using YLErp.BLL;
using YLErp.Modules;

namespace YLErp.CustomizedBizLogic
{
    /// <summary>
    /// 伴兴实业
    /// </summary>
    public class BizLogicBX : BizLogicDefault
    {
        /// <summary>
        /// 生成交易编号
        /// </summary>
        public override string GenerateTradeNumberBeforeConfirm(TradeNumberReqModel reqModel, YLContext db)
        {
            if (reqModel is null)
            {
                throw new ArgumentNullException(nameof(reqModel));
            }

            if (!string.IsNullOrWhiteSpace(reqModel.trade.TradeNumber)) { return reqModel.trade.TradeNumber; }
            lock (_clientCodeLock)
            {
                var clientPY = "";
                var date = reqModel.trade.TradeDate;
                var tradeNumbers = new List<string>();

                tradeNumbers = db.trade.Where(x => x.TradeDate.Value == date && x.ClientId == reqModel.clientId && x.ParentTradeId == 0).Select(x => x.TradeNumber).ToList();
                //获取导入
                if (reqModel.importTrades != null)
                {
                    tradeNumbers.AddRange(reqModel.importTrades.Select(O => O.TradeNumber));
                }
                var client = DataCacheProvider.GetClientDataSource().GetData(reqModel.clientId);
                if (client == null)
                {
                    throw new Exception("请先添加交易对手方");
                }
                if (string.IsNullOrWhiteSpace(client.Code))
                {
                    throw new Exception("生成交易编号失败，请先添加交易对手方(客户)代码");
                }
                clientPY = client.Code;

                var codePrefix = $"SHBX-{clientPY}-{date?.ToString("yyMMdd")}";
                var number = tradeNumbers.Count;
                var code = "";
                do
                {
                    number++;
                    code = number.ToString();
                    if (number <= 9)
                    {
                        code = code.PadLeft(2, '0');
                    }

                    code = codePrefix + code;
                    if (!tradeNumbers.Contains(code))
                    { break; }
                } while (true);
                return code;
            }
        }

        public override void GenerateClientCode(Client clientObj, IQueryable<Client> clientDbQuery)
        {
            if (!string.IsNullOrEmpty(clientObj.Number)) { return; }
            lock (_clientCodeLock)
            {
                var date = clientObj.ProtocolSignDate;
                if (!date.HasValue)
                {
                    throw new ServiceException("生成客户编号失败,因尚未填写商品类签署日期,客户名称:" + clientObj.Name);
                }
                var code = "";
                var codePrefix = $"SHBX-{date.Value.Year}";

                var existingClientCodes = clientDbQuery.Where(x => x.Number.StartsWith(codePrefix)).Select(x => x.Number).ToList();
                var number = existingClientCodes.Count;
                do
                {
                    number++;
                    code = codePrefix + number.ToString("0000");
                    if (!existingClientCodes.Contains(code))
                    { break; }
                } while (true);

                clientObj.Number = code;
            }
        }
    }
}