My first attempt for org-create-hierarchy

lisp/org-config/org-create-hierarchy.el

@@ -0,0 +1,47 @@
+;;; org-create-hierarchy.el ---  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2025 Benson Chu
+
+;; Author: Benson Chu <bensonchu457@gmail.com>
+;; Created: [2025-12-26 10:33]
+
+;; This file is not part of GNU Emacs
+
+;; This program is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; Code:
+
+(defun org-create-hierarchy (time format-strings &optional depth reverse)
+  (cl-labels ((create-hierarchy (time format-strings depth)
+                (when-let* ((fmt (car format-strings))
+                            (timestr (format-time-string fmt time)))
+                  (let ((str (concat (make-string depth ?*) " " timestr)))
+                    (or (prog1 (search-forward str nil t)
+                          (end-of-line))
+                        (progn
+                          (unless reverse
+                            (when (org-get-next-sibling)
+                              (previous-line)
+                              (end-of-line)))
+                          (insert "\n" str)))
+                    (create-hierarchy time (cdr format-strings) (1+ depth))))))
+    (goto-char (point-min))
+    (create-hierarchy time format-strings (or depth 1))))
+
+;; (org-create-hierarchy (current-time) '("%Y" "%B"))
+
+(provide 'org-create-hierarchy)
+;;; org-create-hierarchy.el ends here