using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using Fantasy;
using Fantasy.Async;
using NBC.Asset;
using NBF.Utils;
using UnityEngine;
using Object = UnityEngine.Object;

namespace NBF
{
    public class FRod : FHandItem
    {
        public PlayerItem PlayerItem;

        public override int ConfigId => PlayerItem?.ConfigID ?? 0;

        public RodAsset Asset;

        public FReel Reel;
        public FHook Hook;
        public FBobber Bobber;
        public FBait Bait;
        public FLure Lure;
        public FWeight Weight;
        public FLine Line;


        public Transform GearRoot;

        // public FWaterDisplacement LureHookWaterDisplacement;

        [HideInInspector] public FFish currentFish;
        public RodRingNode[] rings;


        private void Awake()
        {
            Asset = GetComponent<RodAsset>();
        }

        private void Start()
        {
            Asset.CCDIK.enabled = true;
        }

        private void Update()
        {
            BendControl();
            // if (Input.GetKeyDown(KeyCode.Alpha0))
            // {
            //     SetLineLength(lineLength);
            // }
            // else if (Input.GetKeyDown(KeyCode.Plus) || Input.GetKeyDown(KeyCode.Equals))
            // {
            //     lineLength += 0.1f;
            //     SetLineLength(lineLength);
            // }
            // else if (Input.GetKeyDown(KeyCode.Minus))
            // {
            //     lineLength -= 0.1f;
            //     SetLineLength(lineLength);
            // }
            // SetLineLength();
        }

        public void SetLineLength()
        {
            if (!Line) return;
            if (Line.LineType == LineType.Spinning)
            {
                //没有浮漂类型
                Line.Lure.SetJointDistance(PlayerItem.LineLength);
                if (PlayerItem.StretchRope)
                {
                    // Line.SetTargetLength(PlayerItem.Tension > 0f ? 0f : PlayerItem.LineLength);
                    Line.SetTargetLength(PlayerItem.LineLength);
                }
            }
            else
            {
                //有浮漂
                Line.Lure.SetJointDistance(PlayerItem.FloatLength);
                Line.Bobber.SetJointDistance(PlayerItem.LineLength - PlayerItem.FloatLength);
                if (PlayerItem.StretchRope)
                {
                    // Line.SetTargetLength(PlayerItem.Tension > 0f ? 0f : PlayerItem.LineLength - PlayerItem.FloatLength);
                    Line.SetTargetLength(PlayerItem.LineLength - PlayerItem.FloatLength);
                    Line.SetLureLength(PlayerItem.FloatLength);
                }
            }
        }

        private void LateUpdate()
        {
            Test();
        }

        public IEnumerator Destroy()
        {
            if (GearRoot != null)
            {
                Object.Destroy(GearRoot.gameObject);
            }

            yield return 1;
        }

        public async FTask InitRod(PlayerItem playerItem)
        {
            PlayerItem = playerItem;

            var playerView = playerItem.Owner.GetComponent<PlayerView>();

            var playerViewUnity = playerView.Unity;

            transform.localPosition = Vector3.zero;
            transform.localRotation = Quaternion.identity;
            transform.localScale = Vector3.one;
            SceneSettings.Instance.GearNode.position = playerViewUnity.transform.position;
            await FTask.WaitFrame(playerView.Scene); //等待1帧

            var obj = new GameObject($"rod_{ConfigId}");
            obj.transform.SetParent(SceneSettings.Instance.GearNode);
            obj.transform.position = playerViewUnity.transform.position;
            obj.transform.rotation = playerViewUnity.transform.rotation;
            obj.transform.localScale = Vector3.one;
            GearRoot = obj.transform;

            var parent = GearRoot;

            CreateFishingHandler();
            await FTask.WaitFrame(playerView.Scene); //等待1帧
            // children.Sort();
            foreach (var childConfigId in playerItem.BindItems)
            {
                var itemType = childConfigId.GetItemType();
                var config = Game.Tables.TbItem.Get(childConfigId);
                if (itemType == ItemType.Reel)
                {
                    Reel = config.InstantiateAndComponent<FReel>(Asset.ReelConnector, Vector3.zero,
                        Quaternion.identity);
                    Reel.SetItemConfigId(childConfigId);
                }
                else if (itemType == ItemType.Bobber)
                {
                    Bobber = config.InstantiateAndComponent<FBobber>(parent, Vector3.zero,
                        Quaternion.identity);
                    Bobber.SetItemConfigId(childConfigId);
                }
                else if (itemType == ItemType.Hook)
                {
                    Hook = config.InstantiateAndComponent<FHook>(parent, Vector3.zero,
                        Quaternion.identity);
                    Hook.SetItemConfigId(childConfigId);
                }
                else if (itemType == ItemType.Bait)
                {
                    Bait = config.InstantiateAndComponent<FBait>(parent, Vector3.zero,
                        Quaternion.identity);
                    Bait.SetItemConfigId(childConfigId);
                }
                else if (itemType == ItemType.Lure)
                {
                    Lure = config.InstantiateAndComponent<FLure>(parent, Vector3.zero,
                        Quaternion.identity);
                    Lure.SetItemConfigId(childConfigId);
                }
                else if (itemType == ItemType.Weight)
                {
                    Weight = config.InstantiateAndComponent<FWeight>(parent, Vector3.zero,
                        Quaternion.identity);
                    Weight.SetItemConfigId(childConfigId);
                }
                else if (itemType == ItemType.Line)
                {
                    // lineItemInfo = child;
                }
            }

            await FTask.WaitFrame(playerView.Scene); //等待1帧
            SetLineLength();
            if (Reel)
            {
                Reel.reelingDrag = 0.699f;
                Reel.transform.SetParent(Asset.ReelConnector);
                Reel.transform.localPosition = Vector3.zero;
                Reel.transform.localEulerAngles = Vector3.zero;
                Reel.Init(this);
            }

            if (Bobber)
            {
                Bobber.Init(this);
            }

            if (Hook)
            {
                Hook.Init(this);
            }

            if (Bait)
            {
                Bait.Init(this);
            }

            if (Lure)
            {
                Lure.Init(this);
            }

            if (Weight)
            {
                Weight.Init(this);
            }

            await FTask.WaitFrame(playerView.Scene); //等待1帧

            transform.SetParent(playerViewUnity.ModelAsset.RodRoot);
            transform.localPosition = Vector3.zero;
            transform.rotation = playerViewUnity.ModelAsset.RodRoot.rotation;
        }


        public void CreateFishingHandler()
        {
            if (Line == null)
            {
                Debug.LogError("创建钓组=====");
                var itemConfig = Game.Tables.TbItem.Get(ConfigId);
                var rodType = (ItemSubType)itemConfig.Type;
                if (rodType == ItemSubType.RodTele)
                {
                    CreateObiFishingLine(0);
                }
                else if (rodType == ItemSubType.RodSpine || rodType == ItemSubType.RodBolo)
                {
                    CreateObiFishingLine(1);
                }
            }
        }


        public void CreateObiFishingLine(int currentLineTypeIndex)
        {
            if (!Line)
            {
                var lineSolverPrefab = Assets.Load<GameObject>("Assets/ResRaw/Prefabs/Line/LineSolver.prefab");
                var solver = Instantiate(lineSolverPrefab, GearRoot);
                solver.transform.position = Asset.lineConnector.position;
                solver.transform.rotation = Asset.lineConnector.rotation;
                var indexNames = new[] { "fishing line float set", "fishing line spinning" };
                var path =
                    $"Assets/ResRaw/Prefabs/Line/{indexNames[currentLineTypeIndex]}.prefab";
                var prefab = Assets.Load<GameObject>(path);

                GameObject obj = Instantiate(prefab, solver.transform);
                obj.transform.localPosition = Vector3.zero;
                obj.transform.localScale = Vector3.one;
                obj.transform.rotation = Quaternion.identity;

                Line = obj.GetComponent<FLine>();
                Line.transform.position = Asset.lineConnector.position;
                Line.Init(this);
            }
        }

        public void SetRing(RodRingAsset ringAsset)
        {
            if (Asset.rings == null || Asset.rings.Length < 1) return;

            var trans = ringAsset.rings;
            RodRingNode lastRingNode = null;
            List<RodRingNode> list = new List<RodRingNode>();
            for (int i = 0; i < Asset.rings.Length; i++)
            {
                var ring = Asset.rings[i];
                if (ring == null)
                {
                    Log.Error($"ring is null,index={i}");
                    continue;
                }

                var lastName = ring.name.GetLastString();
                foreach (var tran in trans)
                {
                    var ringNode = tran.ring;
                    var lastName2 = ringNode.name.GetLastString();
                    if (lastName != lastName2) continue;
                    list.Add(tran);
                    ringNode.SetParent(ring);
                    ringNode.localPosition = Vector3.zero;
                    ringNode.localRotation = Quaternion.identity;
                    lastRingNode = tran;
                    break;
                }
            }

            if (lastRingNode != null)
            {
                Asset.lineConnector = lastRingNode.point;
            }

            rings = list.ToArray();
        }


        #region 鱼竿弯曲

        private List<float> previousWeights = Enumerable.Repeat(0f, 10).ToList();
        private float bendSmooth = 1f;
        public float maxRodStrength = 1f;

        public float CurrentTension01
        {
            get
            {
                float value = 0f;
                // if ((bool)currentReel && (bool)fishingLine)
                // {
                //     float linePullingForce = currentReel.LinePullingForce;
                //     value = Mathf.Min(fishingLine.CurrentLineTension, linePullingForce) / maxRodStrength;
                // }
                if (Line)
                {
                    value = PlayerItem.Tension / maxRodStrength;
                }

                return Mathf.Clamp01(value);
            }
        }

        private void BendControl()
        {
            var _ccdik = Asset.CCDIK;

            var state = PlayerItem.Owner.State;


            Vector3 vector = Line.Lure.transform.position;

            // 当前物体的朝向与指向 Lure 的方向之间的夹角，在 0（完全对齐）到 1（完全相反）之间的一个比例值
            float headingAlignment = Vector3.Angle(base.transform.forward,
                (Line.Lure.transform.position - transform.position).normalized) / 180f;
            // 经过朝向调制后的有效张力
            var effectiveTension = Mathf.Clamp(CurrentTension01 * headingAlignment, 0f, 1f);

            float multiple = 0;
            if (state == PlayerState.Fight)
            {
                multiple = 1;
            }
            else
            {
                multiple = 0.1f;
            }

            float targetWeight = effectiveTension * multiple;
            if (targetWeight > 0)
            {
                // Debug.Log($"CurrentTension01={CurrentTension01} LinelenghtDiferent={Line.LinelenghtDiferent} Tension={PlayerItem.Tension} num2={effectiveTension} num3={headingAlignment} num6={multiple}");
            }

            if (state == PlayerState.Prepare)
            {
                targetWeight = 0.002f;
            }

            float item = Mathf.MoveTowards(_ccdik.solver.IKPositionWeight, targetWeight, Time.deltaTime * bendSmooth);
            previousWeights.RemoveAt(0);
            previousWeights.Add(item);
            float averageWeight = previousWeights.Average();
            if (currentFish)
            {
                averageWeight = Math.Min(averageWeight, 0.01f);
            }

            _ccdik.solver.SetIKPosition(vector);
            _ccdik.solver.SetIKPositionWeight(averageWeight);
        }

        #endregion

        private void Test()
        {
            // var root = Player.ModelAsset.RodRoot;
            // if (!root) return;
            // transform.SetPositionAndRotation(root.position, root.rotation);
        }
    }
}