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

using Sog;

namespace Friend
{
    public static class FriendSvrIDUtils
    {
        public static int DBServerNum { get; private set; }

        public static int friendSvrNum { get; private set; }

        public static void Init(ServerApp app)
        {
            DBServerNum = app.GetCluster().GetChannelCount((int)ServerType.GameDb);
            TraceLog.Trace("FriendSvrIDUtils.Init DBServer channel count is {0}", DBServerNum);
            if (DBServerNum == 0)
            {
                TraceLog.Error("FriendSvrIDUtils.Init DBServer channel num is 0, use 1 instead");
                // 肯定会有1个DB, 默认值1, 信息发送仍然会失败, 但是这样错误日志能多打印些信息
                DBServerNum = 1;  
            }

            friendSvrNum = app.GetCluster().GetChannelCount((int) ServerType.Friend) + 1;
            TraceLog.Trace("FriendSvrIDUtils.Init FriendSvr num {0}", friendSvrNum);
        }

        public static uint GetDBServerID( long userId)
        {
            int dbIndex;

            //根据uid
            dbIndex = (int)(userId % DBServerNum);

            //最后一个,这么些是为了刚好直观匹配，比如10003在第三张表
            if (dbIndex == 0)
            {
                dbIndex = DBServerNum;
            }

            return ServerIDUtils.GetLevel1ServerIDByType(FriendServerUtils.GetAppID(), (int)ServerType.GameDb, (int)dbIndex);

        }

        public static uint GetDBServerID(PlayerInfoFriend playerInfo)
        {
            return GetDBServerID(playerInfo.UserID);
        }
    }
}