Google Code-in

Make an OAuth2 Discourse plugin that allows a user to log in to a Discourse site using MusicBrainz credentials (or get as close to making one as possible with current MB code). There are several already existing Discourse modules for using OAuth2 authentication, so there should be plenty of code to look at and borrow from, but the general Ruby knowledge in the Meta/MusicBrainz community is rather low, so don't expect much help on the Ruby side.

The plugin will likely be published at https://github.com/metabrainz/ but should be of code style and quality to hypothetically accepted into upstream Discourse (unlikely to happen, but will ensure better compatibility and being able to better gain help from Discourse community in the future).

See http://chatlogs.metabrainz.org/brainzbot/metabrainz/msg/3462425/ for more information as well as some possibly helpful pointers.