using UnityEngine;
using DG.Tweening;
using AibisDream.Kit;
using AibisDream.Framework;

namespace AibisDream.FixSystem
{
    public enum CableMode
    {
        None,   // 都隐藏（收起状态）
        Visual, // 使用 Cable（拖拽时）
        Physic  // 使用 PhysicCable（闲置时）
    }

    public class CablePanel : MonoBehaviour, IOperatorPanel
    {
        private const int SortingOrderRetracted = 41;

        #region 组件索引

        [Header("插线组件索引")]
        [SerializeField] private Plug plugRef;
        [SerializeField] private Cable cableRef;
        [SerializeField] private PhysicCable physicCableRef;
        [SerializeField] private Transform cableRootPos;
        [SerializeField] private CableReel cableReelRef;

        [Header("灯光系统")]
        [SerializeField] private CablePanelLight panelLight;

        public Plug PlugRef => plugRef;
        public Cable CableRef => cableRef;
        public PhysicCable PhysicCableRef => physicCableRef;
        public Transform CableRootPos => cableRootPos;
        public CableReel CableReelRef => cableReelRef;
        public CablePanelLight PanelLight => panelLight;

        public BodyModuleSystem BodyModuleSystem { get; private set; }

        #endregion

        #region 系统状态
        public bool isCableRetracted = true; // 线缆是否收起

        [SerializeField] private Transform retractedPos; // 收起位置

        private ISocket curSocket;

        #endregion

        private void Start()
        {
            InitComponentRefs();
            InitSystem();
            InitCableVisualFromPrefab();
        }

        private void OnDestroy()
        {
            plugRef.OnInsertSocket -= OnInsertSocket;
            plugRef.OnPullUpSocket -= OnPullUpSocket;
            plugRef.OnPlugPointerDown -= OnPlugPoinerDown;
        }
        
        private void InitComponentRefs()
        {
            BodyModuleSystem = FixSystemCenter.SystemDic.Get<BodyModuleSystem>();
        }


        public void InitLight(bool isLightOn)
        {
            panelLight?.Initialize(isLightOn);
        }

        private void InitSystem()
        {
            plugRef.OnInsertSocket += OnInsertSocket;
            plugRef.OnPullUpSocket += OnPullUpSocket;
            plugRef.OnPlugPointerDown += OnPlugPoinerDown;
        }

        private void InitCableVisualFromPrefab()
        {
            if (isCableRetracted)
            {
                SetRetractCable();
            }
            else
            {
                DropDownCableImmediate();
            }
        }

        public bool TryGetPluggedModuleName(out string moduleName)
        {
            if (curSocket is BodyModule bodyModule)
            {
                moduleName = bodyModule.data.moduleName;
                return !string.IsNullOrEmpty(moduleName);
            }

            moduleName = null;
            return false;
        }

        /// <summary>读档：同步写回线缆与插头终态，无动画、无 Yarn、无 PlugIn 事件。</summary>
        public void ApplyCableSnapshot(bool retracted, string pluggedModuleName)
        {
            SilentPullUpSocket();

            if (retracted)
            {
                if (ShouldSkipRetractOnRestore())
                {
                    if (isCableRetracted)
                    {
                        DropDownCableImmediate();
                    }

                    curSocket = null;
                    return;
                }

                SetRetractCable();
                curSocket = null;
                return;
            }

            DropDownCableImmediate();

            if (!string.IsNullOrEmpty(pluggedModuleName))
            {
                RestorePlugToModule(pluggedModuleName);
            }
            else
            {
                curSocket = null;
                SetCableMode(CableMode.Physic);
            }
        }

        public void DropDownCableImmediate()
        {
            PlugRef.PullUpSocketSilent();
            CableReelRef.ResetRotation();
            PlugRef.RestoreAtStartPositionImmediate();
            SetCableMode(CableMode.Physic);
            isCableRetracted = false;
        }

        private void RestorePlugToModule(string moduleName)
        {
            var module = BodyModuleSystem?.FindBodyModuleByName(moduleName);
            if (module == null)
            {
                Debug.LogWarning($"[CablePanel] RestorePlugToModule: 未找到模块 {moduleName}，插头留在初始位。");
                curSocket = null;
                SetCableMode(CableMode.Physic);
                return;
            }

            curSocket = module;
            var socketPos = module.GetSocketPos();
            PlugRef.RestoreInsertedAt(socketPos);
            CableRef.SetEndPos(socketPos);
            SetCableMode(CableMode.Visual);
            BodyModuleSystem.CloseModuleSlots(null);
        }

        private void SilentPullUpSocket()
        {
            if (curSocket == null) return;

            CableRef.SetEndPos(PlugRef.PlugRoot);
            curSocket.PlugOut();
            curSocket = null;
            PlugRef.SetSpriteVisible(true);
        }

        private static bool ShouldSkipRetractOnRestore()
        {
            return FixSystemCenter.Instance != null
                && FixSystemCenter.Director.HasMode
                && FixSystemCenter.Director.CurrentMode == FixSceneMode.BodyModule;
        }

        private void Update()
        {
            // 获取线缆方向并更新转盘旋转
            if (CableRef != null && CableReelRef != null)
            {
                CableReelRef.UpdateRotation();
            }
        }

        public void ResetPlug()
        {
            if (IsPlugInSocket())
            {
                PlugRef.PullUpSocket();
            }

            BodyModuleSystem.CloseModuleSlots(null);
            DropDownCableImmediate();

            AudioManager.Instance.PlaySfx("event:/ActionFB/mods_close");
            AudioManager.Instance.PlaySfx("event:/FollowInput/plugdrop");
        }

        // ------------------------------ 插头事件 ------------------------------
        private void OnInsertSocket(ISocket socket)
        {
            var isSameSocket = curSocket == socket;
            curSocket = socket;
            CableRef.SetEndPos(socket.GetSocketPos());
            AudioManager.Instance.PlaySfx("event:/FollowInput/plugin");

            if (!isSameSocket
                && !EventSystemEx.Instance.isLocked
                && socket is BodyModule bodyModule)
            {
                // 插入模块时触发插入事件
                EnumEventSystem.Global.Send(EventEnum.PlugIn);
            }
        }

        private void OnPullUpSocket()
        {
            // 修改线头位置
            CableRef.SetEndPos(PlugRef.PlugRoot);

            curSocket?.PlugOut();
            AudioManager.Instance.PlaySfx("event:/FollowInput/plugout");

            // 如果是模块
            if (!EventSystemEx.Instance.isLocked && curSocket is BodyModule)
            {
                EnumEventSystem.Global.Send(EventEnum.PlugOut);
            }

            curSocket = null;
        }

        private void OnPlugPoinerDown()
        {
            if (IsPlugInSocket()) PlugRef.PullUpSocket();

            // 点击时切换到视觉线缆
            SetCableMode(CableMode.Visual);

            // 打开插孔
            BodyModuleSystem.OpenModuleSlots();
        }

        // ------------------------------ 系统状态 ------------------------------
        public bool IsPlugInSocket()
        {
            return curSocket != null;
        }

        // ------------------------------ 线缆操作 ------------------------------

        /// <summary>
        /// 设置线缆显示模式
        /// </summary>
        /// <param name="mode">线缆模式</param>
        /// <param name="followTarget">PhysicCable跟随的目标，默认为Plug</param>
        public void SetCableMode(CableMode mode, Transform followTarget = null)
        {
            switch (mode)
            {
                case CableMode.None:
                    CableRef.HideCable();
                    PhysicCableRef.SetEnabled(false);
                    PhysicCableRef.SetTarget(null);
                    break;

                case CableMode.Visual:
                    CableRef.ShowCable();
                    PhysicCableRef.SetEnabled(false);
                    PhysicCableRef.SetTarget(null);
                    break;

                case CableMode.Physic:
                    CableRef.HideCable();
                    PhysicCableRef.SetEnabled(true);
                    PhysicCableRef.Init(PlugRef.transform.position);
                    PhysicCableRef.SetTarget(followTarget != null ? followTarget : PlugRef.transform);
                    break;
            }
        }

        /// <summary>
        /// 寻找最接近的Module
        /// </summary>
        /// <param name="sourcePos">源位置</param>
        /// <param name="targetModule">最近的Module</param>
        /// <returns>是否能找到目标范围内的Module</returns>
        public bool TryFindClosestModule(Vector3 sourcePos, out BodyModule targetModule)
        {
            var res = BodyModuleSystem.TryFindClosestModule(sourcePos, out targetModule);
            BodyModuleSystem.CloseModuleSlots(targetModule);
            return res;
        }

        public void PullUpCable()
        {
            if (isCableRetracted) return;

            if (IsPlugInSocket())
            {
                PlugRef.PullUpSocket();
            }

            BodyModuleSystem.CloseModuleSlots(null);

            PlugRef.transform.DOMove(retractedPos.position, 0.1f).OnComplete(() =>
            {
                ApplyRetractedState();
                isCableRetracted = true;
            });

            AudioManager.Instance.PlaySfx("event:/ActionFB/mods_close");
            AudioManager.Instance.PlaySfx("event:/FollowInput/plugdrop");
        }

        public void DropDownCable()
        {
            if (!isCableRetracted) return;
            // 确保 Plug 已脱离 Socket（收起状态下通常已脱离，此处为防御性调用）
            PlugRef.PullUpSocket();
            CableReelRef.ResetRotation();
            PlugRef.transform.DOMove(PlugRef.GetStartPos(), 0.1f).OnComplete(() =>
            {
                SetCableMode(CableMode.Physic);
                isCableRetracted = false;
            });
        }

        /// <summary>应用收起状态的视觉与组件设置（不含动画、不含 isCableRetracted 更新）</summary>
        private void ApplyRetractedState()
        {
            SetCableMode(CableMode.None);

            PlugRef.transform.position = retractedPos.position;
            PlugRef.transform.rotation = retractedPos.rotation;

            var plugSprite = PlugRef.GetComponent<SpriteRenderer>();
            plugSprite.sortingLayerName = CableReelRef.GetComponent<SpriteRenderer>().sortingLayerName;
            plugSprite.sortingOrder = SortingOrderRetracted;
        }

        public void SetRetractCable()
        {
            ApplyRetractedState();
            isCableRetracted = true;
        }

        #region 灯光系统 - 供外部调用

        /// <summary>
        /// 启动系统
        /// </summary>
        public System.Collections.IEnumerator StartSystem()
        {
            if (panelLight != null)
            {
                yield return panelLight.StartSystem();
            }
        }

        /// <summary>
        /// 更新呼吸灯
        /// </summary>
        public void UpdateBreathingLight(LightState state)
        {
            panelLight?.UpdateBreathingLight(state);
        }

        /// <summary>
        /// 更新ECG波形
        /// </summary>
        public void UpdateECGWave(LightState state)
        {
            panelLight?.UpdateECGWave(state);
        }

        /// <summary>
        /// 获取当前波形类型
        /// </summary>
        public RobotECGWave.WaveType GetCurrentWaveType()
        {
            return panelLight != null ? panelLight.GetCurrentWaveType() : RobotECGWave.WaveType.RobotECG;
        }

        /// <summary>
        /// 设置波形类型
        /// </summary>
        public void SetWaveType(RobotECGWave.WaveType waveType)
        {
            panelLight?.SetWaveType(waveType);
        }

        #endregion

        public void Init()
        {

        }

        public void Open()
        {

        }

        public void Close()
        {

        }
    }
}