namespace Infrastructure.StockData;

/// <summary>
/// SEIBro getSafeDpDutyDepoStatus(의무보호예수/반환) 응답 파서 — 순수 C#. 공용 SeibroXml envelope 입력.
/// 자연키(ISSUCO_CUSTNO, SHOTN_ISIN, SAFEDP_DT, OCCR_SEQ, DUTY_SAFEDP_RACD) 중 하나라도 없거나 비형식인 행은 건너뛴다.
/// ⚠️ SECN_KACD 는 실응답에서 코드가 아니라 명칭(보통주) 문자열이다(fixture 확인) — 문자열로 그대로 담는다.
/// 반환 관련 필드(RETURN_DT/RETURN_QTY)는 예수 행에서 빈값 → null.
/// </summary>
public static class SeibroLockupParser
{
    public sealed record Row(
        int IssucoCustno,
        string KorSecnNm,
        string? SecnKacd,
        string ShotnIsin,
        string? MartTpcd,
        string OccrSeq,
        DateOnly SafedpDt,
        long? SafedpQty,
        string DutySafedpRacd,
        DateOnly? ReturnDt,
        long? ReturnQty,
        long? TotalStkCnt
    );

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

        foreach (var fields in envelope.Rows)
        {
            var custno = SeibroFieldParse.Int(SeibroXml.GetOrNull(fields, "ISSUCO_CUSTNO"));
            var korSecnNm = SeibroXml.GetOrNull(fields, "KOR_SECN_NM")?.Trim();
            var shotnIsin = SeibroXml.GetOrNull(fields, "SHOTN_ISIN")?.Trim();
            var occrSeq = SeibroXml.GetOrNull(fields, "OCCR_SEQ")?.Trim();
            var safedpDt = SeibroFieldParse.Date(SeibroXml.GetOrNull(fields, "SAFEDP_DT"));
            var racd = SeibroXml.GetOrNull(fields, "DUTY_SAFEDP_RACD")?.Trim();

            if (custno is null || string.IsNullOrEmpty(korSecnNm) || string.IsNullOrEmpty(shotnIsin) || string.IsNullOrEmpty(occrSeq) || safedpDt is null || string.IsNullOrEmpty(racd))
            {
                continue;
            }

            rows.Add(new Row(
                custno.Value,
                korSecnNm,
                SeibroXml.GetOrNull(fields, "SECN_KACD")?.Trim(),
                shotnIsin,
                SeibroXml.GetOrNull(fields, "MART_TPCD")?.Trim(),
                occrSeq,
                safedpDt.Value,
                SeibroFieldParse.Long(SeibroXml.GetOrNull(fields, "SAFEDP_QTY")),
                racd,
                SeibroFieldParse.Date(SeibroXml.GetOrNull(fields, "RETURN_DT")),
                SeibroFieldParse.Long(SeibroXml.GetOrNull(fields, "RETURN_QTY")),
                SeibroFieldParse.Long(SeibroXml.GetOrNull(fields, "TOTAL_STK_CNT"))
            ));
        }

        return rows;
    }
}