from fastapi import HTTPException, status

from app.core.config import get_settings


READ_ONLY_OPERATION_DISABLED = "This service is read-only; data mutation operations are disabled"


def require_operations_enabled(detail: str = READ_ONLY_OPERATION_DISABLED) -> None:
    """Reject mutation-oriented endpoints when the product is running read-only."""

    if get_settings().read_only_mode:
        raise HTTPException(
            status_code=status.HTTP_405_METHOD_NOT_ALLOWED,
            detail=detail,
        )