using Editor;
using Sandbox;

namespace Ardi;

public class AudioScrubber : GraphicsItem
{
	private readonly AudioTimelineView TimelineView;

	public AudioScrubber( AudioTimelineView view ) : base( null )
	{
		TimelineView = view;
		ZIndex = -1f;
		HoverEvents = true;
		Cursor = CursorShape.OpenHand;
		Movable = true;
		Selectable = true;
	}

	protected override void OnPaint()
	{
		base.OnPaint();

		Paint.Antialiasing = false;
		Paint.ClearPen();
		var color = Theme.Green.WithAlpha( 0.7f );
		Paint.SetBrush( color );

		var top = new Vector2( 0f, Theme.RowHeight / 2f + 1f );
		var size = new Vector2( LocalRect.Width, Theme.RowHeight / 2f );
		var rect = new Rect( top, size );

		var polygon = new Vector2[]
		{
				rect.TopLeft,
				rect.TopRight,
				rect.BottomRight - new Vector2( 0f, 4f ),
				rect.Center.WithY( rect.Bottom ),
				rect.BottomLeft - new Vector2( 0f, 4f )
		};

		Paint.DrawPolygon( polygon );

		color = Theme.Green.WithAlpha( 0.7f );
		Paint.SetPen( color );
		var lineStart = new Vector2( 4f, Theme.RowHeight + 1f );
		var lineEnd = new Vector2( 4f, LocalRect.Bottom );
		Paint.DrawLine( lineStart, lineEnd );
	}

	protected override void OnMousePressed( GraphicsMouseEvent e )
	{
		base.OnMousePressed( e );
		TimelineView.Scrubbing = true;
	}

	protected override void OnMouseReleased( GraphicsMouseEvent e )
	{
		base.OnMouseReleased( e );
		TimelineView.Scrubbing = false;
	}

	protected override void OnMoved()
	{
		base.OnMoved();
		TimelineView.Scrubbing = true;
		TimelineView.MoveScrubber( Position.x, centreOn: false );
	}
}