Google OAuth 2.0 with Express.js

This project shows how to integrate Google OAuth 2.0 with an Express.js application.

Setup

1. Clone the repository:

   git clone https://github.com/namelesskull/simple-google-oauth.git
   cd simple-google-oauth

2. Install dependencies:

   npm install

3. Create a .env file:

   touch .env

   Copy this .env.example to .env and add your Google OAuth credentials:

   GOOGLE_CLIENT_ID="YOUR_GOOGLE_CLIENT_ID"
   GOOGLE_CLIENT_SECRET="YOUR_GOOGLE_CLIENT_SECRET"
   SESSION_SECRET="YOUR_SESSION_SECRET"
   

4. Configure Google OAuth:

   • Go to Google Cloud Console.
   • Create a project and set up OAuth 2.0 credentials.
   • Add the redirect URI http://localhost:3000/auth/google/callback.

Usage

1. Start the server:

   npm start

   or using nodemon

   npm run dev

2. Authenticate:

   • Visit http://localhost:3000/ and follow the link to sign in with Google.

Troubleshooting

• redirect_uri_mismatch: Ensure the redirect URI matches in Google Cloud Console and your app.
• Missing client_id: Check your .env file for correct GOOGLE_CLIENT_ID and GOOGLE_CLIENT_SECRET.

License

MIT License For more details, check the Google OAuth 2.0 documentation.

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