ANTOOZA-BACKEND/Infrastructure/StockData/SeibroSlbDealingParser.cs

namespace Infrastructure.StockData;

/// <summary>
/// SEIBro getSlbDealingByIsin(종목별 대차거래 현황) 응답 파서 — 순수 C#. 공용 SeibroXml envelope 입력.
/// ⚠️ 응답엔 ISIN·STD_DT 가 없다(fixture 확인) — 요청 파라미터(ISIN, STD_DT)를 수집 배치가 스탬핑한다.
/// 따라서 Row 는 대차 수치 필드만 담는다. 금액은 콤마 제거 후 long, 비율은 decimal(".01" 선행점 포함).
/// 모든 수치 필드가 없으면(빈 vector) 행이 생성되지 않는다.
/// </summary>
public static class SeibroSlbDealingParser
{
    public sealed record Row(
        long? TotIssuStkqty,
        long? TrQty,
        long? MatcQty,
        long? RedQty,
        long? SlbTrRemQty,
        long? FrinerLendRemAmt,
        decimal? FrinerLendRemRatio,
        long? NativeLendRemAmt,
        decimal? NativeLendRemRatio,
        long? FrinerBrwRemAmt,
        decimal? FrinerBrwRemRatio,
        long? NativeBrwRemAmt,
        decimal? NativeBrwRemRatio
    );

    public static IReadOnlyList<Row> Parse(SeibroXml.Envelope envelope)
    {
        var rows = new List<Row>();

        foreach (var fields in envelope.Rows)
        {
            rows.Add(new Row(
                SeibroFieldParse.Long(SeibroXml.GetOrNull(fields, "TOT_ISSU_STKQTY")),
                SeibroFieldParse.Long(SeibroXml.GetOrNull(fields, "TR_QTY")),
                SeibroFieldParse.Long(SeibroXml.GetOrNull(fields, "MATC_QTY")),
                SeibroFieldParse.Long(SeibroXml.GetOrNull(fields, "RED_QTY")),
                SeibroFieldParse.Long(SeibroXml.GetOrNull(fields, "SLB_TR_REM_QTY")),
                SeibroFieldParse.Long(SeibroXml.GetOrNull(fields, "FRINER_LEND_REM_AMT")),
                SeibroFieldParse.Decimal(SeibroXml.GetOrNull(fields, "FRINER_LEND_REM_RATIO")),
                SeibroFieldParse.Long(SeibroXml.GetOrNull(fields, "NATIVE_LEND_REM_AMT")),
                SeibroFieldParse.Decimal(SeibroXml.GetOrNull(fields, "NATIVE_LEND_REM_RATIO")),
                SeibroFieldParse.Long(SeibroXml.GetOrNull(fields, "FRINER_BRW_REM_AMT")),
                SeibroFieldParse.Decimal(SeibroXml.GetOrNull(fields, "FRINER_BRW_REM_RATIO")),
                SeibroFieldParse.Long(SeibroXml.GetOrNull(fields, "NATIVE_BRW_REM_AMT")),
                SeibroFieldParse.Decimal(SeibroXml.GetOrNull(fields, "NATIVE_BRW_REM_RATIO"))
            ));
        }

        return rows;
    }
}