"""calibration 판정 — ruler 가 gold>bad 를 맞히고 단일결함을 표적만(허용 연쇄 관용) 감지하는지.
FAIL 이면 judge 는 기본 차단(강제는 --allow-uncalibrated). 절대 rubric 은 여기서만 쓴다."""

PER_COMPARISON_MIN = 2 / 3
AGG_AGREEMENT_MIN = 0.75
AGG_FLIP_MIN = 0.80
GOLD_PREF_MIN = 0.67


def gold_vs_bad_pass(gold_pref, verdict, flip):
    """gold 에 대한 명확한 선호도와 일관성 검증"""
    return verdict == "gold" and gold_pref >= GOLD_PREF_MIN and flip >= PER_COMPARISON_MIN


def single_defect_pass(target_drop, next_nonallowed_drop, nonallowed_max_drop, pairwise_goldwin, th):
    """단일 결함이 표적 기준만 충족하는지 검증"""
    return (target_drop >= th["target-min-drop"]
            and nonallowed_max_drop <= th["non-target-max-drop"]
            and (target_drop - next_nonallowed_drop) >= th["target-margin-over-next"]
            and pairwise_goldwin >= th["pairwise-target-goldwin-min"])


def aggregate_pass(per_comparison, agg_agreement, agg_flip):
    """집합 수준에서 agreement 와 flip 일관성 검증"""
    if agg_agreement < AGG_AGREEMENT_MIN or agg_flip < AGG_FLIP_MIN:
        return False
    return all(c["agreement"] >= PER_COMPARISON_MIN and c["flip"] >= PER_COMPARISON_MIN
               for c in per_comparison)


def verdict(results):
    """최종 판정: pass 는 gold-vs-bad AND aggregate AND 모든 single-defects 통과할 때만"""
    reasons = []
    if not results.get("gold-vs-bad"):
        reasons.append("gold-vs-bad FAIL")
    if not results.get("aggregate"):
        reasons.append("aggregate 임계 FAIL")
    for fid, ok in (results.get("single-defects") or {}).items():
        if not ok:
            reasons.append(f"단일결함 {fid} 격리 FAIL")
    return {"pass": not reasons, "reasons": reasons}