Merge pull request #740 from beingatushar/main

Added Project: url-shortner using Node, Express, MongoDB

Author: spandey1296

url-shortener/app.js

@@ -0,0 +1,55 @@
+const express = require("express");
+const app = express();
+const mongoose = require("mongoose");
+const ShortUrl = require("./models/shortUrl");
+const PORT = process.env.PORT || 3000;
+const methodOverride = require("method-override");
+
+mongoose.connect("mongodb://127.0.0.1/urlShortener", {
+  useNewUrlParser: true,
+  useUnifiedTopology: true,
+});
+
+app.use(methodOverride("_method"));
+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("/", async (req, res) => {
+  if (req.body.short) {
+    await ShortUrl.create({
+      full: req.body.fullUrl,
+      short: req.body.short,
+      createdAt: new Date(),
+      lastVisitedAt: new Date(),
+    });
+  } else {
+    await ShortUrl.create({
+      full: req.body.fullUrl,
+      createdAt: new Date(),
+      lastVisitedAt: new Date(),
+    });
+  }
+  res.redirect("/");
+});
+app.delete("/:shortUrl", async (req, res) => {
+  await ShortUrl.findOneAndDelete({ short: req.params.shortUrl });
+  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.lastVisitedAt = new Date();
+  shortUrl.save();
+
+  res.redirect(shortUrl.full);
+});
+
+app.listen(PORT);

url-shortener/models/shortUrl.js

@@ -0,0 +1,32 @@
+const mongoose = require('mongoose')
+const shortId = require('shortid')
+const shortUrlSchema = new mongoose.Schema({
+    full: {
+        type: String,
+        required: true
+    },
+    short: {
+        type: String,
+        required: true,
+        unique: true,
+        default: shortId.generate
+    },
+    createdAt: {
+        type: Date,
+        required: true,
+        default: new Date(),
+        unmodifiable: true
+
+    },
+    lastVisitedAt: {
+        type: Date,
+        required: true,
+        default: new Date()
+    },
+    clicks: {
+        type: Number,
+        required: true,
+        default: 0
+    }
+})
+module.exports = mongoose.model('ShortUrl', shortUrlSchema);