using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Shapes;

namespace PamhagenSysCtrl.Helpers.Pipeline {
    public class Outlet : IEdge {

        public const double POINT = 16;

        public INode Start => Source;
        public INode End { get; set; }
        public ISource Source { get; set; }
        public bool IsTwoWay => false;
        public bool Orientation { get; set; }
        public Brush? Highlight { get; set; }

        private Polygon? _hopper;
        private Line? _outer1;
        private Line? _outer2;
        private Line? _inner1;
        private Line? _inner2;

        public Outlet(ISource start, INode end) {
            Source = start;
            End = end;
            Orientation = true;
        }

        public void Draw(Canvas canvas) {
            var x1 = Start.CenterX ;
            var y1 = Source.BottomY;
            var x2 = Orientation ? Start.CenterX : End.CenterX;
            var y2 = Orientation ? End.CenterY : Start.CenterY;
            var x3 = End.CenterX;
            var y3 = End.CenterY;
            _hopper = new Polygon() {
                Points = [new(x1 - POINT, y1 - 2), new(x1 + POINT, y1 - 2), new(x1, y1 + POINT)],
                Fill = Brushes.DarkGray,
                Stroke = Brushes.Black,
                StrokeThickness = 2,
            };
            _outer1 = new Line() {
                X1 = x1,
                Y1 = y1,
                X2 = x2,
                Y2 = y2,
                StrokeThickness = 10,
                Stroke = Brushes.Black,
                StrokeStartLineCap = PenLineCap.Round,
                StrokeEndLineCap = PenLineCap.Round,
            };
            _inner1 = new Line() {
                X1 = x1,
                Y1 = y1,
                X2 = x2,
                Y2 = y2,
                StrokeThickness = 6,
                Stroke = Brushes.DarkGray,
                StrokeStartLineCap = PenLineCap.Round,
                StrokeEndLineCap = PenLineCap.Round,
            };
            _outer2 = new Line() {
                X1 = x2,
                Y1 = y2,
                X2 = x3,
                Y2 = y3,
                StrokeThickness = 10,
                Stroke = Brushes.Black,
                StrokeStartLineCap = PenLineCap.Round,
                StrokeEndLineCap = PenLineCap.Round,
            };
            _inner2 = new Line() {
                X1 = x2,
                Y1 = y2,
                X2 = x3,
                Y2 = y3,
                StrokeThickness = 6,
                Stroke = Brushes.DarkGray,
                StrokeStartLineCap = PenLineCap.Square,
                StrokeEndLineCap = PenLineCap.Square,
            };
            canvas.Children.Add(_outer1);
            canvas.Children.Add(_outer2);
            canvas.Children.Add(_hopper);
            canvas.Children.Add(_inner1);
            canvas.Children.Add(_inner2);
        }

        public bool Update(double x, double y) {
            _inner1?.Stroke = Highlight ?? Brushes.DarkGray;
            _inner2?.Stroke = Highlight ?? Brushes.DarkGray;
            _hopper?.Fill = Highlight ?? Brushes.DarkGray;
            return false;
        }
    }
}