[DEV] Investigate Standardized Google Client

[DConnorFong]

Development Task 🔧

What? ❓

Here are some ways we are opening different clients for our Google integrations

const client = new google.auth.JWT(keys.client_email, null, keys.private_key, [
    'https://www.googleapis.com/auth/spreadsheets',
]);

and

const oauth2Client = new google.auth.OAuth2(keys.client_id, keys.client_secret, keys.redirect_uris[0]);

Particularily OAuth2 vs JWT

Could you dig around the Google API docs and see if this makes a difference for different integrations (google.mail, google.sheets)? If not I would probably like to work towards building a client factory that just makes all of these in one place.

[DConnorFong]

It actually looks like you can use OAuth2 for everything, and JWT for a subset of those things (with the benefit of performance avoiding an extra API call)

https://developers.google.com/identity/protocols/oauth2/service-account

For performance reasons may make sense to generate both of them, but simplicity to just generate an OAuth2 for everything.