx(int idHook, LowLevelKeyboardProc lpfn, IntPtr hMod, uint dwThreadId);

        [LibraryImport("user32.dll", EntryPoint = "UnhookWindowsHookEx", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        private static partial bool UnhookWindowsHookEx(IntPtr hhk);

        [LibraryImport("user32.dll", EntryPoint = "CallNextHookEx", SetLastError = true)]
        private static partial IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);

        [LibraryImport("kernel32.dll", EntryPoint = "GetModuleHandleW", SetLastError = true, StringMarshalling = StringMarshalling.Custom, StringMarshallingCustomType = typeof(System.Runtime.InteropServices.Marshalling.AnsiStringMarshaller))]
        private static partial IntPtr GetModuleHandle(string lpModuleName);

        // Delegate for low-level keyboard proc
        private delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);

        private LowLevelKeyboardProc _proc;
        private IntPtr _hookID = IntPtr.Zero;

        // Timer for clicking
        private Timer clickTimer;
        private bool isClicking = false;

        public MainWindow()
        {
            InitializeComponent();
            _proc = HookCallback;
            _hookID = SetHook(_proc);
        }

        private IntPtr SetHook(LowLevelKeyboardProc proc)
        {
            using (var curProcess = System.Diagnostics.Process.GetCurrentProcess())
            using (var curModule = curProcess.MainModule)
            {
                return SetWindowsHookEx(WH_KEYBOARD_LL, proc, GetModuleHandle(curModule.ModuleName), 0);
            }
        }

        private IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
        {
            if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN)
            {
                int vkCode = Marshal.ReadInt32(lParam);

                if (vkCode == VK_F8)
                {
                    if (isClicking)
                    {
                        StopClicking();
                    }
                    else
                    {
                        StartClicking();
                    }
                }
            }

            return CallNextHookEx(_hookID, nCode, wParam, lParam);
        }

        private void StartClicking()
        {
            isClicking = true;
            clickTimer = new Timer(ClickMouse, null, 0, 50); // Click every 100 ms (adjust as needed)
        }

        private void StopClicking()
        {
            isClicking = false;
            if (clickTimer != null)
            {
                clickTimer.Dispose();
            }
        }

        private void ClickMouse(object state)
        {
            GetCursorPos(out POINT cursorPos);
            mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, cursorPos.X, cursorPos.Y, 0, 0);
        }

        protected override void OnClosed(EventArgs e)
        {
            UnhookWindowsHookEx(_hookID);
            base.OnClosed(e);
        }
        int i = 0;
        private void 按钮_Click(object sender, RoutedEventArgs e)
        {
            (sender as Button).Content = i.ToString();
            i++;
        }
    }
}