@namespace Sandbox
@inherits Panel
@using Sandbox.UI
@using System
@implements IRichTextPanel
@attribute [RichTextPanel( @"\[color:([^\]]+)\](.*?)\[/color\]", UseCaptureGroup = false )]

<root class="richtext-color-token">
	<label style="color: @ParsedColor.Rgba;">@DisplayText</label>
</root>

@code
{
	public float? ImageSize { get; set; }

	string DisplayText = "";
	Color ParsedColor = Color.White;

	public void ParseRichText( string text )
	{
		const string prefix = "[color:";
		const string suffix = "[/color]";

		DisplayText = text;
		ParsedColor = Color.White;

		if ( string.IsNullOrWhiteSpace( text ) || !text.StartsWith( prefix ) || !text.EndsWith( suffix ) )
			return;

		var colorEndIndex = text.IndexOf( ']' );
		if ( colorEndIndex <= prefix.Length )
			return;

		var colorText = text[prefix.Length..colorEndIndex];
		DisplayText = text[(colorEndIndex + 1)..^suffix.Length];

		try
		{
			ParsedColor = Color.Parse( colorText ) ?? Color.White;
		}
		catch
		{
			ParsedColor = Color.White;
		}
	}

	protected override int BuildHash()
	{
		return HashCode.Combine( DisplayText, ParsedColor );
	}
}