using ET;
using System.Collections.Generic;
using cfg.GfgCfg;

namespace GFGGame
{
    public class ItemExchangeCfgArray : SingletonBaseET<ItemExchangeCfgArray>
    {
        //根据已兑换次数和本次兑换次数计算所需消耗id和消耗数量
        public void GetMoneyIdAndNum(int itemId, int exchangedTimes, int exchangeTimesThis, out int costId,
            out int costNum, out int buyNum)
        {
            ItemExchangeCfg itemExchangeCfg = CommonDataManager.Tables.TblItemExchangeCfg.GetOrDefault(itemId);

            costId = itemExchangeCfg.CostId;
            costNum = 0;
            buyNum = 0;

            for (var i = exchangedTimes + 1; i <= exchangedTimes + exchangeTimesThis; i++)
            {
                GetCostAndBuyNum(itemExchangeCfg, i, out int _costNum, out int _buyNum);
                costNum += _costNum;
                buyNum += _buyNum;
            }
        }

        //根据第几次购买获取消耗货币个数
        public void GetCostAndBuyNum(ItemExchangeCfg itemExchangeCfg, int theExchangeTimes, out int costNum,
            out int buyNum)
        {
            costNum = 0;
            buyNum = 0;
            //每次从最高位检测
            if (itemExchangeCfg.Times.Count > 0)
            {
                for (var i = itemExchangeCfg.Times.Count - 1; i >= 0; i--)
                {
                    var time = itemExchangeCfg.Times[i];
                    if (theExchangeTimes >= time)
                    {
                        costNum = itemExchangeCfg.CostNum[i];
                        buyNum = itemExchangeCfg.Num;
                        break;
                    }
                }
            }
            else
            {
                costNum = itemExchangeCfg.CostNum[0];
                buyNum = itemExchangeCfg.Num;
            }
        }
    }
}