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



namespace Sog.Service
{
    public class GateSessionID
    {
        private static long SessionIDSeq = 0;
        static long nowStamp = 0;

        static object locker = new object();
        public static long GenNextID(uint serverID)
        {
            lock (locker)
            {
                long sessionIndex = ++SessionIDSeq;

                long iInstID = ServerIDUtils.GetInstanceID(serverID);
                if (nowStamp == 0)
                {
                    nowStamp = AppTime.GetNowSysSecond();
                }
                long sessionID = (iInstID << 48) + (nowStamp << 16) + sessionIndex;

                return sessionID;
            }

        }

        /// <summary>
        /// 简单判断一个id是否是sessionid
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public static bool IsGateSessionIDOrUserID(long id)
        {
            if(id >= (((long)1)<<48))
            {
                return true;
            }

            return false;
        }
    }
}