Polish mobile shopping rows and stabilize backup archives

nouri/backup.py

@@ -52,13 +52,25 @@ def export_backup_archive(
         payload["tables"][table_name] = [dict(row) for row in rows]
 
     uploads_root = Path(upload_folder)
-    with zipfile.ZipFile(archive_path, "w", compression=zipfile.ZIP_DEFLATED) as archive:
-        archive.writestr("backup.json", json.dumps(payload, ensure_ascii=False, indent=2))
+    uploads_snapshot_dir = Path(tempfile.mkdtemp(prefix="nouri-backup-uploads-"))
+    try:
         if uploads_root.exists():
             for file_path in uploads_root.rglob("*"):
+                if not file_path.is_file():
+                    continue
+                relative_path = file_path.relative_to(uploads_root)
+                snapshot_path = uploads_snapshot_dir / relative_path
+                snapshot_path.parent.mkdir(parents=True, exist_ok=True)
+                shutil.copy2(file_path, snapshot_path)
+
+        with zipfile.ZipFile(archive_path, "w", compression=zipfile.ZIP_DEFLATED) as archive:
+            archive.writestr("backup.json", json.dumps(payload, ensure_ascii=False, indent=2))
+            for file_path in uploads_snapshot_dir.rglob("*"):
                 if file_path.is_file():
-                    relative_path = file_path.relative_to(uploads_root)
+                    relative_path = file_path.relative_to(uploads_snapshot_dir)
                     archive.write(file_path, f"uploads/{relative_path.as_posix()}")
+    finally:
+        shutil.rmtree(uploads_snapshot_dir, ignore_errors=True)
 
     return archive_path, backup_name