#region --- License ---
/* Copyright (c) 2007 Stefanos Apostolopoulos
 * See license.txt for license info
 */
#endregion

#region --- Using directives ---

using System;

using OpenTK.Input;
using System.Diagnostics;

#endregion

namespace OpenTK.Input
{
    public class Keyboard : IKeyboard
    {
        //private IKeyboard keyboard;
        private bool[] keys = new bool[(int)Keys.MaxKeys];
        private string description;
        private int numKeys, numFKeys, numLeds;
        private long devID;

        #region --- Constructors ---

        public Keyboard()
        {
            if (Environment.OSVersion.Platform == PlatformID.Win32NT ||
                Environment.OSVersion.Platform == PlatformID.Win32Windows)
            {
                //keyboard = new OpenTK.Platform.Windows.WinRawKeyboard();
            }
            else if (Environment.OSVersion.Platform == PlatformID.Unix ||
                Environment.OSVersion.Platform == (PlatformID)128) // some older versions of Mono reported 128.
            {
                throw new NotImplementedException();
            }
            else
            {
                throw new PlatformNotSupportedException(
                    "Your operating system is not currently supported. We are sorry for the inconvenience."
                );
            }
        }

        #endregion

        #region --- IKeyboard members ---

        public bool this[Keys k]
        {
            get { return keys[(int)k]; }
            internal set
            {
                Debug.Print("OpenTK key {0} {1}.", k, value ? "pressed" : "released");
                keys[(int)k] = value;
            }
        }

        public int NumberOfKeys
        {
            get { return numKeys; }
            internal set { numKeys = value; }
        }

        public int NumberOfFunctionKeys
        {
            get { return numFKeys; }
            internal set { numFKeys = value; }
        }

        public int NumberOfLeds
        {
            get { return numLeds; }
            internal set { numLeds = value; }
        }

        /// <summary>
        /// Device dependent ID.
        /// </summary>
        public long DeviceID
        {
            get { return devID; }
            internal set { devID = value; }
        }

        #endregion

        #region --- IInputDevice Members ---

        public string Description
        {
            get { return description; }
            internal set { description = value; }
        }

        public InputDeviceType DeviceType
        {
            get { return InputDeviceType.Keyboard; }
        }

        #endregion

        public override int GetHashCode()
        {
            //return base.GetHashCode();
            return (int)(numKeys ^ numFKeys ^ numLeds ^ devID.GetHashCode() ^ description.GetHashCode());
        }

        public override string ToString()
        {
            //return base.ToString();
            return String.Format("Keyboard: '{0}', {1} keys, {2} function keys, {3} leds. Device ID: {4}",
                description, NumberOfKeys, NumberOfFunctionKeys, NumberOfLeds, DeviceID);
        }
    }

    #region public enum Keys : int

    /// <summary>
    /// The available keyboard keys.
    /// </summary>
    public enum Keys : int
    {
        // Modifiers
        LeftShift = 0,
        RightShift,
        LeftControl,
        RightControl,
        LeftAlt,
        RightAlt,
        LeftApp,
        RightApp,
        Menu,

        // Function keys (hopefully enough for most keyboards - mine has 26)
        F1, F2, F3, F4,
        F5, F6, F7, F8,
        F9, F10, F11, F12,
        F13, F14, F15, F16,
        F17, F18, F19, F20,
        F21, F22, F23, F24,
        F25, F26, F27, F28,
        F29, F30, F31, F32,

        // Direction arrows
        Up,
        Down,
        Left,
        Right,

        Enter,
        Escape,
        Space,
        Tab,
        Backspace,
        Insert,
        Delete,
        PageUp,
        PageDown,
        Home,
        End,
        CapsLock,
        PrintScreen,
        Pause,
        NumLock,

        // Special keys
        Sleep,
        /*LogOff,
        Help,
        Undo,
        Redo,
        New,
        Open,
        Close,
        Reply,
        Forward,
        Send,
        Spell,
        Save,
        Calculator,
        
        // Folders and applications
        Documents,
        Pictures,
        Music,
        MediaPlayer,
        Mail,
        Browser,
        Messenger,
        
        // Multimedia keys
        Mute,
        PlayPause,
        Stop,
        VolumeUp,
        VOlumeDown,
        PreviousTrack,
        NextTrack,*/

        // Keypad keys
        Keypad0,
        Keypad1,
        Keypad2,
        Keypad3,
        Keypad4,
        Keypad5,
        Keypad6,
        Keypad7,
        Keypad8,
        Keypad9,
        KeypadDivide,
        KeypadMultiply,
        KeypadSubtract,
        KeypadAdd,
        KeypadDecimal,
        //KeypadEnter,

        // Letters
        A, B, C, D, E, F, G,
        H, I, J, K, L, M, N,
        O, P, Q, R, S, T, U,
        V, W, X, Y, Z,

        // Numbers
        Number0,
        Number1,
        Number2,
        Number3,
        Number4,
        Number5,
        Number6,
        Number7,
        Number8,
        Number9,

        // Symbols
        Tilde,
        Minus,
        //Equal,
        Plus,
        LeftBracket,
        RightBracket,
        Semicolon,
        Quote,
        Comma,
        Period,
        Slash,
        BackSlash,

        MaxKeys
    }

    #endregion
}