import mysql.connector
from datetime import datetime, timedelta
import time
from dotenv import load_dotenv
import os
from pathlib import Path
import ovh

if os.name != 'nt':
    log_dir = Path('/home/debian/Gestion_sondes/Logs')
else:
    log_dir = Path.cwd() / 'Logs'

log_dir.mkdir(parents=True, exist_ok=True)

load_dotenv()
ENVOI_SMS = os.getenv("ENVOI_SMS") == "1"

# --- Config MySQL ---
config = {
    "host": os.getenv("DB_HOST"),
    "user": os.getenv("DB_USER"),
    "password": os.getenv("DB_PASSWORD"),
    "database": os.getenv("DB_NAME")
}

print("▶️ Lancement Monitor.py")

# --- Fonction d’envoi de SMS ---
def envoyer_sms_ovh(message, lieu):
    client = ovh.Client(
        endpoint=os.getenv("OVH_ENDPOINT"),      # ex : 'ovh-eu'
        application_key=os.getenv("OVH_APP_KEY"),
        application_secret=os.getenv("OVH_APP_SECRET"),
        consumer_key=os.getenv("OVH_CONSUMER_KEY"),
    )

    try:
        services = client.get('/sms/')
        if not services:
            print("❌ Aucun service SMS OVH trouvé", flush=True)
            return

        service_name = services[0]
        numero_dest = os.getenv("NUMERO_DESTINATAIRE")

        result = client.post(f'/sms/{service_name}/jobs',
            sender='Monitor',
            message=message,
            receivers=[numero_dest],
            noStopClause=True
        )
        print(f"📱 SMS envoyé à {numero_dest} pour {lieu}. Job ID : {result['ids']}", flush=True)

    except Exception as e:
        print(f"Erreur envoi SMS : {e}", flush=True)

# --- Suivi des alertes actives pour rappels ---
alertes_actives = {}

# --- Fonction de surveillance ---
def surveiller():
    global alertes_actives
    log_entries = []
    try:
        conn = mysql.connector.connect(**config)
        cursor = conn.cursor(dictionary=True)

        cursor.execute("SELECT DISTINCT Lieu FROM 'Chambres_froides'")
        lieux = [row['Lieu'] for row in cursor.fetchall()]

        for lieu in lieux:
            table_temp = lieu
            table_alertes = f"Alertes_{lieu}"

            cursor.execute("SELECT Sonde, Temp_Max FROM 'Chambres_froides' WHERE Lieu=%s AND Etat='ON'", (lieu,))
            sondes = cursor.fetchall()

            for sonde in sondes:
                nom_sonde = sonde['Sonde']
                seuil = sonde['Temp_Max']

                cursor.execute(f"""
                    SELECT Date, Temperature FROM {table_temp}
                    WHERE Sonde = %s
                    ORDER BY Date DESC LIMIT 6
                """, (nom_sonde,))
                releves = cursor.fetchall()

                for r in releves:
                    log_entries.append({
                        "Date": r['Date'],
                        "Lieu": lieu,
                        "Sonde": nom_sonde,
                        "Température": r['Temperature'],
                        "Seuil": seuil,
                        "État": "Dépassement" if r['Temperature'] > seuil else "Normal"
                    })

                if len(releves) == 6:
                    toutes_hors_seuil = all(r['Temperature'] > seuil for r in releves)
                    plus_ancien = releves[-1]['Date']
                    maintenant = datetime.now()

                    if toutes_hors_seuil and (maintenant - plus_ancien >= timedelta(minutes=30)):
                        cursor.execute(f"""
                            SELECT COUNT(*) as total FROM {table_alertes}
                            WHERE Sonde=%s AND Status='En cours'
                        """, (nom_sonde,))
                        en_cours = cursor.fetchone()
                        if en_cours['total'] == 0:
                            cursor.execute(
                                f"INSERT INTO {table_alertes} (Sonde, Debut_defaut, Status) VALUES (%s, NOW(), 'En cours')",
                                (nom_sonde,)
                            )
                            print(f"🚨 Alerte déclenchée pour {nom_sonde} ({lieu})", flush=True)

                            message = (
                                f"La sonde '{nom_sonde}' du site '{lieu}' a dépassé le seuil de {seuil}°C "
                                f"depuis plus de 30 minutes.\nHeure : {maintenant.strftime('%Y-%m-%d %H:%M:%S')}"
                            )
                            if ENVOI_SMS:
                                envoyer_sms_ovh(message, lieu)

                            alertes_actives[nom_sonde] = maintenant

                        else:
                            dernier_envoi = alertes_actives.get(nom_sonde)
                            if dernier_envoi and (maintenant - dernier_envoi >= timedelta(hours=1)):
                                message = (
                                    f"La sonde '{nom_sonde}' du site '{lieu}' est TOUJOURS en dépassement de seuil (>{seuil}°C).\n"
                                    f"Heure : {maintenant.strftime('%Y-%m-%d %H:%M:%S')}"
                                )
                                if ENVOI_SMS:
                                    envoyer_sms_ovh(message, lieu)
                                alertes_actives[nom_sonde] = maintenant

                # Vérifier retour à la normale (Acquittement)
                cursor.execute(f"""
                    SELECT Temperature FROM {table_temp}
                    WHERE Sonde = %s
                    ORDER BY Date DESC LIMIT 1
                """, (nom_sonde,))
                derniere = cursor.fetchone()
                if derniere and derniere['Temperature'] <= seuil:
                    cursor.execute(f"""
                        UPDATE {table_alertes}
                        SET Status = 'Acquitté'
                        WHERE Sonde = %s AND Status IN ('En cours', 'Test')
                    """, (nom_sonde,))

                    if nom_sonde in alertes_actives:
                        del alertes_actives[nom_sonde]

        conn.commit()
        cursor.close()
        conn.close()

        if log_entries:
            import pandas as pd
            df_logs = pd.DataFrame(log_entries)

            df_logs.to_csv(log_dir / "monitor.csv", sep=";", index=False)

            if os.name != 'nt':
                df_logs.to_csv("/var/log/monitor.csv", sep=";", index=False)

    except Exception as e:
        print(f"Erreur : {e}", flush=True)

# --- Boucle principale ---
while True:
    print(f"📡 Vérification à {datetime.now()}", flush=True)
    surveiller()
    time.sleep(300)  # 5 minutes