effector / effector-gatekeeper

☄️ now.sh stateless function for OAuth GitHub flow then exchange authorization code for a token

OAuth GitHub Gatekeeper

API

1. Exchage temporary code for a token

   GET /api/auth?code=<CODE>
   

OAuth Steps

Also see the documentation on Github.

1. Redirect users to request GitHub access.

   GET https://github.com/login/oauth/authorize
   

2. GitHub redirects back to your site including a temporary code you need for the next step.

   You can grab it like so:

   const params = new URLSearchParams(location.search)
   const code = params.get('code')

3. Request the actual token using your instance of Gatekeeper, which knows your OAUTH_CLIENT_SECRET.

   const GITHUB_GATEKEEPER_URL = process.env.NODE_ENV === 'development'
     ? 'http://localhost:3000/api/auth'
     : 'https://gatekeeper.YOUNAME.now.sh/api/auth'
   
   const url = new URL(GITHUB_GATEKEEPER_URL)
   url.searchParams.set('code', code)
   try {
     const res = await fetch(url)
     if (res.ok) {
       const {token} = await res.json()
       console.log(token)
     }
   } catch (e) {
     // bad code
   }

Setup your Gatekeeper

1. Clone it

   git clone [email protected]:kobzarvs/github-gatekeeper.git
   

2. Install Dependencies

   cd gatekeeper && yarn
   

3. Run local dev environment

   First of all you must create .env file:

   OAUTH_CLIENT_SECRET=<OAUTH_CLIENT_SECRET>
   OAUTH_CLIENT_ID=<OAUTH_CLIENT_ID>
   

   now dev
   

Deploy on now.sh

1. Add secrets env variables

   now secrets add OAUTH_CLIENT_SECRET <OAUTH_CLIENT_SECRET> 
   now secrets add OAUTH_CLIENT_ID <OAUTH_CLIENT_ID>
   

2. Deploy service

   now