const { promisify } = require('util');
const { get: getClient } = require('../../client');

// Remove any Back-Channel Logout tokens for this `sub`
module.exports = async (req, config) => {
  const {
    issuer: { issuer },
  } = await getClient(config);
  const { session, backchannelLogout } = config;
  const store = (backchannelLogout && backchannelLogout.store) || session.store;
  const destroy = promisify(store.destroy).bind(store);
  await destroy(`${issuer}|${req.oidc.idTokenClaims.sub}`);
};