html – Admin back end – get URL of file using file browser

I would like to be able to get the URL of a html file that has been uploaded to a folder via FTP.

So if I go into a post in the admin back end of WordPress, I would like there to be a custom field with a file browser that would list the html files and subdirectories in: wp-content/uploads/articles/

Then when a file has been selected it will log the url of that file so it can be retrieved on the front end.

I’ve done countless searches on Google and here and can’t seem to find the answer I’m looking for. Would just like to know if it can or cant’t be done so I can plan accordingly.

Any insight would be greatly appreciated!