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vue-google-authenticator

Handling Google sign-in and sign-out for Vue.js applications

clone of

simmatrix/vue-google-auth.

Installation

npm install vue-google-authenticator

Initialization

import GoogleAuth from 'vue-google-authenticator'

Vue.use(GoogleAuth, { client_id: 'xxxxxxxxxx-xxxxxxxxxxxxxxxxxxxxxxxxxx.apps.googleusercontent.com' })
Vue.googleAuth().load()

Ideally you shall place this in your app entry file, e.g. src/main.js

Usage - Sign-in

###(a) Handling Google sign-in, getting the one-time authorization code from Google

import Vue from 'vue'

Vue.googleAuth().signIn(function (authorizationCode) { 

  // things to do when sign-in succeeds
  
  // You can send the authorizationCode to your backend server for further processing, for example
  this.$http.post('http://your/backend/server', { code: authorizationCode, redirect_uri: 'postmessage' }).then(function (response) {
    if (response.body) {
      // ...
    }
  }, function (error) {
    console.log(error)
  })
  
}, function (error) {
  // things to do when sign-in fails
))

The authorizationCode that is being returned is the one-time code that you can send to your backend server, so that the server can exchange for its own access token and refresh token.

###(b) Alternatively, if you would like to directly get back the access_token and id_token

import Vue from 'vue'

// Just add in this line
Vue.googleAuth().directAccess()

Vue.googleAuth().signIn(function (googleUser) { 
  // things to do when sign-in succeeds
}, function (error) {
  // things to do when sign-in fails
))

The googleUser object that is being returned will be:

{
  "token_type": "Bearer",
  "access_token": "xxx",
  "scope": "xxx",
  "login_hint": "xxx",
  "expires_in": 3600,
  "id_token": "xxx",
  "session_state": {
    "extraQueryParams": {
      "authuser": "0"
    }
  },
  "first_issued_at": 1234567891011,
  "expires_at": 1234567891011,
  "idpId": "google"
}

Usage - Sign-out

Handling Google sign-out

import Vue from 'vue'

Vue.googleAuth().signOut(function () { 
  // things to do when sign-out succeeds
}, function (error) {
  // things to do when sign-out fails
))

Additional Help

Do refer to this sample login page HTML file.

If you are curious of how the entire Google sign-in flow works, please refer to the diagram below Google Sign-in Flow

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Handling Google sign-in and sign-out

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