firebase.auth（）。signInWithPhoneNumber +在Node.js上表达

Question

I've got a trouble when trying to implement backend firebase Authorization. After I had read carefully the docs ( https://firebase.google.com/docs/auth/web/phone-auth ), I figured out that Authorization need to be proceded by two steps:

1. send phone
2. send code

I divided Google's example on two promises, but can't understand how to store current user and whether or not I've done everything in an appropriate way.

  app.post("/appSignInByPhone", (req, res) => {
        let {phoneNumber, applicationVerifier} = req.body;
        firebase.auth().signInWithPhoneNumber(phoneNumber, applicationVerifier)
            .then(() => res.end("Waiting for code"))
            .catch(
                error => res.json(error)
            );
});

app.post("/appSignInPhoneVerify", (req, res) => {
        let {verificationCode} = req.body;
            firebase.auth.ConfirmationResult.confirm(verificationCode)
            .then( user => res.json(user))
            .catch(
                error => res.json(error)
            );
});

Maybe there are some ways of merging these to request to one...

Answer 1

Try the following:

In step #1 either store or send back the confirmationResult you get from the fulfillment handler:

    firebase.auth().signInWithPhoneNumber(phoneNumber, applicationVerifier)
        .then((confirmationResult) => {
               // either store confirmationResult 
               // or send it to the client and ask for it in step #2)
         }).catch(
            error => res.json(error)
        );

then in step #2:

     // get the confirmationResult from the client or from some storage
     // in the server
     // for example let { verificationCode, confirmationResult } = req.body;
        confirmationResult.confirm(verificationCode)
        .then( user => res.json(user))
        .catch(
            error => res.json(error)
        );