using MongoDB.Bson;
using MongoDB.Bson.Serialization.Attributes;
using System;
using System.Collections.Generic;

namespace ET
{
    namespace EventType
    {
        public struct NumbericChange
        {
            public Entity Parent;
            public NumericType NumericType;
            public float Old;
            public float New;
        }
    }

    public class NumericComponentAwakeSystem : AwakeSystem<NumericComponent>
    {
        public override void Awake(NumericComponent self)
        {
            self.Awake();
        }
    }

    public class NumericComponentDestroySystem : DestroySystem<NumericComponent>
    {
        public override void Destroy(NumericComponent self)
        {
            self.NumericDic.Clear();
        }
    }

    public class NumericComponent : Entity, ISerializeToEntity
    {
        [BsonRepresentation(BsonType.Double, AllowTruncation = true)]
        [MongoDB.Bson.Serialization.Attributes.BsonDictionaryOptions(MongoDB.Bson.Serialization.Options.DictionaryRepresentation.ArrayOfDocuments)]
        public Dictionary<int, float> NumericDic = new Dictionary<int, float>();

        public void Awake()
        {
            // 这里初始化base值
        }
        public float Get(NumericType numericType)
        {
            return GetByKey((int)numericType);
        }
        public float Get(int numericType)
        {
            return GetByKey(numericType);
        }
#if UNITY
        public int GetAsInt(NumericType numericType)
        {
            return UnityEngine.Mathf.RoundToInt(GetByKey((int)numericType));
        }
#endif
#if SERVER || ROBOT
        public int GetAsInt(NumericType numericType)
        {
            return MathHelper.RoundToInt(GetByKey((int)numericType));
        }

        public int GetAsInt(int numericType)
        {
            return MathHelper.RoundToInt(GetByKey(numericType));
        }

        public long GetAsLong(int numericType)
        {
            return MathHelper.RoundToLong(GetByKey(numericType));
        }
        public long GetAsLong(NumericType numericType)
        {
            return MathHelper.RoundToLong(GetByKey((int)numericType));
        }
#endif
        public void Set(NumericType nt, float value, bool canMulti = true)
        {
            this[nt, canMulti] = value;
        }
        public void AddSet(NumericType nt, float value, bool canMulti = true)
        {
            if (value == 0) return;
            this[nt, canMulti] += value;
        }
        public void ReduceSet(NumericType nt, float value, bool canMulti = true)
        {
            if (value == 0) return;
            this[nt, canMulti] -= value;
        }
        private float this[NumericType numericType, bool isCanMultiSet]
        {
            get
            {
                return this.GetByKey((int)numericType);
            }
            set
            {
                float v = this.GetByKey((int)numericType);
                if (Math.Abs(v - value) < 0.00001f)
                {
                    return;
                }

                NumericDic[(int)numericType] = value;

                Update(numericType, v, isCanMultiSet);
            }
        }



        private float GetByKey(int key)
        {
            this.NumericDic.TryGetValue(key, out float value);
            return value;
        }
        private void Update(NumericType numericType, float old, bool isCanMultiSet)
        {
            int final = (int)numericType;
            float result = this.GetByKey(final);

            //如果不是直接操作最终值，需要发送两次事件，一次是修改的值，一次是最终值
            if (numericType > NumericType.Max)
            {
                final = (int)numericType / 10;
                int bas = final * 10 + 1;
                int add = final * 10 + 2;

                //取得最终值，由基础xxx+额外xxx值组成
                result = this.GetByKey(bas) + GetByKey(add);
                //更新最终值
                Set((NumericType)final, result, false);
                old = GetByKey(final);
            }

            //将改变的值以事件的形式发送出去
            if (isCanMultiSet)
                Game.EventSystem.Publish(new EventType.NumbericChange()
                {
                    Parent = this.Parent,
                    NumericType = (NumericType)final,
                    Old = old,
                    New = result
                }).Coroutine();
        }
        public void ReSetAddNum()
        {
            List<int> removeList = new List<int>();
            foreach (var kv in NumericDic)
            {
                if (kv.Key > (int)NumericType.Max)
                {
                    int final = kv.Key / 10;
                    int add = final * 10 + 2;
                    if (GetByKey(add) != 0)
                        removeList.Add(add);
                }
            }
            foreach (int key in removeList)
            {
                Set((NumericType)key, 0, true);
            }
        }
    }
}