Stripe Checkout Demo - Wine E-commerce

The Project

A fully functional e-commerce demo showcasing Stripe payment integration with a wine storefront. Visitors can browse a curated selection of wines, add items to their cart, and complete a real checkout process using Stripe's secure payment system. The demo demonstrates modern payment processing, cart management, and order handling in a production-ready implementation.

How It Works

User browses wines → Adds to cart → Proceeds to checkout → 
Enters shipping info → Stripe payment form → Payment processed → 
Order confirmation with receipt

1. Product browsing - Browse a curated selection of wines with details and pricing
2. Cart management - Add/remove items with real-time cart updates
3. Checkout initiation - Secure checkout flow with shipping information collection
4. Stripe integration - Stripe payment form handles card processing securely
5. Payment processing - Real-time payment validation and processing
6. Order confirmation - Success page with order details and receipt

Key Features

Payment Integration

• ✅ Stripe Checkout integration with secure payment processing
• ✅ Support for multiple payment methods (cards, digital wallets)
• ✅ Real-time payment validation and error handling
• ✅ Secure handling of payment data (PCI compliant via Stripe)
• ✅ Test mode with Stripe test cards for safe demonstrations

E-commerce Features

• ✅ Product catalog with wine listings and details
• ✅ Shopping cart with add/remove functionality
• ✅ Quantity management and price calculations
• ✅ Shipping information collection
• ✅ Order summary with itemized pricing

User Experience

• ✅ Modern, clean design optimized for conversions
• ✅ Responsive layout for mobile and desktop
• ✅ Smooth checkout flow with clear progress indicators
• ✅ Error handling with user-friendly messages
• ✅ Order confirmation with transaction details

Technical Features

• ✅ Server-side payment processing for security
• ✅ Webhook integration for order status updates
• ✅ Session management for cart persistence
• ✅ Form validation and error handling
• ✅ Optimized for performance and SEO

Technical Architecture

The application demonstrates a complete e-commerce payment flow using Stripe's payment infrastructure. The frontend handles the user interface and cart management, while the backend securely processes payments through Stripe's API. Webhooks ensure order status synchronization.

Tech Stack

• Frontend: React/Next.js with TypeScript
• Styling: Tailwind CSS or similar modern CSS framework
• Payment: Stripe Checkout / Stripe Elements
• Backend: Next.js API routes or serverless functions
• Database: For order storage (optional)
• Deployment: Vercel

Code Examples

Stripe Checkout Session Creation

import Stripe from 'stripe';
 
const stripe = new Stripe(process.env.STRIPE_SECRET_KEY!);
 
export async function createCheckoutSession(cartItems: CartItem[]) {
  const session = await stripe.checkout.sessions.create({
    payment_method_types: ['card'],
    line_items: cartItems.map(item => ({
      price_data: {
        currency: 'usd',
        product_data: {
          name: item.name,
          images: [item.image],
        },
        unit_amount: item.price * 100, // Convert to cents
      },
      quantity: item.quantity,
    })),
    mode: 'payment',
    success_url: `${process.env.BASE_URL}/success?session_id={CHECKOUT_SESSION_ID}`,
    cancel_url: `${process.env.BASE_URL}/cart`,
  });
 
  return session;
}

Cart Management

interface CartItem {
  id: string;
  name: string;
  price: number;
  quantity: number;
  image: string;
}
 
export function addToCart(item: Product, cart: CartItem[]): CartItem[] {
  const existingItem = cart.find(cartItem => cartItem.id === item.id);
  
  if (existingItem) {
    return cart.map(cartItem =>
      cartItem.id === item.id
        ? { ...cartItem, quantity: cartItem.quantity + 1 }
        : cartItem
    );
  }
  
  return [...cart, { ...item, quantity: 1 }];
}

Webhook Handler for Order Updates

export async function handleStripeWebhook(req: Request) {
  const sig = req.headers['stripe-signature'];
  const webhookSecret = process.env.STRIPE_WEBHOOK_SECRET!;
 
  let event: Stripe.Event;
 
  try {
    event = stripe.webhooks.constructEvent(
      req.body,
      sig!,
      webhookSecret
    );
  } catch (err) {
    return { error: `Webhook signature verification failed` };
  }
 
  // Handle the event
  switch (event.type) {
    case 'checkout.session.completed':
      const session = event.data.object as Stripe.Checkout.Session;
      await updateOrderStatus(session.id, 'completed');
      break;
    // Handle other event types
  }
 
  return { received: true };
}

Results & Performance

The demo showcases:

• Production-ready payment flow - Complete Stripe integration following best practices
• Secure payment processing - PCI-compliant handling through Stripe's infrastructure
• Professional UX - Smooth, intuitive checkout experience
• Error resilience - Comprehensive error handling for payment failures
• Scalable architecture - Built to handle real e-commerce traffic

Technical Challenges Solved

1. Secure Payment Processing: Integration of Stripe with proper server-side handling to avoid exposing sensitive keys
2. Cart State Management: Persistent cart across page navigation and sessions
3. Webhook Reliability: Handling Stripe webhooks for order status updates and payment confirmations
4. Error Handling: User-friendly error messages for payment failures, network issues, and validation errors
5. Session Management: Maintaining checkout sessions and preventing duplicate orders

Technologies Used

• React / Next.js
• TypeScript
• Stripe API
• Stripe Checkout / Stripe Elements
• Tailwind CSS
• Vercel (deployment)

Project Overview

This project demonstrates:

• Payment Integration Expertise: Full Stripe checkout implementation with best practices
• E-commerce Development: Complete shopping cart and order management system
• Security Awareness: Proper handling of payment data and sensitive information
• API Integration: Server-side payment processing and webhook handling
• Production Readiness: Deployed, tested, and functional payment demo

The demo serves as a practical example of modern e-commerce payment integration, showcasing the ability to build secure, user-friendly checkout experiences.

Note: This is a demonstration using Stripe test mode. No real payments are processed.