using jeanf.EventSystem;
using UnityEngine;
using jeanf.propertyDrawer;
namespace jeanf.vrplayer
{
    public class PointOnCollisionTriggerWhenGrab : MonoBehaviour, IDebugBehaviour
    {
        public bool isDebug
        {
            get => _isDebug;
            set => _isDebug = value;
        }

        [SerializeField] private bool _isDebug = false;

        [Space(10)] [SerializeField] private int grabCount = 0;
        [SerializeField] private int handsInDetectionzone = 0;

        [Header("Listening on:")] [SerializeField]
        private BoolEventChannelSO _LeftHandState = default;

        [SerializeField] private BoolEventChannelSO _RightHandState = default;
        [SerializeField] private VoidEventChannelSO _HandDetectedEvent = default;
        [SerializeField] private VoidEventChannelSO _HandDisapearedEvent = default;

        [Header("Broadcasting on:")] [SerializeField]
        private IntEventChannelSO grabCountChannelSO;

        [SerializeField] private bool setPointingPoseOnOppositeHandGrab = false;

        [DrawIf("setPointingPoseOnOppositeHandGrab", true, ComparisonType.Equals)] [SerializeField]
        private BoolEventChannelSO leftHandIsPointingChannelSO;

        [DrawIf("setPointingPoseOnOppositeHandGrab", true, ComparisonType.Equals)] [SerializeField]
        private BoolEventChannelSO rightHandIsPointingChannelSO;

        [SerializeField] private bool leftHandGrabState = false;
        [SerializeField] private bool rightHandGrabState = false;

        private void OnEnable()
        {
            if (_LeftHandState != null)
                _LeftHandState.OnEventRaised += RegisterLeftHandState;
            if (_RightHandState != null)
                _RightHandState.OnEventRaised += RegisterRightHandState;

            if (_HandDetectedEvent != null)
                _HandDetectedEvent.OnEventRaised += HandDetectedInPointingZone;
            if (_HandDisapearedEvent != null)
                _HandDisapearedEvent.OnEventRaised += HandDisappearedInPointingZone;

            GetPrimaryInHandItemWithVRController.OnIpadStateChanged += SetGrabState;
        }

        private void OnDisable()
        {
            if (_LeftHandState != null)
                _LeftHandState.OnEventRaised -= null;
            if (_RightHandState != null)
                _RightHandState.OnEventRaised -= null;

            if (_HandDetectedEvent != null)
                _HandDetectedEvent.OnEventRaised -= null;
            if (_HandDisapearedEvent != null)
                _HandDisapearedEvent.OnEventRaised -= null;

            GetPrimaryInHandItemWithVRController.OnIpadStateChanged -= SetGrabState;
        }

        private void CountTotalGrabsInAction(bool value)
        {
            if (isDebug) Debug.Log($"Grab event received: {value}");

            grabCount = value ? grabCount += 1 : grabCount -= 1;
            SendGrabCount(grabCount);
        }

        private void RegisterLeftHandState(bool value)
        {
            leftHandGrabState = value;
            CountTotalGrabsInAction(value);
        }

        private void RegisterRightHandState(bool value)
        {
            rightHandGrabState = value;
            CountTotalGrabsInAction(value);
            
        }

        private void SendGrabCount(int value)
        {
            grabCountChannelSO.RaiseEvent(value);
        }

        private void HandDetectedInPointingZone()
        {
            handsInDetectionzone += 1;

            SetPointingPose(true);
        }

        private void SetGrabState(IpadState grabState)
        {
            switch (grabState)
            {
                case IpadState.InLeftHand:
                    leftHandGrabState = true;
                    rightHandGrabState = false;
                    break;
                case IpadState.InRightHand:
                    rightHandGrabState = true;
                    leftHandGrabState = false;
                    break;
                case IpadState.Disabled:
                    leftHandGrabState = false;
                    rightHandGrabState = false;
                    SetDefaultPose();
                    break;
            }
        }

        private void HandDisappearedInPointingZone()
        {
            handsInDetectionzone -= 1;
            if (handsInDetectionzone < 0) handsInDetectionzone = 0;

            SetPointingPose(false);
        }

        private void SetPointingPose(bool state)
        {
            if(!setPointingPoseOnOppositeHandGrab) return;
            if (state)
            {
                Point();
            }
            else
            {
                SetDefaultPose();
            }
        }

        private void Point()
        {
            if(_isDebug) Debug.Log("grab > 1 handInDetectZone > 1");
            if (leftHandGrabState)
            {
                if(_isDebug) Debug.Log("setting RIGHT hand pointing to TRUE");
                rightHandIsPointingChannelSO.RaiseEvent(true);
            }

            else if (rightHandGrabState)
            {
                if(_isDebug) Debug.Log("setting LEFT hand pointing to TRUE");
                leftHandIsPointingChannelSO.RaiseEvent(true);
            }
        }


        private void SetDefaultPose()
        {
            if(_isDebug) Debug.Log("setting RIGHT hand pointing to FALSE");
            rightHandIsPointingChannelSO.RaiseEvent(false);
            if(_isDebug) Debug.Log("setting LEFT hand pointing to FALSE");
            leftHandIsPointingChannelSO.RaiseEvent(false);
        }
    }
}