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

using Sog;
using ProtoCSStruct;

namespace World
{
    public static class GameReportSvc
    {
        //上报时间间隔，服务器启动的时候会变
        private static int m_ReportAccountSecondInterVal = 5;
        //最大上报时间间隔, 也不能太慢，realmList进程需要及时知道个game进程的online情况，用来做选择
        private const int ReportAccountSecondInterValMax = 20;
        private static long lastReportAccountTime = 0;

        private static long lastLogOnlineTime = 0;

        private static long lastForceGetAllRealmTime = 0;

        public static int WorldOnlinePlayerCount { get; private set;}


        //game或者gamegate的上报
        public static void OnGameReportReq(uint remoteAppID, StructPacket packet)
        {
            ref SSGameReportReq gameReportReq = ref packet.GetMessage<SSGameReportReq>();

            int onlinePlayer = gameReportReq.OnlinePlayer;

            bool find = false;
            var svrData = WorldServerUtils.GetWorldServerData();

            foreach (var info in svrData.m_gameSvrInfo)
            {
                if (info.serverId == gameReportReq.GameSvrid)
                {
                    info.onlinePlayer = onlinePlayer;
                    find = true;
                    break;
                }
            }

            if (find == false)
            {
                svrData.m_gameSvrInfo.Add(new GameSvrInfoWorld {serverId = gameReportReq.GameSvrid, onlinePlayer = onlinePlayer});
            }

            //如果是game，要判断md5是否已经成功拉取
            if (ServerIDUtils.GetServerType(gameReportReq.GameSvrid) == (int)ServerType.Game)
            {
                //如果有game进程没有获取成功RecvConfigRealmListMd5, 则强制全量拉取
                if (gameReportReq.RecvConfigRealmListMd5.IsEmpty())
                {
                    svrData.recvRealmListMd5 = null;
                    m_ReportAccountSecondInterVal = 2; //马上发起一次查询

                    TraceLog.Trace("SysSvc.OnGameReportReq from server {0}, RecvConfigRealmListMd5 is empty , force clear svrData.recvRealmListMd5"
                        , ServerIDUtils.IDToString(gameReportReq.GameSvrid));
                }
            }

            TraceLog.Trace("SysSvc.OnGameReportReq from server {0}, online {1}"
                , ServerIDUtils.IDToString(gameReportReq.GameSvrid)
                , gameReportReq.OnlinePlayer);
        }

        public static void OnRealmOnlineReport(uint remoteAppID, StructPacket packet)
        {
            ref SSOnlineReport report = ref packet.GetMessage<SSOnlineReport>();

            var onlineTable = WorldServerUtils.GetWorldServerData().realmOnlineGame;

            // 一个realm可以分布在多个gamesvr上, 一个gamesvr可以有多个realm
            // 统计每个gamesvr上的realm在线信息, 然后在tick时累加获得realm的实际在线
            List<RealmOnline> gameSvrOnline;
            if (! onlineTable.TryGetValue(remoteAppID, out gameSvrOnline))
            {
                gameSvrOnline = new List<RealmOnline>();
                onlineTable.Add(remoteAppID, gameSvrOnline);
            }

            for (int i = 0; i < report.RealmOnline.Count; i++)
            {
                int realmId = report.RealmOnline[i].Id;
                int onlineNum = report.RealmOnline[i].Value;

                RealmOnline info = gameSvrOnline.FirstOrDefault(d => d.realmId == realmId);
                if (info != null)
                {
                    info.onlineNum = onlineNum;
                }
                else
                {
                    info = new RealmOnline {realmId = realmId, onlineNum = onlineNum};
                    gameSvrOnline.Add(info);
                }
            }
        }

        public static void OnGameReportRealmlistRes(uint remoteAppID, StructPacket packet)
        {
            //备机不处理
            if(AccountServerSelect.IsBackAccountServer(remoteAppID))
            {
                return;
            }

            ref SSGameReportRealmlistRes res = ref packet.GetMessage<SSGameReportRealmlistRes>();
            var serverData = WorldServerUtils.GetWorldServerData();
            //需要这个临时保存列表，是为了防止2个消息过程中有不完整的configRealm的情况发生
            var tmpRealmsRecv = serverData.m_configRealmTempForRecv;

            //0 表示realmList服务器还没有更新，是老的, 1表示是新的realmList发出的第一个消息
            if (res.MsgIndexFrom1 == 0 || res.MsgIndexFrom1 == 1)
            {
                tmpRealmsRecv.Clear();
            }

            //先加入临时列表
            for (int i = 0; i < res.RealmList.Count; i++)
            {
                var realm = new RealmBriefInfo(ref res.RealmList[i]);
                tmpRealmsRecv[realm.realmId] = realm;
            }

            //如果是最后一个消息了
            if (res.MsgIndexFrom1 == 0 || res.RealmList.Count == 0)
            {
                serverData.m_configRealm.Clear();
                serverData.m_configRealmMap.Clear();

                var recordInfo = WorldServerUtils.GetWorldMainlandRecordData();
                //排个序
                var list = tmpRealmsRecv.OrderBy(o => o.Key).ToList();
                for (int i = 0; i < list.Count; i++)
                {
                    var realm = list[i].Value;
                    serverData.m_configRealm.Add(realm);
                    serverData.m_configRealmMap.Add(realm.realmId, realm);
                    if (!recordInfo.m_logicWorldMap.ContainsKey(realm.logicWorldId))
                    {
                      
                    }
                }

                serverData.recvRealmListMd5 = res.RealmListMd5.GetString();
            }

            TraceLog.Trace("GameReportSvc.OnGameReportRealmlistRes m_configRealm count {0}, m_configRealmTempForRecv count {1}",
                serverData.m_configRealm.Count, serverData.m_configRealmTempForRecv.Count);

            //广播给所有game
            WorldServerUtils.GetPacketSender().Broadcast<SSGameReportRealmlistRes>((int)ServerType.Game, packet);
        }

        public static void OnTick(long nowSec)
        {
            TickNotifyAccountGateCount(nowSec);
            TickLogOnlineReportWorldOnline(nowSec);
        }

        public static void TickNotifyAccountGateCount(long nowSec)
        {
            if (nowSec - lastReportAccountTime < m_ReportAccountSecondInterVal)
            {
                return;
            }

            lastReportAccountTime = nowSec;

            if (m_ReportAccountSecondInterVal < ReportAccountSecondInterValMax)
            {
                m_ReportAccountSecondInterVal += 1;
            }

            var reportReq = new SSGameReportRealmlistReq();

            var svrData = WorldServerUtils.GetWorldServerData();
            int iAllServerOnlinePlayer = 0;
            foreach (var info in svrData.m_gameSvrInfo)
            {
                if (ServerIDUtils.GetServerType(info.serverId) == (int)ServerType.Game)
                {
                    iAllServerOnlinePlayer += info.onlinePlayer;
                }
				
                if(ServerIDUtils.GetServerType(info.serverId) == (int)ServerType.GameGate ||
                   ServerIDUtils.GetServerType(info.serverId) == (int)ServerType.ChatGate)
                {
                    GameGateSvrInfo gateInfo;
                    gateInfo.GateSvrid = info.serverId;
                    gateInfo.OnlinePlayer = info.onlinePlayer;

                    reportReq.Gates.Add(ref gateInfo);
                }
            }

            //上报world的在线(包括gate的连接数量)给account->realmlist,

            reportReq.OnlinePlayer = iAllServerOnlinePlayer;
            reportReq.WorldSvrid = WorldServerUtils.GetAppID();

            //为了以防万一，每10分钟强制拉一次全量
            if (nowSec - lastForceGetAllRealmTime >= 600)
            {
                lastForceGetAllRealmTime = nowSec;
            }
            else
            {
                reportReq.RealmListMd5.SetString(svrData.recvRealmListMd5);
            }

            // 广播给主机和备机上的RealmsList
            WorldServerUtils.GetPacketSender().Broadcast((int)ServerType.RealmsList, (int)SSMsgID.GameReportRealmlistReq, ref reportReq, 0 , 0);

            WorldOnlinePlayerCount = iAllServerOnlinePlayer;
        }

        public static void TickLogOnlineReportWorldOnline(long nowSec)
        {
            //1分钟1次就行了，其实也没啥用
            if (nowSec - lastLogOnlineTime < 60)
            {
                return;
            }

            lastLogOnlineTime = nowSec;

            var svrData = WorldServerUtils.GetWorldServerData();
            int iAllServerOnlinePlayer = 0;
            foreach (var info in svrData.m_gameSvrInfo)
            {
                if (ServerIDUtils.GetServerType(info.serverId) == (int)ServerType.Game)
                {
                    iAllServerOnlinePlayer += info.onlinePlayer;
                }
            }


            //上报全服人数
            // 写 bill 日记
            WorldBillLogUtils.LogOnlinePlayer(iAllServerOnlinePlayer);
        }

        // 统计每个realm的在线数据
        public static void TickRealmOnline()
        {
            var allOnline = WorldServerUtils.GetWorldServerData().realmOnlineAll;
            allOnline.Clear();

            var gameOnline = WorldServerUtils.GetWorldServerData().realmOnlineGame;

            // 把不同gamesvr上的同一个realm的在线人数累加起来
            foreach (List<RealmOnline> realmList in gameOnline.Values)
            {
                foreach (RealmOnline realmOne in realmList)
                {
                    if (! allOnline.ContainsKey(realmOne.realmId))
                    {
                        allOnline[realmOne.realmId] = realmOne.onlineNum;
                    }
                    else
                    {
                        allOnline[realmOne.realmId] += realmOne.onlineNum;
                    }
                }
            }

            SSRealmOnlinePlayerToOpsvr req = new SSRealmOnlinePlayerToOpsvr();
            foreach (KeyValuePair<int, int> kvp in allOnline)
            {
                RealmOnlineInfo info = new RealmOnlineInfo();
                info.RealmID = kvp.Key;
                info.OnlinePlayer = kvp.Value;

                if (req.RealmList.Count < req.RealmList.GetMaxCount())
                {
                    req.RealmList.Add(info);
                }
                else
                {
                    // 同步发送到 op 
                    WorldServerUtils.GetPacketSender().Broadcast((int)ServerType.Operation, (int)SSMsgID.RealmOnlineplayerToOpsvr, ref req, 0, 0);
                    
                    req.RealmList.Clear();
                    req.RealmList.Add(info);
                }
            }

            if (req.RealmList.Count > 0)
            {
                // 同步发送到 op 
                WorldServerUtils.GetPacketSender().Broadcast((int)ServerType.Operation, (int)SSMsgID.RealmOnlineplayerToOpsvr, ref req, 0, 0);
            }
        }
    }
}