"""Shared helpers: every output records game, parameters, rounds, seed and date."""
import csv, json, datetime, os

ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
SIMS = os.path.join(ROOT, "out", "sims")
CSVS = os.path.join(ROOT, "out", "csv")
RUN_DATE = datetime.date.today().isoformat()


def save(name, meta, data, csv_rows=None, csv_header=None):
    os.makedirs(SIMS, exist_ok=True)
    os.makedirs(CSVS, exist_ok=True)
    meta = {**meta, "date": RUN_DATE, "script": f"data-scripts/{meta.get('script', name + '.py')}"}
    with open(os.path.join(SIMS, f"{name}.json"), "w") as f:
        json.dump({"meta": meta, "data": data}, f, indent=1)
    if csv_rows is not None:
        with open(os.path.join(CSVS, f"{name}.csv"), "w", newline="") as f:
            w = csv.writer(f)
            w.writerow([f"# {k}: {v}" for k, v in meta.items()])
            w.writerow(csv_header)
            w.writerows(csv_rows)
    print("saved", name)