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

namespace PamhagenSysCtrl.Helpers.Pipeline {
    public class Auger {

        public double CenterX { get; set; }
        public double CenterY { get; set; }
        public double Width { get; set; }
        public double Height { get; set; }

        public bool IsActive {
            set {
                if (value) {
                    _storyboard?.Resume();
                } else {
                    _storyboard?.Pause();
                }
            }
        }

        private Polyline? _polyline;
        private Storyboard? _storyboard;

        public Auger(double x, double y, double width, double height) {
            CenterX = x;
            CenterY = y;
            Width = width;
            Height = height;
        }

        public void Draw(Canvas canvas) {
            var d = Height / 4;
            int n = (int)(Width / d / 4) + 2;
            _polyline = new Polyline() {
                Points = [.. Enumerable.Range(0, n).SelectMany(i => new List<Point>() {
                    new(i * 4 * d, Height / 2), new((i * 4 + 1) * d, 0),
                    new((i * 4 + 2) * d, Height / 2), new((i * 4 + 3) * d, Height)
                }), new(n * 4 * d, Height / 2), new(0, Height / 2)],
                Fill = Brushes.Transparent,
                Stroke = Brushes.Black,
                StrokeThickness = 2,
            };
            _polyline.SetValue(Canvas.LeftProperty, 0.0);

            var slideLeft = new DoubleAnimation {
                From = 0,
                To = -d * 4,
                Duration = new Duration(TimeSpan.FromSeconds(1)),
                RepeatBehavior = RepeatBehavior.Forever,
            };
            _storyboard = new Storyboard();
            _storyboard.Children.Add(slideLeft);
            Storyboard.SetTarget(slideLeft, _polyline);
            Storyboard.SetTargetProperty(slideLeft, new PropertyPath(Canvas.LeftProperty));
            var clipCanvas = new Canvas() {
                Width = Width,
                Height = Height,
                ClipToBounds = true,
            };
            clipCanvas.SetValue(Canvas.TopProperty, CenterY - Height / 2);
            clipCanvas.SetValue(Canvas.LeftProperty, CenterX - Width / 2);
            clipCanvas.Children.Add(_polyline);
            canvas.Children.Add(clipCanvas);
            _storyboard.Begin();
            _storyboard.Pause();
        }
    }
}