import sys
import logging
import __version__

from datetime import datetime
from dateutil import tz
from config import setup_logging, load_config
from db import get_mysql_connection, get_factuges_connection, sync_catalog, sync_dealers, sync_orders
from utils import obtener_fecha_ultima_ejecucion, actualizar_fecha_ultima_ejecucion, log_system_metrics, send_orders_mail


def main():

    # Cargar la configuración
    config = load_config()

    local_tz = tz.gettz(config['LOCAL_TZ'])

    # Logging
    setup_logging()

    logging.info("== START ==")
    logging.info(f"Version: {__version__.__version__}")
    logging.info(f"Environment: {config['ENVIRONMENT']}")
    log_system_metrics()

    conn_factuges = None
    conn_mysql = None
    try:
        # Obtener la fecha de la última ejecución del programa
        last_execution_date_utc = obtener_fecha_ultima_ejecucion()
        last_execution_date_local_tz = last_execution_date_utc.astimezone(
            tz=local_tz).strftime("%Y-%m-%d %H:%M:%S")

        logging.info("Last execution (UTC): %s",
                     last_execution_date_utc.strftime("%Y-%m-%d %H:%M:%S %Z"))
        logging.info("Last execution (Local time): %s",
                     last_execution_date_local_tz)

        conn_factuges = get_factuges_connection(config)
        conn_mysql = get_mysql_connection(config)

        # Sync catalog
        sync_catalog(conn_factuges, conn_mysql, last_execution_date_local_tz)
        sync_dealers(conn_factuges, conn_mysql, last_execution_date_local_tz)
        inserted_orders = sync_orders(
            conn_factuges, conn_mysql)

        actualizar_fecha_ultima_ejecucion()

        # Confirmar los cambios
        conn_mysql.commit()
        conn_factuges.commit()

        # Enviar email
        send_orders_mail(inserted_orders)

        logging.info("== END (0) ==")
        sys.exit(0)

    except Exception as e:
        logging.error("Se ha producido un error en la última ejecución.")
        logging.error(e)
        logging.info("== END (1) ==")

        if conn_mysql is not None:
            conn_mysql.rollback()

        if conn_factuges is not None:
            conn_factuges.rollback()

        sys.exit(1)

    finally:
        if conn_factuges:
            conn_factuges.close()
        if conn_mysql:
            conn_mysql.close()


if __name__ == "__main__":
    main()