Node.js 脚本中的 Google 登录

Question

I want to integrate google sign-in in my Node.js script so I can log who used that script.
I am able to add google sign-in in webpage with help of https://developers.google.com/identity/sign-in/web/sign-in but could not find way to add google sign-in in standlaone script.

Let me try explain my intention

var googleSignIn = async function () {
    // sign in using google account and return email addess on succesfull sign in
}

var work = async function () {
    // step 1: log in first using google
    var email = await googleSignIn()

    // step 2: talk to backed server api on succesfull login
    if (email) {
        console.log('calling backend api')
    } else {
        console.log('you need to login first')
    }
}

work().then(function () {
    console.log('done')
}).catch(function (error) {
    throw error
})

I want to implement googleSignIn method. How can I do that?

Answer 1

Your script would need to operate in the same manner as a desktop app, and perform these actions:

• Create an authorization redirect URL in terms of Authorization Code Flow (PKCE)
• Open the system browser, which will manage redirects and the user login
• Receive the response in your app, via either a Loopback or Private URI Scheme notification
• The response contains an authorization code, which needs to be swapped for tokens
• You can then call your API with an access token

A typical URL would be a value like this:

https://accounts.google.com/oauth2/v2.0/authorize?
client_id=y792f434f
&response_type=code
&redirect_uri=com.mycompany.myapp:/callback
&scope=...
&state=...
&code_challenge=...
&code_challenge_method=S256

It is a tricky flow to implement though - in case useful there are further details in my Desktop OAuth Blog Posts , and code samples you can run...