"""build_fundamental_raw_v2.py — FUNDAMENTAL_RAW_V2

P1-011: fundamental_raw_v1의 data_quality=FULL 레이블이 OCF/FCF 부재를 숨기는 문제 해소.
- 필드 단위 coverage 산출 (ticker 단위 아님)
- OCF/FCF 없으면 FULL이 아닌 PARTIAL
- engine_audit(61.6) vs data_quality(100) 충돌 근거 명시
"""
from __future__ import annotations

import argparse
import json
from datetime import datetime, timezone
from pathlib import Path

from v7_hardening_common import ROOT, TEMP, load_json, save_json

DEFAULT_RAW_V1 = TEMP / "fundamental_raw_v1.json"
DEFAULT_OUT    = TEMP / "fundamental_raw_v2.json"

# 필드 가중치 (multifactor_v4와 동일)
FIELD_WEIGHTS = {
    "roe_pct":       25,
    "opm_pct":       20,
    "ocf_krw":       15,   # OCF/FCF 합산 30점 중 반
    "fcf_krw":       15,
    "net_debt_krw":  10,
    "per":            8,
    "pbr":            7,
}
TOTAL_WEIGHT = sum(FIELD_WEIGHTS.values())  # = 100

# FULL 판정: ROE/OPM + 밸류에이션 + (OCF OR FCF) 중 하나라도 있어야 함
def _reclassify_data_quality(row: dict) -> str:
    if row.get("data_quality") == "ETF_EXCLUDED":
        return "ETF_EXCLUDED"
    has_core = (row.get("roe_pct") is not None and row.get("opm_pct") is not None)
    has_val  = (row.get("per") is not None or row.get("pbr") is not None)
    has_cf   = (row.get("ocf_krw") is not None or row.get("fcf_krw") is not None)
    if has_core and has_val and has_cf:
        return "FULL"
    if has_core and has_val:
        return "PARTIAL"       # OCF/FCF 없음
    if has_core:
        return "SPARSE"
    return "MISSING"


def _field_coverage(rows: list[dict]) -> dict[str, float]:
    non_etf = [r for r in rows if r.get("data_quality") != "ETF_EXCLUDED"]
    if not non_etf:
        return {}
    return {
        field: round(sum(1 for r in non_etf if r.get(field) is not None) / len(non_etf) * 100.0, 2)
        for field in FIELD_WEIGHTS
    }


def _weighted_coverage(field_cov: dict[str, float]) -> float:
    total_w = 0.0
    covered_w = 0.0
    for field, weight in FIELD_WEIGHTS.items():
        total_w += weight
        covered_w += weight * (field_cov.get(field, 0.0) / 100.0)
    return round(covered_w / total_w * 100.0, 2) if total_w else 0.0


def main() -> int:
    ap = argparse.ArgumentParser()
    ap.add_argument("--raw-v1", default=str(DEFAULT_RAW_V1))
    ap.add_argument("--out",    default=str(DEFAULT_OUT))
    args = ap.parse_args()

    raw_v1 = load_json(Path(args.raw_v1))
    rows_in: list[dict] = raw_v1.get("rows", []) if isinstance(raw_v1, dict) else []

    rows_out = []
    for row in rows_in:
        r = dict(row)
        r["data_quality_v1"] = row.get("data_quality")   # 이전 레이블 보존
        r["data_quality"]    = _reclassify_data_quality(row)
        # 각 필드 실측 여부 기록
        r["field_coverage"] = {
            f: (row.get(f) is not None)
            for f in FIELD_WEIGHTS
        }
        rows_out.append(r)

    field_cov = _field_coverage(rows_out)
    weighted_cov = _weighted_coverage(field_cov)
    non_etf = [r for r in rows_out if r.get("data_quality") != "ETF_EXCLUDED"]
    from collections import Counter
    dq_counts = Counter(r["data_quality"] for r in rows_out)

    result = {
        "formula_id": "FUNDAMENTAL_RAW_V2",
        "generated_at": datetime.now(timezone.utc).isoformat(),
        "ticker_count": len(rows_out),
        "non_etf_count": len(non_etf),
        # coverage 지표
        "raw_field_coverage_pct": weighted_cov,
        "field_coverage_pct": field_cov,
        "data_quality_counts": dict(dq_counts),
        # 충돌 근거 (engine_audit vs data_quality)
        "conflict_note": (
            "engine_audit가 낮은 fundamental_score를 보고하는 이유: "
            "OCF/FCF 0% 커버리지로 인해 가중 커버리지가 낮음. "
            "data_quality의 schema_presence_score=100은 필드 존재 여부만 확인."
        ),
        "v1_label_issue": (
            f"v1 data_quality=FULL {dq_counts.get('FULL',0)+len([r for r in rows_out if r.get('data_quality_v1')=='FULL' and r['data_quality']=='PARTIAL'])}건 중 "
            f"{len([r for r in rows_out if r.get('data_quality_v1')=='FULL' and r['data_quality']=='PARTIAL'])}건이 "
            "OCF/FCF 부재로 실제 PARTIAL → 수정됨"
        ),
        "rows": rows_out,
    }
    save_json(args.out, result)
    print(json.dumps({k: v for k, v in result.items() if k != "rows"}, ensure_ascii=False, indent=2))
    return 0


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