To obtain a Google OAuth Client ID and Client Secret, follow these step-by-step instructions:
Go to the Google Cloud Console.
Sign in with your Google account if you are not already logged in.
In the Google Cloud Console Dashboard, click the project dropdown at the top.
Click New Project.
Enter the project name, and optionally, select an organization.
Click Create.
Navigate to the APIs & Services section:
Click the hamburger menu (☰) in the top left corner.
Go to APIs & Services > OAuth Consent Screen.
Choose the User Type:
External: For users outside your organization (common for most public apps).
Internal: Restricted to users in your Google Workspace.
Click Create.
Fill out the App Information:
App name.
User support email.
Add a developer contact email.
Click Save and Continue (you can skip Scopes and Test Users for now).
Go to APIs & Services > Library.
Search for the APIs you need (e.g., Google Drive API, YouTube Data API, etc.).
Click Enable for the APIs relevant to your project.
Go to APIs & Services > Credentials.
Click Create Credentials at the top.
Select OAuth 2.0 Client ID.
Choose an Application Type:
Web Application: For web-based apps.
Desktop App, Android, iOS, or others as applicable.
Configure the Authorized Redirect URIs:
For web apps: Add the URIs where your app will redirect users after authentication (e.g., https://yourapp.com/auth/google/callback).
For local testing: Use http://localhost:port/auth/google/callback.
Click Create.
Once created, you will see the Client ID and Client Secret displayed.
Click Download JSON to save the credentials for your application.
Keep the Client ID and Client Secret safe and never expose them publicly.
Use environment variables or secure storage to handle these credentials in your app.
Use the Client ID and Client Secret in your application to authenticate users via Google OAuth. Most libraries (e.g., Google API Client Libraries for Python, JavaScript, etc.) will guide you through this setup.
Implement OAuth in your app using the Client ID and Client Secret.
Test the authentication flow to ensure users can log in and access the necessary Google services.