# /home/debian/Gestion_sondes/utils_mail.py
import os
import smtplib
import logging
from email.mime.text import MIMEText
from dotenv import load_dotenv

load_dotenv('/home/debian/Gestion_sondes/.env')

SMTP_HOST = os.getenv("SMTP_HOST", "smtp.mail.ovh.net")
SMTP_PORT = int(os.getenv("SMTP_PORT", "465"))

SMTP_LOGIN = os.getenv("SMTP_USER")       # ex: services@domo91.fr
SMTP_PASSWORD = os.getenv("SMTP_PASS") # mot de passe OVH
MAIL_FROM = os.getenv("MAIL_FROM", SMTP_LOGIN)
MAIL_TO = os.getenv("MAIL_TO")             # ex: services@domo91.fr

def envoyer_mail(sujet: str, contenu: str, destinataires=None) -> None:
    """
    Envoi email via OVH SMTP SSL 465 (process identique à supervisor_watchdog.py).
    destinataires: str unique ou liste; si None => MAIL_TO depuis .env
    """
    if destinataires is None:
        if not MAIL_TO:
            raise ValueError("MAIL_TO manquant dans le .env")
        destinataires = [a.strip() for a in MAIL_TO.split(",") if a.strip()]
    elif isinstance(destinataires, str):
        destinataires = [destinataires]

    if not SMTP_LOGIN or not SMTP_PASSWORD:
        raise ValueError("SMTP_LOGIN / SMTP_PASSWORD manquants dans le .env")

    msg = MIMEText(contenu)
    msg["Subject"] = sujet
    msg["From"] = MAIL_FROM
    msg["To"] = ", ".join(destinataires)

    try:
        with smtplib.SMTP_SSL(SMTP_HOST, SMTP_PORT) as server:
            server.login(SMTP_LOGIN, SMTP_PASSWORD)
            server.sendmail(MAIL_FROM, destinataires, msg.as_string())
        logging.info("📧 Mail envoyé: %s -> %s", sujet, destinataires)
    except Exception as e:
        logging.error("Erreur envoi mail: %s", e)
        raise