import openstack
from openstack.connection import Connection
from watcher_visio.settings import OPENSTACK_CLOUD, OPENSTACK_REGION_NAME


def check_openstack() -> dict:
    """
    Lightweight check that OpenStack is reachable (connection only).
    Returns {"status": "ok"} or {"status": "error", "message": "..."}.
    """
    try:
        conn = openstack.connect(cloud=OPENSTACK_CLOUD, region_name=OPENSTACK_REGION_NAME)
        if conn is None:
            return {"status": "error", "message": "No connection"}
        return {"status": "ok"}
    except Exception as e:
        return {"status": "error", "message": str(e) or "Connection failed"}


def get_connection() -> Connection:
    connection = openstack.connect(cloud=OPENSTACK_CLOUD, region_name=OPENSTACK_REGION_NAME)
    return connection