rozdeleni do struktury

app/backups.py

@@ -0,0 +1,25 @@
+from pathlib import Path
+
+from .config import DEFAULT_BACKUP_DIR, read_env_value
+
+
+def backup_dir() -> Path:
+    return Path(read_env_value("BACKUP_DIR", DEFAULT_BACKUP_DIR))
+
+
+def list_backups():
+    path = backup_dir()
+    if not path.exists():
+        return []
+
+    return sorted(
+        path.glob("*.tar.gz"),
+        key=lambda p: p.stat().st_mtime,
+        reverse=True,
+    )
+
+
+def is_backup_path(path: Path) -> bool:
+    target = path.resolve()
+    root = backup_dir().resolve()
+    return root in target.parents and target.suffixes[-2:] == [".tar", ".gz"]