from __future__ import annotations

from typing import TYPE_CHECKING
from typing import Any

from narwhals._duckdb.dataframe import map_duckdb_dtype_to_narwhals_dtype
from narwhals.dependencies import get_duckdb

if TYPE_CHECKING:
    from types import ModuleType

    from narwhals.typing import DTypes


class DuckDBInterchangeSeries:
    def __init__(self, df: Any, dtypes: DTypes) -> None:
        self._native_series = df
        self._dtypes = dtypes

    def __narwhals_series__(self) -> Any:
        return self

    def __native_namespace__(self) -> ModuleType:
        return get_duckdb()  # type: ignore[no-any-return]

    def __getattr__(self, attr: str) -> Any:
        if attr == "dtype":
            return map_duckdb_dtype_to_narwhals_dtype(
                self._native_series.types[0], self._dtypes
            )
        msg = (  # pragma: no cover
            f"Attribute {attr} is not supported for metadata-only dataframes.\n\n"
            "If you would like to see this kind of object better supported in "
            "Narwhals, please open a feature request "
            "at https://github.com/narwhals-dev/narwhals/issues."
        )
        raise NotImplementedError(msg)  # pragma: no cover