# scripts/inspect_time_column.py
from __future__ import annotations

import pandas as pd
from pathlib import Path

CSV_PATH = Path("data/weather_raw_full.csv")


def main() -> None:
    df = pd.read_csv(CSV_PATH, dtype={"time": "string"})
    print("Aperçu brut de la colonne 'time' :")
    print(df["time"].head(10))
    print()

    # On tente de parser en ISO8601, mais sans lever d'erreur :
    parsed = pd.to_datetime(df["time"], format="ISO8601", errors="coerce")

    invalid_mask = parsed.isna()
    nb_invalid = invalid_mask.sum()

    print(f"Nombre de valeurs 'time' non parsables en ISO8601 : {nb_invalid}")
    if nb_invalid > 0:
        print("Exemples de valeurs problématiques :")
        print(df.loc[invalid_mask, "time"].drop_duplicates().head(20))


if __name__ == "__main__":
    main()