如何将现有 Firebase Auth 与 Google Actions 关联起来

Question

I have a mobile app that has data & auth on Firebase. I want to create a Google Action for these same users.

This post asked basically the same question and the top reply says "However, you can use Firebase Auth if you're willing to setup your own OAuth2 server. If you set one up you can have them login using Firebase Sign-In, generate the token and store it against their Firebase ID, and issue that token to the Assistant client. When you get that token back, you can easily associate it back to the Firebase ID."

Does anybody have an example or a more in depth guideline of how to accomplish this?

Answer 1

That post you linked is quite old and AoG is changing fairly rapidly. Case-in-point, they released their new "conversational actions" just last month (2020-06), and with these it is quite easy to use Google accounts and firebase auth.

The docs for thisare here BUT don't use the code provided in the docs - I found it to be quite broken as of 2020-07 - use the sample actions on their github instead.

This gives the user an easy way to connect their google account to your action with just their voice resulting in a Firebase authentication.

Now the part I'm not sure about is, if your action and your app use use the same GCP/Firebase project and the same client ID, will they produce the same 'user uid' in firebase auth. Probably not, but if so you would be done and the whole thing would be very easy.