Google Authen V2

This Lib implements Google APIs that use the OAuth 2.0 protocol for authentication and authorization.

With using this library, you could implement Single Sign On feature by a best simple way.

Supported versions

Angular 2+, React Class Component, Vue.

Installation

Requires Node version > 8.0 or above

npm i google-authen-v2

How to use

If you need to register an api-key from google, please check out here.

1. Example for Angular 8

import { Component, OnInit } from '@angular/core';
import * as googleAuthen from 'google-authen-v2';


@Component({
  selector: 'app-signin',
  templateUrl: './signin.component.html',
  styleUrls: ['./signin.component.css']
})

export class SiginComponent implements OnInit {
    // 1. declare variable here
  eventHandler = googleAuthen.eventHandler;

  constructor(
) { }

  ngOnInit() {
      
    //2. init function loading api and binding click's event to your signin button
    googleAuthen.handleInitGoogleApi(
        your_client_key_registered_from_google_service, 
        your_id_selector_button_login);

    // 3. this function to listen  data from library return
    this.eventHandler.on('authen-success', (authInfo) => {
      this.your_function_login(authInfo);
    });
  }

    your_function_login(userAuthen) {
      //4. handle userAuthen here : id_token, access_token ...
      // send id_token to your backend's server
      }

}

2. Example for React 16

import React from 'react';
import * as googleAuthen from 'google-authen-v2';

class LoginApp extends React.Component {

  // 1. declare variable here
  eventHandler = googleAuthen.eventHandler;

  constructor() {
    super();
  }

  componentDidMount(){

    //2. init function loading api and binding click's event to your signin button
    googleAuthen.handleInitGoogleApi(
      your_client_key_registered_from_google_service, 
      your_id_selector_button_login);

    //3. this function to listen data from library return
    this.eventHandler.on('authen-success', (authInfo) => {
      this.your_function_login(authInfo);
    });
  }

   your_function_login(userAuthen) {
      //4. handle userAuthen here : id_token, access_token...,  
      //send id_token to your backend's server
    }

  render() {
    return(
      /**form login here */
      <button id ='your_id_selector_button_login'>Login With Gmail</button>
    )
  }
}

3. Example for Vue 2.6

<template>
<div id="app">
  <button id='your_id_selector_button_login'>Login With Gmail </button>
</div>
</template>
// your <script>
import * as googleAuthen from 'google-authen-v2';
export default {

data() {
  return {
  // 1. declare variable here
    eventHandler : googleAuthen.eventHandler
  }
},
name: 'app',
mounted() {
  //2. init function loading api and binding click's event to your signin button
    googleAuthen.handleInitGoogleApi(
      your_client_key_registered_from_google_service, 
      your_id_selector_button_login);

    //3. this function to listen data from library return
    this.eventHandler.on('authen-success', (authInfo) => {
      this.your_function_login(authInfo);
    });
},
methods:{
 your_function_login(userAuthen) {
  //4. handle userAuthen here : id_token, access_token...,  
  //send id_token to your backend's server
  }
}
}
//</script>

GitHub link source code to demo

here