using UnityEngine;
using System.Collections.Generic;


namespace Rokid.UXR.Interaction
{
    /// <summary>
    /// 头手交互驱动器
    /// </summary>
    public class HeadHandDriver : MonoBehaviour
    {

        [SerializeField]
        private List<IHeadHandDriver> drivedObjs = new List<IHeadHandDriver>();
        private HandType holdHandType = HandType.None;

        private bool isHovering = false;

        private void Start()
        {
            GesEventInput.OnTrackedFailed += OnTrackedFailed;
            FindComponets(transform);
        }

        private void OnDestroy()
        {
            GesEventInput.OnTrackedFailed -= OnTrackedFailed;
        }



        private void FindComponets(Transform tsf)
        {
            IHeadHandDriver[] handDrivers = tsf.GetComponents<IHeadHandDriver>();
            if (handDrivers != null && handDrivers.Length > 0)
                drivedObjs.AddRange(handDrivers);
            if (tsf.childCount > 0)
            {
                foreach (Transform child in tsf)
                {
                    FindComponets(child);
                }
            }
        }

        private void OnTrackedFailed(HandType handType)
        {
            if (handType == holdHandType || handType == HandType.None)
            {
                holdHandType = HandType.None;
                ChangeHoldHandType();
            }
        }


        private void Update()
        {
            if (holdHandType == HandType.None)
            {
                if (GesEventInput.Instance.GetHandDown(HandType.LeftHand))
                {
                    holdHandType = HandType.LeftHand;
                    ChangeHoldHandType();
                }
                else if (GesEventInput.Instance.GetHandDown(HandType.RightHand))
                {
                    holdHandType = HandType.RightHand;
                    ChangeHoldHandType();
                }
                if (!GesEventInput.Instance.GetHandPress(holdHandType))
                {
                    OnHandRelease();
                }
            }
            else if (GesEventInput.Instance.GetHandPress(holdHandType))
            {
                OnHandPress();
            }
            if (GesEventInput.Instance.GetHandUp(holdHandType))
            {
                RKLog.Info($"====HeadHandDriver==== GetHandUp: {holdHandType}");
                holdHandType = HandType.None;
                ChangeHoldHandType();
            }
        }

        private void ChangeHoldHandType()
        {
            for (int i = 0; i < drivedObjs.Count; i++)
            {
                drivedObjs[i].OnBeforeChangeHoldHandType(holdHandType);
            }
            for (int i = 0; i < drivedObjs.Count; i++)
            {
                drivedObjs[i].OnChangeHoldHandType(holdHandType);
            }
            RKLog.Info($"====HeadHandDriver==== ChangeHoldHandType: {holdHandType}");
        }

        private void OnHandPress()
        {
            for (int i = 0; i < drivedObjs.Count; i++)
            {
                drivedObjs[i].OnHandPress(holdHandType);
            }
        }

        private void OnHandRelease()
        {
            for (int i = 0; i < drivedObjs.Count; i++)
            {
                drivedObjs[i].OnHandRelease();
            }
        }
    }
}