using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Text;

namespace MacroBoard.Native
{
    public static class Messages
    {
        [DllImport("user32.dll")]
        public static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);

        [return: MarshalAs(UnmanagedType.Bool)]
        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        public static extern bool PostMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);



        [DllImport("user32.dll", SetLastError = true)]
        public static extern bool PeekMessage(
                   out NativeMessage lpMsg,
                   IntPtr hwnd,
                   uint wMsgFilterMin,
                   uint wMsgFilterMax,
                   uint wRemoveMsg);


        [StructLayout(LayoutKind.Sequential)]
        public struct NativeMessage
        {
            public IntPtr handle;
            public uint msg;
            public IntPtr wParam;
            public IntPtr lParam;
            public uint time;
            public System.Drawing.Point p;
        }

        [Flags]
        public enum PeekMessageParams : uint
        {
            PM_NOREMOVE = 0x0000,
            PM_REMOVE = 0x0001,
            PM_NOYIELD = 0x0002,
            PM_QS_INPUT = QueueStatusFlags.QS_INPUT << 16,
            PM_QS_POSTMESSAGE = (QueueStatusFlags.QS_POSTMESSAGE | QueueStatusFlags.QS_HOTKEY | QueueStatusFlags.QS_TIMER) << 16,
            PM_QS_PAINT = QueueStatusFlags.QS_PAINT << 16,
            PM_QS_SENDMESSAGE = QueueStatusFlags.QS_SENDMESSAGE << 16
        }

        [Flags]
        public enum QueueStatusFlags : uint
        {
            QS_KEY = 0x1,
            QS_MOUSEMOVE = 0x2,
            QS_MOUSEBUTTON = 0x4,
            QS_MOUSE = (QS_MOUSEMOVE | QS_MOUSEBUTTON),
            QS_INPUT = (QS_MOUSE | QS_KEY),
            QS_POSTMESSAGE = 0x8,
            QS_TIMER = 0x10,
            QS_PAINT = 0x20,
            QS_SENDMESSAGE = 0x40,
            QS_HOTKEY = 0x80,
            QS_REFRESH = (QS_HOTKEY | QS_KEY | QS_MOUSEBUTTON | QS_PAINT),
            QS_ALLEVENTS = (QS_INPUT | QS_POSTMESSAGE | QS_TIMER | QS_PAINT | QS_HOTKEY),
            QS_ALLINPUT = (QS_SENDMESSAGE | QS_PAINT | QS_TIMER | QS_POSTMESSAGE | QS_MOUSEBUTTON | QS_MOUSEMOVE | QS_HOTKEY | QS_KEY),
            QS_ALLPOSTMESSAGE = 0x100,
            QS_RAWINPUT = 0x400
        }
        

        public enum AppComandCode : uint
        {
            BASS_BOOST = 20,
            BASS_DOWN = 19,
            BASS_UP = 21,
            BROWSER_BACKWARD = 1,
            BROWSER_FAVORITES = 6,
            BROWSER_FORWARD = 2,
            BROWSER_HOME = 7,
            BROWSER_REFRESH = 3,
            BROWSER_SEARCH = 5,
            BROWSER_STOP = 4,
            LAUNCH_APP1 = 17,
            LAUNCH_APP2 = 18,
            LAUNCH_MAIL = 15,
            LAUNCH_MEDIA_SELECT = 16,
            MEDIA_NEXTTRACK = 11,
            MEDIA_PLAY_PAUSE = 14,
            MEDIA_PREVIOUSTRACK = 12,
            MEDIA_STOP = 13,
            TREBLE_DOWN = 22,
            TREBLE_UP = 23,
            VOLUME_DOWN = 9,
            VOLUME_MUTE = 8,
            VOLUME_UP = 10,
            MICROPHONE_VOLUME_MUTE = 24,
            MICROPHONE_VOLUME_DOWN = 25,
            MICROPHONE_VOLUME_UP = 26,
            CLOSE = 31,
            COPY = 36,
            CORRECTION_LIST = 45,
            CUT = 37,
            DICTATE_OR_COMMAND_CONTROL_TOGGLE = 43,
            FIND = 28,
            FORWARD_MAIL = 40,
            HELP = 27,
            MEDIA_CHANNEL_DOWN = 52,
            MEDIA_CHANNEL_UP = 51,
            MEDIA_FASTFORWARD = 49,
            MEDIA_PAUSE = 47,
            MEDIA_PLAY = 46,
            MEDIA_RECORD = 48,
            MEDIA_REWIND = 50,
            MIC_ON_OFF_TOGGLE = 44,
            NEW = 29,
            OPEN = 30,
            PASTE = 38,
            PRINT = 33,
            REDO = 35,
            REPLY_TO_MAIL = 39,
            SAVE = 32,
            SEND_MAIL = 41,
            SPELL_CHECK = 42,
            UNDO = 34,
            DELETE = 53,
            DWM_FLIP3D = 54
        }
    }

        public static class Libraries
    {
        [DllImport("kernel32", SetLastError = true, CharSet = CharSet.Ansi)]
        public static extern IntPtr LoadLibrary([MarshalAs(UnmanagedType.LPStr)] string lpFileName);

        [DllImport("kernel32", CharSet = CharSet.Ansi, ExactSpelling = true, SetLastError = true)]
        public static extern IntPtr GetProcAddress(IntPtr hModule, string procName);
    }

    public static class Windows
    {
        [DllImport("user32.dll")]
        public static extern IntPtr FindWindow(string strClassName, string strWindowName);

        [DllImport("user32.dll", SetLastError = true)]
        public static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint processId);
    }

    public static class Keyboards
    {
        public const uint KEYEVENTF_EXTENDEDKEY = 0x0001;
        public const uint KEYEVENTF_KEYUP = 0x0002;


        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.Winapi)]
        public static extern short GetKeyState(int keyCode);

        public static bool IsNumLockEnabled() => (((ushort)GetKeyState(0x90)) & 0xFFFF) != 0;

        public enum KeyState
        {
            Down,
            Up
        }

        //There is a built in System.Windows.Input version of this that has a Toggled version, but I am using my own.
        public static KeyState GetKeyState(IntPtr lParam) => (((ulong)lParam & 0x80000000) == 0 ? KeyState.Down : KeyState.Up);

        [DllImport("user32.dll")]
        public static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, int dwExtraInfo);
    }
}