Node Eval

app/server.js

@@ -1,31 +1,138 @@
-const express = require('express');
-const bodyParser = require('body-parser');
-const jwt = require('jsonwebtoken');
-const swaggerUi = require('swagger-ui-express');
-const YAML = require('yamljs');
-const swaggerDocument = YAML.load('./swagger.yaml'); // Replace './swagger.yaml' with the path to your Swagger file
+const express = require("express");
+const bodyParser = require("body-parser");
+const jwt = require("jsonwebtoken");
+const swaggerUi = require("swagger-ui-express");
+const YAML = require("yamljs");
+const swaggerDocument = YAML.load("./swagger.yaml");
 const app = express();
 
 app.use(bodyParser.json());
 
-// Importing the data from JSON files
-const users = require('../initial-data/users.json');
-const brands = require('../initial-data/brands.json');
-const products = require('../initial-data/products.json');
+const users = require("../initial-data/users.json");
+const brands = require("../initial-data/brands.json");
+const products = require("../initial-data/products.json");
+
+const JWT_SECRET = "your-secret-key";
+
+const authenticateToken = (req, res, next) => {
+  const authHeader = req.headers["authorization"];
+  const token = authHeader && authHeader.split(" ")[1];
+
+  if (!token) {
+    return res.status(401).json({ error: "Authentication required" });
+  }
+
+  jwt.verify(token, JWT_SECRET, (err, user) => {
+    if (err) {
+      return res.status(403).json({ error: "Invalid or expired token" });
+    }
+
+    const foundUser = users.find((u) => u.login.username === user.username);
+    if (!foundUser) {
+      return res.status(403).json({ error: "User not found" });
+    }
+
+    req.user = foundUser;
+    next();
+  });
+};
 
-// Error handling
 app.use((err, req, res, next) => {
-	console.error(err.stack);
-	res.status(500).send('Something broke!');
+  console.error(err.stack);
+  res.status(500).send("Something broke!");
+});
+
+app.use("/api-docs", swaggerUi.serve, swaggerUi.setup(swaggerDocument));
+
+app.get("/api/brands", (req, res) => {
+  res.status(200).json(brands);
+});
+
+app.post("/api/login", (req, res) => {
+  const { username, password } = req.body;
+
+  const user = users.find(
+    (user) =>
+      user.login.username === username && user.login.password === password
+  );
+
+  if (!user) {
+    return res.status(401).json({ error: "Invalid credentials" });
+  }
+
+  const token = jwt.sign({ username: user.login.username }, JWT_SECRET, {
+    expiresIn: "1h",
+  });
+
+  res.status(200).json({ token });
+});
+
+app.get("/api/me/cart", authenticateToken, (req, res) => {
+  res.status(200).json({ user: req.user });
 });
 
-// Swagger
-app.use('/api-docs', swaggerUi.serve, swaggerUi.setup(swaggerDocument));
+app.post("/api/me/cart", authenticateToken, (req, res) => {
+  const { productId, quantity } = req.body;
+
+  const product = products.find((p) => p.id === productId);
+  if (!product) {
+    return res.status(404).json({ error: "Product not found" });
+  }
+
+  const userIndex = users.findIndex(
+    (u) => u.login.username === req.user.login.username
+  );
+
+  const cartItemIndex = users[userIndex].cart.findIndex(
+    (item) => item.productId === productId
+  );
+
+  if (cartItemIndex >= 0) {
+    users[userIndex].cart[cartItemIndex].quantity = quantity;
+  } else {
+    users[userIndex].cart.push({ productId, quantity });
+  }
+
+  res.status(200).json({ user: users[userIndex] });
+});
+
+app.post("/api/me/cart/:productId", authenticateToken, (req, res) => {
+  const { productId } = req.params;
+  const { quantity } = req.body;
+
+  const userIndex = users.findIndex(
+    (u) => u.login.username === req.user.login.username
+  );
+
+  const cartItemIndex = users[userIndex].cart.findIndex(
+    (item) => item.productId === productId
+  );
+
+  if (cartItemIndex >= 0) {
+    users[userIndex].cart[cartItemIndex].quantity = quantity;
+    res.status(200).json({ user: users[userIndex] });
+  } else {
+    res.status(404).json({ error: "Product not found in cart" });
+  }
+});
+
+app.delete("/api/me/cart/:productId", authenticateToken, (req, res) => {
+  const { productId } = req.params;
+
+  const userIndex = users.findIndex(
+    (u) => u.login.username === req.user.login.username
+  );
+
+  users[userIndex].cart = users[userIndex].cart.filter(
+    (item) => item.productId !== productId
+  );
+
+  res.status(200).json({ user: users[userIndex] });
+});
 
-// Starting the server
 const PORT = process.env.PORT || 3000;
 app.listen(PORT, () => {
-	console.log(`Server running on port ${PORT}`);
+  console.log(`Server running on port ${PORT}`);
 });
 
 module.exports = app;