Xero oAuth 2 authorisation in laravel

I have a laravel PHP project application. The server creates an invoice on Xero and sends the user an email etc...

I have been using oAuth 1 (Private App - PHP SDK) with no issues, but now need to switch to oAuth 2. As there is no front end-user on the server, can this still be accomplished?

All the documentation I read, seems to need a manual login to grant authorization and get an access token?

Thanks in advance :-)

via Chebli Mohamed