server.js

import express, { urlencoded } from "express";
import { connect } from "mongoose";

import ShortUrl from "./models/shortUrl.js";

const app = express();

connect("mongodb://127.0.0.1/urlShortener");

app.set("view engine", "ejs");
app.use(urlencoded({ extended: false }));

app.get("/", async (req, res) => {
  const shortUrls = await ShortUrl.find();
  res.render("index", { shortUrls: shortUrls });
});

app.post("/shortUrls", async (req, res) => {
  await ShortUrl.create({ full: req.body.defaultUrl });
  res.redirect("/");
});

app.post("/shortUrls/delete/:id", async (req, res) => {
  await ShortUrl.findByIdAndDelete(req.params.id);
  res.redirect("/");
});

app.get("/:shortUrl", async (req, res) => {
  const shortUrl = await ShortUrl.findOne({ short: req.params.shortUrl });
  if (shortUrl == null) return res.sendStatus(404);

  shortUrl.clicks++;
  shortUrl.save();

  res.redirect(shortUrl.full);
})

app.listen(process.env.PORT || 3000);