server.js

const express = require("express");
const path = require("path");

const app = express();
const PORT = 3000;

// Form data read karne ke liye
app.use(express.urlencoded({ extended: true }));

// JSON data read karne ke liye
app.use(express.json());

// frontend folder ki files serve karna
app.use(express.static(path.join(__dirname, "frontend")));

// Temporary users storage
const users = [];

// =========================
// REGISTRATION
// =========================

// Register page open karne ke liye
app.get("/register", (req, res) => {
    res.sendFile(path.join(__dirname, "frontend", "registration.html"));
});


app.post("/register", (req, res) => {

    console.log(req.body);

    const {
        name,
        password,
        email,
        phone,
        gender,
        day,
        month,
        year,
        languages,
        address
    } = req.body;

    if (!name || !password || !email || !phone) {
        return res.redirect("/registration.html?error=missing");
    }

    const existingUser = users.find(user => user.email === email);

    if (existingUser) {
        return res.redirect("/registration.html?error=exists");
    }

    const newUser = {
        name,
        password,
        email,
        phone,
        gender,
        dob: `${day}-${month}-${year}`,
        languages,
        address
    };

    users.push(newUser);

    console.log("New user registered:");
    console.log(newUser);

    return res.redirect("/login.html?registered=true");
});


// =========================
// LOGIN
// =========================

app.post("/login", (req, res) => {
    const { email, password } = req.body;

    const user = users.find(
        user => user.email === email && user.password === password
    );

    if (!user) {
        return res.redirect("/login.html?error=invalid");
    }

    // Success — redirect to catalogue
    return res.redirect("/catalogue.html?welcome=" + encodeURIComponent(user.name));
});
// =========================
// START SERVER
// =========================

app.listen(PORT, () => {
    console.log(`Server is running at http://localhost:${PORT}`);
});