using DG.Tweening;
using UnityEditor;
using UnityEngine;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
using System;
using UnityEngine.Events;
#if MIRROR
using Mirror;
#endif


namespace UDE_HAND_INTERACTION
{
    public class InteractableObject : MonoBehaviour
    {
        [HideInInspector]
        public GameObject DefaultVirtualHand;
        [HideInInspector]
        public GameObject Hand { get; private set; }
        private GameObject _VirtualHand;
        private GameObject CalculateGameobj;
        private GameObject CalculateGameobjVirtualHand;
        private Vector3 PosOffset;
        private Quaternion RotOffset;

        private bool follow = false;
        public bool IsFollow => follow;
        private bool RegularTransfer = true;

        [HideInInspector]
        public int InteractPriority;

        [Space]
        public UnityEvent WhenObjInteract;
        public UnityEvent WhenObjDisable;

        public bool enablePhysicalProperties;
        public bool enableMotionTrace;
        public float traceVisibleSeconds = 5f;

        [Serializable, SerializeField]
        public struct HandInteractionPlans
        {
            [SerializeField]
            public string Name;
            [SerializeField]
            public HandInteraction[] handInteractions;

            public HandInteractionPlans(string name, HandInteraction[] interactions)
            {
                Name = name;
                handInteractions = interactions;
            }
        }

        [SerializeField, Space]
        public HandInteraction[] HandInteractions;
        [HideInInspector]
        public HandInteraction[] AllInteractions { get; private set; }

        public bool enableInteractionPlans;

        [SerializeField]
        public HandInteractionPlans[] InteractionPlan;

        [HideInInspector]
        public ObjectFollowType objectFollowType;
        [HideInInspector]
        public float TrackingTime;
        [HideInInspector]
        public float TrackingDistance;
        [HideInInspector]
        public float MovingOnTime;
        [HideInInspector]
        public Transform InsideOperationPart;
        private GameObject[] TempHand = { null, null };

        private Vector3 PreActivePos = Vector3.zero;
        private Quaternion PreActiveRot = Quaternion.identity;
        private bool BackReset = false;
        private Tween[] SlowLocalTween = new Tween[2];
        private Tween DistanceCurveTween;

        private Rigidbody _body;
        private bool hasRigid = false;
        private bool onThrow = false;
        private int FixedTimeIndedx = 1;
        public enum ObjectFollowType
        {
            Instant,
            SlowMove,
            Chasing,
            NoPose,
            Natural,
            Distance
        }

        public InteractableObjectOutline interactableObjectOutline => GetComponent<InteractableObjectOutline>();

        public bool SetInteractSound = false;

        void Start()
        {
            if (CalculateGameobj == null)
            {
                CalculateGameobj = new("CalculateGameobj");
                CalculateGameobj.transform.parent = transform;
            }
            if (CalculateGameobjVirtualHand == null)
            {
                CalculateGameobjVirtualHand = new("CalculateGameobjVirtualHand");
                CalculateGameobjVirtualHand.transform.parent = CalculateGameobj.transform;
            }
            AutoCheckHand();
            if(HandInteractions.Length == 0 && !enableInteractionPlans)
            {
                objectFollowType = ObjectFollowType.NoPose;
            }

            if(enablePhysicalProperties)
            {
                _body = GetComponent<Rigidbody>();
                hasRigid = _body != null;
            }

            if(TryGetComponent<AudioSource>(out var audio) && SetInteractSound)
            {
                WhenObjInteract.AddListener(() => { audio.Play(); });
            }

#if UNITY_EDITOR
            if (DefaultVirtualHand == null)
            {
                DefaultVirtualHand = AssetDatabase.LoadAssetAtPath<GameObject>("Assets/SDK/Interaction SDK/Prefabs/DefaultVirtualHand.prefab");
            }
#endif
        }

        void Update()
        {
            if (BackReset && transform.position != PreActivePos)
            {
                transform.SetPositionAndRotation(PreActivePos, PreActiveRot);
                BackReset = false;
            }
        }
        
        private void FixedUpdate()
        {
            if (onThrow && hasRigid && enableMotionTrace)
            {
                float time = Time.fixedDeltaTime * FixedTimeIndedx;
                GetComponent<LineRenderer>().positionCount = FixedTimeIndedx;
                GetComponent<LineRenderer>().SetPosition(FixedTimeIndedx - 1, transform.position);
                FixedTimeIndedx++;
                if(time >= traceVisibleSeconds)
                {
                    onThrow = false;
                    GetComponent<LineRenderer>().positionCount = 0;
                }
            }
        }

        public void HandActive(GameObject hand, HandInteraction handInteraction, Vector3 CalculatedRegularPoint)
        {
            if (ActiveLock) return;
            Hand = hand;
            PreActivePos = transform.position;
            PreActiveRot = transform.rotation;

            if (hasRigid && !follow)
            {
                FixedTimeIndedx = 1;
                onThrow = false;
                _body.useGravity = false;
                _body.isKinematic = true;
                Hand.GetComponent<Rigidbody>().isKinematic = true;
            }
            if (handInteraction == null)
            {
                transform.parent = Hand.transform;
                follow = true;
                WhenObjInteract.Invoke();
                DestroyImmediate(_body);
                Hand.GetComponent<Rigidbody>().isKinematic = false;
                return;
            }

            _VirtualHand = handInteraction.gameObject;

            if(CalculatedRegularPoint != Vector3.zero && RegularTransfer)
            {
                if(handInteraction.TryGetComponent<RegularShapeFit>(out var regular))
                { 
                    if(regular.SpecialSphere)
                    {
                        _VirtualHand.transform.RotateAround(CalculatedRegularPoint, hand.transform.right, hand.transform.eulerAngles.x - _VirtualHand.transform.eulerAngles.x);
                        _VirtualHand.transform.RotateAround(CalculatedRegularPoint, hand.transform.up, hand.transform.eulerAngles.y - _VirtualHand.transform.eulerAngles.y);
                        _VirtualHand.transform.RotateAround(CalculatedRegularPoint, hand.transform.forward, hand.transform.eulerAngles.z - _VirtualHand.transform.eulerAngles.z);
                    }
                    else if (regular.SpecialCube)
                    {
                        float Angle = 361;
                        Quaternion TargetRotation = Quaternion.identity;
                        Vector3 TargetPos = Vector3.zero;
                        List<Vector3> LoopUp = new() { regular.TargetObject.right, -regular.TargetObject.up, -regular.TargetObject.right, regular.TargetObject.up };
                        List<Vector3> LoopForward = new() { regular.TargetObject.right, -regular.TargetObject.forward, -regular.TargetObject.right, regular.TargetObject.forward };
                        regular.CalculateVector3();
                        void UpdateAngle(Vector3 Axis)
                        {
                            float _angle = Quaternion.Angle(_VirtualHand.transform.rotation, hand.transform.rotation);
                            if (_angle < Angle)
                            {
                                Angle = _angle;
                                _VirtualHand.transform.GetPositionAndRotation(out TargetPos, out TargetRotation);
                            }
                        }
                        for (int i = 0; i < 4; ++i)
                        {
                            _VirtualHand.transform.RotateAround(regular.CenterPoint, transform.forward, 90);
                            for (int j = 0; j < 4; ++j)
                            {
                                _VirtualHand.transform.RotateAround(regular.CenterPoint, LoopUp[j], 90);
                                UpdateAngle(LoopUp[j]);
                            }
                        }
                        for (int i = 0; i < 4; ++i)
                        {
                            _VirtualHand.transform.RotateAround(regular.CenterPoint, transform.up, 90);
                            for (int j = 0; j < 4; ++j)
                            {
                                _VirtualHand.transform.RotateAround(regular.CenterPoint, LoopForward[j], 90);
                                UpdateAngle(LoopForward[j]);
                            }
                        }
                        _VirtualHand.transform.SetPositionAndRotation(TargetPos, TargetRotation);
                    }
                    else
                    {
                        float Angle = 361;
                        float TargetRotation = 0f;
                        for (int i = 1; i < 361; ++i)
                        {
                            _VirtualHand.transform.RotateAround(CalculatedRegularPoint, regular.RealEnd - regular.RealStart, 1);
                            var _angle = Quaternion.Angle(_VirtualHand.transform.rotation, hand.transform.rotation);
                            if (_angle < Angle)
                            {
                                Angle = _angle;
                                TargetRotation = i;
                            }
                        }
                        _VirtualHand.transform.RotateAround(CalculatedRegularPoint, regular.RealEnd - regular.RealStart, TargetRotation);
                        regular.CalculateVector3();
                        _VirtualHand.transform.position = CalculatedRegularPoint + regular.CenterPointToHand;
                    }
                    RegularTransfer = false;
                }
            }
            if(InsideOperationPart != null && handInteraction.GetComponent<HandInteractionSetting>().OperationInsideObject)
            {
                if (TempHand[0] == null)
                {
                    TempHand[0] = Instantiate(Hand, Hand.transform.parent);
#if MIRROR
                    var net = TempHand[0].GetComponentInChildren<HandDriverNet>();
                    if (net != null) net.ForbidNet();
#endif
                    TempHand[0].name = handInteraction.name + "(Clone)";
                    TempHand[0].transform.SetParent(InsideOperationPart);
                    if (hasRigid)
                    {
                        Destroy(TempHand[0].GetComponent<Rigidbody>());
                    }
                    TempHand[0].transform.localScale = handInteraction.transform.localScale;
                    TempHand[0].GetComponentInChildren<HandDriver>().enabled = false;
                    TempHand[0].GetComponentInChildren<LineRenderer>().enabled = false;

                    Hand.GetComponent<HandInteractor>().HandVisionControl(false, TempHand[0].GetComponent<HandInteractor>());
                    TempHand[1] = Hand;
                    TempHand[0].transform.SetPositionAndRotation(Hand.transform.position, Hand.transform.rotation);
                    TempHand[0].transform.DOLocalMove(_VirtualHand.transform.localPosition, MovingOnTime);
                    TempHand[0].transform.DOLocalRotate(_VirtualHand.transform.localEulerAngles, MovingOnTime);
                }
                return;
            }

            transform.parent = Hand.transform;
            bool SkipMove = Hand.transform.position == _VirtualHand.transform.position && objectFollowType != ObjectFollowType.Chasing;
            bool SkipRot = Hand.transform.rotation == _VirtualHand.transform.rotation;
            RotOffset = Quaternion.Inverse(_VirtualHand.transform.localRotation);
            PosOffset = _VirtualHand.transform.localPosition;

            CalculateGameobj.transform.parent = transform;
            CalculateGameobjVirtualHand.transform.parent = CalculateGameobj.transform;
            Transform CalculateTrans = CalculateGameobj.transform;
            Transform CalculateTransV = CalculateGameobjVirtualHand.transform;
            CalculateTrans.SetPositionAndRotation(transform.position, transform.rotation);
            CalculateTransV.SetPositionAndRotation(_VirtualHand.transform.position, _VirtualHand.transform.rotation);
            if ((CalculateTransV.localRotation != Quaternion.identity || hand.transform.rotation != Quaternion.identity))
            {
                if (!SkipRot)
                {
                    CalculateTrans.rotation *= RotOffset;
                }
                CalculateTransV.parent = CalculateTrans.parent;
                CalculateTrans.parent = CalculateTransV;

                PosOffset = -CalculateTrans.localPosition;
            }

            Vector3 WorldTargetPos = Hand.transform.position - _VirtualHand.transform.position + CalculateTrans.position;
            Quaternion WorldTargetRot = Quaternion.Inverse(_VirtualHand.transform.localRotation * Quaternion.Inverse(Hand.transform.rotation));

            if ((SkipMove && SkipRot) || follow)
            {
                if (!follow && SkipMove)
                {
                    follow = true;
                    WhenObjInteract.Invoke();
                }
                if (objectFollowType == ObjectFollowType.Chasing)
                {
                    transform.DOMove(WorldTargetPos, TrackingTime);
                    transform.DORotateQuaternion(WorldTargetRot, TrackingTime);
                }
                return;
            }

            switch ((int)objectFollowType)
            {
                case 0:
                    transform.DOLocalMove(-PosOffset, 0);
                    transform.DOLocalRotateQuaternion(RotOffset, 0);
                    if(_body != null)
                    {
                        Destroy(_body);
                        Hand.GetComponent<Rigidbody>().isKinematic = Hand.GetComponent<PhysicalHand>() == null;
                    }
                    break;
                case 1:
                    if (SlowLocalTween[0] == null)
                    {
                        SlowLocalTween[0] = transform.DOLocalMove(-PosOffset, TrackingTime);
                        SlowLocalTween[1] = transform.DOLocalRotateQuaternion(RotOffset, TrackingTime);
                    }
                    if (_body != null)
                    {
                        Destroy(_body);
                        Hand.GetComponent<Rigidbody>().isKinematic = Hand.GetComponent<PhysicalHand>() == null;
                    }
                    break;
                case 2:
                    transform.DOMove(WorldTargetPos, TrackingTime);
                    transform.DORotateQuaternion(WorldTargetRot, TrackingTime);
                    if (_body != null)
                    {
                        Destroy(_body);
                        Hand.GetComponent<Rigidbody>().isKinematic = Hand.GetComponent<PhysicalHand>() == null;
                    }
                    break;
                case 4:
                    if (TempHand[0] == null)
                    {
                        transform.parent = null;
                        TempHand[0] = Instantiate(Hand, handInteraction.transform.parent);
                        TempHand[0].transform.localScale = handInteraction.transform.localScale;
                        TempHand[0].name = handInteraction.name + "(Clone)";
                        TempHand[0].GetComponentInChildren<HandDriver>().enabled = false;

                        Hand.GetComponent<HandInteractor>().HandVisionControl(false, TempHand[0].GetComponent<HandInteractor>());
                        TempHand[1] = Hand;
                        TempHand[0].transform.SetPositionAndRotation(Hand.transform.position, Hand.transform.rotation);
                        TempHand[0].transform.DOLocalMove(_VirtualHand.transform.localPosition, TrackingTime).OnComplete(() => 
                        {
                            SlowLocalTween[0] = transform.DOLocalMove(-PosOffset, TrackingTime).OnComplete(() => 
                            {
                                DestroyImmediate(TempHand[0]);
                                DestroyImmediate(_body);
                                TempHand[1].GetComponent<HandInteractor>().HandVisionControl(true, null);
                                Hand.GetComponent<Rigidbody>().isKinematic = Hand.GetComponent<PhysicalHand>() == null;
                                transform.parent = Hand.transform;
                            });
                            SlowLocalTween[1] = transform.DOLocalRotateQuaternion(RotOffset, TrackingTime);
                        });
                        TempHand[0].transform.DOLocalRotate(_VirtualHand.transform.localEulerAngles, TrackingTime);
                    }
                    break;
                case 5: //Distance
                    if(TryGetComponent<SphereCollider>(out var collider))
                    {
                        collider.enabled = false;
                    }
                    if (SlowLocalTween[0] == null)
                    {

                        SlowLocalTween[0] = transform.DOBlendableLocalMoveBy(-PosOffset - transform.localPosition, TrackingTime);
                        DistanceCurveTween = transform.DOBlendableMoveBy(Hand.GetComponent<HandInteractor>().CurveHighestVec, TrackingTime / 2).OnComplete(() => 
                        {
                            DistanceCurveTween = transform.DOBlendableMoveBy(-Hand.GetComponent<HandInteractor>().CurveHighestVec, TrackingTime / 2);
                        });
                        SlowLocalTween[1] = transform.DOLocalRotateQuaternion(RotOffset, TrackingTime);
                    }
                    if (_body != null)
                    {
                        Destroy(_body);
                        Hand.GetComponent<Rigidbody>().isKinematic = Hand.GetComponent<PhysicalHand>() == null;
                    }
                    break;
            }

            follow = true;
            WhenObjInteract.Invoke();
        }

        public void HandDisable(Handedness handedness)
        {
            if (transform.parent != null && transform.parent.GetComponent<HandInteractor>() != null && (int)transform.parent.GetComponent<HandInteractor>().handness == (int)handedness)
            {
                if(objectFollowType != ObjectFollowType.Distance)
                {
                    SlowLocalTween[0].Complete();
                    SlowLocalTween[1].Complete();
                }
                else
                {
                    if (TryGetComponent<SphereCollider>(out var collider))
                    {
                        collider.enabled = true;
                    }
                    SlowLocalTween[0].Kill();
                    SlowLocalTween[1].Kill();
                    DistanceCurveTween.Kill();
                }
                SlowLocalTween[0] = null;
                BackReset = objectFollowType == ObjectFollowType.SlowMove;
                transform.parent = null;
                RegularTransfer = true;
            }
            if(Hand != null)
            {
                var handRigid = Hand.GetComponent<Rigidbody>();
                handRigid.isKinematic = false;
                if (hasRigid && !gameObject.TryGetComponent<Rigidbody>(out _))
                {
                    _body = gameObject.AddComponent<Rigidbody>();
                    _body.velocity = handRigid.mass / _body.mass * handRigid.velocity;
                    _body.angularVelocity = handRigid.mass / _body.mass * handRigid.angularVelocity;
                    hasRigid = true;
                    onThrow = true;
                    if(InsideOperationPart == null)
                    {
                        TempHand = new GameObject[2] { null, null };
                    }
                }
            }
            if (TempHand[0] != null && !TempHand[0].name.Contains("Release"))
            {
                TempHand[0].name += "(Release)";
                TempHand[0].transform.DOMove(TempHand[1].transform.position, MovingOnTime);
                TempHand[0].transform.DORotateQuaternion(TempHand[1].transform.rotation, MovingOnTime);
                Invoke(nameof(HandBack), MovingOnTime);
            }
            Hand = null;
            follow = false;
            WhenObjDisable.Invoke();
        }

        private void HandBack()
        {
            Destroy(TempHand[0]);
            TempHand[1].GetComponent<HandInteractor>().HandVisionControl(true, null);
            TempHand = new GameObject[2] { null, null };
        }

        private bool ActiveLock;
        public void SetActiveLock(bool value)
        {
            ActiveLock = value;
        }

        public Transform GetReferenceHand(int index)
        {
            return TempHand[index]?.transform;
        }

        public void AutoCheckHand()
        {
            var interactions = GetComponentsInChildren<HandInteraction>().ToList();
            for(int i = interactions.Count - 1; i >= 0; i--)
            {
                if (interactions[i].transform.TryGetComponent(out FingerUseInteraction UseInteract))
                {
                    interactions.Remove(UseInteract.PreposeInteraction);
                }
            }
            AllInteractions = interactions.ToArray();
            if (!Application.isPlaying)
            {
                HandInteractions = interactions.ToArray();
            }
        }

        public void SwitchHandInteractioinPlan(int index)
        {
            if (!enableInteractionPlans || index < 0 || index >= InteractionPlan.Length)
            {
                return;
            }

            HandInteractions = InteractionPlan[index].handInteractions;
        }

        public void SwitchHandInteractioinPlan(string name)
        {
            if (!enableInteractionPlans || string.IsNullOrEmpty(name))
            {
                return;
            }

            foreach (var items in InteractionPlan)
            {
                if (items.Name == name)
                {
                    HandInteractions = items.handInteractions;
                    break;
                }
            }
        }

    }
}