using Pine;
using UnityEngine;

namespace PineDocs.Examples
{
    public static class PineSpring
    {
        public static View Create()
        {
            var onRight = P.Source(false);
            var target = P.Derive(() => new Vector2(onRight.Value ? 180 : -180, 0));
            var position = P.Spring(() => target.Value, period: .45, dampingRatio: .75);
            return P.Vertical(
                    spacing: 8,
                    childControlWidth: true,
                    childControlHeight: true,
                    childForceExpandHeight: false,
                    sizeDelta: new Vector2(520, 240)
                )
                .With(
                    P.Text("Spring motion").With(P.LayoutElement(preferredHeight: 40)),
                    P.Frame()
                        .With(
                            P.LayoutElement(preferredHeight: 80),
                            P.Image(
                                color: Color.green,
                                anchoredPosition: position,
                                sizeDelta: new Vector2(24, 24)
                            )
                        ),
                    P.Text(() => $"Target: {(onRight.Value ? "right" : "left")}")
                        .With(P.LayoutElement(preferredHeight: 40)),
                    P.Button(
                            () => onRight.Value ? "Move left" : "Move right",
                            onClick: () => onRight.Value = !onRight.Value
                        )
                        .With(P.LayoutElement(preferredHeight: 40))
                );
        }
    }
}