const { send } = require('micro');
const compose = require('micro-compose');
const microAuthSlack = require('microauth-slack');
const microAuthGithub = require('microauth-github');

const githubOptions = {
  clientId: 'client_id',
  clientSecret: 'client_secret',
  callbackUrl: 'http://localhost:3000/auth/github/callback',
  path: '/auth/github',
  scope: 'user'
};

const slackOptions = {
  clientId: 'client_id',
  clientSecret: 'client_secret',
  callbackUrl: 'http://localhost:3000/auth/slack/callback',
  path: '/auth/slack',
  scope: 'identity.basic,identity.team,identity.avatar'
};

const slackAuth = microAuthSlack(slackOptions);
const githubAuth = microAuthGithub(githubOptions);

const handler = async (req, res, auth) => {

  if (!auth) {
    return send(res, 404, 'Not Found');
  }

  if (auth.err) {
    console.error(auth.err);
    return send(res, 403, 'Forbidden');
  }

  if (auth.result.provider === 'github') {
    return `${auth.result.provider} provider. Hello ${auth.result.info.login}`;
  } else if (auth.result.provider === 'slack') {
    return `${auth.result.provider} provider. Hello ${auth.result.info.user.name}`;
  } else {
    return 'Unknown provider';
  }

};

module.exports = compose(
  slackAuth,
  githubAuth
)(handler);