"""일자별 틱·호가 수집 통계 (백테웹 통계 탭).

실매 벤더별 DB 적재량 + 틱↔호가 공백 비율.
- 틱/호가 DB는 벤더마다 SAVE 플래그로 **각각** 적재한다 (2·3차 spill일 때만 아님).
- MODE=tick: 체결 1건당 그 벤더 RAM 호가가 ``WS_ORDERBOOK_TICK_MAX_AGE_SEC``(기본 3초)
  안일 때만 호가행. 스냅 없으면 그 틱의 호가행은 안 생김.
- ``LIVE_FEED_FALLBACK``(기본 3초) 초과 틱은 매매 RAM·호가틱동기 skip (틱 DB는 기본 전부 적재).
"""
from __future__ import annotations

from datetime import datetime
from typing import Any, Dict, List, Optional, Set


def _ymd8(day: str) -> str:
    s = (day or "").strip().replace("-", "")[:8]
    if len(s) == 8 and s.isdigit():
        return s
    return datetime.now().strftime("%Y%m%d")


def _like(day8: str) -> str:
    return f"{day8}%"


def _row_nc(r: Any) -> Dict[str, Any]:
    if r is None:
        return {"n": 0, "codes": 0}
    if isinstance(r, dict):
        return {"n": int(r.get("n") or 0), "codes": int(r.get("c") or r.get("codes") or 0)}
    return {"n": int(r[0] or 0), "codes": int(r[1] or 0)}


def _pct(num: float, den: float) -> Optional[float]:
    if den is None or float(den) <= 0:
        return None
    return round(100.0 * float(num) / float(den), 2)


def _age_cut_row(
    *,
    channel: str,
    source: str,
    total: int,
    pass_n: int,
    fail_n: int,
    unknown_n: int,
    empty_minutes: int = 0,
) -> Dict[str, Any]:
    """옵투나/실매 읽기나이(LIVE_FEED_FALLBACK) 합격 요약 1행."""
    usable = int(pass_n) + int(unknown_n)  # lag 미상=실매와 같이 유지
    tot = int(total or 0)
    return {
        "channel": channel,
        "source": source,
        "total": tot,
        "pass_n": int(pass_n),
        "fail_n": int(fail_n),
        "unknown_n": int(unknown_n),
        "usable_n": usable,
        "empty_minutes": int(empty_minutes or 0),
        "pass_pct": _pct(pass_n, tot),
        "fail_pct": _pct(fail_n, tot),
        "usable_pct": _pct(usable, tot),
    }


def _feed_age_cut_stats(db, day8: str, age_sec: float) -> Dict[str, Any]:
    """recv_ts vs 체결/스냅 시각 지연 → 3초(폴백나이) 합격·탈락·미상.

    옵투나 ``merge_ticks_time_axis_fallback`` / 호가 lag 컷과 동일 축.
    lag 미상(NULL)은 실매와 같이 **버리지 않음** → usable 에 포함.
    empty_minutes = 그 분 틱이 전부 fail 인 (code,분) 수 (비어 재현되는 분).
    """
    age = max(0.0, float(age_sec or 3.0))
    like = _like(day8)
    rows_out: List[Dict[str, Any]] = []

    # ── ws_ticks ──
    try:
        tick_sql = (
            "SELECT source AS src, "
            "COUNT(*) AS total, "
            "SUM(CASE WHEN lag_sec IS NOT NULL AND lag_sec <= %s THEN 1 ELSE 0 END) AS pass_n, "
            "SUM(CASE WHEN lag_sec IS NOT NULL AND lag_sec > %s THEN 1 ELSE 0 END) AS fail_n, "
            "SUM(CASE WHEN lag_sec IS NULL THEN 1 ELSE 0 END) AS unknown_n "
            "FROM ("
            "  SELECT source, "
            "    TIMESTAMPDIFF(SECOND, "
            "      STR_TO_DATE(LEFT(COALESCE(NULLIF(tick_time_raw,''), tick_time), 14), '%%Y%%m%%d%%H%%i%%s'), "
            "      recv_ts"
            "    ) AS lag_sec "
            "  FROM ws_ticks WHERE tick_time LIKE %s"
            ") t GROUP BY source"
        )
        for r in db.conn.execute(tick_sql, (age, age, like)).fetchall() or []:
            d = dict(r) if not isinstance(r, dict) else r
            rows_out.append(
                _age_cut_row(
                    channel="tick",
                    source=str(d.get("src") or ""),
                    total=int(d.get("total") or 0),
                    pass_n=int(d.get("pass_n") or 0),
                    fail_n=int(d.get("fail_n") or 0),
                    unknown_n=int(d.get("unknown_n") or 0),
                )
            )
    except Exception:
        pass

    # 전량 컷된 분 (틱 채널) — 옵투나에서 그 분 시세 공백
    empty_min = 0
    try:
        empty_sql = (
            "SELECT COUNT(*) AS n FROM ("
            "  SELECT code, LEFT(tick_time,12) AS mk "
            "  FROM ("
            "    SELECT code, tick_time, "
            "      TIMESTAMPDIFF(SECOND, "
            "        STR_TO_DATE(LEFT(COALESCE(NULLIF(tick_time_raw,''), tick_time), 14), '%%Y%%m%%d%%H%%i%%s'), "
            "        recv_ts"
            "      ) AS lag_sec "
            "    FROM ws_ticks WHERE tick_time LIKE %s"
            "  ) x "
            "  GROUP BY code, LEFT(tick_time,12) "
            "  HAVING SUM(CASE WHEN lag_sec IS NULL OR lag_sec <= %s THEN 1 ELSE 0 END)=0 "
            "     AND COUNT(*)>0"
            ") z"
        )
        r = db.conn.execute(empty_sql, (like, age)).fetchone()
        empty_min = int((r["n"] if isinstance(r, dict) else r[0]) or 0)
    except Exception:
        empty_min = 0

    # ── ls_ws_ticks ──
    try:
        d0 = datetime.strptime(day8, "%Y%m%d")
        d1 = d0.replace(hour=23, minute=59, second=59)
        ls_sql = (
            "SELECT 'ls' AS src, "
            "COUNT(*) AS total, "
            "SUM(CASE WHEN lag_sec IS NOT NULL AND lag_sec <= %s THEN 1 ELSE 0 END) AS pass_n, "
            "SUM(CASE WHEN lag_sec IS NOT NULL AND lag_sec > %s THEN 1 ELSE 0 END) AS fail_n, "
            "SUM(CASE WHEN lag_sec IS NULL THEN 1 ELSE 0 END) AS unknown_n "
            "FROM ("
            "  SELECT TIMESTAMPDIFF(SECOND, "
            "    STR_TO_DATE("
            "      CASE WHEN CHAR_LENGTH(REGEXP_REPLACE(IFNULL(chetime,''), '[^0-9]', ''))>=14 "
            "        THEN LEFT(REGEXP_REPLACE(chetime, '[^0-9]', ''), 14) "
            "        WHEN CHAR_LENGTH(REGEXP_REPLACE(IFNULL(chetime,''), '[^0-9]', ''))>=6 "
            "        THEN CONCAT(DATE_FORMAT(ts,'%%Y%%m%%d'), "
            "          RIGHT(REGEXP_REPLACE(chetime, '[^0-9]', ''), 6)) "
            "        ELSE DATE_FORMAT(ts,'%%Y%%m%%d%%H%%i%%s') END, "
            "      '%%Y%%m%%d%%H%%i%%s'), "
            "    ts) AS lag_sec "
            "  FROM ls_ws_ticks WHERE ts>=%s AND ts<=%s"
            ") t"
        )
        r = db.conn.execute(ls_sql, (age, age, d0, d1)).fetchone()
        if r:
            d = dict(r) if not isinstance(r, dict) else r
            if int(d.get("total") or 0) > 0:
                rows_out.append(
                    _age_cut_row(
                        channel="tick",
                        source="ls",
                        total=int(d.get("total") or 0),
                        pass_n=int(d.get("pass_n") or 0),
                        fail_n=int(d.get("fail_n") or 0),
                        unknown_n=int(d.get("unknown_n") or 0),
                    )
                )
            else:
                rows_out.append(
                    _age_cut_row(
                        channel="tick", source="ls",
                        total=0, pass_n=0, fail_n=0, unknown_n=0,
                    )
                )
    except Exception:
        rows_out.append(
            _age_cut_row(
                channel="tick", source="ls",
                total=0, pass_n=0, fail_n=0, unknown_n=0,
            )
        )

    # ── ws_orderbook 스트림 ──
    try:
        ob_sql = (
            "SELECT source AS src, "
            "COUNT(*) AS total, "
            "SUM(CASE WHEN lag_sec IS NOT NULL AND lag_sec <= %s THEN 1 ELSE 0 END) AS pass_n, "
            "SUM(CASE WHEN lag_sec IS NOT NULL AND lag_sec > %s THEN 1 ELSE 0 END) AS fail_n, "
            "SUM(CASE WHEN lag_sec IS NULL THEN 1 ELSE 0 END) AS unknown_n "
            "FROM ("
            "  SELECT source, "
            "    TIMESTAMPDIFF(SECOND, "
            "      STR_TO_DATE("
            "        CASE WHEN CHAR_LENGTH(snap_time)>=14 THEN LEFT(snap_time,14) "
            "             WHEN CHAR_LENGTH(snap_time)>=6 THEN CONCAT(LEFT(%s,8), RIGHT(snap_time,6)) "
            "             ELSE NULL END, "
            "        '%%Y%%m%%d%%H%%i%%s'), "
            "      recv_ts"
            "    ) AS lag_sec "
            "  FROM ws_orderbook WHERE snap_time LIKE %s AND source<>%s"
            ") t GROUP BY source"
        )
        for r in db.conn.execute(ob_sql, (age, age, day8, like, "filter_eval")).fetchall() or []:
            d = dict(r) if not isinstance(r, dict) else r
            rows_out.append(
                _age_cut_row(
                    channel="orderbook",
                    source=str(d.get("src") or ""),
                    total=int(d.get("total") or 0),
                    pass_n=int(d.get("pass_n") or 0),
                    fail_n=int(d.get("fail_n") or 0),
                    unknown_n=int(d.get("unknown_n") or 0),
                )
            )
    except Exception:
        pass

    # LS 호가
    try:
        ls_ob_sql = (
            "SELECT 'ls_uh1' AS src, "
            "COUNT(*) AS total, "
            "SUM(CASE WHEN lag_sec IS NOT NULL AND lag_sec <= %s THEN 1 ELSE 0 END) AS pass_n, "
            "SUM(CASE WHEN lag_sec IS NOT NULL AND lag_sec > %s THEN 1 ELSE 0 END) AS fail_n, "
            "SUM(CASE WHEN lag_sec IS NULL THEN 1 ELSE 0 END) AS unknown_n "
            "FROM ("
            "  SELECT TIMESTAMPDIFF(SECOND, "
            "    STR_TO_DATE(LEFT(snap_time,14), '%%Y%%m%%d%%H%%i%%s'), "
            "    recv_ts) AS lag_sec "
            "  FROM ls_ws_orderbook WHERE snap_time LIKE %s"
            ") t"
        )
        r = db.conn.execute(ls_ob_sql, (age, age, like)).fetchone()
        if r:
            d = dict(r) if not isinstance(r, dict) else r
            rows_out.append(
                _age_cut_row(
                    channel="orderbook",
                    source="ls_uh1",
                    total=int(d.get("total") or 0),
                    pass_n=int(d.get("pass_n") or 0),
                    fail_n=int(d.get("fail_n") or 0),
                    unknown_n=int(d.get("unknown_n") or 0),
                )
            )
    except Exception:
        rows_out.append(
            _age_cut_row(
                channel="orderbook", source="ls_uh1",
                total=0, pass_n=0, fail_n=0, unknown_n=0,
            )
        )

    # 틱 합계 행
    tick_rows = [x for x in rows_out if x.get("channel") == "tick"]
    if tick_rows:
        rows_out.append(
            _age_cut_row(
                channel="tick",
                source="Σ(틱)",
                total=sum(x["total"] for x in tick_rows),
                pass_n=sum(x["pass_n"] for x in tick_rows),
                fail_n=sum(x["fail_n"] for x in tick_rows),
                unknown_n=sum(x["unknown_n"] for x in tick_rows),
                empty_minutes=empty_min,
            )
        )

    return {
        "age_sec": age,
        "empty_minutes_all_fail": empty_min,
        "rows": rows_out,
        "note": (
            f"나이={age:g}s (LIVE_FEED_FALLBACK). "
            "합격=lag≤나이 · 탈락=lag>나이 · 미상=lag계산불가(유지=usable). "
            f"전량탈락분={empty_min} (그 분 옵투나 시세 공백 후보)."
        ),
    }


def _safe_group(db, sql: str, params: tuple) -> List[Dict[str, Any]]:
    try:
        rows = db.conn.execute(sql, params).fetchall() or []
    except Exception:
        return []
    out: List[Dict[str, Any]] = []
    for r in rows:
        if isinstance(r, dict):
            out.append(
                {
                    "key": str(r.get("k") or r.get("source") or r.get("strategy") or ""),
                    "n": int(r.get("n") or 0),
                    "codes": int(r.get("c") or 0),
                }
            )
        else:
            out.append({"key": str(r[0] or ""), "n": int(r[1] or 0), "codes": int(r[2] or 0)})
    return out


def _safe_nc(db, sql: str, params: tuple) -> Dict[str, Any]:
    try:
        r = db.conn.execute(sql, params).fetchone()
    except Exception:
        return {"n": 0, "codes": 0}
    return _row_nc(r)


def _distinct_codes(db, sql: str, params: tuple) -> Set[str]:
    try:
        rows = db.conn.execute(sql, params).fetchall() or []
    except Exception:
        return set()
    out: Set[str] = set()
    for r in rows:
        if isinstance(r, dict):
            c = str(r.get("code") or "").strip()
        else:
            c = str(r[0] or "").strip()
        if c:
            out.add(c)
    return out


def _env_flags(db) -> Dict[str, Any]:
    """운영설정 스냅샷 (표시용). get_env_* 실패해도 탭은 동작."""
    out: Dict[str, Any] = {}
    try:
        from kis_trader.utils.env import get_env_bool, get_env_float, get_env_from_db
    except Exception:
        return out
    for k, dflt in (
        ("LIVE_TICK_PROVIDER", "kis"),
        ("LIVE_OB_PROVIDER", "kis"),
        ("LS_WS_ORDERBOOK_SAVE_MODE", "tick"),
        ("WS_ORDERBOOK_SAVE_MODE", "tick"),
    ):
        try:
            out[k] = str(get_env_from_db(k, dflt) or dflt)
        except Exception:
            out[k] = dflt
    for k, dflt in (
        ("LS_WS_ORDERBOOK_SAVE", True),
        ("WS_ORDERBOOK_SAVE_KIS", True),
        ("WS_ORDERBOOK_SAVE_KIWOOM", True),
        ("WS_TICK_SAVE_KIS", True),
        ("WS_TICK_SAVE_KIWOOM", True),
        ("LS_WS_TICK_SAVE", False),
        ("LS_WS_CANDLE_SAVE", True),
        ("LS_WS_TICK_MIRROR_WS_TICKS", False),
    ):
        try:
            out[k] = bool(get_env_bool(k, dflt))
        except Exception:
            out[k] = dflt
    for k, dflt in (
        ("LIVE_FEED_FALLBACK_MAX_AGE_SEC", 3.0),
        ("WS_ORDERBOOK_TICK_MAX_AGE_SEC", 3.0),
    ):
        try:
            out[k] = float(get_env_float(k, dflt) or dflt)
        except Exception:
            out[k] = float(dflt)
    return out


def _vendor_coverage(
    *,
    vendor: str,
    tick: Dict[str, Any],
    ob: Dict[str, Any],
    tick_codes: Optional[Set[str]],
    ob_codes: Optional[Set[str]],
    max_age_sec: float,
) -> Dict[str, Any]:
    """같은 벤더 틱 vs 호가 공백·동기율.

    tick_codes/ob_codes 가 None 이면(빠른 조회) 종목교집합 지표는 null.
    """
    tick_n = int(tick.get("n") or 0)
    tick_c = int(tick.get("codes") or (len(tick_codes) if tick_codes is not None else 0) or 0)
    ob_n = int(ob.get("n") or 0)
    ob_c = int(ob.get("codes") or (len(ob_codes) if ob_codes is not None else 0) or 0)
    if tick_codes is None or ob_codes is None:
        tick_no_ob_n: Optional[int] = None
        ob_no_tick_n: Optional[int] = None
        tick_no_ob_pct: Optional[float] = None
    else:
        tick_no_ob_n = len(tick_codes - ob_codes)
        ob_no_tick_n = len(ob_codes - tick_codes)
        tick_no_ob_pct = _pct(tick_no_ob_n, tick_c)
    # 호가틱동기 미적재 대리지표: 틱행 대비 호가행이 없는 비율
    # (MODE=tick 에서 snap None / skip_ram / 큐드롭 포함)
    missing_ob_rows = max(0, tick_n - ob_n)
    return {
        "vendor": vendor,
        "tick_n": tick_n,
        "tick_codes": tick_c,
        "ob_n": ob_n,
        "ob_codes": ob_c,
        "tick_codes_no_ob": tick_no_ob_n,
        "tick_codes_no_ob_pct": tick_no_ob_pct,
        "ob_codes_no_tick": ob_no_tick_n,
        "ob_per_tick_row_pct": _pct(ob_n, tick_n),
        "missing_ob_row_pct": _pct(missing_ob_rows, tick_n),
        "avg_tick_per_code": round(tick_n / tick_c, 1) if tick_c else 0.0,
        "avg_ob_per_code": round(ob_n / ob_c, 1) if ob_c else 0.0,
        "orderbook_tick_max_age_sec": float(max_age_sec),
        "sample_tick_no_ob_codes": (
            sorted(tick_codes - ob_codes)[:30]
            if tick_codes is not None and ob_codes is not None
            else []
        ),
    }


def _ob_per_tick_ratio(ob_n: int, tick_n: int) -> Optional[float]:
    """호가행/틱행 (소수). 틱 0이면 None."""
    if tick_n is None or int(tick_n) <= 0:
        return None
    return round(float(ob_n) / float(tick_n), 3)


def _pack_vendor(label: str, tick_n: int, tick_c: int, ob_n: int, ob_c: int) -> Dict[str, Any]:
    tn = int(tick_n or 0)
    on = int(ob_n or 0)
    ratio = _ob_per_tick_ratio(on, tn)
    return {
        "vendor": label,
        "tick_n": tn,
        "tick_codes": int(tick_c or 0),
        "ob_n": on,
        "ob_codes": int(ob_c or 0),
        "ob_per_tick": ratio,
        "ob_per_tick_pct": _pct(on, tn),
    }



def build_feed_collect_stats(
    db,
    day: Optional[str] = None,
    *,
    heavy: bool = False,
) -> Dict[str, Any]:
    """한 거래일(KST YYYYMMDD) 수집 요약 + 증권사 대비.

    기본(heavy=False): GROUP BY COUNT 만 — 탭 체감용.
    heavy=True: DISTINCT 종목교집합 + 폴백나이(STR_TO_DATE 전수) — 느림, 버튼으로만.
    최근 N일 일괄 GROUP BY 는 제거(틱·호가 테이블 폭주).
    """
    day8 = _ymd8(day or "")
    like = _like(day8)
    notes: List[str] = []
    heavy = bool(heavy)

    ticks_by_src = _safe_group(
        db,
        "SELECT source AS k, COUNT(*) AS n, COUNT(DISTINCT code) AS c "
        "FROM ws_ticks WHERE tick_time LIKE %s GROUP BY source ORDER BY n DESC",
        (like,),
    )
    ob_by_src = _safe_group(
        db,
        "SELECT source AS k, COUNT(*) AS n, COUNT(DISTINCT code) AS c "
        "FROM ws_orderbook WHERE snap_time LIKE %s GROUP BY source ORDER BY n DESC",
        (like,),
    )
    fe_by_strat = _safe_group(
        db,
        "SELECT COALESCE(strategy,'') AS k, COUNT(*) AS n, COUNT(DISTINCT code) AS c "
        "FROM ws_orderbook WHERE source=%s AND snap_time LIKE %s "
        "GROUP BY strategy ORDER BY n DESC",
        ("filter_eval", like),
    )
    fe_reject = {"n": 0, "codes": 0}
    fe_pass = {"n": 0, "codes": 0}
    if heavy:
        fe_reject = _safe_nc(
            db,
            "SELECT COUNT(*) AS n, COUNT(DISTINCT code) AS c FROM ws_orderbook "
            "WHERE source=%s AND snap_time LIKE %s AND reject_code IS NOT NULL AND reject_code<>''",
            ("filter_eval", like),
        )
        fe_pass = _safe_nc(
            db,
            "SELECT COUNT(*) AS n, COUNT(DISTINCT code) AS c FROM ws_orderbook "
            "WHERE source=%s AND snap_time LIKE %s AND (reject_code IS NULL OR reject_code='')",
            ("filter_eval", like),
        )

    ls_ob = _safe_nc(
        db,
        "SELECT COUNT(*) AS n, COUNT(DISTINCT code) AS c FROM ls_ws_orderbook WHERE snap_time LIKE %s",
        (like,),
    )
    try:
        d0 = datetime.strptime(day8, "%Y%m%d")
        d1 = d0.replace(hour=23, minute=59, second=59)
        ls_ticks = _safe_nc(
            db,
            "SELECT COUNT(*) AS n, COUNT(DISTINCT code) AS c FROM ls_ws_ticks "
            "WHERE ts >= %s AND ts <= %s",
            (d0, d1),
        )
    except Exception:
        ls_ticks = {"n": 0, "codes": 0}

    ls_candles = {"n": 0, "codes": 0}
    try:
        ls_candles = _safe_nc(
            db,
            "SELECT COUNT(*) AS n, COUNT(DISTINCT code) AS c FROM ls_ws_candles "
            "WHERE candle_time LIKE %s",
            (like,),
        )
    except Exception:
        pass

    kis_dedicated = _safe_nc(
        db,
        "SELECT COUNT(*) AS n, COUNT(DISTINCT code) AS c FROM kis_ws_orderbook WHERE snap_time LIKE %s",
        (like,),
    )

    def _pick(rows: List[Dict[str, Any]], *keys: str) -> Dict[str, Any]:
        want = {k.lower() for k in keys}
        n, c = 0, 0
        for r in rows:
            if str(r.get("key") or "").lower() in want:
                n += int(r.get("n") or 0)
                c = max(c, int(r.get("codes") or 0))
        return {"n": n, "codes": c}

    tick_kis = _pick(ticks_by_src, "kis")
    tick_kw = _pick(ticks_by_src, "kiwoom")
    tick_ls = _pick(ticks_by_src, "ls")
    ob_kis = _pick(ob_by_src, "kis_h0stasp0", "kis")
    ob_kw = _pick(ob_by_src, "kiwoom_0d", "kiwoom")
    ob_fe = _pick(ob_by_src, "filter_eval")

    env = _env_flags(db)
    max_age = float(env.get("WS_ORDERBOOK_TICK_MAX_AGE_SEC") or 3.0)
    fb_age = float(env.get("LIVE_FEED_FALLBACK_MAX_AGE_SEC") or 3.0)

    kis_tick_codes: Optional[Set[str]] = None
    kis_ob_codes: Optional[Set[str]] = None
    kw_tick_codes: Optional[Set[str]] = None
    kw_ob_codes: Optional[Set[str]] = None
    ls_tick_codes: Optional[Set[str]] = None
    ls_ob_codes: Optional[Set[str]] = None
    if heavy:
        kis_tick_codes = _distinct_codes(
            db,
            "SELECT DISTINCT code FROM ws_ticks WHERE tick_time LIKE %s AND source=%s",
            (like, "kis"),
        )
        kis_ob_codes = _distinct_codes(
            db,
            "SELECT DISTINCT code FROM ws_orderbook WHERE snap_time LIKE %s AND source=%s",
            (like, "kis_h0stasp0"),
        )
        kw_tick_codes = _distinct_codes(
            db,
            "SELECT DISTINCT code FROM ws_ticks WHERE tick_time LIKE %s AND source=%s",
            (like, "kiwoom"),
        )
        kw_ob_codes = _distinct_codes(
            db,
            "SELECT DISTINCT code FROM ws_orderbook WHERE snap_time LIKE %s AND source=%s",
            (like, "kiwoom_0d"),
        )
        try:
            d0 = datetime.strptime(day8, "%Y%m%d")
            d1 = d0.replace(hour=23, minute=59, second=59)
            ls_tick_codes = _distinct_codes(
                db,
                "SELECT DISTINCT code FROM ls_ws_ticks WHERE ts >= %s AND ts <= %s",
                (d0, d1),
            )
        except Exception:
            ls_tick_codes = set()
        ls_ob_codes = _distinct_codes(
            db,
            "SELECT DISTINCT code FROM ls_ws_orderbook WHERE snap_time LIKE %s",
            (like,),
        )

    coverage = [
        _vendor_coverage(
            vendor="kis",
            tick=tick_kis,
            ob=ob_kis,
            tick_codes=kis_tick_codes,
            ob_codes=kis_ob_codes,
            max_age_sec=max_age,
        ),
        _vendor_coverage(
            vendor="kiwoom",
            tick=tick_kw,
            ob=ob_kw,
            tick_codes=kw_tick_codes,
            ob_codes=kw_ob_codes,
            max_age_sec=max_age,
        ),
        _vendor_coverage(
            vendor="ls",
            tick=ls_ticks,
            ob=ls_ob,
            tick_codes=ls_tick_codes,
            ob_codes=ls_ob_codes,
            max_age_sec=max_age,
        ),
    ]
    vendor_matrix = {
        "day8": day8,
        "day": f"{day8[:4]}-{day8[4:6]}-{day8[6:8]}",
        "vendors": [
            _pack_vendor(
                "kis",
                int(tick_kis.get("n") or 0),
                int(tick_kis.get("codes") or 0),
                int(ob_kis.get("n") or 0),
                int(ob_kis.get("codes") or 0),
            ),
            _pack_vendor(
                "kiwoom",
                int(tick_kw.get("n") or 0),
                int(tick_kw.get("codes") or 0),
                int(ob_kw.get("n") or 0),
                int(ob_kw.get("codes") or 0),
            ),
            _pack_vendor(
                "ls",
                int(ls_ticks.get("n") or 0),
                int(ls_ticks.get("codes") or 0),
                int(ls_ob.get("n") or 0),
                int(ls_ob.get("codes") or 0),
            ),
        ],
        "filter_eval_n": int(ob_fe.get("n") or 0),
        "filter_eval_codes": int(ob_fe.get("codes") or 0),
        "kis_tick": int(tick_kis.get("n") or 0),
        "kis_ob": int(ob_kis.get("n") or 0),
        "kis_ob_tick": _ob_per_tick_ratio(int(ob_kis.get("n") or 0), int(tick_kis.get("n") or 0)),
        "kw_tick": int(tick_kw.get("n") or 0),
        "kw_ob": int(ob_kw.get("n") or 0),
        "kw_ob_tick": _ob_per_tick_ratio(int(ob_kw.get("n") or 0), int(tick_kw.get("n") or 0)),
        "ls_tick": int(ls_ticks.get("n") or 0),
        "ls_ob": int(ls_ob.get("n") or 0),
        "ls_ob_tick": _ob_per_tick_ratio(int(ls_ob.get("n") or 0), int(ls_ticks.get("n") or 0)),
    }

    if heavy and kis_tick_codes is not None and kw_tick_codes is not None:
        both_tick = len(kis_tick_codes & kw_tick_codes)
        overlap = {
            "both_tick_codes": both_tick,
            "kis_only_tick_codes": len(kis_tick_codes - kw_tick_codes),
            "kiwoom_only_tick_codes": len(kw_tick_codes - kis_tick_codes),
            "both_ob_codes": len((kis_ob_codes or set()) & (kw_ob_codes or set())),
            "kis_only_ob_codes": len((kis_ob_codes or set()) - (kw_ob_codes or set())),
            "kiwoom_only_ob_codes": len((kw_ob_codes or set()) - (kis_ob_codes or set())),
        }
    else:
        overlap = {
            "both_tick_codes": None,
            "kis_only_tick_codes": None,
            "kiwoom_only_tick_codes": None,
            "both_ob_codes": None,
            "kis_only_ob_codes": None,
            "kiwoom_only_ob_codes": None,
            "deferred": True,
        }

    notes.append(
        "틱·호가 DB는 벤더별 SAVE로 각각 적재 (2·3차 spill일 때만 쌓이는 구조 아님). "
        f"읽기 폴백나이={fb_age:g}s · 호가틱동기 max_age={max_age:g}s."
    )
    if not heavy:
        notes.append(
            "빠른 조회(기본): 나이컷·호가0종목 교집합은 「상세 집계」로. "
            "인덱스(market,code,time)는 종목단위 조회용이라 당일 전수 COUNT/STR_TO_DATE는 여전히 무겁다."
        )
    for cov in coverage:
        if int(cov.get("tick_codes") or 0) <= 0 and int(cov.get("ob_n") or 0) <= 0:
            continue
        no_ob = cov.get("tick_codes_no_ob")
        miss = cov.get("missing_ob_row_pct")
        if no_ob is None:
            if int(cov.get("tick_n") or 0) > 0 and miss is not None and float(miss) >= 5.0:
                notes.append(
                    f"[{cov['vendor']}] 틱행 대비 호가행 공백≈{miss}% "
                    f"(호가행/틱행={cov.get('ob_per_tick_row_pct')}%). "
                    "호가0종목 수는 상세 집계에서 확인."
                )
            continue
        no_ob_i = int(no_ob or 0)
        if int(cov.get("tick_n") or 0) > 0 and (
            no_ob_i > 0 or (miss is not None and float(miss) >= 5.0)
        ):
            notes.append(
                f"[{cov['vendor']}] 틱종목 중 호가0종목 {no_ob_i}/{cov['tick_codes']}"
                f"({cov.get('tick_codes_no_ob_pct')}%) · "
                f"틱행 대비 호가행 공백≈{miss}% "
                f"(호가행/틱행={cov.get('ob_per_tick_row_pct')}%). "
                "원인후보: MODE=tick에서 해당벤더 호가RAM이 max_age 밖·미수신, "
                "또는 체결 lag>폴백나이로 호가틱동기 skip(틱DB는 기본 유지)."
            )
        if cov.get("vendor") == "ls" and int(cov.get("ob_n") or 0) == 0 and int(cov.get("tick_n") or 0) == 0:
            notes.append("[ls] 당일 틱·호가 DB 0 — hold외·Bye·SAVE OFF·구독 실패 점검.")

    if int(ls_ob.get("n") or 0) == 0 and env.get("LS_WS_ORDERBOOK_SAVE"):
        mode = str(env.get("LS_WS_ORDERBOOK_SAVE_MODE") or "tick").lower()
        if mode in ("tick", "on_tick", "tick_sync", "sync"):
            notes.append(
                "LS 호가 SAVE=ON·MODE=tick 인데 당일 0건 → UH1만으로 DB 안 씀. "
                "체결 콜백 필요. Bye/구독 빈약이면 0."
            )
        else:
            notes.append("LS 호가 SAVE=ON 인데 당일 0건 → Bye·구독·interval 스로틀 점검.")
    if not env.get("LS_WS_TICK_SAVE"):
        notes.append("LS_WS_TICK_SAVE=false (ls_ws_ticks 미적재). ON이면 구독전체 적재.")
    else:
        notes.append("LS_WS_TICK_SAVE=true → 구독 종목 US3를 ls_ws_ticks 에 적재 (영구만이 아님).")

    if heavy:
        age_cut = _feed_age_cut_stats(db, day8, fb_age)
    else:
        age_cut = {
            "age_sec": fb_age,
            "empty_minutes_all_fail": None,
            "rows": [],
            "deferred": True,
            "note": (
                f"나이={fb_age:g}s · 기본 조회에서는 생략(전수 STR_TO_DATE 스캔). "
                "「상세 집계」로 로드."
            ),
        }

    return {
        "day": f"{day8[:4]}-{day8[4:6]}-{day8[6:8]}",
        "day8": day8,
        "heavy": heavy,
        "env": env,
        "notes": notes,
        "vendor_matrix": vendor_matrix,
        "recent_days": [],
        "recent_days_n": 0,
        "age_cut": age_cut,
        "summary": {
            "ticks": {
                "kis": tick_kis,
                "kiwoom": tick_kw,
                "ls_mirror": tick_ls,
                "ls_table": ls_ticks,
            },
            "orderbook": {
                "kis_h0stasp0": ob_kis,
                "kiwoom_0d": ob_kw,
                "filter_eval": ob_fe,
                "ls_ws_orderbook": ls_ob,
                "kis_ws_orderbook": kis_dedicated,
            },
            "ls_candles": ls_candles,
            "filter_eval_pass": fe_pass,
            "filter_eval_reject": fe_reject,
        },
        "coverage": coverage,
        "overlap": overlap,
        "ticks_by_source": ticks_by_src,
        "orderbook_by_source": ob_by_src,
        "filter_eval_by_strategy": fe_by_strat,
    }