Input.cs

using System.Threading;

namespace MUI;

public static class Input
{
	private static uint selection;
	private static bool selected;

	public static uint Selection{ get => selection; set => selection = value; }
	public static bool Selected { get => selected; set => selected = value; }

	/// <summary> Processes user input for navigation. </summary>		
	public static void 	Handle(){
		if(Console.KeyAvailable)
		{
			ConsoleKey Key = Console.ReadKey(true).Key;
		
			switch(Key)
			{
				default: break;
				case ConsoleKey.UpArrow: 	
				case ConsoleKey.W: 			NavUp();	break;
				
				case ConsoleKey.DownArrow: 	
				case ConsoleKey.S: 			NavDown();	break;
				
				case ConsoleKey.LeftArrow: 	
				case ConsoleKey.A: 			
				case ConsoleKey.Backspace:	
				case ConsoleKey.D0:			NavBack();	break;

				case ConsoleKey.RightArrow: 
				case ConsoleKey.D: 			
				case ConsoleKey.Spacebar:	
				case ConsoleKey.Enter: 		NavEnter();	break;
	
				case ConsoleKey.Escape:		Core.Running = false; break;

				case ConsoleKey.D1:			Selection = 0; break;
				case ConsoleKey.D2:			Selection = 1; break;
				case ConsoleKey.D3:			Selection = 2; break;
				case ConsoleKey.D4:			Selection = 3; break;
				case ConsoleKey.D5:			Selection = 4; break;
				case ConsoleKey.D6:			Selection = 5; break;
				case ConsoleKey.D7:			Selection = 6; break;
				case ConsoleKey.D8:			Selection = 7; break;
				case ConsoleKey.D9:			Selection = 8; break;
			}
		}
		else
		{
			Thread.Sleep(100);
		}

		if(Selected && (Core.State.Options.Count>0))
		{
			try{
				Core.State.Options[(int)Selection%Core.State.Options.Count].Function();
			}catch (Exception e){
				TUI.Message($"Enter Selection Failed.\n{e}",3);
				Thread.Sleep(500);
			}
			Selected = false;
		}
	}

	/// <summary> Decrements selection counter. </summary>
	private static void NavUp(){ 
		if(Selection>0)
		{
			Selection--;
		}
	}
	
	/// <summary> Increments selection counter. </summary>
	private static void NavDown(){
		Selection++; 
	}
	
	/// <summary> Resets selection, and sets current state to root. </summary>
	private static void NavBack(){
		Selection= 0;
		Core.State = Core.Root;
	}
	
	/// <summary> Sets selected true. </summary>
	private static void NavEnter(){
		Selected = true; 
	}
}