using System;
using System.Drawing;
using System.Runtime.InteropServices;

// ReSharper disable InconsistentNaming
// ReSharper disable IdentifierTypo
// ReSharper disable UnusedMember.Local

namespace RageCoop.Client
{
    internal class Win32
    {
        #region ENUM

        /// <summary>
        ///     Enumerates the valid hook types passed as the idHook parameter into a call to SetWindowsHookEx.
        /// </summary>
        public enum HookType
        {
            /// <summary>
            ///     Installs a hook procedure that monitors messages generated as a result of an input event in a dialog box,
            ///     message box, menu, or scroll bar. For more information, see the MessageProc hook procedure.
            /// </summary>
            WH_MSGFILTER = -1,

            /// <summary>
            ///     Installs a hook procedure that records input messages posted to the system message queue. This hook is
            ///     useful for recording macros. For more information, see the JournalRecordProc hook procedure.
            /// </summary>
            WH_JOURNALRECORD = 0,

            /// <summary>
            ///     Installs a hook procedure that posts messages previously recorded by a WH_JOURNALRECORD hook procedure.
            ///     For more information, see the JournalPlaybackProc hook procedure.
            /// </summary>
            WH_JOURNALPLAYBACK = 1,

            /// <summary>
            ///     Installs a hook procedure that monitors keystroke messages. For more information, see the KeyboardProc
            ///     hook procedure.
            /// </summary>
            WH_KEYBOARD = 2,

            /// <summary>
            ///     Installs a hook procedure that monitors messages posted to a message queue. For more information, see the
            ///     GetMsgProc hook procedure.
            /// </summary>
            WH_GETMESSAGE = 3,

            /// <summary>
            ///     Installs a hook procedure that monitors messages before the system sends them to the destination window
            ///     procedure. For more information, see the CallWndProc hook procedure.
            /// </summary>
            WH_CALLWNDPROC = 4,

            /// <summary>
            ///     Installs a hook procedure that receives notifications useful to a CBT application. For more information,
            ///     see the CBTProc hook procedure.
            /// </summary>
            WH_CBT = 5,

            /// <summary>
            ///     Installs a hook procedure that monitors messages generated as a result of an input event in a dialog box,
            ///     message box, menu, or scroll bar. The hook procedure monitors these messages for all applications in the
            ///     same desktop as the calling thread. For more information, see the SysMsgProc hook procedure.
            /// </summary>
            WH_SYSMSGFILTER = 6,

            /// <summary>
            ///     Installs a hook procedure that monitors mouse messages. For more information, see the MouseProc hook
            ///     procedure.
            /// </summary>
            WH_MOUSE = 7,

            /// <summary>
            /// </summary>
            WH_HARDWARE = 8,

            /// <summary>
            ///     Installs a hook procedure useful for debugging other hook procedures. For more information, see the
            ///     DebugProc hook procedure.
            /// </summary>
            WH_DEBUG = 9,

            /// <summary>
            ///     Installs a hook procedure that receives notifications useful to shell applications. For more information,
            ///     see the ShellProc hook procedure.
            /// </summary>
            WH_SHELL = 10,

            /// <summary>
            ///     Installs a hook procedure that will be called when the application's foreground thread is about to become
            ///     idle. This hook is useful for performing low priority tasks during idle time. For more information, see the
            ///     ForegroundIdleProc hook procedure.
            /// </summary>
            WH_FOREGROUNDIDLE = 11,

            /// <summary>
            ///     Installs a hook procedure that monitors messages after they have been processed by the destination window
            ///     procedure. For more information, see the CallWndRetProc hook procedure.
            /// </summary>
            WH_CALLWNDPROCRET = 12,

            /// <summary>
            ///     Installs a hook procedure that monitors low-level keyboard input events. For more information, see the
            ///     LowLevelKeyboardProc hook procedure.
            /// </summary>
            WH_KEYBOARD_LL = 13,

            /// <summary>
            ///     Installs a hook procedure that monitors low-level mouse input events. For more information, see the
            ///     LowLevelMouseProc hook procedure.
            /// </summary>
            WH_MOUSE_LL = 14
        }

        #endregion
        /*
        public static Image CaptureWindow(IntPtr handle)
        {
            var windowDC = User32.GetWindowDC(handle);
            var rECT = new RECT();
            User32.GetWindowRect(handle, ref rECT);
            var num = rECT.right - rECT.left;
            var num1 = rECT.bottom - rECT.top;
            var intPtr = GDI32.CreateCompatibleDC(windowDC);
            var intPtr1 = GDI32.CreateCompatibleBitmap(windowDC, num, num1);
            var intPtr2 = GDI32.SelectObject(intPtr, intPtr1);
            GDI32.BitBlt(intPtr, 0, 0, num, num1, windowDC, 0, 0, 13369376);
            GDI32.SelectObject(intPtr, intPtr2);
            Image image = Image.FromHbitmap(intPtr1);
            GDI32.DeleteObject(intPtr1);
            GDI32.DeleteDC(intPtr);
            User32.ReleaseDC(handle, windowDC);
            return image;
        }
        */
        public static void ClearLastError()
        {
            SetLastErrorEx(0, 0);
        }

        public static class GDI32
        {
            public const int SRCCOPY = 13369376;

            [DllImport("gdi32.dll", CharSet = CharSet.None, ExactSpelling = false)]
            public static extern bool BitBlt(IntPtr hObject, int nXDest, int nYDest, int nWidth, int nHeight,
                IntPtr hObjectSource, int nXSrc, int nYSrc, int dwRop);

            [DllImport("gdi32.dll", CharSet = CharSet.None, ExactSpelling = false)]
            public static extern IntPtr CreateCompatibleBitmap(IntPtr hDC, int nWidth, int nHeight);

            [DllImport("gdi32.dll", CharSet = CharSet.None, ExactSpelling = false)]
            public static extern IntPtr CreateCompatibleDC(IntPtr hDC);

            [DllImport("gdi32.dll", CharSet = CharSet.None, ExactSpelling = false)]
            public static extern bool DeleteDC(IntPtr hDC);

            [DllImport("gdi32.dll", CharSet = CharSet.None, ExactSpelling = false)]
            public static extern IntPtr DeleteObject(IntPtr hObject);

            [DllImport("gdi32.dll", CharSet = CharSet.None, ExactSpelling = false)]
            public static extern IntPtr SelectObject(IntPtr hDC, IntPtr hObject);
        }

        public static class User32
        {
            [DllImport("user32.dll", CharSet = CharSet.None, ExactSpelling = false)]
            public static extern IntPtr GetDesktopWindow();

            [DllImport("user32.dll", CharSet = CharSet.None, ExactSpelling = false)]
            public static extern IntPtr GetWindowDC(IntPtr hWnd);

            [DllImport("user32.dll", CharSet = CharSet.None, ExactSpelling = false)]
            public static extern IntPtr GetWindowRect(IntPtr hWnd, ref RECT rect);

            [DllImport("user32.dll", CharSet = CharSet.None, ExactSpelling = false)]
            public static extern IntPtr ReleaseDC(IntPtr hWnd, IntPtr hDC);
        }

        #region INPUT-HOOK

        [DllImport("user32.dll", SetLastError = true)]
        internal static extern void SetLastErrorEx(uint dwErrCode, uint dwType);

        [DllImport("user32", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall,
            SetLastError = true)]
        public static extern IntPtr SetWindowsHookEx(HookType idHook, MouseProc lpfn, int hInstance, int threadId);

        [DllImport("user32.dll", SetLastError = true)]
        public static extern bool UnhookWindowsHookEx(IntPtr hhk);

        [DllImport("user32", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall,
            SetLastError = true)]
        public static extern int CallNextHookEx(IntPtr idHook, int nCode, IntPtr wParam, IntPtr lParam);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall,
            SetLastError = true)]
        public static extern int GetCurrentThreadId();

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall,
            SetLastError = true)]
        public static extern int GetModuleHandle(string lpModuleName);


        public delegate int MouseProc(int nCode, IntPtr wParam, IntPtr lParam);

        #endregion


        #region WM-CONST

        public const uint WM_ACTIVATE = 0x0006;
        public const uint WM_ACTIVATEAPP = 0x001C;
        public const uint WM_AFXFIRST = 0x0360;
        public const uint WM_AFXLAST = 0x037F;
        public const uint WM_APP = 0x8000;
        public const uint WM_ASKCBFORMATNAME = 0x030C;
        public const uint WM_CANCELJOURNAL = 0x004B;
        public const uint WM_CANCELMODE = 0x001F;
        public const uint WM_CAPTURECHANGED = 0x0215;
        public const uint WM_CHANGECBCHAIN = 0x030D;
        public const uint WM_CHANGEUISTATE = 0x0127;
        public const uint WM_CHAR = 0x0102;
        public const uint WM_CHARTOITEM = 0x002F;
        public const uint WM_CHILDACTIVATE = 0x0022;
        public const uint WM_CLEAR = 0x0303;
        public const uint WM_CLOSE = 0x0010;
        public const uint WM_CLIPBOARDUPDATE = 0x031D;
        public const uint WM_COMMAND = 0x0111;
        public const uint WM_COMPACTING = 0x0041;
        public const uint WM_COMPAREITEM = 0x0039;
        public const uint WM_CONTEXTMENU = 0x007B;
        public const uint WM_COPY = 0x0301;
        public const uint WM_COPYDATA = 0x004A;
        public const uint WM_CREATE = 0x0001;
        public const uint WM_CTLCOLORBTN = 0x0135;
        public const uint WM_CTLCOLORDLG = 0x0136;
        public const uint WM_CTLCOLOREDIT = 0x0133;
        public const uint WM_CTLCOLORLISTBOX = 0x0134;
        public const uint WM_CTLCOLORMSGBOX = 0x0132;
        public const uint WM_CTLCOLORSCROLLBAR = 0x0137;
        public const uint WM_CTLCOLORSTATIC = 0x0138;
        public const uint WM_CUT = 0x0300;
        public const uint WM_DEADCHAR = 0x0103;
        public const uint WM_DELETEITEM = 0x002D;
        public const uint WM_DESTROY = 0x0002;
        public const uint WM_DESTROYCLIPBOARD = 0x0307;
        public const uint WM_DEVICECHANGE = 0x0219;
        public const uint WM_DEVMODECHANGE = 0x001B;
        public const uint WM_DISPLAYCHANGE = 0x007E;
        public const uint WM_DRAWCLIPBOARD = 0x0308;
        public const uint WM_DRAWITEM = 0x002B;
        public const uint WM_DROPFILES = 0x0233;
        public const uint WM_ENABLE = 0x000A;
        public const uint WM_ENDSESSION = 0x0016;
        public const uint WM_ENTERIDLE = 0x0121;
        public const uint WM_ENTERMENULOOP = 0x0211;
        public const uint WM_ENTERSIZEMOVE = 0x0231;
        public const uint WM_ERASEBKGND = 0x0014;
        public const uint WM_EXITMENULOOP = 0x0212;
        public const uint WM_EXITSIZEMOVE = 0x0232;
        public const uint WM_FONTCHANGE = 0x001D;
        public const uint WM_GETDLGCODE = 0x0087;
        public const uint WM_GETFONT = 0x0031;
        public const uint WM_GETHOTKEY = 0x0033;
        public const uint WM_GETICON = 0x007F;
        public const uint WM_GETMINMAXINFO = 0x0024;
        public const uint WM_GETOBJECT = 0x003D;
        public const uint WM_GETTEXT = 0x000D;
        public const uint WM_GETTEXTLENGTH = 0x000E;
        public const uint WM_HANDHELDFIRST = 0x0358;
        public const uint WM_HANDHELDLAST = 0x035F;
        public const uint WM_HELP = 0x0053;
        public const uint WM_HOTKEY = 0x0312;
        public const uint WM_HSCROLL = 0x0114;
        public const uint WM_HSCROLLCLIPBOARD = 0x030E;
        public const uint WM_ICONERASEBKGND = 0x0027;
        public const uint WM_IME_CHAR = 0x0286;
        public const uint WM_IME_COMPOSITION = 0x010F;
        public const uint WM_IME_COMPOSITIONFULL = 0x0284;
        public const uint WM_IME_CONTROL = 0x0283;
        public const uint WM_IME_ENDCOMPOSITION = 0x010E;
        public const uint WM_IME_KEYDOWN = 0x0290;
        public const uint WM_IME_KEYLAST = 0x010F;
        public const uint WM_IME_KEYUP = 0x0291;
        public const uint WM_IME_NOTIFY = 0x0282;
        public const uint WM_IME_REQUEST = 0x0288;
        public const uint WM_IME_SELECT = 0x0285;
        public const uint WM_IME_SETCONTEXT = 0x0281;
        public const uint WM_IME_STARTCOMPOSITION = 0x010D;
        public const uint WM_INITDIALOG = 0x0110;
        public const uint WM_INITMENU = 0x0116;
        public const uint WM_INITMENUPOPUP = 0x0117;
        public const uint WM_INPUTLANGCHANGE = 0x0051;
        public const uint WM_INPUTLANGCHANGEREQUEST = 0x0050;
        public const uint WM_KEYDOWN = 0x0100;
        public const uint WM_KEYFIRST = 0x0100;
        public const uint WM_KEYLAST = 0x0108;
        public const uint WM_KEYUP = 0x0101;
        public const uint WM_KILLFOCUS = 0x0008;
        public const uint WM_LBUTTONDBLCLK = 0x0203;
        public const uint WM_LBUTTONDOWN = 0x0201;
        public const uint WM_LBUTTONUP = 0x0202;
        public const uint WM_MBUTTONDBLCLK = 0x0209;
        public const uint WM_MBUTTONDOWN = 0x0207;
        public const uint WM_MBUTTONUP = 0x0208;
        public const uint WM_MDIACTIVATE = 0x0222;
        public const uint WM_MDICASCADE = 0x0227;
        public const uint WM_MDICREATE = 0x0220;
        public const uint WM_MDIDESTROY = 0x0221;
        public const uint WM_MDIGETACTIVE = 0x0229;
        public const uint WM_MDIICONARRANGE = 0x0228;
        public const uint WM_MDIMAXIMIZE = 0x0225;
        public const uint WM_MDINEXT = 0x0224;
        public const uint WM_MDIREFRESHMENU = 0x0234;
        public const uint WM_MDIRESTORE = 0x0223;
        public const uint WM_MDISETMENU = 0x0230;
        public const uint WM_MDITILE = 0x0226;
        public const uint WM_MEASUREITEM = 0x002C;
        public const uint WM_MENUCHAR = 0x0120;
        public const uint WM_MENUCOMMAND = 0x0126;
        public const uint WM_MENUDRAG = 0x0123;
        public const uint WM_MENUGETOBJECT = 0x0124;
        public const uint WM_MENURBUTTONUP = 0x0122;
        public const uint WM_MENUSELECT = 0x011F;
        public const uint WM_MOUSEACTIVATE = 0x0021;
        public const uint WM_MOUSEFIRST = 0x0200;
        public const uint WM_MOUSEHOVER = 0x02A1;
        public const uint WM_MOUSELAST = 0x020D;
        public const uint WM_MOUSELEAVE = 0x02A3;
        public const uint WM_MOUSEMOVE = 0x0200;
        public const uint WM_MOUSEWHEEL = 0x020A;
        public const uint WM_MOUSEHWHEEL = 0x020E;
        public const uint WM_MOVE = 0x0003;
        public const uint WM_MOVING = 0x0216;
        public const uint WM_NCACTIVATE = 0x0086;
        public const uint WM_NCCALCSIZE = 0x0083;
        public const uint WM_NCCREATE = 0x0081;
        public const uint WM_NCDESTROY = 0x0082;
        public const uint WM_NCHITTEST = 0x0084;
        public const uint WM_NCLBUTTONDBLCLK = 0x00A3;
        public const uint WM_NCLBUTTONDOWN = 0x00A1;
        public const uint WM_NCLBUTTONUP = 0x00A2;
        public const uint WM_NCMBUTTONDBLCLK = 0x00A9;
        public const uint WM_NCMBUTTONDOWN = 0x00A7;
        public const uint WM_NCMBUTTONUP = 0x00A8;
        public const uint WM_NCMOUSEHOVER = 0x02A0;
        public const uint WM_NCMOUSELEAVE = 0x02A2;
        public const uint WM_NCMOUSEMOVE = 0x00A0;
        public const uint WM_NCPAINT = 0x0085;
        public const uint WM_NCRBUTTONDBLCLK = 0x00A6;
        public const uint WM_NCRBUTTONDOWN = 0x00A4;
        public const uint WM_NCRBUTTONUP = 0x00A5;
        public const uint WM_NCXBUTTONDBLCLK = 0x00AD;
        public const uint WM_NCXBUTTONDOWN = 0x00AB;
        public const uint WM_NCXBUTTONUP = 0x00AC;
        public const uint WM_NCUAHDRAWCAPTION = 0x00AE;
        public const uint WM_NCUAHDRAWFRAME = 0x00AF;
        public const uint WM_NEXTDLGCTL = 0x0028;
        public const uint WM_NEXTMENU = 0x0213;
        public const uint WM_NOTIFY = 0x004E;
        public const uint WM_NOTIFYFORMAT = 0x0055;
        public const uint WM_NULL = 0x0000;
        public const uint WM_PAINT = 0x000F;
        public const uint WM_PAINTCLIPBOARD = 0x0309;
        public const uint WM_PAINTICON = 0x0026;
        public const uint WM_PALETTECHANGED = 0x0311;
        public const uint WM_PALETTEISCHANGING = 0x0310;
        public const uint WM_PARENTNOTIFY = 0x0210;
        public const uint WM_PASTE = 0x0302;
        public const uint WM_PENWINFIRST = 0x0380;
        public const uint WM_PENWINLAST = 0x038F;
        public const uint WM_POWER = 0x0048;
        public const uint WM_POWERBROADCAST = 0x0218;
        public const uint WM_PRINT = 0x0317;
        public const uint WM_PRINTCLIENT = 0x0318;
        public const uint WM_QUERYDRAGICON = 0x0037;
        public const uint WM_QUERYENDSESSION = 0x0011;
        public const uint WM_QUERYNEWPALETTE = 0x030F;
        public const uint WM_QUERYOPEN = 0x0013;
        public const uint WM_QUEUESYNC = 0x0023;
        public const uint WM_QUIT = 0x0012;
        public const uint WM_RBUTTONDBLCLK = 0x0206;
        public const uint WM_RBUTTONDOWN = 0x0204;
        public const uint WM_RBUTTONUP = 0x0205;
        public const uint WM_RENDERALLFORMATS = 0x0306;
        public const uint WM_RENDERFORMAT = 0x0305;
        public const uint WM_SETCURSOR = 0x0020;
        public const uint WM_SETFOCUS = 0x0007;
        public const uint WM_SETFONT = 0x0030;
        public const uint WM_SETHOTKEY = 0x0032;
        public const uint WM_SETICON = 0x0080;
        public const uint WM_SETREDRAW = 0x000B;
        public const uint WM_SETTEXT = 0x000C;
        public const uint WM_SETTINGCHANGE = 0x001A;
        public const uint WM_SHOWWINDOW = 0x0018;
        public const uint WM_SIZE = 0x0005;
        public const uint WM_SIZECLIPBOARD = 0x030B;
        public const uint WM_SIZING = 0x0214;
        public const uint WM_SPOOLERSTATUS = 0x002A;
        public const uint WM_STYLECHANGED = 0x007D;
        public const uint WM_STYLECHANGING = 0x007C;
        public const uint WM_SYNCPAINT = 0x0088;
        public const uint WM_SYSCHAR = 0x0106;
        public const uint WM_SYSCOLORCHANGE = 0x0015;
        public const uint WM_SYSCOMMAND = 0x0112;
        public const uint WM_SYSDEADCHAR = 0x0107;
        public const uint WM_SYSKEYDOWN = 0x0104;
        public const uint WM_SYSKEYUP = 0x0105;
        public const uint WM_TCARD = 0x0052;
        public const uint WM_TIMECHANGE = 0x001E;
        public const uint WM_TIMER = 0x0113;
        public const uint WM_UNDO = 0x0304;
        public const uint WM_UNINITMENUPOPUP = 0x0125;
        public const uint WM_USER = 0x0400;
        public const uint WM_USERCHANGED = 0x0054;
        public const uint WM_VKEYTOITEM = 0x002E;
        public const uint WM_VSCROLL = 0x0115;
        public const uint WM_VSCROLLCLIPBOARD = 0x030A;
        public const uint WM_WINDOWPOSCHANGED = 0x0047;
        public const uint WM_WINDOWPOSCHANGING = 0x0046;
        public const uint WM_WININICHANGE = 0x001A;
        public const uint WM_XBUTTONDBLCLK = 0x020D;
        public const uint WM_XBUTTONDOWN = 0x020B;
        public const uint WM_XBUTTONUP = 0x020C;

        #endregion

        #region STRUCT

        [StructLayout(LayoutKind.Sequential)]
        private struct MouseHookStructEx
        {
            public readonly MOUSEHOOKSTRUCT mouseHookStruct;
            public readonly int MouseData;
        }

        public struct RECT
        {
            public int left;

            public int top;

            public int right;

            public int bottom;
        }

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

        [StructLayout(LayoutKind.Sequential)]
        public struct MOUSEHOOKSTRUCT
        {
            public Point pt;
            public IntPtr hwnd;
            public uint wHitTestCode;
            public IntPtr dwExtraInfo;
        }

        #endregion
    }
}