using System;
using System.Windows.Forms;

namespace NumpadMonitor
{
    public class KeySet
    {
        internal readonly static KeyInfo[] Numpad = new KeyInfo[] {
          new KeyInfo(Keys.NumPad0),
          new KeyInfo(Keys.NumPad1),
          new KeyInfo(Keys.NumPad2),
          new KeyInfo(Keys.NumPad3),
          new KeyInfo(Keys.NumPad4),
          new KeyInfo(Keys.NumPad5),
          new KeyInfo(Keys.NumPad6),
          new KeyInfo(Keys.NumPad7),
          new KeyInfo(Keys.NumPad8),
          new KeyInfo(Keys.NumPad9),
          new KeyInfo(Keys.Divide),
          new KeyInfo(Keys.Multiply),
          new KeyInfo(Keys.Subtract),
          new KeyInfo(Keys.Add),
          new KeyInfo(Keys.Enter),
          new KeyInfo(Keys.Decimal),
          new KeyInfo(Keys.Delete),
          new KeyInfo(Keys.End)
        };

        internal readonly static KeyInfo[] Alternative = new KeyInfo[] {
          new KeyInfo(Keys.F13, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Shift})),
          new KeyInfo(Keys.F14, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Shift})),
          new KeyInfo(Keys.F15, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Shift})),
          new KeyInfo(Keys.F16, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Shift})),
          new KeyInfo(Keys.F17, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Shift})),
          new KeyInfo(Keys.F18, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Shift})),
          new KeyInfo(Keys.F19, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Shift})),
          new KeyInfo(Keys.F20, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Shift})),
          new KeyInfo(Keys.F21, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Shift})),
          new KeyInfo(Keys.F22, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Shift})),
          new KeyInfo(Keys.F23, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Shift})),
          new KeyInfo(Keys.F24, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Shift})),
          new KeyInfo(Keys.F13, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Ctrl})),
          new KeyInfo(Keys.F14, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Ctrl})),
          new KeyInfo(Keys.F15, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Ctrl})),
          new KeyInfo(Keys.F16, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Ctrl})),
          new KeyInfo(Keys.F17, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Ctrl})),
          new KeyInfo(Keys.F18, KeyInfo.GetModifierInt(new Modifier[]{Modifier.Ctrl}))
        };

        public static KeyInfo AlternativeToNumpad(KeyInfo key)
        {
            int index = Array.FindIndex(Alternative, x => x.Equals(key));
            return Numpad[index];
        }
    }
}