Add broken symlink diagnostics

serato_doctor/scanner.py

@@ -1,14 +1,23 @@
 from pathlib import Path
 
+from serato_doctor.models.filesystem import BrokenSymlink, FilesystemScan
 from serato_doctor.models.track import DiskTrack
 
 AUDIO_SUFFIXES = {".mp3", ".m4a", ".wav", ".aif", ".aiff", ".flac"}
 
 
-def scan_audio(folder: Path) -> list[DiskTrack]:
+def scan_filesystem(folder: Path) -> FilesystemScan:
     tracks = []
+    broken_symlinks = []
 
     for path in folder.rglob("*"):
+        if path.is_symlink() and not path.exists():
+            try:
+                target = path.readlink()
+            except OSError:
+                target = None
+            broken_symlinks.append(BrokenSymlink(path=path, target=target))
+            continue
         if not path.is_file():
             continue
         if path.suffix.lower() not in AUDIO_SUFFIXES:
@@ -28,4 +37,13 @@ def scan_audio(folder: Path) -> list[DiskTrack]:
             )
         )
 
-    return tracks
+    return FilesystemScan(
+        tracks=tuple(tracks),
+        broken_symlinks=tuple(broken_symlinks),
+    )
+
+
+def scan_audio(folder: Path) -> list[DiskTrack]:
+    """Scan audio files while preserving the prototype API."""
+
+    return list(scan_filesystem(folder).tracks)