router.post("/register", (req, res) => {
  const userProps = req.body;
  const { email } = userProps;

  User.findOne({ email })
    .then(user => {
      if (user) {
        return res.status(400).json({ errormessage: "User already exists." });
      } else {
        const avatar = gravatar.url(email, {
          s: "200", // Size
          r: "pg", // Rating
          d: "mm" // Default
        });

        const newUser = User.create({ ...userProps, avatar });

        Joi.validate(newUser, userValidationSchema, {
          abortEarly: false
        });

        bcrypt.genSalt(10, (err, salt) => {
          bcrypt.hash(newUser.password, salt, (err, hash) => {
            if (err) throw err;
            newUser.password = hash;
            newUser
              .save()
              .then(user => res.json(user))
              .catch(err => res.status(400).json(err));
          });
        });
      }
    })
    .catch(e => console.log(e));
});