import pathlib

from .file_blob import file_blob
from .exceptions import not_exists
from .exceptions import not_readable

class file_loader:
    def __init__(self, source: pathlib.Path) -> None:
        if not source.is_file():
            raise not_exists(source)

        self.__source = source

    def read(self) -> file_blob:
        try:
            with self.__source.open("rb") as handler:
                return file_blob(handler.read())

        except Exception as error:
            raise not_readable(self.__source, error)