from ..connection import connect
from ..slugify import slugify
from ..definitions.get_definition import get_definition


def relation_options(slug, related_definition_id):
    """Lignes existantes d'un objet lié, pour peupler un <select> de relation."""
    related = get_definition(slug, related_definition_id)
    conn = connect(slug)
    rows = conn.execute(f"SELECT * FROM {related['table_name']} ORDER BY id").fetchall()
    conn.close()
    display_field = related["fields"][0]["name"] if related["fields"] else "id"
    display_col = slugify(display_field).replace("-", "_")
    options = []
    for r in rows:
        r = dict(r)
        label = r.get(display_col, f"#{r['id']}")
        options.append({"id": r["id"], "label": f"{label} (#{r['id']})"})
    return options