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

using Sog;
using ProtoCSStruct;

namespace GameDB
{
    public class TransactionIdGen : Singleton<TransactionIdGen>
    {
        private long m_iSeq = 0;

        private object m_lock = new object();

        public string GenIDForExchangeCoupon(long uid, int itemid)
        {
            lock(m_lock)
            {
                if(m_iSeq == 0)
                {
                    m_iSeq = AppTime.GetNowSysMs();
                    m_iSeq = m_iSeq << 8;
                }

                m_iSeq++;

                return "coupon-" + uid.ToString() + "-" + itemid.ToString() + "-" + m_iSeq.ToString();
            }
        }
    }
}