108 lines
4.5 KiB
C#
108 lines
4.5 KiB
C#
using System.Globalization;
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using Microsoft.EntityFrameworkCore;
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using YLErp.BLL;
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using YLErp.Modules.AppModule;
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namespace YLErp.Modules.ReportModule
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{
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/// <summary>
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/// 为结算确认书邮件准备交易编号和平仓总额模板变量。
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/// </summary>
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public static class SettlementMailTemplateHelper
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{
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/// <summary>
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/// 根据当前客户的确认书反查对应交易和平仓记录。
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/// 文档编号可能在不同文档类型中重复，因此必须同时匹配编号和类型。
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/// </summary>
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public static List<Datas> GetSettlementRows(YLContext dbContext, IEnumerable<trade_contract_document> documents, int clientId)
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{
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var documentKeys = documents
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.Where(document => !string.IsNullOrWhiteSpace(document.Code))
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.Select(document => BuildDocumentKey(document.Code, document.Type))
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.Distinct()
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.ToHashSet();
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if (documentKeys.Count == 0)
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{
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return new List<Datas>();
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}
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var contractCodes = documents.Select(document => document.Code).Distinct().ToList();
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var rows = (from relation in dbContext.trade_contract_r
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join tradeCash in dbContext.trade_cash on relation.TradeCashId equals tradeCash.id
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join tradeData in dbContext.trade on tradeCash.TradeId equals tradeData.id
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where contractCodes.Contains(relation.ContractCode)
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&& relation.IsValid
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&& !tradeCash.IsDeleted
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&& tradeData.ClientId == clientId
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select new
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{
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relation.ContractCode,
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relation.Type,
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Trade = tradeData,
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TradeCash = tradeCash
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}).AsNoTracking().ToList();
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return rows
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// 数据库先按编号缩小范围，再在内存中用“编号+类型”精确匹配附件。
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.Where(row => documentKeys.Contains(BuildDocumentKey(row.ContractCode, row.Type)))
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.Select(row => new Datas
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{
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trade = row.Trade,
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tradecash = row.TradeCash
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}).ToList();
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}
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/// <summary>
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/// 将批量加载的数据限制到当前结算日，避免跨日发送时变量汇总串日。
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/// </summary>
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public static List<Datas> ForValueDate(IEnumerable<Datas> rows, DateTime valueDate)
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{
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return (rows ?? Enumerable.Empty<Datas>())
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.Where(row => row?.tradecash != null && row.tradecash.ValueDate.Date == valueDate.Date)
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.ToList();
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}
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/// <summary>
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/// 将去重后的交易编号及客户视角平仓总额写入邮件模板参数。
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/// </summary>
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public static void PopulateSettlementFields(MailInfoRequestModel request, IEnumerable<Datas> rows)
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{
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ArgumentNullException.ThrowIfNull(request);
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// 同一平仓记录可能因关联多份文档重复出现，按 trade_cash.id 去重以避免重复计入金额。
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var distinctRows = (rows ?? Enumerable.Empty<Datas>())
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.Where(row => row?.trade != null && row.tradecash != null)
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.GroupBy(row => row.tradecash.id)
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.Select(group => group.First())
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.ToList();
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request.TradeNumber = string.Join(",", distinctRows
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.Select(row => row.trade.TradeNumber)
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.Where(number => !string.IsNullOrWhiteSpace(number))
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.Distinct()
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.OrderBy(number => number));
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if (distinctRows.Count == 0)
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{
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request.UnwindTotalAmount = string.Empty;
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return;
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}
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// trade_cash.Amount 为交易员视角，邮件展示需取反转换为客户视角。
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var customerAmount = -distinctRows.Sum(row => row.tradecash.Amount);
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if (customerAmount == 0)
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{
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// 消除浮点求和可能产生的 -0.00。
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customerAmount = 0;
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}
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request.UnwindTotalAmount = customerAmount.ToString("F2", CultureInfo.InvariantCulture);
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}
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private static string BuildDocumentKey(string code, string type)
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{
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return $"{code}\u001f{type}";
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}
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}
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}
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