using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Splines;
namespace BITKit.Spline
{
    public interface ISplineContainer
    {
        Transform Position { get; }
        Transform TangentIn { get; }
        Transform TangentOut { get; }
    }
    [System.Serializable]
    public class BasicSplineContainer : ISplineContainer
    {
        public Transform m_transform;
        public Transform m_tangentIn;
        public Transform m_tangentOut;
        public Transform Position => m_transform;
        public Transform TangentIn => m_tangentIn;
        public Transform TangentOut => m_tangentOut;
    }
    [ExecuteAlways]
    public class UnitySplineCreator : MonoBehaviour
    {
        [SerializeReference, SubclassSelector] public List<ISplineContainer> splines = new();
        public SplineContainer container;
        public SplineExtrude extrude;
        [Header(Constant.Header.Settings)]
        public int updateTimes;
        void Update()
        {
            UnityEngine.Splines.Spline spline = new();
            foreach (var x in splines)
            {
                spline.Add(new BezierKnot()
                {
                    Position = x.Position.position,
                    Rotation = x.Position.rotation,
                    TangentIn = x.TangentIn ? x.TangentIn.position : Vector3.zero,
                    TangentOut = x.TangentOut ? x.TangentOut.position : Vector3.zero,
                });
            }
            container.Spline = spline;
            extrude.Rebuild();
            updateTimes++;
        }
    }
}