/*
 Sog 游戏基础库
 2016 by zouwei
 */

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

using Sog;
using Sog.Gate;

using ProtoCSStruct;

namespace Game
{
    // 实现 SendToPlayer
    public abstract class BasePacketHandler : IPacketHandler, IReloadableService
    {
        protected uint m_serviceSeqID;

        public uint GetServiceSeqID()
        {
            return m_serviceSeqID;
        }

        public abstract int GetServiceType();
        public abstract void Dispose();

        protected BasePacketHandler()
        {
            m_serviceSeqID = ServiceMgr.Instance.GenNextSeqID();
        }

        public abstract void HandlerClientPacket(PlayerSession playerSession, StructPacket packet);

        //处理其他服务器发过来的消息
        public abstract void HandlerServerPacket(uint serverID, StructPacket packet);

	    public void SendToPlayer<T>(long UserID,uint GateServerID,long SessionID, int iMsgID, ref T structMessage)
		    where T : struct, IStructMessage<T>
	    {
		    GateService.SendToGate(UserID
			    , GameServerUtils.GetApp().GetCluster()
			    , GateServerID
			    , SessionID
			    , iMsgID
			    , ref structMessage);
	    }

		public void SendToPlayer<T>(PlayerSession playerSession, int iMsgID, ref T structMessage)
            where T : struct, IStructMessage<T>
        {
            GateService.SendToGate(playerSession.UserID
                , GameServerUtils.GetApp().GetCluster()
                , playerSession.GateServerID
                , playerSession.SessionID
                , iMsgID
                , ref structMessage);
        }

        public void SendToPlayer<T>(PlayerOnGame player, int iMsgID, ref T structMessage)
            where T : struct, IStructMessage<T>
        {
            if(player == null)
            {
                TraceLog.Error("BasePacketHandler.SendToPlayer msgID {0}, player not online",
                    iMsgID);
                return;
            }

            if(player.SessionID == 0)
            {
                player.Trace("BasePacketHandler.SendToPlayer uid {0} session is 0, player not online",
                    player.UserID);
                return;
            }

            PlayerSession playerSession = GameServerUtils.GetPlayerTableOp().GetPlayerSession(player.SessionID);
            if (playerSession == null)
            {
                player.Error("BasePacketHandler.SendToPlayer uid {0} session {1} can not find session!",
                    player.UserID, player.SessionID);
                return;
            }

            SendToPlayer(playerSession, iMsgID, ref structMessage);
        }

        public void SendToPlayer<T>(PlayerSession playerSession, StructPacket packet)
            where T : struct, IStructMessage<T>
        {
            GateService.SendToGate(playerSession.UserID
                ,GameServerUtils.GetApp().GetCluster()
                , playerSession.GateServerID
                , playerSession.SessionID
                , packet.MsgID
                , ref packet.GetMessage<T>());
        }

        public void SendToPlayer<T>(PlayerOnGame player, StructPacket packet)
            where T : struct, IStructMessage<T>
        {
            if (player == null)
            {
                TraceLog.Error("BasePacketHandler.SendToPlayer msgID {0}, player not online",
                    packet.MsgID);
                return;
            }

            if (player.SessionID == 0)
            {
                player.Trace("BasePacketHandler.SendToPlayer uid {0} session is 0, player not online",
                    player.UserID);
                return;
            }

            PlayerSession playerSession = GameServerUtils.GetPlayerTableOp().GetPlayerSession(player.SessionID);
            if (playerSession == null)
            {
                player.Error("BasePacketHandler.SendToPlayer uid {0} session {1} can not find session!",
                    player.UserID, player.SessionID);
                return;
            }

            SendToPlayer<T>(playerSession, packet);
        }

        public void SendToPlayerByObjectID<T>(StructPacket packet)
            where T : struct, IStructMessage<T>
        {
            var playerSession = GameServerUtils.GetPlayerTableOp().GetPlayerSessionByUid(packet.ObjectID);
            if (playerSession != null)
            {
                SendToPlayer<T>(playerSession, packet);
            }
            else
            {
                TraceLog.Trace("DeskMsgHandler.SendToPlayerByObjectID uid {0} session not in table", packet.ObjectID);
            }
        }

        public static void BroadcastToGate<T>(int realmId, int iMsgID, ref T structMessage)
        where T : struct, IStructMessage<T>
        {
            Dictionary<uint, List<long>> gateSessionMap;
            if(realmId > 0)
            {
                gateSessionMap = GameServerUtils.GetPlayerTableOp().GetSameRealmIDPlayer(realmId);
            }
            else
            { 
                gateSessionMap = GameServerUtils.GetPlayerTableOp().GetAllPlayer();
            }
            
            if (gateSessionMap == null || gateSessionMap.Count == 0)
            {
                return;
            }
            foreach(var item in gateSessionMap)
            {
                var gateId = item.Key;
                var sessionIDList = item.Value;
                //广播给所有的玩家
                while (sessionIDList.Count > GateMsgDefine.TransMultiSessionCountMax)
                {
                    GateService.BroadcastToGate(0, GameServerUtils.GetApp().GetCluster(), gateId, sessionIDList.Take(GateMsgDefine.TransMultiSessionCountMax).ToList()
                        , iMsgID, ref structMessage);
                    sessionIDList.RemoveRange(0, GateMsgDefine.TransMultiSessionCountMax);
                }
                GateService.BroadcastToGate(0, GameServerUtils.GetApp().GetCluster(), gateId, sessionIDList
                    , iMsgID, ref structMessage);
            }
            
        }
    }
}