auth.js

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

module.exports = app => {
  const Users = app.db.models.Users;
  const cfg = app.libs.config;
  const params = {
    secretOrKey: cfg.jwtSecret,
    jwtFromRequest: ExtractJwt.fromAuthHeader(),
  };
  const strategy = new Strategy(params, (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: () => {
      return passport.initialize();
    },
    authenticate: () => {
      return passport.authenticate('jwt', cfg.jwtSession);
    },
  };
};