auth.js

import passport from 'passport';
import { Strategy, ExtractJwt } from 'passport-jwt';

export default (app) => {
  const Users = app.datasource.models.Users;
  const opts = {};
  opts.secretOrKey = app.config.jwtSecret;
  opts.jwtFromRequest = ExtractJwt.fromAuthHeader();

  const strategy = new Strategy(opts, (payload, done) => {
    Users.findById(payload.id)
        .then((user) => {
          if (user) {
            return done(null, {
              id: user.id,
              email: user.email,
            });
          }
          return done(null, false);
        })
        .catch(error => done(error, null));
  });

  passport.use(strategy);

  return {
    initialize: () => passport.initialize(),
    authenticate: () => passport.authenticate('jwt', app.config.jwtSession),
  };
};