Add more meta information to trove entries

trovedb/fs.py

@@ -1,6 +1,7 @@
 import os
 import sqlite3
 import tempfile
+import datetime as dt
 from pathlib import Path
 from typing import Optional, Dict, List, Self, Iterable
 from .trove import Note, Trove, TreeNote, BlobNote, Blob, Tree, BadNoteType, TreeEntry, NoteNotFound
@@ -24,6 +25,24 @@ class FSNote(Note):
             raise ValueError("Note not yet saved to disk")
         return self._inode
 
+    @property
+    def mtime(self):
+        """Return modification time as datetime."""
+        stat = self._path.stat()
+        return dt.datetime.fromtimestamp(stat.st_mtime, tz=dt.timezone.utc)
+
+    @property
+    def readonly(self) -> bool:
+        """Check if the note is readonly based on file permissions."""
+        if self._inode is None:
+            return False
+        return not os.access(self._path, os.W_OK)
+
+    @property
+    def mime(self) -> str:
+        """Return MIME type, defaulting to generic binary stream."""
+        return "application/octet-stream"
+
     @property
     def _path(self) -> Path:
         if self._fs_path is not None:
@@ -60,6 +79,11 @@ class FSBlobNote(FSNote, BlobNote):
             pass
 
 class FSTreeNote(FSNote, TreeNote):
+    @property
+    def mime(self) -> str:
+        """Return MIME type for directory/tree nodes."""
+        return "inode/directory"
+
     def link(self, name: str, note: Note):
         if not isinstance(note, FSBlobNote):
             raise BadNoteType("Only blob notes can be linked")