using System.Text;
using Framework;
using Gameplay.Effect;
using Gameplay.Pool;
using Gameplay.Unit;
using UnityEngine;

namespace Gameplay.Buff
{
    using cfg.BuffCfg;

    public class BaseBuff: IPoolData
    {

        /// <summary>
        /// buff被挂载的对象
        /// </summary>
        public GameUnit owner;

        /// <summary>
        /// buff的创建者
        /// </summary>
        public GameUnit creator { get; private set; }
        public uint creatorId
        {
            get
            {
                if (creator == null)
                {
                    return 0;
                }
                return creator.GetID();
            }
        }

        public EBuffType buffType
        {
            get
            {
                return configData.BuffType;
            }
        }

        private bool _existNeedRemove = false;
        private bool _extNeedRemove = false;

        private int _createCellIndex;
        
        public bool needRemove
        {
            get
            {
                var existNeedRemove = _GetExistNeedRemove();
                if (existNeedRemove)
                {
                    return true;
                }
                return _GetExtNeedRemove();
            }
        }

        public float maxExistTime
        {
            get;
            private set;
        }

        public DataBuff configData;
        public BuffRuntimeData runtimeData;

        private float _remainTriggerTime;

        private EffectPlayingData _existEffectData;

        public bool isParamOverride;
        private float[] _overrideParams;

        public virtual void Ctor(GameUnit creator,
            DataBuff configData)
        {
            this.creator = creator;
            this.configData = configData;
            isParamOverride = false;
            _existNeedRemove = false;
            _extNeedRemove = false;
            if (runtimeData == null)
            {
                runtimeData = new BuffRuntimeData();
            }
            else
            {
                runtimeData.Reset();
            }
            if (configData.TriggerType == ETriggerType.ON_LOOP)
            {
                _remainTriggerTime = configData.TiggerUnitTime;
            }

            if (this.configData.ExistType == EExistType.During)
            {
                maxExistTime = this.configData.MaxExistTime;
            }
        }
        
        public void Init()
        {
            _createCellIndex = owner.transData.cellIndex;
            _OnInit();
        }

        protected virtual void _OnInit()
        {

            
        }
        
        public void ForceSetExistTime(float time)
        {
            maxExistTime = time;
        }

        public void Trigger()
        {
            _OnTrigger();

            if (configData.ExistType == EExistType.Once)
            {
                _existNeedRemove = true;
            }
        }

        protected virtual void _OnTrigger()
        {

        }

        public void OverrideFloatParams(params float[] overrideParams)
        {
            isParamOverride = true;
            _overrideParams = overrideParams;
        }

        public void TriggerAdd()
        {
            if (configData.TriggerType == ETriggerType.ON_ADD)
            {
                Trigger();
            }
            _OnAdd();

            if (configData.ExistType == EExistType.During ||
                configData.ExistType == EExistType.Allways)
            {
                if (configData.ExistEffectId != 0)
                {
                    var ownerTrans = owner.Node.transform;
                    _existEffectData = EffectManager.instance.PlayEffectById(configData.ExistEffectId,
                        ownerTrans.position, ownerTrans.rotation, ownerTrans);
                    _existEffectData.autoDestroy = false;
                }

            }
            
            if (!string.IsNullOrEmpty(configData.BuffDisplayIcon))
            {
                EventManager.Instance.Send(EventManager.EventName.INFIGHT_BUFF_ADDICON, this);
            }

            if (owner.debugShowInfo != null && owner.debugShowInfo.cacheConfigId != 0 && configData.BuffEffectType == EBuffEffectType.PositiveBuff)
            {
                EventManager.Instance.Send(EventManager.EventName.INFIGHT_AUDIO_GET_P_BUFF, owner.debugShowInfo.cacheConfigId);
            }
        }

        protected virtual void _OnAdd()
        {

        }

        protected virtual void _OnRemove()
        {

        }


        public void TriggerRemove()
        {
            if (configData.TriggerType == ETriggerType.ON_REMOVE)
            {
                Trigger();
            }

            if (!string.IsNullOrEmpty(configData.BuffDisplayIcon))
            {
                EventManager.Instance.Send(EventManager.EventName.INFIGHT_BUFF_REMOVEICON, this);
            }
            
            _OnRemove();

            if (_existEffectData != null)
            {
                _existEffectData.Destroy();
                _existEffectData = null;
            }
        }

        public void LogicUpdate(float dt)
        {
            if (!owner.statusData.isOnFloor)
            {
                // 不再地面上，不执行update逻辑
                return;
            }
            
            runtimeData.passTime += dt;
            if (configData.TriggerType == ETriggerType.ON_LOOP)
            {
                _remainTriggerTime -= dt;
                if (_remainTriggerTime <= 0)
                {
                    Trigger();
                    _remainTriggerTime += configData.TiggerUnitTime;
                }
            }
            
            _OnLogicUpdate(dt);
        }

        public void RefreshDuring()
        {
            runtimeData.passTime = 0;
        }
        
        public void SpecialTrigger(ETriggerType triggerType)
        {
            if (configData.TriggerType == triggerType)
            {
                Trigger();
            }
        }

        public void TriggerCellIndexChange()
        {
            if (configData.ExExitType == EExitType.CellIndexChange)
            {
                var newCellIndex = owner.transData.cellIndex;
                if (newCellIndex != _createCellIndex)
                {
                    _extNeedRemove = true;
                }
            }
        }

        public void TriggerOnTakeDamage()
        {
            if (configData.ExExitType == EExitType.OnTakeDamage)
            {
                _extNeedRemove = true;
            }
        }

        protected virtual void _OnLogicUpdate(float dt)
        {

        }

        public override string ToString()
        {
            var sb = new StringBuilder();
            sb.AppendLine("ID:" + configData.ID);
            sb.AppendLine("Name:" + configData.Name);
            return sb.ToString();
        }

        public void OnGet()
        {
        }
        public void OnReturn()
        {
            _existNeedRemove = false;
        }
        
        protected float[] _TryGetFloatParams()
        {
            if (isParamOverride)
            {
                return _overrideParams;
            }
            return configData.FloatParams.ToArray();
        }
        
        protected float _TryGetFloatParam(int index, float defaultValue = 0)
        {
            if (isParamOverride)
            {
                // 使用覆写的
                if (_overrideParams.Length > index)
                {
                    return _overrideParams[index];
                }
                return defaultValue;
            }
            
            // 使用配置的
            if (configData.FloatParams.Count > index)
            {
                return configData.FloatParams[index];
            }
            return defaultValue;
        }

        protected int _TryGetIntParam(int index)
        {
            var fValue = _TryGetFloatParam(index);
            return Mathf.RoundToInt(fValue);
        }

        private bool _GetExistNeedRemove()
        {
            switch (configData.ExistType)
            {
                case EExistType.Once:
                    // 如果存在时间大于0，那么超过时间就移除
                    if (maxExistTime > 0)
                    {
                        if (runtimeData.passTime >= maxExistTime)
                        {
                            return true;
                        }
                    }
                    // 否则，只要被触发过就移除
                    return _existNeedRemove;
                case EExistType.During:
                    return runtimeData.passTime >= maxExistTime;
                case EExistType.Allways:
                    return false;
                default:
                    DebugUtil.LogError("暂未处理的buff existType:{0}",configData.ExistType);
                    return true;
            }
        }

        private bool _GetExtNeedRemove()
        {
            switch (configData.ExExitType)
            {
                case EExitType.None:
                    return false;
                case EExitType.CreaterOutFight:
                    if (creator == null || creator.isDisposed)
                    {
                        return true;
                    }
                    return GameUnitManager.instance.infightUnits.Contains(creator.GetID());
                case EExitType.OnTakeDamage:
                    return _extNeedRemove;
                default:
                    DebugUtil.LogError("暂未处理的buff extExitType:{0}",configData.ExExitType);
                    return _extNeedRemove;
            }
        }
    }
}