XF 2.0 Warn user during old thread bump

[PJK]

I'm looking to install something that warns a user when they are about to reply to an old topic saying something like "Hey! This thread hasn't been posted on since (x date), are you sure that you want to post here? There may be a more recent thread which is discussing something similar, and the person to which you're asking a question may no longer frequent this site."

There is this old plugin from 1.5:

Unmaintained - TPU: Show Warning when bumping Old Threads

This addon will display a warning when trying to reply to old threads. The warning can be be bypassed by checking a checkbox. No database changes, threads will not be set to "locked". The age cutoff defaults to 1 year, but can be adjusted via...

xenforo.com

What is the best way to achieve this for XF 2?
Thanks.

 

[jeb35]

Try old thread notice.

Unmaintained - [XTR] Old Thread Notice

Warnings Don't upgrade this add-on with old version (File directories have been changed.) What does this add-on do? This add-on adds a warning to the selected position of threads with the most recent reply being more than a specified number of...

xenforo.com