WIP: add google sign in redirect

[coolaj86]

How to install this pre-release version

npm install 'github:therootcompany/auth3000#600f87d4a'

How to Migration from Client-Side Redirects

JavaScriptless Google Sign In

Now we should be able to get through the Google Sign In process with server-side redirects only.

1. Update the redirect URL in the Google dashboard: https://console.cloud.google.com/apis/dashboard
   • Ex: https://example.com/api/authn/session/oidc/accounts.google.com/redirect
2. Create a link like this:

   <a href="/api/authn/session/oidc/accounts.google.com/redirect">Google Sign-In</a>

3. Then check the URL query params for errors. If none, try to get a token.

   let errmsg = new URL(document.location.href).searchParams.get('error');
   if (errmsg) {
     window.alert(errmsg);
     return;
   }
   let resp = fetch("http://localhost:3042/api/authn/refresh", {
     "referrerPolicy": "strict-origin-when-cross-origin",
     "method": "POST",
     "mode": "cors",
     "credentials": "include"
   });
   let tokens = await resp.json();
   console.info(tokens.id_token, tokens.access_token);