import os
import sys
import json
import time

HEALTH_FILE = "/tmp/health_status.json"

if not os.path.exists(HEALTH_FILE):
    print("Healthcheck ÉCHEC : Fichier d'état introuvable.")
    sys.exit(1)

try:
    with open(HEALTH_FILE, "r", encoding="utf-8") as f:
        data = json.load(f)

    interval = int(os.getenv("CHECK_INTERVAL", "3600"))
    # Marge de sécurité (ex: 2x l'intervalle + 10 min) avant de déclarer le conteneur unhealthy
    max_allowed_age = interval * 2 + 600

    last_heartbeat = data.get("timestamp", 0)
    status = data.get("status", "unknown")
    age = time.time() - last_heartbeat

    if age > max_allowed_age:
        print(f"Healthcheck ÉCHEC : Fichier trop ancien ({int(age)}s > {max_allowed_age}s)")
        sys.exit(1)

    if status in ("ok", "running"):
        sys.exit(0)
    else:
        print(f"Healthcheck ÉCHEC : Statut du script est '{status}'")
        sys.exit(1)

except Exception as e:
    print(f"Healthcheck ÉCHEC : Erreur de lecture : {e}")
    sys.exit(1)