from tht.mschema.models import Annotations, PhysicalSchema


def find_orphans(physical: PhysicalSchema, annotations: Annotations) -> list[str]:
    """Annotazioni che puntano a oggetti spariti dal fisico. Non le rimuove mai."""
    orphans: list[str] = []
    for table_name, table_ann in annotations.tables.items():
        table = physical.tables.get(table_name)
        if table is None:
            orphans.append(table_name)
            continue
        for column_name in table_ann.columns:
            if column_name not in table.columns:
                orphans.append(f"{table_name}.{column_name}")
    return orphans