Add cart icon and cart page for shopping cart functionality

frontend/src/App.tsx

@@ -5,8 +5,10 @@ import About from './components/About';
 import Footer from './components/Footer';
 import Products from './components/entity/product/Products';
 import Login from './components/Login';
+import Cart from './components/entity/cart/Cart';
 import { AuthProvider } from './context/AuthContext';
 import { ThemeProvider } from './context/ThemeContext';
+import { CartProvider } from './context/CartContext';
 import AdminProducts from './components/admin/AdminProducts';
 import { useTheme } from './context/ThemeContext';
 
@@ -24,6 +26,7 @@ function ThemedApp() {
             <Route path="/about" element={<About />} />
             <Route path="/products" element={<Products />} />
             <Route path="/login" element={<Login />} />
+            <Route path="/cart" element={<Cart />} />
             <Route path="/admin/products" element={<AdminProducts />} />
           </Routes>
         </main>
@@ -37,7 +40,9 @@ function App() {
   return (
     <AuthProvider>
       <ThemeProvider>
-        <ThemedApp />
+        <CartProvider>
+          <ThemedApp />
+        </CartProvider>
       </ThemeProvider>
     </AuthProvider>
   );

frontend/src/components/Navigation.tsx

@@ -1,12 +1,15 @@
 import { Link } from 'react-router-dom';
 import { useAuth } from '../context/AuthContext';
 import { useTheme } from '../context/ThemeContext';
+import { useCart } from '../context/CartContext';
 import { useState } from 'react';
 
 export default function Navigation() {
   const { isLoggedIn, isAdmin, logout } = useAuth();
   const { darkMode, toggleTheme } = useTheme();
+  const { getItemCount } = useCart();
   const [adminMenuOpen, setAdminMenuOpen] = useState(false);
+  const itemCount = getItemCount();
 
   return (
     <nav className={`${darkMode ? 'bg-dark/95' : 'bg-white/95'} backdrop-blur-sm fixed w-full z-50 shadow-md transition-colors duration-300`}>
@@ -68,6 +71,19 @@ export default function Navigation() {
             </div>
           </div>
           <div className="flex items-center space-x-4">
+            {/* Cart Icon */}
+            <Link to="/cart" className="relative p-2">
+              <img 
+                src="/cart.png" 
+                alt="Shopping Cart"
+                className="h-6 w-6"
+              />
+              {itemCount > 0 && (
+                <span className="absolute -top-1 -right-1 bg-primary text-white text-xs rounded-full h-5 w-5 flex items-center justify-center font-medium">
+                  {itemCount > 99 ? '99+' : itemCount}
+                </span>
+              )}
+            </Link>
             <button
               onClick={toggleTheme}
               className="p-2 rounded-full focus:outline-none transition-colors"

frontend/src/components/entity/cart/Cart.tsx

@@ -0,0 +1,209 @@
+import { useState } from 'react';
+import { useCart } from '../../../context/CartContext';
+import { useTheme } from '../../../context/ThemeContext';
+
+export default function Cart() {
+  const { items, removeFromCart, updateQuantity, getCartTotal } = useCart();
+  const { darkMode } = useTheme();
+  const [couponCode, setCouponCode] = useState('');
+  const [appliedDiscount, setAppliedDiscount] = useState(0);
+
+  const subtotal = getCartTotal();
+  const discountAmount = subtotal * appliedDiscount;
+  const shipping = items.length > 0 ? 10 : 0;
+  const grandTotal = subtotal - discountAmount + shipping;
+
+  const handleApplyCoupon = () => {
+    // Simple coupon logic - 5% discount for any valid coupon
+    if (couponCode.trim()) {
+      setAppliedDiscount(0.05);
+    }
+  };
+
+  const handleUpdateCart = () => {
+    // Refresh cart - in real app this might sync with server
+    alert('Cart updated successfully!');
+  };
+
+  const handleProceedToCheckout = () => {
+    // Navigate to checkout - placeholder for now
+    alert('Proceeding to checkout...');
+  };
+
+  if (items.length === 0) {
+    return (
+      <div className={`min-h-screen ${darkMode ? 'bg-dark' : 'bg-gray-100'} pt-20 pb-16 px-4 transition-colors duration-300`}>
+        <div className="max-w-7xl mx-auto">
+          <h1 className={`text-3xl font-bold ${darkMode ? 'text-light' : 'text-gray-800'} mb-8 transition-colors duration-300`}>
+            Shopping Cart
+          </h1>
+          <div className={`${darkMode ? 'bg-gray-800' : 'bg-white'} rounded-lg p-8 text-center shadow-lg transition-colors duration-300`}>
+            <p className={`${darkMode ? 'text-gray-400' : 'text-gray-600'} text-lg`}>
+              Your cart is empty
+            </p>
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div className={`min-h-screen ${darkMode ? 'bg-dark' : 'bg-gray-100'} pt-20 pb-16 px-4 transition-colors duration-300`}>
+      <div className="max-w-7xl mx-auto">
+        <h1 className={`text-3xl font-bold ${darkMode ? 'text-light' : 'text-gray-800'} mb-8 transition-colors duration-300`}>
+          Shopping Cart
+        </h1>
+
+        <div className="flex flex-col lg:flex-row gap-8">
+          {/* Cart Items Table */}
+          <div className="flex-grow">
+            <div className={`${darkMode ? 'bg-gray-800' : 'bg-white'} rounded-lg overflow-hidden shadow-lg transition-colors duration-300`}>
+              <table className="w-full">
+                <thead>
+                  <tr className={`${darkMode ? 'bg-gray-900 text-light' : 'bg-gray-100 text-gray-800'} transition-colors duration-300`}>
+                    <th className="px-4 py-3 text-left">S. No</th>
+                    <th className="px-4 py-3 text-left">Product Image</th>
+                    <th className="px-4 py-3 text-left">Product Name</th>
+                    <th className="px-4 py-3 text-center">Unit Price</th>
+                    <th className="px-4 py-3 text-center">Quantity</th>
+                    <th className="px-4 py-3 text-center">Total</th>
+                    <th className="px-4 py-3 text-center">Remove</th>
+                  </tr>
+                </thead>
+                <tbody>
+                  {items.map((item, index) => {
+                    const itemPrice = item.discount
+                      ? item.price * (1 - item.discount)
+                      : item.price;
+                    const itemTotal = itemPrice * item.quantity;
+
+                    return (
+                      <tr 
+                        key={item.productId} 
+                        className={`${darkMode ? 'border-gray-700' : 'border-gray-200'} border-t transition-colors duration-300`}
+                      >
+                        <td className={`px-4 py-4 ${darkMode ? 'text-light' : 'text-gray-800'}`}>
+                          {index + 1}
+                        </td>
+                        <td className="px-4 py-4">
+                          <div className={`w-24 h-24 ${darkMode ? 'bg-gray-700' : 'bg-gray-100'} rounded-lg overflow-hidden transition-colors duration-300`}>
+                            <img
+                              src={`/${item.imgName}`}
+                              alt={item.name}
+                              className="w-full h-full object-contain p-2"
+                            />
+                          </div>
+                        </td>
+                        <td className={`px-4 py-4 ${darkMode ? 'text-light' : 'text-gray-800'} font-medium`}>
+                          {item.name}
+                        </td>
+                        <td className={`px-4 py-4 text-center ${darkMode ? 'text-light' : 'text-gray-800'}`}>
+                          ${itemPrice.toFixed(2)}
+                        </td>
+                        <td className="px-4 py-4">
+                          <div className="flex items-center justify-center">
+                            <input
+                              type="number"
+                              min="1"
+                              value={item.quantity}
+                              onChange={(e) => {
+                                const value = parseInt(e.target.value);
+                                if (!isNaN(value) && value >= 1) {
+                                  updateQuantity(item.productId, value);
+                                }
+                              }}
+                              className={`w-16 px-2 py-1 text-center ${darkMode ? 'bg-gray-700 text-light border-gray-600' : 'bg-white text-gray-800 border-gray-300'} border rounded transition-colors duration-300`}
+                            />
+                          </div>
+                        </td>
+                        <td className={`px-4 py-4 text-center ${darkMode ? 'text-light' : 'text-gray-800'} font-medium`}>
+                          ${itemTotal.toFixed(2)}
+                        </td>
+                        <td className="px-4 py-4 text-center">
+                          <button
+                            onClick={() => removeFromCart(item.productId)}
+                            className="text-red-500 hover:text-red-700 transition-colors"
+                            aria-label={`Remove ${item.name} from cart`}
+                          >
+                            <svg className="w-6 h-6 mx-auto" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16" />
+                            </svg>
+                          </button>
+                        </td>
+                      </tr>
+                    );
+                  })}
+                </tbody>
+              </table>
+
+              {/* Coupon and Update Cart Section */}
+              <div className={`px-4 py-4 ${darkMode ? 'bg-gray-900' : 'bg-gray-50'} flex flex-col sm:flex-row items-center justify-between gap-4 transition-colors duration-300`}>
+                <div className="flex items-center gap-2 w-full sm:w-auto">
+                  <input
+                    type="text"
+                    placeholder="Coupon Code"
+                    value={couponCode}
+                    onChange={(e) => setCouponCode(e.target.value)}
+                    className={`flex-grow sm:flex-grow-0 px-4 py-2 ${darkMode ? 'bg-gray-800 text-light border-gray-700 placeholder-gray-500' : 'bg-white text-gray-800 border-gray-300 placeholder-gray-400'} border rounded-lg focus:border-primary focus:ring-1 focus:ring-primary focus:outline-none transition-colors duration-300`}
+                  />
+                  <button
+                    onClick={handleApplyCoupon}
+                    className="px-6 py-2 bg-primary hover:bg-accent text-white rounded-lg font-medium transition-colors whitespace-nowrap"
+                  >
+                    Apply Coupon
+                  </button>
+                </div>
+                <button
+                  onClick={handleUpdateCart}
+                  className="w-full sm:w-auto px-6 py-2 bg-primary hover:bg-accent text-white rounded-lg font-medium transition-colors"
+                >
+                  Update Cart
+                </button>
+              </div>
+            </div>
+          </div>
+
+          {/* Order Summary */}
+          <div className="w-full lg:w-80">
+            <div className={`${darkMode ? 'bg-gray-800' : 'bg-white'} rounded-lg shadow-lg p-6 transition-colors duration-300`}>
+              <h2 className={`text-xl font-bold ${darkMode ? 'text-light' : 'text-gray-800'} mb-6 text-center border-b ${darkMode ? 'border-gray-700' : 'border-gray-200'} pb-4 transition-colors duration-300`}>
+                Order Summary
+              </h2>
+
+              <div className="space-y-4">
+                <div className="flex justify-between">
+                  <span className={`${darkMode ? 'text-gray-400' : 'text-gray-600'}`}>Subtotal</span>
+                  <span className={`${darkMode ? 'text-light' : 'text-gray-800'} font-medium`}>${subtotal.toFixed(2)}</span>
+                </div>
+
+                {appliedDiscount > 0 && (
+                  <div className="flex justify-between">
+                    <span className={`${darkMode ? 'text-gray-400' : 'text-gray-600'}`}>Discount ({Math.round(appliedDiscount * 100)}%)</span>
+                    <span className="text-red-500 font-medium">-${discountAmount.toFixed(2)}</span>
+                  </div>
+                )}
+
+                <div className="flex justify-between">
+                  <span className={`${darkMode ? 'text-gray-400' : 'text-gray-600'}`}>Shipping</span>
+                  <span className={`${darkMode ? 'text-light' : 'text-gray-800'} font-medium`}>${shipping.toFixed(2)}</span>
+                </div>
+
+                <div className={`flex justify-between pt-4 border-t ${darkMode ? 'border-gray-700' : 'border-gray-200'}`}>
+                  <span className={`${darkMode ? 'text-light' : 'text-gray-800'} font-bold`}>Grand Total</span>
+                  <span className={`${darkMode ? 'text-light' : 'text-gray-800'} font-bold`}>${grandTotal.toFixed(2)}</span>
+                </div>
+              </div>
+
+              <button
+                onClick={handleProceedToCheckout}
+                className="w-full mt-6 px-6 py-3 bg-primary hover:bg-accent text-white rounded-lg font-medium transition-colors"
+              >
+                Proceed To Checkout
+              </button>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}

frontend/src/components/entity/product/Products.tsx

@@ -3,6 +3,7 @@ import axios from 'axios';
 import { useQuery } from 'react-query';
 import { api } from '../../../api/config';
 import { useTheme } from '../../../context/ThemeContext';
+import { useCart } from '../../../context/CartContext';
 
 interface Product {
   productId: number;
@@ -28,6 +29,7 @@ export default function Products() {
   const [showModal, setShowModal] = useState(false);
   const { data: products, isLoading, error } = useQuery('products', fetchProducts);
   const { darkMode } = useTheme();
+  const { addToCart } = useCart();
 
   const filteredProducts = products?.filter(product => 
     product.name.toLowerCase().includes(searchTerm.toLowerCase()) ||
@@ -44,8 +46,16 @@ export default function Products() {
   const handleAddToCart = (productId: number) => {
     const quantity = quantities[productId] || 0;
     if (quantity > 0) {
-      // TODO: Implement cart functionality
-      alert(`Added ${quantity} items to cart`);
+      const product = products?.find(p => p.productId === productId);
+      if (product) {
+        addToCart({
+          productId: product.productId,
+          name: product.name,
+          price: product.price,
+          imgName: product.imgName,
+          discount: product.discount,
+        }, quantity);
+      }
       setQuantities(prev => ({
         ...prev,
         [productId]: 0