How to add Google Contact using Nodejs API or curl request - node.js

Question

I want to add new contact details if it does not exist in my google contacts

Answer 1

I don't think Nodejs is supported in Google Contacts API. Use this guide of google contacts.
This document is intended for programmers who want to write client
applications that can interact with Google's contact lists. It
provides a series of examples of basic API interactions. These
examples come in various forms, including raw XML/HTTP requests,
Java, .NET and Python source code.
Also, you can run the sample codes using these protocols.
If you're using a UNIX system and you want to try the examples in this
document without writing any code, you may find the UNIX command-line
utilities curl or wget useful; for more
information, see the manual pages for those utilities.

Answer 2

Use https://www.npmjs.com/package/google-contacts-crud npm to read and add google contacts.

Answer 3

Google's official API for NodeJS doesn't use Contacts API, only the People API.
You can connect with Contacts API using the official googleapis library if you're already using it for other purposes by sending a request to the Contacts API after creating the auth client.
Given that you already have the access token of the user (e.g. if you generated it using Passport, here's the code:
const {google} = require("googleapis");
const authObj = new google.auth.OAuth2({
access_type: 'offline',
clientId: process.env.GOOGLE_ID,
clientSecret: process.env.GOOGLE_SECRET,
});
Refresh access token automatically before it expires
authObj.on('tokens', (tokens) => {
const access_token = tokens.access_token
if (tokens.refresh_token){
this.myTokens.refreshToken = tokens.refresh_token
// save refresh token in the database if it exists
}
this.myTokens.accessToken = tokens.access_token
// save new access token (tokens.access_token)
}
authObj.setCredentials({
access_token:this.myTokens.accessToken,
refresh_token:this.myTokens.refreshToken,
});
Make the request to Contacts API:
authObj.request({
headers:{
"GData-Version":3.0
},
params:{
"alt":"json",
//"q":"OPTIONAL SEARCH QUERY",
//"startindex":0
"orderby":"lastmodified",
"sortorder":"descending",
},
url: "https://www.google.com/m8/feeds/contacts/default/full"
}).then( response => {
console.log(response); // extracted contacts
});