using Thousandto.Code.Center;
using Thousandto.Code.Global;
using System.Collections.Generic;

namespace Thousandto.Code.Logic
{
    //掉落归属系统
    public class DropAscriptionSystem
    {
        #region//私有变量
        private Dictionary<ulong, Dictionary<ulong, int>> _playerDropMonsters = new Dictionary<ulong, Dictionary<ulong, int>>();
        private Dictionary<ulong, ulong> _monsterTopRankPlayer = new Dictionary<ulong, ulong>();
        #endregion

        #region//函数
        //改变消息
        public void UpdateMonsterDropOwners(ulong monsterID, List<long> owners)
        {
            if(owners == null || owners.Count <= 0)
            {
                _monsterTopRankPlayer.Remove(monsterID);
            }
            else
            {
                _monsterTopRankPlayer[monsterID] = (ulong)owners[0];
            }
            //先移除这个monster的所有数据
            var removeList = new List<ulong>(_playerDropMonsters.Count);
            var iterPlayer = _playerDropMonsters.GetEnumerator();
            while (iterPlayer.MoveNext())
            {
                var valueDic = iterPlayer.Current.Value;
                if (valueDic.ContainsKey(monsterID))
                {
                    valueDic.Remove(monsterID);
                }

                if (valueDic.Count <= 0)
                {
                    //此玩家已经不在任何列表了，移除他
                    removeList.Add(iterPlayer.Current.Key);
                }
            }

            for (int i = 0; i < removeList.Count; ++i)
            {
                _playerDropMonsters.Remove(removeList[i]);
            }

            if (owners != null && owners.Count > 0)
            {
                //重新设置这个monster的所有数据，只需要前三个目标数据
                for (int i = 0; i < owners.Count && i < 3; ++i)
                {
                    Dictionary<ulong, int> curMonsterDic = null;
                    if(!_playerDropMonsters.TryGetValue((ulong)owners[i], out curMonsterDic))
                    {
                        curMonsterDic = new Dictionary<ulong, int>();
                        _playerDropMonsters.Add((ulong)owners[i], curMonsterDic);
                    }
                    curMonsterDic[monsterID] = i;
                }
            }
            GameCenter.PushFixEvent(LogicEventDefine.EID_EVENT_HUD_UPDATE_DROPINFO);
        }

        //获取玩家最高排名
        public int GetPlayerMaxRank(ulong roleID, out ulong monsterId)
        {
            int result = int.MaxValue;
            monsterId = 0;
            Dictionary<ulong, int> curMonsterDic = null;
            if(_playerDropMonsters.TryGetValue(roleID, out curMonsterDic))
            {
                var iter = curMonsterDic.GetEnumerator();
                try
                {
                    while(iter.MoveNext())
                    {
                        if(iter.Current.Value < result)
                        {
                            monsterId = iter.Current.Key;
                            result = iter.Current.Value;
                        }
                    }
                }
                finally
                {
                    iter.Dispose();
                }
            }
            return result;
        }

        //获取第一名的玩家id
        public ulong GetRankTopPlayerID(ulong monsterID)
        {
            ulong result = 0;
            _monsterTopRankPlayer.TryGetValue(monsterID, out result);
            return result;
        }
        #endregion
    }
}