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

namespace PamhagenSysCtrl.Helpers.Pipeline {
    public class EncasedAuger : INode {

        public const double WIDTH = 80;
        public const double HEIGHT = 20;

        public double CenterX { get; set; }
        public double CenterY { get; set; }
        public double Angle { get; set; }
        public string Label { get; set; }
        public ISet<IEdge> Inputs { get; init; }
        public ISet<IEdge> Outputs { get; init; }

        public bool IsActive {
            get => _active;
            set {
                _active = value;
                _auger?.IsActive = value;
            }
        }

        private bool _active;
        private Shape? _inner;
        private Shape? _outer;
        private Auger? _auger;
        private TextBlock? _text;

        public EncasedAuger(string label, double x, double y, double angle = 0) {
            CenterX = x;
            CenterY = y;
            Label = label;
            Angle = angle;
            Inputs = new HashSet<IEdge>();
            Outputs = new HashSet<IEdge>();
        }

        public void Draw(Canvas canvas) {
            var c = new Canvas() {
                RenderTransform = new RotateTransform(Angle, WIDTH / 2, HEIGHT / 2),
            };
            _outer = new Rectangle() {
                Width = WIDTH,
                Height = HEIGHT,
                Fill = Brushes.Black,
            };
            _inner = new Rectangle() {
                Width = WIDTH,
                Height = HEIGHT - 4,
                Fill = Brushes.WhiteSmoke,
            };
            c.SetValue(Canvas.LeftProperty, CenterX - WIDTH / 2);
            c.SetValue(Canvas.TopProperty, CenterY - HEIGHT / 2);
            _inner.SetValue(Canvas.TopProperty, 2.0);
            c.Children.Add(_outer);
            c.Children.Add(_inner);
            canvas.Children.Add(c);

            _text = new() {
                Text = Label,
                Width = WIDTH,
                FontSize = 12,
                TextAlignment = TextAlignment.Center,
                VerticalAlignment = VerticalAlignment.Center,
            };
            _text.SetValue(Canvas.LeftProperty, CenterX - WIDTH / 2);
            _text.SetValue(Canvas.TopProperty, CenterY + HEIGHT / 2);
            canvas.Children.Add(_text);

            _auger = new Auger(CenterX, CenterY, WIDTH, 12, Angle);
            _auger.Draw(canvas);
        }

        public bool IsInside(double x, double y) {
            return Math.Sqrt(Math.Pow(CenterX - x, 2) + Math.Pow(CenterY - y, 2)) <= WIDTH / 2;
        }

        public void Update(bool isHovering, bool isPressed) {
            _inner?.Fill =
                IsActive && isHovering && isPressed ? PamhagenBrushes.Red :
                IsActive && isHovering ? PamhagenBrushes.Red :
                !IsActive && isHovering && isPressed ? PamhagenBrushes.Green :
                !IsActive && isHovering ? PamhagenBrushes.Green :
                IsActive ? PamhagenBrushes.Green :
                Brushes.WhiteSmoke;
        }
    }
}