using Thousandto.Core.Asset;
using UnityEngine;
using Thousandto.Cfg.Data;
using Thousandto.Code.Center;
using Thousandto.Code.Global;
using Thousandto.Plugins.Common.UniScene;

namespace Thousandto.Code.Logic
{
    //技能对象
    public class DropItem : Character
    {
        #region//私有变量
        //是否已经发送了删除消息
        private bool _postDelete = false;
        //动画播放器
        private DropItemAnimPlayer _animPlayer = null;
        //生存时间
        private float _lifeTimer = 0f;
        //最大生存时间
        private const float MaxLifeTime = 10f;
        private int _cfgID = 0;
        private Vector2 _targetPos = Vector2.zero;
        private ulong _ownerID = 0;
        private int _quality = QualityCode.White;
        private int _iconId = 0;
        #endregion

        #region//属性
        public  int Quality
        {
            get
            {
                return _quality;
            }
        }
        public int Icon
        {
            get
            {
                return _iconId;
            }
        }
        #endregion

        #region//初始化,加载Skin,卸载处理
        protected override FSkinBase OnSetupSkin()
        {
            FSkinModel skin = GameCenter.LuaSystem.Adaptor.CreateFSkinModel(FSkinTypeCode.Custom);
            skin.SetLayer(LayerUtils.SummonObj);
            return skin;
        }

        protected override bool OnInitializeAfter(EntityInitInfo baseInfo)
        {
            base.OnInitializeAfter(baseInfo);
            var info = baseInfo as DropItemInitInfo;
            SyncInfo(info);
            ShowHUD();
            return true;
        }

        protected override void OnUninitializeBefore()
        {
            base.OnUninitializeBefore();

            HideHUD();

            if(_animPlayer != null)
            {
                _animPlayer.Destory();
            }
            ItemDropEffectSystem.Remove(_ownerID);
        }

        public void SyncInfo(DropItemInitInfo info)
        {
            _propMoudle = new BaseProperty();
            _propMoudle.ID = info.ID;
            _propMoudle.Owner = this;
            _cfgID = (int)info.CfgID;
            _ownerID = info.OwnerID;
            _targetPos = info.TargetPos;
            _lifeTimer = 0f;
            BodyScale = 0.8f;

            _quality = QualityCode.White;
            DeclareItem item = DeclareItem.Get(_cfgID);
            if (item != null)
            {
                _quality = item.Color;
                _propMoudle.Name = item.Name;
                _iconId = item.Icon;
            }
            else
            {
                DeclareEquip equip = DeclareEquip.Get(_cfgID);
                if (equip != null)
                {
                    _quality = equip.Quality;
                    _propMoudle.Name = equip.Name;
                    _iconId = equip.Icon;
                }
            }

            int bodyVfx = 0;
            switch (_quality)
            {
                case QualityCode.Violet: //紫色
                    bodyVfx = 406;
                    break;
                case QualityCode.Orange: //金色
                    bodyVfx = 406;
                    break;
                case QualityCode.Golden: //金色
                    bodyVfx = 401;
                    break;
                case QualityCode.Red:// 红色
                    bodyVfx = 402;
                    break;
                case QualityCode.Pink:// 粉色
                    bodyVfx = 403;
                    break;
                case QualityCode.DarkGolden:// 暗金
                    bodyVfx = 404;
                    break;
                case QualityCode.Colorful:// 七彩
                    bodyVfx = 405;
                    break;
            }
            //开始播放动画
            _animPlayer = new DropItemAnimPlayer(this, _targetPos, bodyVfx);
            var owner = GameCenter.GameSceneSystem.FindEntity<Character>(_ownerID);
            if (owner != null)
            {
                SetDirection2d(Position2d - _targetPos, false, false);
            }
        }

        private void PostDelete()
        {
            if (!_postDelete)
            {
                var baseScene = Scene as BaseScene;
                if (baseScene != null)
                {
                    baseScene.DeleteEntity(ID);
                }
                _postDelete = true;
            }
        }

        protected override void OnUpdate(float dt)
        {
            if (_animPlayer != null)
            {
                _animPlayer.Update();
                if (_animPlayer.IsFinish)
                {
                    PostDelete();
                }
            }

            //更新生存时间
            _lifeTimer += dt;
            if (_lifeTimer >= MaxLifeTime)
            {
                PostDelete();
            }
            base.OnUpdate(dt);
        }

        #endregion

        #region//私有类
        //掉落物品的动画播发器
        private class DropItemAnimPlayer
        {
            #region//常量
            private const float DropTime = 0.3f;
            private const float WaitTime = 3f;
            private const float EndFlyTime = 0.75f;
            #endregion

            #region//私有变量
            private DropItem _host = null;
            private Vector2 _targetPos = Vector2.zero;
            private DropAnimState _curState = DropAnimState.DropDown;
            private Vector3[] _animCurve = null;
            private int _bodySfx = 0;
            private FGameObjectVFX _waitVfx = null;
            private float _animTimer = 0f;
            private Vector3 _flyStartPos = Vector3.zero;
            #endregion

            #region//属性
            public bool IsFinish
            {
                get
                {
                    return _curState == DropAnimState.Finish;
                }
            }
            #endregion

            #region//构造函数
            //初始并且开始播放动画
            public DropItemAnimPlayer(DropItem host, Vector2 targetPos, int bodySfx)
            {
                _host = host;
                _targetPos = targetPos;
                _bodySfx = bodySfx;
                ChangeState(DropAnimState.DropDown);
            }
            #endregion

            #region//公有函数
            //更新
            public void Update()
            {
                switch (_curState)
                {
                    case DropAnimState.DropDown:
                        {
                            _animTimer += Time.deltaTime;
                            if (_animTimer <= DropTime)
                            {
                                _host.SetPosition(iTween.Interp(_animCurve, _animTimer / DropTime));
                            }
                            else
                            {
                                _host.RayCastToGroundXOZ(_targetPos);
                                ChangeState(DropAnimState.Wait);
                            }
                        }
                        break;
                    case DropAnimState.Wait:
                        {
                            _animTimer += Time.deltaTime;
                            if (_animTimer > WaitTime)
                            {
                                ChangeState(DropAnimState.FlyToPlayer);
                            }
                        }
                        break;
                    case DropAnimState.FlyToPlayer:
                        {
                            var owner = GameCenter.GameSceneSystem.FindEntity<Character>(_host._ownerID);
                            if (owner == null)
                            {
                                ChangeState(DropAnimState.Finish);
                                break;
                            }
                            _animTimer += Time.deltaTime;
                            if(_animTimer > EndFlyTime)
                            {
                                ChangeState(DropAnimState.Finish);
                            }
                            _host.RayCastToGround(Vector3.Lerp(_flyStartPos, owner.Position, _animTimer / EndFlyTime));
                        }
                        break;
                    case DropAnimState.Finish:
                        break;
                }
            }

            //释放
            public void Destory()
            {
                if(_waitVfx != null)
                {
                    _waitVfx.Destroy();
                    _waitVfx = null;
                }
            }
            #endregion

            #region//私有函数
            private void ChangeState(DropAnimState state)
            {
                _curState = state;
                switch (_curState)
                {
                    case DropAnimState.DropDown:
                        {
                            _animTimer = 0f;
                            var pots = new Vector3[3];
                            pots[0] = _host.Position;
                            pots[2] = _host.GetTerrainPosition(_targetPos.x, _targetPos.y);
                            pots[1] = Vector3.Lerp(pots[0], pots[2], 0.5f);
                            pots[1].y += 2f;
                            _animCurve = iTween.PathControlPointGenerator(pots);
                        }
                        break;
                    case DropAnimState.Wait:
                        {
                            _animTimer = 0f;
                            if (_bodySfx > 0)
                            {
                                _waitVfx = new FGameObjectVFX(ModelTypeCode.OtherVFX, _bodySfx);
                                _waitVfx.SetParent(_host.ModelTransform);
                                _waitVfx.SetPosition(_host.Position);
                                _waitVfx.SetLayer(_host.Layer);
                                _waitVfx.Play(1f);
                            }
                        }
                        break;
                    case DropAnimState.FlyToPlayer:
                        {
                            _animTimer = 0f;
                            _flyStartPos = _host.Position;
                        }
                        break;
                    case DropAnimState.Finish:
                        if (_waitVfx != null)
                        {
                            _waitVfx.Destroy();
                            _waitVfx = null;
                        }
                        break;
                }
            }
            #endregion

            #region//私有枚举
            private enum DropAnimState
            {
                DropDown,
                Wait,
                FlyToPlayer,
                Finish,
            }
            #endregion
        }
        #endregion
    }
}