Allow other grant_types in gatsby-source-wordpress (wpcom integration)

[robations]

Summary

gatsby-source-wordpress only allows the "password" grant type for integrating with wordpress.com, suggest we allow to configure authorization_code grant type as well.

Basic example

Allow to specify an authorization code as documented here using the authorization_code grant type.

auth: {
    wpcom_app_clientSecret: "xxxyyyzzz",
    wpcom_app_clientId: "999999",

    // implies authorization_code grant type:
    wpcom_app_code: "abcdefg123",
}

Motivation

This would allow:

• Better security (don't use your Wordpress.com a/c username and password outside your direct control)
• Other authn methods within Wordpress.com (sign in with Google, sign in with Apple)

[TylerBarnes]

Hi @robations , thanks for opening a feature request!
I believe we wont be adding this because we're soon deprecating our usage of the WP REST API in favour of using WPGraphQL (see this temporary repo). As far as I'm aware because of this we will be unable to support WordPress.com instances. It's been my understanding that WPGraphQL doesn't work with wp.com but I did just look into it a bit and it appears you can upload custom plugins so the new plugin & WPGraphQL may work with wp.com https://wordpress.com/support/plugins/adding-plugins/#install-plugins-via-a-zip-file

@jasonbahl do you have any knowledge about using WPGraphQL and wp.com?

If WPGraphQL and the new version of gatsby-source-wordpress can work with wp.com, then we can think about adding this feature. If that is the case please open an issue here, otherwise we'll have to unfortunately close this.

Thanks!