using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Sog.Log
{
    public class NetMsgStat
    {
        public int MsgID;
        //发送数量
        public int SendNum;
        //发送的数据长度，字节
        public long SendLength;

        //接收数量
        public int RecvNum;
        //接收的数据长度，字节
        public long RecvLength;
        //接受消息总耗时
        public long RecvTotalTime;
        //接受消息最大耗时
        public long RecvMaxTime;
        //接受消息最小耗时
        public long RecvMinTime;
        public void Clear()
        {
            SendNum = 0;
            SendLength = 0;
            RecvNum = 0;
            RecvLength = 0;
            RecvTotalTime = 0;
            RecvMaxTime = 0;
            RecvMinTime = 0;
        }
    }

    public class StatIDValue
    {
        public string ID;
        public long Value;

        //log后不清空，缺省都清空
        public bool NotClearAfterLog;
    }

    /// <summary>
    /// 服务器统计类
    /// </summary>
    public class ServerStat : Singleton<ServerStat>
    {
        //字符串为索引
        private SortedDictionary<string, StatIDValue> m_statIDValuesMap;

        //每个消息发送，接收信息
        private SortedDictionary<int, NetMsgStat> m_statNetMsgMap;

        private int TotalSendNum;
        private int TotalRecvNum;
        private long TotalSendLength;
        private long TotalRecvLength;

        private long m_lastLogTime;
        private int m_logInterval;



        private object m_threadLock = new object();

        public ServerStat()
        {
            //缺省60秒log一次
            m_logInterval = 60*1000;

            m_statIDValuesMap = new SortedDictionary<string, StatIDValue>();

            m_statNetMsgMap = new SortedDictionary<int, NetMsgStat>();
        }

        public void Tick(long tNowMs)
        {
            if(m_lastLogTime == 0)
            {
                m_lastLogTime = tNowMs;
            }

            if (tNowMs < m_lastLogTime + m_logInterval)
            {
                return;
            }

            m_lastLogTime = tNowMs;

            LogHead();

            LogContent();

            LogTail();


        }

        private void LogContent_imp()
        {
            LogNetMsg();
            LogIDValues();
            LogGCMonitor();
        }

        private void LogContent()
        {
            lock (m_threadLock)
            {
                LogContent_imp();
            }
        }

        //搞个头，看起来方便点
        private void LogHead()
        {
            TraceLog.Stat("ServerStat begin =================================================================");
        }

        private void LogTail()
        {
            TraceLog.Stat("ServerStat end.\n");
        }

        private void LogIDValues()
        {
            //没有就算了
            if(m_statIDValuesMap.Count == 0)
            {
                return;
            }

            TraceLog.Stat("        ID                            Value");

            foreach(var idvalue in m_statIDValuesMap.Values)
            {
                TraceLog.Stat("{0,-40}{1,-20}", idvalue.ID, idvalue.Value);

                //log完后清空这项数值
                if (idvalue.NotClearAfterLog == false)
                {
                    idvalue.Value = 0;
                }
            }
            /*
            var keys = m_statIDValuesMap.Keys;
            var keyarray = keys.ToArray<string>();

            foreach (string id in keyarray)
            {
                StatIDValue idvalue = m_statIDValuesMap[id];

                TraceLog.Stat("{0,-40}{1,-20}",id, idvalue.Value);

                //log完后清空这项数值
                if (idvalue.NotClearAfterLog == false)
                {
                    idvalue.Value = 0;
                }
            }*/
        }

        /// <summary>
        /// 给id项目加value
        /// </summary>
        /// <param name="id"></param>
        /// <param name="value"></param>
        private void AddValue_imp(string id,long value, bool clearAfterLog = true)
        {
            if (m_statIDValuesMap.ContainsKey(id) == false)
            {
                StatIDValue idvalue = new StatIDValue();
                idvalue.ID = id;
                idvalue.Value = value;
                idvalue.NotClearAfterLog = !clearAfterLog;

                m_statIDValuesMap.Add(id, idvalue);
            }
            else
            {
                StatIDValue idvalue = m_statIDValuesMap[id];
                idvalue.Value += value;
                idvalue.NotClearAfterLog = !clearAfterLog;
            }

        }

        public void AddValue(string id, long value, bool clearAfterLog = true)
        {
            lock (m_threadLock)
            {
                AddValue_imp(id, value, clearAfterLog);
            }
        }


        /// <summary>
        /// 设置id项目为value
        /// </summary>
        /// <param name="id"></param>
        /// <param name="value"></param>
        private void SetValue_imp(string id, long value, bool clearAfterLog = true)
        {
            if (m_statIDValuesMap.ContainsKey(id) == false)
            {
                StatIDValue idvalue = new StatIDValue();
                idvalue.ID = id;
                idvalue.Value = value;
                idvalue.NotClearAfterLog = !clearAfterLog;

                m_statIDValuesMap.Add(id, idvalue);
            }
            else
            {
                StatIDValue idvalue = m_statIDValuesMap[id];
                idvalue.Value = value;
                idvalue.NotClearAfterLog = !clearAfterLog;
            }
        }

        public void SetValue(string id, long value, bool clearAfterLog = true)
        {
            lock (m_threadLock)
            {
                SetValue_imp(id, value, clearAfterLog);
            }
        }


        //如果不存在则创建
        private NetMsgStat GetNetMsgStatByID(int iMsgID)
        {
            if(!m_statNetMsgMap.ContainsKey(iMsgID))
            {
                NetMsgStat stat = new NetMsgStat();
                stat.MsgID = iMsgID;

                m_statNetMsgMap.Add(iMsgID, stat);
            }

            return m_statNetMsgMap[iMsgID];
        }

        public void OnNetSend(int iMsgID, int iDataLength)
        {
            lock (m_threadLock)
            {
                NetMsgStat stat = GetNetMsgStatByID(iMsgID);

                stat.SendLength += iDataLength;
                stat.SendNum += 1;

                TotalSendLength += iDataLength;
                TotalSendNum += 1;
            }
        }


        public void OnNetRecv(int iMsgID, int iDataLength, long time)
        {
            lock (m_threadLock)
            {
                NetMsgStat stat = GetNetMsgStatByID(iMsgID);

                stat.RecvLength += iDataLength;
                stat.RecvNum += 1;
                stat.RecvTotalTime += time;
                stat.RecvMaxTime = stat.RecvMaxTime < time ? time : stat.RecvMaxTime;
                if (stat.RecvNum > 1) //不是第一次
                {
                    stat.RecvMinTime = stat.RecvNum > 0 ? time : stat.RecvMinTime;
                }
                else
                {
                    stat.RecvMinTime = time;
                }
                

                TotalRecvLength += iDataLength;
                TotalRecvNum += 1;

                
            }

        }


        //网络消息，接受，发送数量和长度
        private void LogNetMsg()
        {
            TraceLog.Stat("TotalSendNum:{0,-10} TotalRecvNum:{1,-10} TotalSendLength:{2,-12} TotalRecvLength:{3,-12}",
                TotalSendNum, TotalRecvNum, TotalSendLength, TotalRecvLength);

            //清空
            TotalRecvLength = 0;
            TotalRecvNum = 0;
            TotalSendLength = 0;
            TotalSendNum = 0;

            TraceLog.Stat("MsgID     SendNum   RecvNum   SendLength     RecvLength     RecvTotalTime     RecvMaxTime     RecvMinTime     RecvAvgTime");

            foreach(var item in m_statNetMsgMap.Values)
            {
                long RecvAvgTime = item.RecvNum <= 0 ? 0 : item.RecvTotalTime / item.RecvNum;
                TraceLog.Stat("{0,-10}{1,-10}{2,-10}{3,-15}{4,-15}{5,-18}{6,-16}{7,-16}{8,-16}", 
                    item.MsgID, item.SendNum, item.RecvNum, item.SendLength, item.RecvLength, item.RecvTotalTime, item.RecvMaxTime, item.RecvMinTime, RecvAvgTime);

                //log完后清空这项数值
                item.Clear();
            }
            
            /*
            var keys = m_statNetMsgMap.Keys;
            var keyarray = keys.ToArray<int>();

            foreach (int id in keyarray)
            {
                NetMsgStat stat = m_statNetMsgMap[id];

                TraceLog.Stat("{0,-10}{1,-10}{2,-10}{3,-15}{4,-15}", id, stat.SendNum,stat.RecvNum,stat.SendLength,stat.RecvLength);

                //log完后清空这项数值
                stat.Clear();
            }
            */

        }


        private void LogGCMonitor()
        {
            GCMonitor.Instance.LogStat();
        }
    }
}