Roundav: a Roundcube plugin to save to/attach files from your WebDav (ex: Nextcloud)

I don't think I need to introduce Roundcube (or Roundcubemail), the well-known email web client, nor Nextcloud, the "drive" web application, so I'll just cut to the point.

I had a need to link both of those apps together, to either save an attachment to my Nextcloud or attach a file from my Nextcloud to my email.

After searching for a while I found a Roundcube plugin answering my needs: Roundcube-Plugin-Roundrive. It is itself a fork a kolab plugin. However the thing has not been updated nor alive as it looks like from the pending PR, for 9 years!

So I forked it, fixed all the bugs I could find, and published "Roundav". I did not refactor much and the code feels kind of outdated to me, but it works.

I also cached the folders list, in the session, as it can take a while to build it from WebDAV. In case of obsolete list, the user can refresh the folders list thanks to a button.

After installing the plugin (either by downloading it, running composer install), enabling it in your roundcube's config file (add roundav to the list in $config['plugins']) and configuring it to setup your WebDAV's URL and credentials, you'll have access to new email actions to save an attachment, or all of them, to your cloud

, which will then (after a minute, once it has loaded your directories structure) ask you to selected the folder where you want to save the file(s):

And also in the composition view, a "From cloud" button:

which will ask you which file(s) you want to attach from your WebDAV/Nextcloud:

I hope this will be useful to some of you as well, and work without to much hassle.