using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace UDE_HAND_INTERACTION
{
    [System.Serializable]
    public class HandJointsSet
    {
        public HandJointId id;
        public Transform transform;
        public Vector3 rotationOffset;


        public Quaternion RotationOffset
        {
            get
            {
                return Quaternion.Euler(rotationOffset);
            }
        }

        public Quaternion TrackedRotation
        {
            get
            {
                return Quaternion.Inverse(RotationOffset) * transform.localRotation;
            }
        }
    }

    [System.Serializable]
    public class JointCollection
    {
        /// <summary>
        /// List of indices of the joints in the actual rig for quick access
        /// </summary>
        [SerializeField]
        [HideInInspector]
        private int[] _jointIndices = new int[FingersData.HAND_JOINT_IDS.Length];

        /// <summary>
        /// List of joints in the actual rig
        /// </summary>
        [SerializeField]
        [HideInInspector]
        private List<HandJointsSet> _jointSets;

        public JointCollection(List<HandJointsSet> joints)
        {
            _jointSets = joints;
            for (int i = 0; i < FingersData.HAND_JOINT_IDS.Length; i++)
            {
                HandJointId boneId = FingersData.HAND_JOINT_IDS[i];
                _jointIndices[i] = joints.FindIndex(bone => bone.id == boneId);
            }
        }

        public HandJointsSet this[int jointIndex]
        {
            get
            {
                int joint = _jointIndices[jointIndex];
                if (joint >= 0)
                {
                    return _jointSets[joint];
                }
                return null;
            }
        }
    }
}