from __future__ import annotations

import argparse
import json
from pathlib import Path

import pandas as pd

from common import ROOT


METRICS = ["accuracy", "precision", "recall", "f1", "macro_f1"]


def main() -> None:
    ap = argparse.ArgumentParser()
    ap.add_argument("--root", default="results/main")
    ap.add_argument("--out", default="results/main_summary.csv")
    args = ap.parse_args()

    rows = []
    for path in (ROOT / args.root).glob("seed_*/*/*/metrics_test_clean.json"):
        result = json.loads(path.read_text())
        result["seed"] = int(path.parts[-4].replace("seed_", ""))
        rows.append(result)
    if not rows:
        raise SystemExit(f"No metrics found under {args.root}")

    df = pd.DataFrame(rows)
    out = ROOT / args.out
    out.parent.mkdir(parents=True, exist_ok=True)
    summary = df.groupby(["dataset", "method"], as_index=False)[METRICS].agg(["mean", "std"])
    summary.to_csv(out)
    print(f"Wrote {out}")

    flat = []
    for (dataset, method), group in df.groupby(["dataset", "method"]):
        row = {"dataset": dataset, "method": method, "n": len(group)}
        for metric in METRICS:
            row[metric] = f"{group[metric].mean():.4f} +/- {group[metric].std(ddof=1):.4f}"
        flat.append(row)
    flat_df = pd.DataFrame(flat).sort_values(["dataset", "method"])
    print(flat_df.to_string(index=False))


if __name__ == "__main__":
    main()