This is a starter repository from where a beginner can take inspiration to add OAuth2 system in their Golang application. This project doesn't use any 3rd party package. For OAuth2 flow, the official golang.org/x/oauth2 package is used.

1. When I was learning, I didn't find a good source and code example to impliment OAuth2 in Golang.
2. There are very easy to use package like Goth, but I don't want to add an additional 3rd party dependency.
3. Token refresh and building HTTP client using the access token is not clear in the documentation.

1. Clone this repository

   git clone https://github.com/hrishiksh/golang-oauth2-starter.git

2. Download the requirements

   go mod download
   go mod tidy

3. Get Client ID and Client Secret from the Oauth provider. I am using Google for example. Go to the Google cloud credential page for getting client id and secret.

4. Add the Client ID and secret as an environment variable and run the application

   CLIENT_ID="clientid" CLIENT_SEC="secret" go run .

1. Don't add your logo in Google OAuth consent screen. Otherwise you have to varify your app from Google.