basic functionality added

app.js

@@ -0,0 +1,38 @@
+const express = require("express");
+const mongoose = require("mongoose");
+const ShortUrl = require("./models/shortUrl");
+const app = express();
+
+mongoose.connect("mongodb://localhost/urlShortener", {
+  useNewUrlParser: true,
+  useUnifiedTopology: true,
+});
+
+app.set("view engine", "ejs");
+app.use(express.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.fullUrl });
+
+  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(4000, () => {
+  console.log(`server started on port 4000
+  Click on the link :  http://localhost:4000/`);
+});

models/shortUrl.js

@@ -0,0 +1,20 @@
+const mongoose = require("mongoose");
+const shortId = require("shortid");
+const shortUrlSchema = new mongoose.Schema({
+  full: {
+    type: String,
+    required: [true, "please enter the full url"],
+  },
+  short: {
+    type: String,
+    required: [true, "please enter the short url"],
+    default: shortId.generate,
+  },
+  clicks: {
+    type: Number,
+    required: true,
+    default: 0,
+  },
+});
+
+module.exports = mongoose.model("ShortUrl", shortUrlSchema);