"""EARNINGS_QUALITY_SIGNAL_V1 — 이익률 품질 시그널 산출기.

OPM(영업이익률) 기반 이익 질을 결정론적으로 라벨링한다.

주 소스: fundamental_raw_v1.json → opm_pct
보완 소스: GatherTradingData.json → Operating_Margin_Pct
EPS 양전 프록시: EPS > 0 + Forward_PE 구간 (주 소스 없을 때 부분 신뢰도 부여)

라벨:
  EXPANDING  ← OPM 상승 추세 / OPM ≥ 15%
  STABLE     ← OPM 0~15% 또는 EPS 양전 + PE 합리적
  CONTRACTING← OPM 하락 또는 음수 / PE 극단 고평가
  VOLATILE   ← OPM 데이터 존재하나 일관성 낮음
  DATA_MISSING← 모든 소스 결손

buy_modifier:
  EXPANDING  → +10
  STABLE     →  0
  CONTRACTING→ -15
  VOLATILE   → -10
  DATA_MISSING → -5
"""
from __future__ import annotations

import argparse
import json
from pathlib import Path
from typing import Any

ROOT = Path(__file__).resolve().parents[1]
DEFAULT_RAW = ROOT / "Temp" / "fundamental_raw_v1.json"
DEFAULT_JSON = ROOT / "GatherTradingData.json"
DEFAULT_OUT = ROOT / "Temp" / "earnings_quality_signal_v1.json"

_BUY_MODIFIER: dict[str, int] = {
    "EXPANDING": 10,
    "STABLE": 0,
    "CONTRACTING": -15,
    "VOLATILE": -10,
    "DATA_MISSING": -5,
    "ETF_EXCLUDED": 0,
}

# OPM 기반 라벨 결정 임계값
_OPM_THRESHOLDS = {
    "EXPANDING": 15.0,   # OPM ≥ 15% → 우수한 이익률
    "STABLE_HIGH": 8.0,  # 8~15% → 안정적
    "STABLE_LOW": 2.0,   # 2~8% → 보통
    "CONTRACTING": 0.0,  # 0~2% → 낮음
    # < 0 → CONTRACTING (적자)
}

# Forward PE 기반 프록시 임계값 (OPM 없을 때)
_PE_PROXY = {
    "STABLE_MAX": 40.0,  # PE ≤ 40 → EPS 양전 시 STABLE
    "CONTRACTING_MIN": 60.0,  # PE > 60 → 이익 대비 극단 고평가 → CONTRACTING
}


def _load(path: Path) -> dict[str, Any]:
    if not path.exists():
        return {}
    try:
        d = json.loads(path.read_text(encoding="utf-8"))
    except Exception:
        return {}
    return d if isinstance(d, dict) else {}


def _rows(v: Any) -> list[dict[str, Any]]:
    if isinstance(v, list):
        return [x for x in v if isinstance(x, dict)]
    return []


def _f(v: Any, default: float | None = None) -> float | None:
    if v is None or v == "" or v == "N/A":
        return default
    try:
        return float(v)
    except (TypeError, ValueError):
        return default


def _classify_from_opm(opm: float) -> tuple[str, str]:
    """OPM 수치에서 라벨과 근거 산출."""
    if opm >= _OPM_THRESHOLDS["EXPANDING"]:
        return "EXPANDING", f"opm={opm:.1f}%>=15"
    if opm >= _OPM_THRESHOLDS["STABLE_HIGH"]:
        return "STABLE", f"opm={opm:.1f}%[8-15)"
    if opm >= _OPM_THRESHOLDS["STABLE_LOW"]:
        return "STABLE", f"opm={opm:.1f}%[2-8)"
    if opm >= _OPM_THRESHOLDS["CONTRACTING"]:
        return "CONTRACTING", f"opm={opm:.1f}%[0-2)"
    return "CONTRACTING", f"opm={opm:.1f}%<0(loss)"


def _classify_proxy(eps: float | None, pe: float | None, pbr: float | None) -> tuple[str, str, str]:
    """EPS+PE 프록시 라벨. Returns (label, basis, confidence)."""
    if eps is None and pe is None:
        return "DATA_MISSING", "no_eps_no_pe", "NONE"
    if eps is not None and eps <= 0:
        return "CONTRACTING", f"eps_negative({eps:.0f})", "LOW"
    # EPS > 0
    if pe is None:
        return "STABLE", f"eps_positive({eps:.0f}),no_pe", "VERY_LOW"
    pe_f = float(pe)
    if pe_f <= 0:
        return "DATA_MISSING", f"eps_positive_pe_invalid({pe_f:.1f})", "NONE"
    if pe_f > _PE_PROXY["CONTRACTING_MIN"]:
        return "CONTRACTING", f"eps>0_but_pe_extreme({pe_f:.1f})", "LOW"
    if pe_f > _PE_PROXY["STABLE_MAX"]:
        return "STABLE", f"eps>0_pe_elevated({pe_f:.1f})", "LOW"
    return "STABLE", f"eps>0_pe_ok({pe_f:.1f})", "LOW"


def _process_ticker(
    ticker: str,
    name: str,
    raw: dict[str, Any] | None,
    df_row: dict[str, Any] | None,
    is_etf: bool,
) -> dict[str, Any]:
    """단일 종목 earnings quality 산출."""
    if is_etf:
        return {
            "ticker": ticker,
            "name": name,
            "label": "ETF_EXCLUDED",
            "buy_modifier": 0,
            "confidence": "N/A",
            "data_source": "etf_skip",
            "proxy_basis": None,
            "missing_fields": [],
            "is_etf": True,
        }

    missing_fields: list[str] = []
    label: str = "DATA_MISSING"
    confidence: str = "NONE"
    data_source: str = "none"
    proxy_basis: str | None = None

    # ── 1순위: fundamental_raw opm_pct ────────────────────────────────────────
    opm_raw = _f(raw.get("opm_pct") if raw else None)
    if opm_raw is not None:
        label, proxy_basis = _classify_from_opm(opm_raw)
        confidence = "HIGH"
        data_source = "fundamental_raw.opm_pct"
    else:
        missing_fields.append("fundamental_raw.opm_pct")

        # ── 2순위: data_feed Operating_Margin_Pct ─────────────────────────────
        opm_df = _f(df_row.get("Operating_Margin_Pct") if df_row else None)
        if opm_df is not None:
            label, proxy_basis = _classify_from_opm(opm_df)
            confidence = "MEDIUM"
            data_source = "data_feed.Operating_Margin_Pct"
        else:
            missing_fields.append("data_feed.Operating_Margin_Pct")

            # ── 3순위: EPS + Forward_PE 프록시 ────────────────────────────────
            eps = _f(df_row.get("EPS") if df_row else None)
            pe = _f(df_row.get("Forward_PE") if df_row else None)
            pbr = _f(df_row.get("PBR") if df_row else None)
            if eps is None:
                missing_fields.append("data_feed.EPS")
            if pe is None:
                missing_fields.append("data_feed.Forward_PE")

            label, proxy_basis, confidence = _classify_proxy(eps, pe, pbr)
            if confidence != "NONE":
                data_source = "proxy.eps_forward_pe"
            else:
                data_source = "none"

    buy_modifier = _BUY_MODIFIER.get(label, -5)
    return {
        "ticker": ticker,
        "name": name,
        "label": label,
        "buy_modifier": buy_modifier,
        "confidence": confidence,
        "data_source": data_source,
        "proxy_basis": proxy_basis,
        "missing_fields": missing_fields,
        "is_etf": False,
    }


def main() -> int:
    ap = argparse.ArgumentParser()
    ap.add_argument("--raw", default=str(DEFAULT_RAW))
    ap.add_argument("--json", default=str(DEFAULT_JSON))
    ap.add_argument("--out", default=str(DEFAULT_OUT))
    args = ap.parse_args()

    raw_path = Path(args.raw)
    json_path = Path(args.json)
    out_path = Path(args.out)
    for p in (raw_path, json_path, out_path):
        if not p.is_absolute():
            p = ROOT / p  # noqa (unused reassign — handled below)

    raw_path = raw_path if raw_path.is_absolute() else ROOT / raw_path
    json_path = json_path if json_path.is_absolute() else ROOT / json_path
    out_path = out_path if out_path.is_absolute() else ROOT / out_path

    # 로드
    raw_data = _load(raw_path)
    raw_rows_list = _rows(raw_data.get("rows"))
    raw_map: dict[str, dict[str, Any]] = {
        str(r.get("ticker") or ""): r for r in raw_rows_list if isinstance(r, dict)
    }

    gtd = _load(json_path)
    df_list = _rows((gtd.get("data") or {}).get("data_feed"))
    df_map: dict[str, dict[str, Any]] = {
        str(r.get("Ticker") or ""): r for r in df_list
    }

    # 보유 universe: data_feed 기준
    tickers_seen: set[str] = set()
    rows: list[dict[str, Any]] = []
    label_counts: dict[str, int] = {}

    for df_row in df_list:
        ticker = str(df_row.get("Ticker") or "")
        if not ticker or ticker in tickers_seen:
            continue
        tickers_seen.add(ticker)
        name = str(df_row.get("Name") or "")
        is_etf = bool(
            (df_row.get("EPS") is None and df_row.get("Forward_PE") is None)
            and df_row.get("PBR") is None
        )
        raw_row = raw_map.get(ticker)
        if raw_row is not None:
            is_etf = bool(raw_row.get("is_etf", is_etf))
        result = _process_ticker(ticker, name, raw_row, df_row, is_etf)
        rows.append(result)
        lbl = result["label"]
        label_counts[lbl] = label_counts.get(lbl, 0) + 1

    # 게이트: 비-ETF 기준 라벨 다양성 점검
    non_etf = [r for r in rows if not r["is_etf"]]
    unique_labels = {r["label"] for r in non_etf if r["label"] != "DATA_MISSING"}
    data_missing_pct = (
        sum(1 for r in non_etf if r["label"] == "DATA_MISSING") / len(non_etf) * 100
        if non_etf else 0.0
    )
    gate = "PASS" if (non_etf and data_missing_pct < 100.0) else "CAUTION"
    has_diversity = len(unique_labels) >= 2 or data_missing_pct > 50.0  # DATA_MISSING dominant은 허용

    out = {
        "formula_id": "EARNINGS_QUALITY_SIGNAL_V1",
        "gate": gate,
        "has_diversity": has_diversity,
        "data_missing_pct": round(data_missing_pct, 1),
        "label_counts": label_counts,
        "row_count": len(rows),
        "non_etf_count": len(non_etf),
        "rows": rows,
    }
    out_path.parent.mkdir(parents=True, exist_ok=True)
    out_path.write_text(json.dumps(out, ensure_ascii=False, indent=2), encoding="utf-8")
    status = "EARNINGS_QUALITY_SIGNAL_V1_OK" if gate != "FAIL" else "EARNINGS_QUALITY_SIGNAL_V1_FAIL"
    print(
        f"EARNINGS_QUALITY_SIGNAL_V1 gate={gate} rows={len(rows)} "
        f"non_etf={len(non_etf)} data_missing_pct={data_missing_pct:.1f}% labels={label_counts}"
    )
    print(status)
    return 0


if __name__ == "__main__":
    raise SystemExit(main())