import json

import switch_client
import todo
from extractors.xe_page import fetch_tables

PATH = "/dual_image_status.html"


def get_dual_image_status(session) -> list[dict]:
    """Returns one dict per unit (Active image, Next-Active image).

    Note: the page also has a "Dual Image Descriptions" table (per-image
    version/description) that uses a header shape (TD.tableHeaderright +
    plain TD.defright rows, no defleft labels) our generic scalar/tabular
    parser doesn't handle -- skipped for now, not needed for this data."""
    tables = fetch_tables(session, PATH)
    return tables["Dual Image Status"]["rows"]


if __name__ == "__main__":
    session = switch_client.get_session()
    print(json.dumps(get_dual_image_status(session), indent=2))
    todo.mark_implemented(switch_client.BASE_URL + PATH)