from abc import ABC, abstractmethod
from pathlib import Path


class AItem(ABC):
    """
    Raises:
       FileNotFoundError: if the given path does not exist on the FS
       PermissionError: if the process lacks permission to read the file metadata
    """
    def __init__(self, path: Path) -> None:
        self._path = path
        self.update()

    COLOR = 0

    def update(self) -> None:
        self._stat = self._path.lstat()
        self._permissions = self._stat.st_mode

    def fields(self) -> tuple[str, int, int]:
        return (self.name, self.size, self.permissions)

    def __str__(self) -> str:
        return f"{self.name}, {self.size}, {self.permissions}"

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

    @property
    def name(self) -> str:
        return self._path.name

    @property
    def size(self) -> int:
        return self._stat.st_size

    @property
    def permissions(self) -> int:
        return self._permissions

    @property
    def color_pair(self) -> int:
        return self.COLOR