const { send } = require('micro');
const microAuthGoogle = require('microauth-google');
const options = {
  clientId: 'CLIENT_ID',
  clientSecret: 'CLIENT_SECRET',
  callbackUrl: 'https://localhost:3000/auth/google/callback',
  path: '/auth/google',
  scope: 'https://www.googleapis.com/auth/plus.me'
};
const googleAuth = microAuthGoogle(options);
// third `auth` argument will provide error or result of authentication
// so it will {err: errorObject} or {result: {
//  provider: 'google',
//  accessToken: 'blahblah',
//  info: userInfo,
//  client: OAuth2Client instance
// }}
module.exports = googleAuth(async (req, res, auth) => {
  if (!auth) {
    return send(res, 404, 'Not Found');
  }
  if (auth.err) {
    // Error handler
    return send(res, 403, 'Forbidden');
  }
  return `Hello ${auth.result.info.display_name}`;
});