refactor

include/providers/encrypt/encrypt_provider.hpp

@@ -65,10 +65,17 @@ private:
   static void create_item_meta(api_meta_map &meta, bool directory,
                                const api_file &file);
 
+  auto do_directory_operation(
+      const std::string &api_path,
+      std::function<api_error(const encrypt_config &cfg,
+                              const std::string &source_path)>
+          callback) const -> api_error;
+
   auto
   process_directory_entry(const std::filesystem::directory_entry &dir_entry,
                           const encrypt_config &cfg,
                           std::string &api_path) const -> bool;
+
   void remove_deleted_files();
 
 public: