Implement OAuth2 configuration import in PyQGIS API

[florentfgrs]

Feature description

Possibility with QGIS Desktop

In the authentication manager of QGIS Desktop, it is possible to import an OAuth2 configuration with a button.

To do this, you need to:

1. Go to the Authentication tab in the QGIS options window.
2. Click on the + button to add an authentication method.
3. Choose the OAuth2 authentication type.
4. You can then click on an import button.

A window will appear, allowing us to import an OAuth2 config file.

Requested Features

What I would like is to be able to access this import function directly in the PyQGIS API for plugin development.

This import function comes from the QgsAuthOAuth2Edit class, but this class is not available in the PyQGIS API.

I'd like to be able to do a few things like this:

newAU = QgsAuthMethodConfig()
newAU.setId(QgsApplication.authManager().uniqueConfigId())
newAU.setName(“foo”)
newAU.setMethod(“OAuth2”)
newAU.setJsonConfig("my_config_file.json")

Everything is possible in this code except the setJsonConfig method.

Would it be possible to implement the necessary functionality? 🙏

Thank you in advance!

Additional context

No response

[Guts]

I guess Isogeo could also be interested in this feature since they manage their authentication through a (Google) conventional client_secrets.json: https://help.isogeo.com/doc-plugin-qgis/en/usage/authentication/

cc @SimonSAMPERE