I don’t know much about using the built-in Oauth2 user-agent flow, but if you get stuck or are interested in manually managing things, this might help you:
Sure…here goes:
Google App creation
You first need to create an OAuth client app in the Google Console at https://console.cloud.google.com and navigate to “Credentials” in the API section.
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Click on “Create credentials” and choose “OAuth client ID”
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Select “Web application”, provide a name (not terribly important what it is,) and provide the “Authorized redirect URI’s” for you bubble app. These need to match a page created later in this process, so for this example we ar…