mail-proxy/server/routes/users.js

const router = require("express").Router();

const User = require("../model/User");

router.get("/", async (req, res) => {
  const user = await User.find();
  res.json(user);
});

router.post("/", async (req, res) => {
  console.log("POSTing user");
  const { email, username } = req.body;

  // Don't accept duplicate emails
  if (await User.query().findWhere("email", email).count() > 0) {
    res.status(400).send("Email already taken");
    return;
  }

  const user = await User.insert({
        username,
        email,
  });
  res.json(user);
});

router.get("/:idOrName", async (req, res) => {
  const idOrName = req.params.idOrName;

  const userById = await User.query().findById(idOrName);
  if (userById) {
    res.send(userById);
  } else {
      const userById = await User.query().findOne("username", idOrName);
      if (!userById) return res.status(404).send("User not found");

      const { id, username } = userById;
      res.send({
        id,
        username
      });
  }
});

router.delete("/:id", async (req, res) => {
  const id = req.params.id;

  const result = await User.deleteOne({ _id: id });
  res.send(result);
});

module.exports = router;