using System.ComponentModel.DataAnnotations;

namespace Domain.Entities.Stocks;

/// <summary>
/// SEIBro 권리기준일 (getStddtInfo) — 발행회사별 권리 발생 기준일·사유 (Wave 1).
/// 자연키 UNIQUE (IssucoCustno, RgtStdDt, RgtRacd, RgtRsnDetailSortCd).
/// Wave 3(총회·상호변경·단주 등)의 이벤트 발견 소스 — RGT_RACD 로 후속 기업행위 API 호출 대상을 판별한다.
/// (예: 001/002/003/009 → 총회, 204 → 상호변경)
/// </summary>
public class RightsBaseDate
{
    [Key]
    public int ID { get; private set; }

    /// <summary>발행회사 고객번호 (ISSUCO_CUSTNO)</summary>
    public int IssucoCustno { get; private set; }

    /// <summary>대표종목명 (REP_SECN_NM)</summary>
    public string RepSecnNm { get; private set; } = default!;

    /// <summary>권리기준일자 (RGT_STD_DT)</summary>
    public DateOnly RgtStdDt { get; private set; }

    /// <summary>권리사유코드 (RGT_RACD) — 001정기총회 … 907이익소각</summary>
    public string RgtRacd { get; private set; } = default!;

    /// <summary>권리사유명 (RGT_RACD_NM)</summary>
    public string? RgtRacdNm { get; private set; }

    /// <summary>권리사유세부유형코드 (RGT_RSN_DTAIL_SORT_CD)</summary>
    public string RgtRsnDetailSortCd { get; private set; } = default!;

    public DateTime UpdatedAt { get; private set; } = DateTime.UtcNow;

    private RightsBaseDate() { }

    public static RightsBaseDate Create(
        int issucoCustno,
        string repSecnNm,
        DateOnly rgtStdDt,
        string rgtRacd,
        string? rgtRacdNm,
        string rgtRsnDetailSortCd)
    {
        if (string.IsNullOrWhiteSpace(repSecnNm))
        {
            throw new ArgumentException("repSecnNm required", nameof(repSecnNm));
        }

        if (string.IsNullOrWhiteSpace(rgtRacd))
        {
            throw new ArgumentException("rgtRacd required", nameof(rgtRacd));
        }

        if (string.IsNullOrWhiteSpace(rgtRsnDetailSortCd))
        {
            throw new ArgumentException("rgtRsnDetailSortCd required", nameof(rgtRsnDetailSortCd));
        }

        return new RightsBaseDate
        {
            IssucoCustno = issucoCustno,
            RepSecnNm = repSecnNm.Trim(),
            RgtStdDt = rgtStdDt,
            RgtRacd = rgtRacd.Trim(),
            RgtRacdNm = string.IsNullOrWhiteSpace(rgtRacdNm) ? null : rgtRacdNm.Trim(),
            RgtRsnDetailSortCd = rgtRsnDetailSortCd.Trim()
        };
    }

    /// <summary>재수집 반영 — 이름/사유명 변경 시에만 UpdatedAt 갱신 (자연키는 불변)</summary>
    public void Update(string repSecnNm, string? rgtRacdNm)
    {
        var changed = false;

        if (!string.IsNullOrWhiteSpace(repSecnNm) && RepSecnNm != repSecnNm.Trim())
        {
            RepSecnNm = repSecnNm.Trim();
            changed = true;
        }

        var normalizedRacdNm = string.IsNullOrWhiteSpace(rgtRacdNm) ? null : rgtRacdNm.Trim();
        if (RgtRacdNm != normalizedRacdNm)
        {
            RgtRacdNm = normalizedRacdNm;
            changed = true;
        }

        if (changed)
        {
            UpdatedAt = DateTime.UtcNow;
        }
    }
}