def _clean(value: str | None) -> str:
    return str(value or "").strip()


def mold_process_display_name(
    product_name: str | None,
    process_name: str | None,
    stamping_method: str | None = None,
) -> str:
    parts = [_clean(product_name), _clean(process_name) or "-"]
    stamping = _clean(stamping_method)
    if stamping:
        parts.append(stamping)
    return " / ".join(part for part in parts if part)


def point_mold_display_name(
    point_name: str | None,
    product_name: str | None,
    process_name: str | None,
    stamping_method: str | None = None,
) -> str:
    point = _clean(point_name)
    mold_text = mold_process_display_name(product_name, process_name, stamping_method)
    return f"{point} / {mold_text}" if point else mold_text