Capstone 2 update resources [readme.md] for details

individual/backend/csp2-reciproco/controllers/cart.js

@@ -1,72 +1,109 @@
-// userController.js
-const User = require('../model/Cart');
+const Cart = require('../model/Cart');
 
 exports.addToCart = async (req, res) => {
+  const { userId } = req.body;
+  const { productId, quantity } = req.body;
+
   try {
-    const { userId, productId, quantity } = req.body;
+    let cart = await Cart.findOne({ userId });
 
-    // Check if the user exists
-    const user = await User.findById(userId);
-    if (!user) {
-      return res.status(404).json({ message: 'User not found.' });
-    }
+    if (!cart) {
+      cart = new Cart({
+        userId,
+        items: [{ productId, quantity }],
+      });
+    } else {
+      const existingItem = cart.items.find(item => item.productId.toString() === productId);
 
-    // Check if the product exists
-    const product = await Product.findById(productId);
-    if (!product) {
-      return res.status(404).json({ message: 'Product not found.' });
+      if (existingItem) {
+        existingItem.quantity += quantity;
+      } else {
+        cart.items.push({ productId, quantity });
       }
-
-    // Check if the product is active
-    if (!product.isActive) {
-      return res.status(400).json({ message: 'Product is not active.' });
     }
 
-    // Check if the quantity is valid
-    if (quantity <= 0) {
-      return res.status(400).json({ message: 'Invalid quantity.' });
+    await cart.save();
+
+    res.json({ message: 'Item added to cart successfully' });
+  } catch (error) {
+    console.error(error);
+    res.status(500).json({ error: 'Internal Server Error' });
   }
+};
+
+exports.updateQuantity = async (req, res) => {
+  const { userId, productId, quantity } = req.body;
 
-    // Check if the user already has a cart
+  try {
     let cart = await Cart.findOne({ userId });
 
-    // If the user doesn't have a cart, create a new one
     if (!cart) {
-      cart = new Cart({ userId, products: [], totalAmount: 0 });
+      return res.status(404).json({ error: 'Cart not found for the user' });
     }
 
-    // Check if the product is already in the cart
-    const existingProduct = cart.products.find(
-      (cartProduct) => cartProduct.productId.toString() === productId
-    );
+    const existingItem = cart.items.find(item => item.productId.toString() === productId);
 
-    // If the product is already in the cart, update the quantity and subtotal
-    if (existingProduct) {
-      existingProduct.quantity += quantity;
-      existingProduct.subtotal = existingProduct.quantity * existingProduct.price;
-    } else {
-      // If the product is not in the cart, add it
-      cart.products.push({
-        productId,
-        productName: product.name,
-        quantity,
-        price: product.price,
-        subtotal: quantity * product.price,
-      });
+    if (!existingItem) {
+      return res.status(404).json({ error: 'Product not found in the cart' });
+    }
+
+    existingItem.quantity = quantity;
+
+    await cart.save();
+
+    res.json({ message: 'Quantity updated successfully' });
+  } catch (error) {
+    console.error(error);
+    res.status(500).json({ error: 'Internal Server Error' });
   }
+};
 
-    // Update the total amount in the cart
-    cart.totalAmount = cart.products.reduce(
-      (total, product) => total + product.subtotal,
-      0
-    );
+exports.removeFromCart = async (req, res) => {
+  const { userId, productId } = req.body;
+
+  try {
+    let cart = await Cart.findOne({ userId });
+
+    if (!cart) {
+      return res.status(404).json({ error: 'Cart not found for the user' });
+    }
+
+    cart.items = cart.items.filter(item => item.productId.toString() !== productId);
 
-    // Save the updated cart
     await cart.save();
 
-    return res.status(200).json({ message: 'Product added to cart successfully.' });
+    res.json({ message: 'Product removed from cart successfully' });
   } catch (error) {
     console.error(error);
-    return res.status(500).json({ message: 'Internal server error.' });
+    res.status(500).json({ error: 'Internal Server Error' });
+  }
+};
+
+exports.getCartDetails = async (req, res) => {
+  const { userId } = req.body;
+
+  try {
+    const cart = await Cart.findOne({ userId }).populate('items.productId', 'name price');
+
+    if (!cart) {
+      return res.status(404).json({ error: 'Cart not found for the user' });
     }
+
+    // Calculate subtotal for each item
+    const itemsWithSubtotal = cart.items.map(item => ({
+      ...item.toObject(),
+      subtotal: item.quantity * item.productId.price,
+    }));
+
+    // Calculate total price for all items
+    const totalPrice = itemsWithSubtotal.reduce((total, item) => total + item.subtotal, 0);
+
+    res.json({
+      items: itemsWithSubtotal,
+      totalPrice,
+    });
+  } catch (error) {
+    console.error(error);
+    res.status(500).json({ error: 'Internal Server Error' });
   }
+};

individual/backend/csp2-reciproco/model/Cart.js

@@ -1,25 +1,23 @@
 const mongoose = require('mongoose');
 
-const cartProductSchema = new mongoose.Schema({
+const cartItemSchema = new mongoose.Schema({
   productId: {
     type: mongoose.Schema.Types.ObjectId,
     ref: 'Product',
     required: true,
   },
-  productName: { type: String, required: true },
-  quantity: { type: Number, required: true },
-  price: { type: Number, required: true },
-  subtotal: { type: Number, required: true },
+  quantity: {
+    type: Number,
+    default: 1,
+  },
 });
 
 const cartSchema = new mongoose.Schema({
   userId: {
-    type: mongoose.Schema.Types.ObjectId,
-    ref: 'User',
+    type: String,
     required: true,
   },
-  products: [cartProductSchema],
-  totalAmount: { type: Number, required: true },
+  items: [cartItemSchema],
 });
 
 const Cart = mongoose.model('Cart', cartSchema);

individual/backend/csp2-reciproco/readme.md

@@ -104,3 +104,37 @@ http://localhost:3000/user/retrieveUser
 
   "userId": "6554ac8dd7fbf9ee90217e77"
 }
+
+CART - Add to Cart
+--> Must use token
+http://localhost:3000/cart/add-to-cart
+{
+  "userId": "655396dcc8ea29f42422e214",
+  "productId": "6553a54566c4c86c39034b55",
+  "quantity": 5
+}
+
+CART - Delete Item
+http://localhost:3000/cart/remove-from-cart
+--> Must use token
+{
+  "userId": "655396dcc8ea29f42422e214",
+  "productId": "6553a55666c4c86c39034b59",
+  "quantity": 1
+}
+
+CART - Update Quantity
+http://localhost:3000/cart//update-quantity
+--> Must use token
+{
+  "userId": "655396dcc8ea29f42422e214",
+  "productId": "6553a55666c4c86c39034b59",
+  "quantity": 2000  // Update to the desired quantity
+}
+
+CART - Cart Details [ Total ]
+--> Must use token
+http://localhost:3000/cart/cart-details
+{
+    "userId": "655396dcc8ea29f42422e214"
+}

individual/backend/csp2-reciproco/routes/cart.js

@@ -1,10 +1,20 @@
 const express = require('express');
 const router = express.Router();
-const cart  = require('../controllers/cart');
-const auth = require("../auth")
+const cartController = require('../controllers/cart');
+const auth = require("../auth");
 
-const { authenticateToken, } = auth
-// Add route to handle adding a product to the cart
-router.post('/add-to-cart', authenticateToken, cart.addToCart);
+const { authenticateToken } = auth;
+
+// Route to add an item to the cart
+router.post('/add-to-cart', authenticateToken, cartController.addToCart);
+
+// Route to update product quantity in the cart
+router.put('/update-quantity', authenticateToken, cartController.updateQuantity);
+
+// Route to remove a product from the cart
+router.delete('/remove-from-cart', authenticateToken, cartController.removeFromCart);
+
+// Route to get cart details
+router.get('/cart-details', authenticateToken, cartController.getCartDetails);
 
 module.exports = router;