from typing import Iterator, Protocol, Any
from pathlib import Path
from dataclasses import dataclass

@dataclass
class FileMeta:
    path: Path
    size: int
    modified_time: float
    created_time: float

@dataclass
class MountInfo:
    device: str
    mount_point: str
    fs_type: str
    options: str

@dataclass
class DiskInfo:
    device: str
    model: str
    size: int
    serial: str

class IFileScanner(Protocol):

    def scan(self, root: Path) -> Iterator[FileMeta]:
        ...

class ISystemAPI(Protocol):

    def query_mounts(self) -> list[MountInfo]:
        ...

    def query_nvmes(self) -> list[DiskInfo]:
        ...