@using Sandbox;
@using Sandbox.UI;
@inherits PanelComponent
@namespace Sandbox

<root>
	<div class="TestArea" style=@writeBgStyle>
		<div class="theDot" style=@writePosStyle></div>
	</div>
</root>

@code
{
	/*
	public enum BgTheme: int {
		Black,
		White,
		Gray,
		Blue,
	};
	*/
	public string[] BgTheme = [
		"background-color:black;",
		"background-color:white;",
		"background-color:red;",
		"background-color:lime;",
		"background-color:blue;",
		"background-color:cyan;",
		"background-color:magenta;",
		"background-color:yellow;",
	];

	[Property] public Vector2 setPos {get;set;} = new Vector2(50,50);
	[Property] public float speed {get;set;} = 50f;
	[Property] public int selectBgTheme {get;set;} = 0;
	[Property] public int selectDotTheme {get;set;} = 1;
	//[Property] public BgTheme selectBgTheme {get;set;} = BgTheme.Black;
	protected int maxBgTheme {get;} = 4;
	protected float _x {get;set;} = 50;
	protected float _y {get;set;} = 50;
	protected string writeBgTheme {get;set;}
	protected string writeDotTheme {get;set;}
	protected string writePosStyle {get;set;}
	protected string writeBgStyle {get;set;}

	// https://www.w3schools.com/css/css_positioning_fixed_absolute.asp
	// https://www.w3schools.com/cs/cs_enums.php
	// https://stackoverflow.com/questions/630803/associating-enums-with-strings-in-c-sharp

	protected override void OnUpdate()
	{
		_x += -Input.AnalogMove.x * Time.Delta * speed;
		_y += -Input.AnalogMove.y * Time.Delta * speed;

		/*
		writeBgTheme = switch(selectBgTheme)
		{
			default:
				"";
				break;
		};
		*/
		if(Input.Pressed("slotNext") || Input.Pressed("Reload"))
		{
			selectBgTheme += 1;
		}
		if(Input.Pressed("slotPrev") || Input.Pressed("Use"))
		{
			selectBgTheme -= 1;
		}
		if(Input.Pressed("attack1"))
		{
			selectDotTheme += 1;
		}
		if(Input.Pressed("attack2"))
		{
			selectDotTheme -= 1;
		}

		/*
		if(selectBgTheme > System.Enum.GetValues(BgTheme).Length())
		{
			selectBgTheme = BgTheme.Black;
		}
		*/
		if(selectBgTheme < 0)
		{
			selectBgTheme = BgTheme.Length - 1;
		}
		if(selectBgTheme > BgTheme.Length-1)
		{
			selectBgTheme = 0;
		}
		if(selectDotTheme < 0)
		{
			selectDotTheme = BgTheme.Length - 1;
		}
		if(selectDotTheme > BgTheme.Length-1)
		{
			selectDotTheme = 0;
		}

		/*
		switch(selectBgTheme)
		{
			case BgTheme.Black:
				writeBgTheme = "background-color:black;";
				break;
			case BgTheme.White:
				writeBgTheme = "background-color:white;";
				break;
			case BgTheme.Gray:
				writeBgTheme = "background-color:gray;";
				break;
			case BgTheme.Blue:
				writeBgTheme = "background-color:blue;";
				break;
			default:
				break;
		}
		*/
		writeBgTheme = BgTheme[selectBgTheme];
		writeDotTheme = BgTheme[selectDotTheme];

		if(_x >= 100) _x = 100;
		if(_x <= 0) _x = 0;
		if(_y >= 100) _y = 100;
		if(_y <= 0) _y = 0;
		setPos = new Vector2(_x,_y);
		writePosStyle = $" top:{setPos.x}%; left:{setPos.y}%; {writeDotTheme}";
		writeBgStyle = $"{writeBgTheme}";
	}

	/// <summary>
	/// the hash determines if the system should be rebuilt. If it changes, it will be rebuilt
	/// </summary>
	protected override int BuildHash() => System.HashCode.Combine( setPos, writePosStyle, writeBgStyle );
}