using UnityEngine;
using AibisDream.FixSystem;
using UnityEngine.EventSystems;
using AibisDream.Framework;
using AibisDream.Kit;
using AibisDream.Utility;
using DG.Tweening;

namespace AibisDream
{
    [RequireComponent(typeof(EventTriggerEx))]
    public class ExpressionPlug : MonoBehaviour, IInteraction
    {
        private static readonly int ShineFade = Shader.PropertyToID("_ShineFade");
        
        private Vector3 _startPos;
        private readonly Vector3 _pickupOffset = new(0, 0, 0);
        private readonly Quaternion _pickupRotationOffset = Quaternion.Euler(0, 0, 150);
        private readonly Quaternion _initRotation = Quaternion.Euler(0, 0, 180);

        private ExpressionCableSystem _cableSystem;
        private SpriteRenderer _sprite;
        private Transform _plugRootPos;
        private EventTriggerEx _trigger;
        private ISocket _currentSocket;
        private ExpressionCable _cable; // 对应的线缆

        private bool _isDragging;
        private bool _isPhysicCableActive;

        [Header("调试设置")]
        public float detectRadius = 1f; // 增加检测半径
        public LayerMask socketLayer; // 设置插槽层级

        private void Awake()
        {
            InitComponentRef();
            EventRegister();
            _startPos = transform.position;
        }

        private void InitComponentRef()
        {
            _cableSystem = GetComponentInParent<ExpressionCableSystem>();
            _sprite = GetComponent<SpriteRenderer>();
            _plugRootPos = transform.GetChild(0);
            _trigger = GetComponent<EventTriggerEx>();
        }

        private void EventRegister()
        {
            _trigger.Register(EventTriggerType.Drag, OnDrag);
            _trigger.Register(EventTriggerType.PointerDown, OnPointerDown);
            _trigger.Register(EventTriggerType.PointerUp, OnPointerUp);
        }

        private void OnDrag(BaseEventData eventData)
        {
            if (!IsAvailable) return;
            if (!_isDragging) return;

            if (eventData is PointerEventData pointerData)
            {
                transform.position = CommonUtil.GetMouseWorldPos(pointerData.position, transform);
                UpdateCable();
            }
        }

        private void OnPointerDown(BaseEventData eventData)
        {
            if (!IsAvailable) return;
            
            _isDragging = true;

            if (_currentSocket != null)
            {
                PullUpSocket();
            }

            AdjustPlugPos();
            _sprite.enabled = true;
        }

        private void OnPointerUp(BaseEventData eventData)
        {
            _isDragging = false;

            // 寻找最近的可用插槽
            if (_cableSystem.TryFindClosestSocket(transform.position, out var socket))
            {
                InsertSocket(socket);
            }
            else
            {
                ReturnToStartPosition();
            }
        }

        private void InsertSocket(ISocket targetSocket)
        {
            // 修改插头位置
            transform.position = targetSocket.GetSocketPos();
            _cable.SetEndPos(transform);

            // 处理插槽插入
            _currentSocket = targetSocket;
            targetSocket.PlugIn();
            _sprite.enabled = false;
        }

        public void PullUpSocket()
        {
            // 修改线缆终点
            _cable.SetEndPos(_plugRootPos);

            // 处理插槽拔出
            _currentSocket?.PlugOut();
            _sprite.enabled = true;
            _currentSocket = null;
        }

        public void ReturnToStartPosition()
        {
            transform.DOMove(_startPos, 0.1f);
            transform.rotation = _initRotation;
            _cable.SetEndPos(_plugRootPos);
        }

        private void AdjustPlugPos()
        {
            transform.position += _pickupOffset;
            transform.rotation = _pickupRotationOffset;
        }

        public void SetCable(ExpressionCable cable)
        {
            _cable = cable;
        }

        private void UpdateCable()
        {
            if (_cable != null)
            {
                _cable.UpdateEndPosition(_plugRootPos.position);
            }
        }

        public bool IsActive => true;
        public bool IsAvailable => true;

        public GameObject GetGameObject()
        {
            return gameObject;
        }

        // 用于调试
        private void OnDrawGizmosSelected()
        {
            Gizmos.color = Color.yellow;
            Gizmos.DrawWireSphere(transform.position, detectRadius);
        }
    }
}