using System.Data;
using YLErp.Commons;

namespace YLErp.Modules.UnderlyingModule
{
    public class UnderlyingImportService : YLBaseService
    {
        public UnderlyingImportService(OptUserInfo userInfo) : base(userInfo) { }

        public void ImportExcel(Stream streamIn, out int totalNum, out int successNum)
        {
            totalNum = 0;
            successNum = 0;

            int rowIndex = 0;
            try
            {
                var ds = Office.ExcelHelper.ReadExcelAsDataSet(streamIn, new[] { 0 }, 1);

                if (ds.Tables.Count < 1 || ds.Tables[0].Rows.Count < 1)
                {
                    throw new ServiceException("读取导入数据失败:数据为空") { Tag = "111" };
                }

                var table = ds.Tables[0];
                var reader = new DataRowReader(table);

                totalNum = table.Rows.Count - rowIndex;

                foreach (var row in table.Rows.Cast<DataRow>())
                {
                    if (row.ItemArray.All(n => string.IsNullOrWhiteSpace(n?.ToString())))
                    {
                        totalNum--;
                        continue;
                    }

                    reader.SetDataRow(row);

                    using (var trans = BeginTransaction())
                    {
                        //映射导入数据
                        var um = MapUnderlying(reader);

                        //保存数据
                        new UnderlyingDalService(OptUser).SaveUnderlyingData(um);
                        successNum++;

                        trans.Commit();
                    }
                    rowIndex++;
                }
            }
            catch (ServiceException se)
            {
                if (se.Tag != null) throw;
                throw new ServiceException($"第{rowIndex + 2}行,发生错误:{se.Message}");
            }
        }

        private underlying_manager MapUnderlying(DataRowReader reader)
        {
            var umVariety = reader.GetString("标的品种", true);
            var variety = DataCacheProvider.GetVarietyDataSource().AsQueryable().Where(o => o.VarietyName == umVariety || o.VarietyCode == umVariety).FirstOrDefault();
            if (variety == null)
            {
                throw new Exception("未找到品种：" + umVariety);
            }
            var instrumentTypeCn = reader.GetString("标的小类（资产类型）", true);
            //var markShortName = reader.GetString("交易所", true);
            //var market = DataCacheProvider.GetMarketDataSource().AsQueryable().Where(o => o.MarketShortName == markShortName || o.MarketName== markShortName || o.ExchangeNo == markShortName).FirstOrDefault();
            //if (market == null)
            //{
            //    throw new Exception("未找到交易所：" + markShortName);
            //}

            var um = new underlying_manager()
            {
                //MarketCode = market.ExchangeNo,
                UnderlyingCode = reader.GetString("标的代码", true),
                UnderlyingName = reader.GetString("标的名称", true),
                UnderlyingEnName = reader.GetString("标的英文名", false),
                UnderlyingTypeId = variety.id,
                UnderlyingInstrumentType = ConsGlobal.InstrumentType.GetFromDesc(instrumentTypeCn),
                BBGTicker = reader.GetString("BBGTicker", false),
                ContractSize = reader.GetDouble("合约乘数", false) ?? 0,
                MaturityDate = reader.GetDate("标的到期日", false),
                CloseDate = reader.GetDate("标的交割日", false),
                UnderlyingDesc = reader.GetString("描述", false),
                LaunchState = "1",
                UnderlyingStatus = "正常运行",
                OptId = UserId,
                OptName = UserName,
                OptDate = DateTime.Now
            };

            return um;
        }
    }
}