import paho.mqtt.client as mqttClient
import mysql.connector
import sys
import os
import logging
from dotenv import load_dotenv

# Charger les variables d'environnement
load_dotenv()

# 📁 Création du dossier de logs s'il n'existe pas
dossier_logs = "/var/log/Cuisine_Meudon"
os.makedirs(dossier_logs, exist_ok=True)

# 📝 Configuration du logger
logfile = os.path.join(dossier_logs, "Cuisine_Meudon.log")
logging.basicConfig(
    filename=logfile,
    level=logging.INFO,
    format="%(asctime)s - %(levelname)s - %(message)s"
)

# Ajoute aussi un affichage console si utile :
console = logging.StreamHandler()
console.setLevel(logging.INFO)
formatter = logging.Formatter("%(asctime)s - %(levelname)s - %(message)s")
console.setFormatter(formatter)
logging.getLogger('').addHandler(console)

# 🔌 Connexion MySQL
try:
    sys.path.insert(0, "/myenv/lib/python3.11.2/site-packages")
    mydb = mysql.connector.connect(
        host=os.getenv("DB_HOST"),
        user=os.getenv("DB_USER"),
        password=os.getenv("DB_PASSWORD"),
        database=os.getenv("DB_NAME")
    )
    logging.info("Connexion MySQL réussie.")
except mysql.connector.Error as err:
    logging.error(f"Erreur de connexion MySQL : {err}")
    sys.exit(1)

# 📥 Callback MQTT
def on_message(_client, _userdata, msg):
    try:
        logging.info(f"Message reçu sur {msg.topic}: {msg.payload.decode()}")
        cursor = mydb.cursor()
        frigo_name = msg.topic.split('/')[-1]
        sql = "INSERT INTO Meudon (Sonde, Temperature) VALUES (%s, %s)"
        val = (frigo_name, msg.payload.decode())
        cursor.execute(sql, val)
        mydb.commit()
        logging.info(f"Insertion réussie : {val}")
    except Exception as e:
        logging.error(f"Erreur lors de l'insertion du message : {e}")

# 📡 Connexion MQTT
try:
    client = mqttClient.Client()
    client.username_pw_set("Bwps", "scJ5ACj2keRfI^")
    client.on_message = on_message
    client.connect("54.36.188.119", 1883, 60)
    client.subscribe("Meudon/#")
    logging.info("Connexion MQTT réussie et abonnement au topic 'Meudon/#'.")
    client.loop_forever()
except Exception as err:
    logging.error(f"Erreur MQTT : {err}")