diff --git a/Framework/YLErp.Core/Models/SwapEndConfirmModel.cs b/Framework/YLErp.Core/Models/SwapEndConfirmModel.cs index 55ddcf9e..234f5c8a 100644 --- a/Framework/YLErp.Core/Models/SwapEndConfirmModel.cs +++ b/Framework/YLErp.Core/Models/SwapEndConfirmModel.cs @@ -46,6 +46,27 @@ namespace YLErp.Models public string Quantity { get; set; } + /// 融资腿挂钩的基准利率代码;未挂钩时展示“固定利率”。 + public string BaseRate { get; set; } + + /// ETF 在持有期间产生的客户视角分红金额。 + public string PeriodDividend { get; set; } + + /// 现券交易期初成交收益率。 + public string InitYtm { get; set; } + + /// 利率收益金额除以标的名义本金得到的绝对浮动利率。 + public string FloatRateAbs { get; set; } + + /// InterestMode = 5 的期初预付金方向汇总金额。 + public string InitialMargin { get; set; } + + /// InterestMode = 6 且结算日前已生效的追加预付金方向汇总金额。 + public string AdditionalMargin { get; set; } + + /// 净额结算金额加期初预付金、追加预付金后的到期结算金额。 + public string MaturitySettlementAmount { get; set; } + /// /// 期末标的结算收益率(EQD-6953)。普通债券类收益互换平仓收益率,展示态百分数, /// 固定 4 位小数不去零("0.0000");非债券/历史无值时为空串。 diff --git a/Plugins/YLErp.Plugins.GuoLian/App_Docs/settlement_template/nodma_01.xlsx b/Plugins/YLErp.Plugins.GuoLian/App_Docs/settlement_template/nodma_01.xlsx index 0415cc61..1b289c00 100644 Binary files a/Plugins/YLErp.Plugins.GuoLian/App_Docs/settlement_template/nodma_01.xlsx and b/Plugins/YLErp.Plugins.GuoLian/App_Docs/settlement_template/nodma_01.xlsx differ diff --git a/Plugins/YLErp.Plugins.GuoLian/DocumentGenerator/TradeSettleBillGenerator.cs b/Plugins/YLErp.Plugins.GuoLian/DocumentGenerator/TradeSettleBillGenerator.cs index adbb66b5..7d851a7f 100644 --- a/Plugins/YLErp.Plugins.GuoLian/DocumentGenerator/TradeSettleBillGenerator.cs +++ b/Plugins/YLErp.Plugins.GuoLian/DocumentGenerator/TradeSettleBillGenerator.cs @@ -4,6 +4,7 @@ using YLErp.DBModels; using YLErp.DBModels.Consts; using YLErp.DBModels.Enums; using YLErp.Models; +using YLErp.Modules.TradeModule.DocGenerateModule; using YLErp.Plugins.TradeDocGenerator; using YLErp.Plugins.TradeDocGenerator.Abstracts; using YLErp.QdpModule; @@ -23,6 +24,7 @@ namespace YLErp.Plugins.GuoLian.DocumentGenerator protected override void PrepareViewData(Dictionary dic) { + // 普通 XLSX 结算单的公共上下文一次性加载,后续按平仓流水在内存中关联。 var client = Context.GetClient(); var flowEvents = Context.GetFlowEvents(); var allFlowEvents = Context.GetAllFlowEvents(); @@ -35,16 +37,18 @@ namespace YLErp.Plugins.GuoLian.DocumentGenerator foreach (var flowEventGroup in flowEvents) { + // 为每条平仓流水组装交易、初始持仓腿及同 EventId 的结算流水。 var tradeId = flowEventGroup.SwapTradeId; var positions = swapPositions.Where(x => x.SwapTradeId == tradeId && x.IsInitial).ToList(); - var posi = positions.FirstOrDefault(f => f.id == flowEventGroup.PositionId); - var unwindFlowEvents = allFlowEvents.Where(x => x.EventId == flowEventGroup.EventId); - var trade = trades.FirstOrDefault(x => x.id == tradeId); - var preSettleDate = flowEventGroup.UnwindDate.Value.AddDays(-1); - var swapEodPositions = Context.GetEodPositions(tradeId, preSettleDate); + var posi = positions.FirstOrDefault(f => f.id == flowEventGroup.PositionId) + ?? throw new ServiceException($"平仓事件{flowEventGroup.id}未找到对应初始持仓"); + var unwindFlowEvents = allFlowEvents.Where(x => x.EventId == flowEventGroup.EventId).ToList(); + var trade = trades.OfType().FirstOrDefault(x => x.id == tradeId); + if (trade == null) + { + throw new ServiceException($"平仓事件{flowEventGroup.id}未找到对应交易"); + } var tradeExtend = tradeExtends.FirstOrDefault(x => x.TradeId == tradeId); - var ratio = posi.PositionType == (int)PositionTypeFlag.Long ? 1 : -1; - ExcelReportModel row = new ExcelReportModel(); var confirmNo = Context.Gettrade_contract_r(tradeId, ContractTypeEnum.Trade); if (string.IsNullOrEmpty(confirmNo)) { @@ -52,78 +56,40 @@ namespace YLErp.Plugins.GuoLian.DocumentGenerator // 报错交易常是扩张拉入的同客户同日平仓,并非用户勾选的那笔。 throw new ServiceException($"{trade.TradeNumber}未生成交易确认书(平仓事件id={flowEventGroup.id}, tradeId={tradeId}, 客户={client.Name}, 平仓日={flowEventGroup.UnwindDate?.ToString("yyyy-MM-dd")});请先为该笔交易生成交易确认书后重试"); } - row.TradeNumber = confirmNo; - row.ClientName = client.Name; - row.UnderlyingCode = flowEventGroup.UnderlyingCode; - row.StartDate = trade.StartDate.Value.ToString("yyyy-MM-dd"); - var eventDate = flowEventGroup.UnwindDate.Value; - row.EventDate = eventDate.ToString("yyyy-MM-dd"); - var payDate = flowEventGroup.PayDate; - var sr = tradeExtend == null ? 0 : tradeExtend.ExtendObj.SettlementRules; - if (!payDate.HasValue) - { - payDate = QdpCalendarHelper.GetNonHoliday(flowEventGroup.EventDate.AddDays(sr)); - } - row.PayDate = payDate.Value.ToString("yyyy-MM-dd"); - row.ClosePrice = ((flowEventGroup.TradingAmountAvg) * 100).ToString("0.00000000"); - decimal interestRate = unwindFlowEvents.Where(x => ConsTrade.InterestModels.Contains(x.InterestMode)).Sum(s => s.InterestRate); - row.InterestRate = interestRate.ToString("0.00%"); - var PosiNotionalValue = flowEventGroup.Quantity * flowEventGroup.ContractSize * posi.PosiGrossPrice; - // EQD-6953 期末标的结算收益率:平仓簿记时随 UnwindData 存进 swap_event.EventData, - // 此处从浮动腿(PositionType>0)回读。存储态=展示态百分数(6.3721),导出固定 4 位不去零。 - decimal? exitYtm = null; + + // 历史流水可能未落 PayDate,按交易结算规则补算后再进入统一构造器。 + flowEventGroup.PayDate = ResolvePayDate(flowEventGroup, tradeExtend); + + // UnwindData 提供平仓名义本金及浮动腿期末收益率,均属于事件快照数据。 + UnwindData? unwindData = null; if (flowEventGroup.EventId.HasValue) { var swapEvent = Context.GetEvent(flowEventGroup.EventId.Value); if (swapEvent != null) { - swapEvent.unwindData = JsonHelper.Deserialize(swapEvent.EventData); - PosiNotionalValue = swapEvent.unwindData.CloseNotionalValue; - exitYtm = swapEvent.unwindData.FlowEvents? - .FirstOrDefault(f => f.PositionType > 0)? - .ExitYtm; + unwindData = JsonHelper.Deserialize(swapEvent.EventData); } } - row.ExitYtm = exitYtm?.ToString("0.0000") ?? string.Empty; - row.Quantity = flowEventGroup.Quantity.ToString("0.00"); - row.PosiNotionalValue = PosiNotionalValue.ToString("0.00"); - row.PosiNetPrice = (posi.PosiGrossPrice * 100).ToString("0.00000000"); - //var tradingFee = (flowEventGroup.TradingAmountFeeAvg- posi.PosiNetPrice- flowEventGroup.TradingAmountAvg+ posi.PosiGrossPrice)* PosiNotionalValue* ratio; - var tradingFee = flowEventGroup.TradingFee + flowEventGroup.TradingFeePending; - row.Fee = (-tradingFee).ToString("0.00"); - var RateDays = (eventDate - trade.StartDate.Value).Days; - RateDays = RateDays < 0 ? 0 : RateDays; - row.RateDays = RateDays.ToString(); - var MarginAmout = positions.Where(x => x.InterestMode == (int)InterestModeEnum.初始预付金).Sum(s => s.InterestPrincipalFix * (s.InterestDirection == (int)SwapDirectionEnum.收取 ? 1 : -1)); - row.MarginAmout = Math.Abs(MarginAmout).ToString("0.00"); - var MarginRebateRate = positions.Where(x => x.InterestMode == (int)InterestModeEnum.初始预付金).Sum(s => s.InterestRateDefault); - row.MarginRebateRate = MarginRebateRate.ToString("0.00%"); + var underlying = Context.GetTradeUnderlying(flowEventGroup.UnderlyingCode); + var closeNotionalValue = unwindData?.CloseNotionalValue + ?? flowEventGroup.Quantity * flowEventGroup.ContractSize * posi.PosiGrossPrice; - var MarginInterestAmount = unwindFlowEvents.Where(x => ConsTrade.InterestMarginModels.Contains(x.InterestMode)).Sum(s => s.InterestClosePnL); - row.MarginInterestAmount = (-MarginInterestAmount).ToString("0.00"); - - var InterestAmount = unwindFlowEvents.Where(x => ConsTrade.InterestModels.Contains(x.InterestMode)).Sum(s => s.InterestClosePnL) * -1; - row.InterestAmount = InterestAmount.ToString("0.00"); - - //var lastInterestAmount= swapEodPositions.Where(x => ConsTrade.InterestModels.Contains(x.InterestMode)).Sum(s => s.InterestIncomeSum); - //var lastPosiNotionalValue = swapEodPositions.Sum(s=>s.PosiNotionalValue); - //var InterestAmount = lastPosiNotionalValue==0?0: - lastInterestAmount* PosiNotionalValue/ lastPosiNotionalValue; - //row.InterestAmount = InterestAmount.ToString("0.00"); - - //var lastMarginAmount = swapEodPositions.Where(x => ConsTrade.InterestMarginModels.Contains(x.InterestMode)).Sum(s => s.InterestIncomeSum); - //var MarginInterestAmount = lastMarginAmount == 0 ? 0 : -lastMarginAmount * PosiNotionalValue / lastMarginAmount; - //row.MarginInterestAmount = MarginInterestAmount.ToString("0.00"); - var FloatRate = PosiNotionalValue == 0 ? 0 : InterestAmount / PosiNotionalValue; - row.FloatRate = FloatRate.ToString("0.0000%"); - var PosiPnl = -flowEventGroup.MarkClosePnl; - row.PosiPnl = PosiPnl.ToString("0.00"); - var markClosePnl = -flowEventGroup.FloatPnlSum; - row.MarkClosePnl = markClosePnl.ToString("0.00"); - row.DividendIn = (-flowEventGroup.DividendIn).ToString("0.00"); - var marginBackAmount = unwindFlowEvents.Where(x => ConsTrade.InterestMarginModels.Contains(x.InterestMode)).Sum(s => s.InterestPrincipal); - var NetSettleAmout = unwindFlowEvents.Sum(x => x.InterestClosePnL) * -1 + flowEventGroup.FloatPnlSum * -1 + marginBackAmount; - row.NetSettleAmout = NetSettleAmout.ToString("0.00"); + // 行构造器统一处理客户视角、结算公式、品种差异和模板展示精度。 + var row = SwapSettlementBillRowBuilder.Build(new SwapSettlementBillRowInput + { + ConfirmNo = confirmNo, + ClientName = client.Name, + Trade = trade, + CloseFlow = flowEventGroup, + EventFlows = unwindFlowEvents, + Positions = positions, + UnderlyingInstrumentType = underlying?.UnderlyingInstrumentType, + CloseNotionalValue = closeNotionalValue, + ExitYtm = unwindData?.FlowEvents? + .FirstOrDefault(x => x.PositionType > 0)?.ExitYtm, + IncludePeriodPaymentInNetting = (tradeExtend?.ExtendObj?.DividendPayDate ?? 1) == 0 + }); table.Add(row); } outPut.table = table; @@ -133,6 +99,7 @@ namespace YLErp.Plugins.GuoLian.DocumentGenerator protected override void PrepareViewData(Dictionary dic) { + // DMA/定义文件型结算确认书沿用原 DOCX 数据结构,与普通 XLSX 模板相互独立。 var client = Context.GetClient(); if (string.IsNullOrEmpty(client.SettleFileNumber)) { @@ -191,6 +158,8 @@ namespace YLErp.Plugins.GuoLian.DocumentGenerator { var trades = Context.Trades; var templatePath = string.Empty; + + // 多空组合及定义文件型债券使用 DMA DOCX,其余普通结算单使用 27 列 XLSX。 if (trades.Any(s => s.StructureType == "多空组合" || s.StructureType == "定义文件型债券收益互换")) { templatePath = MosPathHelper.Combine(GlobalConfig.PluginFolder, "App_Docs/settlement_template/dma_01.docx"); @@ -209,13 +178,33 @@ namespace YLErp.Plugins.GuoLian.DocumentGenerator var valueDate = eventDate.ToString("yyyy-MM-dd"); var count = Context.GetDMASelttementCount(client.id, eventDate); var countStr = count == 0 ? "" : "-" + (count + 1).ToString(); - var FullName = $"结算单-{client.Name}-{valueDate}{countStr}"; if (trades.Any(s => s.StructureType == "多空组合" || s.StructureType == "定义文件型债券收益互换")) { - FullName = $"{client.Name}-结算确认书-{valueDate}-交易平仓{countStr}"; + var FullName = $"{client.Name}-结算确认书-{valueDate}-交易平仓{countStr}"; return $"{FullName}.docx"; } - return $"{FullName}.xlsx"; + + // 普通结算单以支付日命名;同一附件中的支付日必须唯一。 + var tradeExtends = Context.GetTrade_Extends(trades.Select(x => x.id).ToList()); + var payDate = SwapSettlementBillRowBuilder.GetSinglePayDate( + flowEvents.Select(flow => (DateTime?)ResolvePayDate( + flow, + tradeExtends.FirstOrDefault(x => x.TradeId == flow.SwapTradeId)))); + return SwapSettlementBillRowBuilder.BuildOutputFileName(client.Name, payDate, count); + } + + /// + /// 优先使用平仓流水已保存的支付日;历史数据缺失时按事件日和交易结算规则补算。 + /// + private static DateTime ResolvePayDate(swap_flow_event flowEvent, trade_extend? tradeExtend) + { + if (flowEvent.PayDate.HasValue) + { + return flowEvent.PayDate.Value; + } + + var settlementRules = tradeExtend?.ExtendObj?.SettlementRules ?? 0; + return QdpCalendarHelper.GetNonHoliday(flowEvent.EventDate.AddDays(settlementRules)); } } } diff --git a/YLErpDAL/Modules/SwapModule/EodPnlCalculator.cs b/YLErpDAL/Modules/SwapModule/EodPnlCalculator.cs index 3532be45..62a831af 100644 --- a/YLErpDAL/Modules/SwapModule/EodPnlCalculator.cs +++ b/YLErpDAL/Modules/SwapModule/EodPnlCalculator.cs @@ -148,8 +148,9 @@ namespace YLErp.Modules.SwapModule /// /// 计算预付金利率。多条初始/追加预付金腿按本金绝对值加权, /// 不按收付方向轧差,避免相反方向本金抵消后放大利率。 + /// 对外公开以便结算单与每日估值复用同一计算口径。 /// - internal static decimal CalculateWeightedMarginRate(IEnumerable margins) + public static decimal CalculateWeightedMarginRate(IEnumerable margins) { var marginList = margins.ToList(); var totalWeight = marginList.Sum(x => Math.Abs(x.InterestPrincipalFix)); diff --git a/YLErpDAL/Modules/SwapModule/SwapEodPositionService.cs b/YLErpDAL/Modules/SwapModule/SwapEodPositionService.cs index d13a96ec..f9fb7204 100644 --- a/YLErpDAL/Modules/SwapModule/SwapEodPositionService.cs +++ b/YLErpDAL/Modules/SwapModule/SwapEodPositionService.cs @@ -3556,7 +3556,7 @@ namespace YLErp.Modules.SwapModule // 主查询分页后再取同交易、同估值日的全部辅助腿,避免利息/保证金归集跨估值日串数据。 var eodPositions = DbContext.eod_swap_position.Where(interestPredicate).ToList(); var marginPositions = DbContext.swap_position - .Where(x => tradeIds.Contains(x.SwapTradeId) && MarginModes.Contains(x.InterestMode) && x.IsInitial && !x.Invalid) + .Where(x => tradeIds.Contains(x.SwapTradeId) && MarginModes.ForLinq.Contains(x.InterestMode) && x.IsInitial && !x.Invalid) .ToList(); var tradeExtends = DbContext.trade_extend.Where(x => tradeIds.Contains(x.TradeId)).ToList(); Dictionary tradeDic = new Dictionary(); diff --git a/YLErpDAL/Modules/TradeModule/DocGenerateModule/SwapSettlementBillRowBuilder.cs b/YLErpDAL/Modules/TradeModule/DocGenerateModule/SwapSettlementBillRowBuilder.cs new file mode 100644 index 00000000..2f49e8e9 --- /dev/null +++ b/YLErpDAL/Modules/TradeModule/DocGenerateModule/SwapSettlementBillRowBuilder.cs @@ -0,0 +1,204 @@ +using YLErp.DBModels; +using YLErp.DBModels.Consts; +using YLErp.DBModels.Enums; +using YLErp.Models; +using YLErp.Modules.SwapModule; +using YLErp.Modules.SwapModule.ReturnLegs; + +namespace YLErp.Modules.TradeModule.DocGenerateModule; + +/// +/// 构造普通收益互换结算单单行数据所需的业务输入。 +/// 数据均来自平仓事件及其关联交易,避免依赖平仓后可能已不存在的日终持仓。 +/// +public sealed class SwapSettlementBillRowInput +{ + /// 有效交易确认书编号。 + public string ConfirmNo { get; set; } + + /// 结算单所属交易对手名称。 + public string ClientName { get; set; } + + /// 平仓事件关联的收益互换交易。 + public trade Trade { get; set; } + + /// 当前生成行对应的平仓流水。 + public swap_flow_event CloseFlow { get; set; } + + /// 与当前平仓事件同 EventId 的利息、预付金等流水。 + public IReadOnlyList EventFlows { get; set; } + + /// 交易的初始持仓腿,用于识别融资腿、浮动腿和预付金。 + public IList Positions { get; set; } + + /// 标的品种,用于区分现券付息、ETF 分红和收益率字段。 + public string UnderlyingInstrumentType { get; set; } + + /// 本次平仓标的名义本金。 + public decimal CloseNotionalValue { get; set; } + + /// 平仓事件浮动腿记录的期末结算收益率(展示态数值)。 + public decimal? ExitYtm { get; set; } + + /// 期间付息或分红是否计入本次净额结算。 + public bool IncludePeriodPaymentInNetting { get; set; } +} + +/// +/// 将平仓事件数据按国联普通结算单口径计算并格式化为模板行。 +/// +public static class SwapSettlementBillRowBuilder +{ + /// + /// 计算一条结算记录。金额方向统一转换为客户视角,返回值已按模板精度格式化。 + /// + public static ExcelReportModel Build(SwapSettlementBillRowInput input) + { + ArgumentNullException.ThrowIfNull(input); + ArgumentNullException.ThrowIfNull(input.Trade); + ArgumentNullException.ThrowIfNull(input.CloseFlow); + + var positions = input.Positions ?? Array.Empty(); + var eventFlows = input.EventFlows ?? Array.Empty(); + + // 三个业务日期是结算单和文件命名的必填项,缺失时直接阻止生成不完整附件。 + var startDate = input.Trade.StartDate + ?? throw new ServiceException("结算单缺少交易起始日"); + var eventDate = input.CloseFlow.UnwindDate + ?? throw new ServiceException("结算单缺少结算日"); + var payDate = input.CloseFlow.PayDate + ?? throw new ServiceException("结算单缺少支付日"); + + // 将同一事件的普通利息与预付金利息分开;预付金本金仅统计结算日前已生效的腿。 + var floatingPosition = positions.FirstOrDefault(x => x.PositionType > 0) + ?? positions.FirstOrDefault(x => !ConsTrade.InterestMarginModels.Contains(x.InterestMode)); + var interestEvents = eventFlows + .Where(x => ConsTrade.InterestModels.Contains(x.InterestMode)) + .ToList(); + var marginEvents = eventFlows + .Where(x => ConsTrade.InterestMarginModels.Contains(x.InterestMode)) + .ToList(); + var effectiveMargins = positions + .Where(x => ConsTrade.InterestMarginModels.Contains(x.InterestMode) + && (!x.HappenDate.HasValue || x.HappenDate.Value <= eventDate)) + .ToList(); + + // 数据库存储的是系统/券商视角金额,结算单统一取反为客户视角;预付金本金按收付方向换算。 + var interestAmount = -interestEvents.Sum(x => x.InterestClosePnL); + var floatingAmount = -input.CloseFlow.MarkClosePnl; + var fee = -(input.CloseFlow.TradingFee + input.CloseFlow.TradingFeePending); + var marginInterest = -marginEvents.Sum(x => x.InterestClosePnL); + var periodAmount = -input.CloseFlow.DividendIn; + var initialMargin = SumMargin(effectiveMargins, InterestModeEnum.初始预付金); + var additionalMargin = SumMargin(effectiveMargins, InterestModeEnum.追加预付金); + + // 净额结算按实际轧差项求和;到期结算在净额基础上返还或收取期初、追加预付金。 + var netSettlementAmount = interestAmount + floatingAmount + fee + marginInterest + + (input.IncludePeriodPaymentInNetting ? periodAmount : 0m); + var maturitySettlementAmount = netSettlementAmount + initialMargin + additionalMargin; + var floatRateAbs = input.CloseNotionalValue == 0m + ? 0m + : interestAmount / input.CloseNotionalValue; + + // 同一数据库字段在模板中按标的类型拆分:现券展示期间付息,ETF 展示期间分红。 + var isCashBond = ConsGlobal.InstrumentType.IsBond(input.UnderlyingInstrumentType); + var isEtf = ConsGlobal.InstrumentType.Fund.Equals( + input.UnderlyingInstrumentType, + StringComparison.OrdinalIgnoreCase); + + // 此处集中完成模板字段映射和展示精度处理,生成器只负责组装原始业务数据。 + return new ExcelReportModel + { + TradeNumber = input.ConfirmNo, + ClientName = input.ClientName, + StartDate = startDate.ToString("yyyy-MM-dd"), + EventDate = eventDate.ToString("yyyy-MM-dd"), + PayDate = payDate.ToString("yyyy-MM-dd"), + UnderlyingCode = input.CloseFlow.UnderlyingCode, + BaseRate = ResolveBaseRate(positions), + InterestRate = interestEvents.Sum(x => x.InterestRate).ToString("0.00%"), + PosiNotionalValue = input.CloseNotionalValue.ToString("0.00"), + Quantity = input.CloseFlow.Quantity.ToString("0.00"), + DividendIn = isCashBond ? periodAmount.ToString("0.00") : string.Empty, + PeriodDividend = isEtf ? periodAmount.ToString("0.00") : string.Empty, + PosiNetPrice = ((floatingPosition?.PosiGrossPrice ?? 0m) * 100m).ToString("0.00000000"), + InitYtm = isCashBond && input.Trade.InitYtm.HasValue + ? input.Trade.InitYtm.Value.ToString("0.####%") + : string.Empty, + ClosePrice = (input.CloseFlow.TradingAmountAvg * 100m).ToString("0.00000000"), + ExitYtm = isCashBond && input.ExitYtm.HasValue + ? input.ExitYtm.Value.ToString("0.0000") + : string.Empty, + RateDays = Math.Max(0, (eventDate - startDate).Days + 1).ToString(), + FloatRateAbs = floatRateAbs.ToString("0.0000%"), + FloatRate = floatRateAbs.ToString("0.0000%"), + InterestAmount = interestAmount.ToString("0.00"), + PosiPnl = floatingAmount.ToString("0.00"), + Fee = fee.ToString("0.00"), + MarginRebateRate = EodPnlCalculator.CalculateWeightedMarginRate(effectiveMargins) + .ToString("0.0000%"), + MarginInterestAmount = marginInterest.ToString("0.00"), + InitialMargin = initialMargin.ToString("0.00"), + AdditionalMargin = additionalMargin.ToString("0.00"), + MarginAmout = Math.Abs(initialMargin).ToString("0.00"), + MarkClosePnl = (-input.CloseFlow.FloatPnlSum).ToString("0.00"), + NetSettleAmout = netSettlementAmount.ToString("0.00"), + MaturitySettlementAmount = maturitySettlementAmount.ToString("0.00") + }; + } + + /// + /// 校验同一附件中的支付日唯一,并返回用于文件名的支付日。 + /// + public static DateTime GetSinglePayDate(IEnumerable payDates) + { + var dates = payDates?.ToList() + ?? throw new ServiceException("结算单缺少支付日"); + if (dates.Count == 0 || dates.Any(x => !x.HasValue)) + { + throw new ServiceException("结算单缺少支付日"); + } + + var distinctDates = dates.Select(x => x.Value.Date).Distinct().OrderBy(x => x).ToList(); + if (distinctDates.Count != 1) + { + throw new ServiceException( + $"同一结算单存在多个支付日:{string.Join("、", distinctDates.Select(x => x.ToString("yyyy-MM-dd")))}"); + } + + return distinctDates[0]; + } + + /// + /// 按交易对手和支付日生成普通结算单文件名;重复生成时追加顺序号。 + /// + public static string BuildOutputFileName(string clientName, DateTime payDate, int count) + { + var suffix = count == 0 ? string.Empty : $"-{count + 1}"; + return $"结算单-{clientName}-{payDate:yyyy-MM-dd}{suffix}.xlsx"; + } + + /// + /// 按预付金类型汇总本金,并根据收付方向转换为结算方向金额。 + /// + private static decimal SumMargin( + IEnumerable margins, + InterestModeEnum interestMode) + { + return margins + .Where(x => x.InterestMode == (int)interestMode) + .Sum(x => x.InterestPrincipalFix * DirectionRatio.ReceivePay(x.InterestDirection)); + } + + /// + /// 从非预付金融资腿读取挂钩基准;未配置浮动基准时按固定利率展示。 + /// + private static string ResolveBaseRate(IEnumerable positions) + { + return positions + .Where(x => !ConsTrade.InterestMarginModels.Contains(x.InterestMode)) + .Select(x => x.FloatRateUnderlyingCode) + .FirstOrDefault(x => !string.IsNullOrWhiteSpace(x)) + ?? "固定利率"; + } +}