"""52주 신고가 근접도 (룰 기반: 70% 미만 0점, 100% 도달 100점, 선형)."""

import pandas as pd

from .base import ScoreNode


class High52WProximity(ScoreNode):
    name  = "high52w"
    label = "52주 신고가 근접도"
    default_params = {"window_days": 252}
    param_schema = {
        "type": "object",
        "properties": {
            "window_days": {"type": "integer", "minimum": 60, "maximum": 504, "default": 252}
        },
    }

    def compute(self, ctx, params: dict) -> pd.Series:
        window = int(params.get("window_days", 252))
        prices = ctx.prices
        if prices.empty:
            return pd.Series(dtype=float)

        ordered = prices.sort_values("date")
        last = ordered.groupby("ticker").tail(window)
        agg = last.groupby("ticker").agg(close=("close", "last"), high=("high", "max"))
        proximity = (agg["close"] / agg["high"]).clip(upper=1.0)
        score = ((proximity - 0.7) / 0.3).clip(lower=0.0, upper=1.0) * 100.0
        return score.fillna(0.0)