from pathlib import Path
from typing import Any, Generic, Iterator, TypeVar

TData = TypeVar("TData")


class Content(Generic[TData]):
    def __init__(self, path: Path, data: TData, language: str | None = None) -> None:
        self.__path = path
        self.__data = data
        self.__language = language

    @property
    def path(self) -> Path:
        return self.__path

    @property
    def language(self) -> str | None:
        return self.__language

    @property
    def data(self) -> TData:
        return self.__data

    def __str__(self) -> str:
        return str(self.__data)


class ContentField(Content[Any]):
    def __getitem__(self, key: Any) -> Any:
        return ContentField(self.path, self.data.get(key), self.language)

    def __iter__(self) -> Iterator[Any]:
        for it in self.data:
            yield ContentField(self.path, it, self.language)

    def __str__(self) -> str:
        return str(self.data)