using Sandbox;
using Editor;
using System;

/// <summary>
/// Help → About HotCode: the chili, the wordmark, and what HotCode does.
/// </summary>
public class AboutWindow : Window
{
	private static AboutWindow _open;

	public static void Open()
	{
		if ( _open.IsValid() )
		{
			_open.Raise();
			return;
		}

		_open = new AboutWindow();
	}

	private AboutWindow()
	{
		WindowTitle = "About HotCode";
		SetWindowIcon( HotCodeLogo.WindowIcon );
		DeleteOnClose = true;
		Size = new Vector2( 460, 420 );
		MinimumSize = Size;

		Canvas = new Widget( this );
		Canvas.OnPaintOverride = () =>
		{
			Paint.ClearPen();
			Paint.SetBrush( Theme.TabBackground );
			Paint.DrawRect( Canvas.LocalRect );
			return true;
		};

		Canvas.Layout = Layout.Column();
		Canvas.Layout.Margin = 24;
		Canvas.Layout.Spacing = 6;

		var top = Canvas.Layout.AddRow();
		top.AddStretchCell();
		top.Add( new LogoWidget( Canvas, 132, badge: false ) );
		top.AddStretchCell();

		var name = Canvas.Layout.AddRow();
		name.AddStretchCell();
		name.Add( new WordmarkWidget( Canvas, 30 ) );
		name.AddStretchCell();

		AddCentred( "A code editor built right into s&box", Theme.TextLight, 600 );
		Canvas.Layout.AddSpacingCell( 10 );
		Canvas.Layout.AddSeparator( 1, Theme.Border );
		Canvas.Layout.AddSpacingCell( 6 );

		AddCentred( "Autocomplete · Parameter hints · Go to Definition", Theme.Text, 400 );
		AddCentred( "Errors while you type · Live compile results · Hotload", Theme.Text, 400 );

		Canvas.Layout.AddStretchCell();

		var footer = Canvas.Layout.AddRow();
		footer.AddStretchCell();
		footer.Add( new Button.Primary( "Close", "close", Canvas ) { Clicked = () => Close() } );

		Show();
	}

	private void AddCentred( string text, Color colour, int weight )
	{
		var label = Canvas.Layout.Add( new Label( text, Canvas ) );
		label.Alignment = TextFlag.Center;
		label.SetStyles( $"color: {colour.Hex}; font-weight: {weight};" );
	}
}