using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Web;
using YLErp.Helpers;
using YLErp.DBModels;
using Org.BouncyCastle.Ocsp;
using YLErp.BLL.Eod;
using CsvHelper;
using YLErp.BLL;

namespace YLErp.Modules.SwapModule
{
    /// <summary>
    /// 互换成交流水服务
    /// </summary>
    public class SwapFlowImportService : YLBaseService
    {
        public SwapFlowImportService(OptUserInfo optUser) : base(optUser)
        {
        }
        public SwapFlowImportService(YLBaseService baseService) : base(baseService)
        {

        }
        /// <summary>
        /// 成交流水导入 excel
        /// </summary>
        /// <param name="streamIn">上传的文件</param>
        /// <param name="totalNum">总条数</param>
        /// <param name="successNum">成功条数</param>
        public void ImportSwapTradesFromExcel(Stream streamIn, out int totalNum, out int successNum)
        {
            totalNum = 0;
            successNum = 0;
            var rowIndex = 0;
            try
            {
                var ds = Office.ExcelHelper.ReadExcelAsDataSet(streamIn, new[] { 0 }, 0);

                if (ds.Tables.Count < 1 || ds.Tables[0].Rows.Count < 2)
                {
                    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 DataRowReaderHelper(table);
                rowIndex = 1;
                totalNum = table.Rows.Count - rowIndex;
                Dictionary<long, List<string>> clientUmsDic = new Dictionary<long, List<string>>();
                foreach (var row in table.Rows.Cast<DataRow>().Skip(rowIndex))
                {
                    rowIndex++;
                    if (row.ItemArray.All(n => string.IsNullOrWhiteSpace(n?.ToString())))
                    {
                        totalNum--;
                        continue;
                    }
                    reader.SetDataRow(row,rowIndex);
                    var swap_flow = new swap_flow();
                    swap_flow.FundAccount = reader.GetString("资金账号");
                    var uPattern = "^[0 - 9]{6,20}$";
                    Regex regex = new Regex(uPattern);
                    if (!string.IsNullOrEmpty(swap_flow.FundAccount)&&regex.IsMatch(swap_flow.FundAccount))
                    {
                        throw new ServiceException($"第{rowIndex}行资金账号应为20位以内的数字");
                    }
                    swap_flow.UnderlyingCode = reader.GetString("标的代码", true);
                    var underlying = DataCacheProvider.GetUnderlyingDataSource().GetData(swap_flow.UnderlyingCode);
                    swap_flow.UnderlyingName = underlying?.UnderlyingName;
                    var clientName = reader.GetString("交易对手方", true);
                    swap_flow.OccurTime = reader.GetDate("交易日期", true);
                    swap_flow.SettleDate = valuedateBLL.GetNonHoliday(swap_flow.OccurTime.Value).Date;
                    swap_flow.BsType = reader.GetString("买卖方向", true) == "B" ? (int)EnumDirection.Long : (int)EnumDirection.Short;
                    swap_flow.TradingAmount = reader.GetDecimal("成交金额") ?? 0;
                    swap_flow.TradingFee = reader.GetDecimal("交易费用") ?? 0;
                    swap_flow.TradingQty = reader.GetDecimal("成交数量") ?? 0;
                    if (swap_flow.TradingQty<=0)
                    {
                        throw new ServiceException($"第{rowIndex}行成交数量必须大于0");
                    }
                    swap_flow.DataState = (int)SwapFlowDateStateEnum.等待完成;
                    swap_flow.ContractSize= reader.GetDecimal("乘数") ?? 0;
                    swap_flow.TradingAmountAvg = reader.GetDecimal("成交全价") ?? 0;
                    swap_flow.TradingAmountFeeAvg = TradeFeeHelper.CalcPriceWithFee(swap_flow.TradingFee, swap_flow.TradingAmountAvg, swap_flow.TradingQty, swap_flow.BsType); 
                    swap_flow.ytm = reader.GetDecimalOrPercent("成交收益率",false,true) ?? 0;
                    swap_flow.TradingAmountNet = reader.GetDecimal("成交净价") ?? 0;
                    swap_flow.TradingAmountNetFee = TradeFeeHelper.CalcPriceWithFee(swap_flow.TradingFee, swap_flow.TradingAmountNet??0, swap_flow.TradingQty, swap_flow.BsType);
                    var isBond = underlying != null && underlying.IsBond();
                    if (isBond)
                    {
                        // 成交流水债券报价(×100形式)转入库小数(×0.01)，统一走 BondPriceConverter
                        swap_flow.TradingAmountAvg = BondPriceConverter.ToStorage(swap_flow.TradingAmountAvg);
                        swap_flow.TradingAmountFeeAvg = BondPriceConverter.ToStorage(swap_flow.TradingAmountFeeAvg);
                        // TradingAmountNet/NetFee 可空，null 时保持 null 语义（与原 *= 一致）
                        if (swap_flow.TradingAmountNet.HasValue)
                            swap_flow.TradingAmountNet = BondPriceConverter.ToStorage(swap_flow.TradingAmountNet.Value);
                        if (swap_flow.TradingAmountNetFee.HasValue)
                            swap_flow.TradingAmountNetFee = BondPriceConverter.ToStorage(swap_flow.TradingAmountNetFee.Value);
                    }
                    swap_flow.TradingAmountAvg = Math.Round(
                        swap_flow.TradingAmountAvg,
                        isBond ? ConsGlobal.PriceRound : ConsGlobal.SwapDeliveryPriceRound,
                        MidpointRounding.AwayFromZero);
                    if (!string.IsNullOrEmpty(clientName))
                    {
                        var client = DataCacheProvider.GetClientDataSource().AsQueryable(x=>x.Name== clientName).FirstOrDefault();
                        swap_flow.ClientId = client?.id;
                        swap_flow.ClientName = clientName;
                    }
                    swap_flow.OptId = UserId;
                    swap_flow.OptName = UserName;
                    swap_flow.OptTime = DateTime.Now;
                    DbContext.swap_flow.Add(swap_flow);
                    if (!clientUmsDic.ContainsKey(swap_flow.ClientId ?? 0))
                    {
                        clientUmsDic.Add(swap_flow.ClientId ?? 0, new List<string> { swap_flow.UnderlyingCode });
                    }
                    else
                    {
                        if (!clientUmsDic[swap_flow.ClientId ?? 0].Contains(swap_flow.UnderlyingCode))
                        {
                            clientUmsDic[swap_flow.ClientId ?? 0].Add(swap_flow.UnderlyingCode);
                        }
                    }
                    successNum++;
                }
                DbContext.SaveChanges();
                Task.Run(() =>
                {
                    RealtimePnlCalc.RealtimeSwapPosition(new OptUserInfo(0, "互换实时持仓服务", OptUserFrom.Service));
                });
                new RiskCacheService().refreshRiskCache(clientUmsDic);
            }
            catch (Exception ex)
            {
                LogFactory.GetLogger("导入互换成交流水").Error(ex);
                throw new ServiceException($"第{rowIndex}行,发生错误:{ex.Message}", ex);
            }
        }
    }
}