Org-capture: Use org-expiry to create property drawer in top level headline

Question

I use org-expiry to insert the CREATED date in properties drawer by default. When I created second level headlines with my org-capture template and press C-c C-c when my cursor is at second level headline, org-expiry create the properties drawer at second level headline.

I want the properties drawer to be added to top level headline no matter where my cursor is when I finish the capture.

    * Top
    :PROPERTIES:
    :CREATED:  [2023-03-07 Tue 00:14]
    :END:
    ** Second 
    I finish my capture with my cursor being here.

Instead I got this:

    * Top
    ** Second 
    :PROPERTIES:
    :CREATED:  [2023-03-07 Tue 00:14]
    :END:
    I finish my capture with my cursor here.  

I tried to add :prepare-finalize (beginning-of-buffer) to the capture template but it doesn't work.

(setq org-capture-templates '(("f" "fleeting notes"
                                     entry
                                     (file+datetree org-fleeting-note-file)
                                     "* Top \n** Second %?"
                                     :tree-type month
                                     :prepare-finalize  (beginning-of-buffer)
                                     ))

Answer 1

I end up writing a new function that wrap org-expiry-insert-created to achieve this. For anyone who has the same problem, this is what I do:

    (defun my/org-insert-time-top-level-headline ()
      (save-excursion
        (goto-char (point-min))
        (org-expiry-insert-created)))

    (add-hook 'org-capture-prepare-finalize-hook #'my/org-insert-time-top-level-headline)

Feel free to comment if anyone has a cleaner solution.