This blog post is part of a series. You should complete part-1 before continuing here.

Google APIs use the OAuth 2.0 protocol for authentication and authorization. Therefore we must obtain OAuth 2.0 client credentials from the Google API console.

Step-1

Go to Google project dashboard at the following link:

https://console.cloud.google.com

Step-2

Click on NEW PROJECT.

Step-3

Name the project and click the CREATE button.

Step-4

Select APIs and services, then OAuth consent screen.

Step-5

Select External and click the CREATE button.

Step-6

Fill out the application name, scroll to the bottom and click the SAVE & CONTINUE button. No other info should be filled out in the consent screen at this time.

Step-7

Click Credentials in the sidebar and click on the + CREATE CREDENTIALS button.

Step-8

Select OAuth client ID.

Step-9

Select Web application.

Also, fill out Authorized JavaScript origins and Authorised redirect URIs.

Step-10

Copy your Client ID & Client secret in a safe place.

Note that Client ID is a public token. This means that we won't have any issues if anybody gets access to this ID. The Client secret, on the other hand, is a private token. We don't want anybody to get access to this.

Continue to part-3.