from dataclasses import dataclass
from pathlib import Path
from typing import Optional, Tuple

from serato_doctor.models.track import DiskTrack


@dataclass(frozen=True)
class BrokenSymlink:
    """A symbolic link whose target cannot be resolved."""

    path: Path
    target: Optional[Path]


@dataclass(frozen=True)
class FilesystemScan:
    """Read-only findings from one traversal of a music folder."""

    tracks: Tuple[DiskTrack, ...]
    broken_symlinks: Tuple[BrokenSymlink, ...]