Based on user_orcid from Lars Naesbye Christensen, DeIC for ownCloud - https://github.com/deic-dk/user_orcid

This app will use the API from https://orcid.org/ to access and archive users' ORCID information.

• nextcloud 10 (tested on Nextcloud up to NC13)

Copy the app files to the nextcloud/apps/ directory. In the Admin Interface, fill the data with the API credential (Client ID + Client secret) from https://orcid.org/developer-tools. The redirect URL displayed in the Admin Interface (Nextcloud) will be used to setup your API on the ORCID Interface.

In the Personal Settings Interface, your users will identify themself using Orcid OAuth2 and grant access to the nextcloud. The OrcID (0000-00xx-xxxx-xxxx) and an access_token are saved into the database:

• When the user clicks the 'Confirm ORCID' button, they are taken to orcid.org (in a new window) for authentication.
• After successful login and authentication, orcid.org service sends data back to nextcloud via access token.
• The token is used to obtain ORCID and associated name from the service.
• The user's ORCID is then stored in the nextcloud database for access by other apps, and displayed next to the button.

Requesting ORCID from another app:

$orcid = \OCA\Orcid\Service\ApiService::getUserOrcid($username);