#!/usr/bin/env python3
"""
Modbus to MQTT Bridge Service

This service reads temperature and humidity data from a Modbus TCP server
and publishes the data to an MQTT broker.

Usage:
    python main.py

Author: POE Project
"""

import time
import logging
import sys
import os

if __name__ == "__main__":
    # Setup logging first
    logging.basicConfig(
        level=logging.INFO, 
        format='%(asctime)s - %(levelname)s - %(message)s',
        handlers=[logging.StreamHandler(sys.stdout)]
    )
    
    logging.info("POE Sensor Bridge starting up...")
    
    try:
        # Start health check server first (non-blocking)
        try:
            from health_check import create_health_server
            health_server = create_health_server()
            if health_server:
                logging.info("Health check server started successfully")
            else:
                logging.warning("Health check server failed to start, continuing without it")
        except Exception as e:
            logging.warning(f"Health check setup failed: {e}, continuing without it")
            health_server = None
        
        # Give health server time to initialize
        time.sleep(2)
        
        # Import and start main loop
        from sensor_bridge import main_loop
        
        logging.info("Starting main sensor loop...")
        main_loop()
        
    except ImportError as e:
        logging.error(f"Import error: {e}")
        sys.exit(1)
    except KeyboardInterrupt:
        logging.info("Received keyboard interrupt, shutting down...")
    except Exception as e:
        logging.error(f"Fatal error: {e}", exc_info=True)
        sys.exit(1)
    finally:
        # Cleanup health server if it exists
        try:
            if 'health_server' in locals() and health_server:
                health_server.stop()
        except:
            pass
        logging.info("POE Sensor Bridge shutdown complete")