Create login routes

src/app.js

@@ -7,7 +7,6 @@ const app = express();
 const handlebars = require("express-handlebars");
 const Handlebars = require("handlebars");
 const path = require("path");
-const pgp = require("pg-promise")(); // To connect to the Postgres DB from the node server
 const bodyParser = require("body-parser");
 const session = require("express-session"); // To set the session object. To store or access session data, use the `req.session`, which is (generally) serialized as JSON by the store.
 const bcrypt = require("bcryptjs"); //  To hash passwords

src/routes/login-and-registration/login-routes.js

@@ -0,0 +1,51 @@
+const express = require("express");
+const router = express.Router();
+const bcrypt = require("bcryptjs");
+const db = require("../config/database");
+
+// Redirect to the /login endpoint
+app.get("/", (req, res) => {
+	res.redirect("/home");
+});
+
+// Render login page for /login route
+app.get("/login", (req, res) => {
+	res.render("/");
+});
+
+// Trigger login form to check database for matching username and password
+app.post("/login", async (req, res) => {
+	try {
+		// Check if username exists in DB
+		const user = await db.oneOrNone(
+			"SELECT * FROM users WHERE username = $1",
+			req.body.username
+		);
+
+		if (!user) {
+			// Redirect user to login screen if no user is found with the provided username
+			return res.redirect("/register");
+		}
+
+		// Check if password from request matches with password in DB
+		const match = await bcrypt.compare(req.body.password, user.password);
+
+		// Check if match returns no data
+		if (!match) {
+			// Render the login page with the message parameter
+			return res.render("/", { message: "Password does not match" });
+		} else {
+			// Save user information in the session variable
+			req.session.user = user;
+			req.session.save();
+
+			// Redirect user to the home page
+			res.redirect("/");
+		}
+	} catch (error) {
+		// Direct user to login screen if no user is found with matching password
+		res.redirect("/register");
+	}
+});
+
+module.exports = loginRoutes;