using IOTContainer.Model;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace IOTContainer.Common

{
    public class WinApi
    {
        private const uint WM_SYSCOMMAND = 0x112;                    //系统消息
        private const int SC_MONITORPOWER = 0xF020;                  //关闭显示器的系统命令
        private const int SC_SCREENSAVE = 0xf140;
        private const int MonitorPowerOff = 2;                       //2为PowerOff, 1为省电状态，-1为开机
        private const int MonitorPowerOn = -1;                       //2为PowerOff, 1为省电状态，-1为开机
        private static readonly IntPtr HWND_BROADCAST = new IntPtr(0xffff);//广播消息，所有顶级窗体都会接收

        enum MouseEventFlag : uint
        {
            Move = 0x0001,
            LeftDown = 0x0002,
            LeftUp = 0x0004,
            RightDown = 0x0008,
            RightUp = 0x0010,
            MiddleDown = 0x0020,
            MiddleUp = 0x0040,
            XDown = 0x0080,
            XUp = 0x0100,
            Wheel = 0x0800,
            VirtualDesk = 0x4000,
            Absolute = 0x8000
        }

        public static readonly IntPtr HWND_TOPMOST = new IntPtr(-1);    //窗体置顶
        public static readonly IntPtr HWND_NOTOPMOST = new IntPtr(-2);    //取消窗体置顶
        public static readonly IntPtr HWND_BOTTOM = new IntPtr(1);    //取消窗体置顶
        public const uint SWP_NOMOVE = 0x0002;    //不调整窗体位置
        public const uint SWP_NOSIZE = 0x0001;    //不调整窗体大小
        public const int WM_CLOSE = 0x0010;//关闭窗体

        public enum ShowWindowCommands : int
        {

            SW_HIDE = 0,
            SW_SHOWNORMAL = 1,
            SW_NORMAL = 1,
            SW_SHOWMINIMIZED = 2,
            SW_SHOWMAXIMIZED = 3,
            SW_MAXIMIZE = 3,
            SW_SHOWNOACTIVATE = 4,
            SW_SHOW = 5,
            SW_MINIMIZE = 6,
            SW_SHOWMINNOACTIVE = 7,
            SW_SHOWNA = 8,
            SW_RESTORE = 9,
            SW_SHOWDEFAULT = 10,
            SW_MAX = 10
        }

        //定义结构体
        [StructLayout(LayoutKind.Sequential)]
        public struct LASTINPUTINFO
        {
            // 设置结构体块容量
            [MarshalAs(UnmanagedType.U4)]
            public int cbSize;
            // 捕获的时间
            [MarshalAs(UnmanagedType.U4)]
            public uint dwTime;
        }

        private LASTINPUTINFO mLastInputInfo;
        [DllImport("user32.dll")]
        public static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);

        [DllImport("user32.dll")]
        static extern void mouse_event(MouseEventFlag flags, int dx, int dy, int data, UIntPtr extraInfo);

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

        [DllImport("Kernel32.dll", SetLastError = true)]
        public static extern bool CloseHandle(IntPtr hObject);

        [DllImport("user32.dll", SetLastError = true)]
        public static extern IntPtr SetParent(IntPtr ChildWin, IntPtr FatherWin);

        [DllImport("user32.dll", SetLastError = true)]
        public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int cx, int cy, uint uflags);

        [DllImport("user32.dll", SetLastError = true)]
        public static extern bool MoveWindow(IntPtr hWnd, int x, int y, int nWindth, int nheight, bool brepaint);

        [DllImport("User32.dll", EntryPoint = "SendMessage")]
        public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);

        //关屏
        [DllImport("user32.dll")]
        private static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);

        [DllImport("shell32.dll")]
        public extern static IntPtr ShellExecute(IntPtr hwnd,
                                                string lpOperation,
                                                string lpFile,
                                                string lpParameters,
                                                string lpDirectory,
                                                int nShowCmd
                                               );

        //锁屏
        [DllImport("user32.dll")]
        public static extern bool LockWorkStation();
        [DllImport("user32.dll", EntryPoint = "ShowWindow", CharSet = CharSet.Auto)]
        public static extern int ShowWindow(IntPtr hwnd, int nCmdShow);

        public static void FindSetTop(string clasName, string winName)
        {
            IntPtr Win1 = FindWindow(clasName, winName);//设置置顶

            if (Win1 != null && Win1 != IntPtr.Zero)
            {
                SetWindowPos(Win1, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
            }
        }
        public static void Windows_Minimize(string winName)
        {
            IntPtr Win1 = FindWindow(null, winName);
            if (Win1 != null && Win1 != IntPtr.Zero)
            {
                ShowWindow(Win1, (int)ShowWindowCommands.SW_MINIMIZE );
            }
        }
        /// <summary>
        /// 获取鼠标位置
        /// </summary>
        /// <param name="point"></param>
        /// <returns></returns>
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern bool GetCursorPos(out MyPoint point);

        /// <summary>
        /// 获取置顶窗口名
        /// </summary>
        /// <returns></returns>
        [DllImport("user32.dll")]
        private static extern IntPtr GetForegroundWindow();

        public static string GetTopWindowName()
        {
            try
            {
                IntPtr hwnd = GetForegroundWindow();

                Process[] pro = Process.GetProcesses();
                foreach (var item in pro)
                {
                    if (item.MainWindowHandle.ToInt32() == hwnd.ToInt32())
                    {
                        return item.ProcessName.ToLower();
                    }
                }

                return string.Empty;
            }
            catch (Exception ex)
            {
                Log.MyLog.WriteLogFile(ex.ToString(), "WinApi");
                return string.Empty;
            }
        }
        [DllImport("user32.dll", EntryPoint = "ShowCursor", CharSet = CharSet.Auto)]
        public static extern void ShowCursor(int status);
        [DllImport("kernel32.dll")]
        public static extern IntPtr CreateWaitableTimer(IntPtr lpTimerAttributes, bool bManualReset, IntPtr lpTimerName);
        

        [DllImport("Kernel32.dll")]
        public static extern UInt32 WaitForSingleObject(IntPtr pHandles, int dwMilliseconds);
    }
}