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SkyArtShop/docs/ARCHITECTURE.md
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2026-01-01 22:24:30 -06:00

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# 🏗️ Production-Ready Architecture Implementation
## ✅ What We've Created
Your SkyArtShop project now has a modern, production-ready structure matching industry best practices.
---
## 📂 Complete Structure
```
SkyArtShop/
├── frontend/ # React + TypeScript Frontend
│ ├── src/
│ │ ├── @types/ # TypeScript type definitions
│ │ │ └── index.ts # Shared types (User, Product, ApiResponse, etc.)
│ │ │
│ │ ├── api/ # Backend communication layer
│ │ │ ├── client.ts # Axios instance with auth interceptors
│ │ │ ├── products.ts # Product API calls
│ │ │ └── auth.ts # Authentication API calls
│ │ │
│ │ ├── assets/ # Static files (images, fonts, icons)
│ │ │ └── .gitkeep
│ │ │
│ │ ├── components/ # Reusable UI components
│ │ │ └── .gitkeep # Button, Card, Modal, etc.
│ │ │
│ │ ├── hooks/ # Custom React hooks
│ │ │ ├── useAuth.ts # Authentication state management
│ │ │ └── useFetch.ts # Generic data fetching
│ │ │
│ │ ├── pages/ # Route-level page components
│ │ │ └── .gitkeep # HomePage, ProductDetail, AdminDashboard, etc.
│ │ │
│ │ ├── routes/ # Router configuration
│ │ │ └── index.tsx # All route definitions + protected routes
│ │ │
│ │ ├── templates/ # Page layouts (Header, Sidebar, Footer)
│ │ │ └── .gitkeep
│ │ │
│ │ ├── themes/ # Design system (colors, fonts, spacing)
│ │ │ └── default.ts # Theme configuration
│ │ │
│ │ ├── utils/ # Pure utility functions
│ │ │ ├── format.ts # Currency, date formatters
│ │ │ └── debounce.ts # Debounce utility
│ │ │
│ │ ├── validators/ # Client-side validation
│ │ │ └── index.ts # Form validation rules
│ │ │
│ │ ├── app.tsx # Root component (providers, router)
│ │ ├── main.tsx # Entry point (ReactDOM.render)
│ │ ├── index.css # Global styles + Tailwind
│ │ └── vite-env.d.ts # Vite environment types
│ │
│ ├── index.html # HTML shell
│ ├── vite.config.ts # Vite configuration
│ ├── tailwind.config.ts # Tailwind CSS config
│ ├── tsconfig.json # TypeScript config
│ ├── package.json # Dependencies + scripts
│ ├── .env # Environment variables
│ ├── .gitignore # Git ignore rules
│ └── readme.md # Frontend documentation
├── backend/ # Node.js + Express + TypeScript Backend
│ ├── prisma/
│ │ └── schema.prisma # Database schema (Prisma ORM)
│ │
│ ├── src/
│ │ ├── @types/ # TypeScript type definitions
│ │ │ └── index.ts # Shared backend types
│ │ │
│ │ ├── config/ # Configuration files
│ │ │ ├── app.ts # App settings (port, JWT, CORS)
│ │ │ └── database.ts # Database connection config
│ │ │
│ │ ├── controllers/ # Request handlers
│ │ │ └── .gitkeep # productController, authController, etc.
│ │ │
│ │ ├── services/ # Business logic layer
│ │ │ └── .gitkeep # productService, authService, etc.
│ │ │
│ │ ├── models/ # Data access layer (Prisma models)
│ │ │ └── .gitkeep # Product, User, Order, etc.
│ │ │
│ │ ├── routes/ # API endpoint definitions
│ │ │ └── .gitkeep # products.ts, auth.ts, users.ts, etc.
│ │ │
│ │ ├── middlewares/ # Express middleware
│ │ │ ├── authenticate.ts # JWT authentication
│ │ │ ├── errorHandler.ts # Global error handling
│ │ │ └── requestLogger.ts# Request logging
│ │ │
│ │ ├── validators/ # Request validation
│ │ │ └── productValidator.ts # Zod schemas
│ │ │
│ │ ├── helpers/ # Pure utility functions
│ │ │ ├── response.ts # Consistent API responses
│ │ │ └── jwt.ts # Token generation/verification
│ │ │
│ │ └── server.ts # Entry point (Express setup)
│ │
│ ├── tsconfig.json # TypeScript config
│ ├── package.json # Dependencies + scripts
│ ├── .env # Environment variables
│ ├── .env.example # Example env file
│ ├── .gitignore # Git ignore rules
│ ├── biome.json # Linter/formatter config
│ └── readme.md # Backend documentation
└── docs/
└── ARCHITECTURE.md # This file
```
---
## 🎯 Key Features Implemented
### Frontend Features
**Type-safe API client** with automatic token injection
**Custom hooks** for authentication and data fetching
**Protected routes** with automatic redirect
**Centralized theming** for consistent design
**Utility functions** for formatting and validation
**Vite + React Router + Tailwind** ready to go
### Backend Features
**Layered architecture** (Controllers → Services → Models)
**JWT authentication** with middleware
**Global error handling** with consistent responses
**Request validation** with Zod schemas
**Prisma ORM** with PostgreSQL schema
**Security middleware** (Helmet, CORS, Compression)
**Request logging** for debugging
---
## 🚀 Getting Started
### 1. Install Frontend Dependencies
```bash
cd frontend
npm install
```
### 2. Install Backend Dependencies
```bash
cd backend
npm install
```
### 3. Set Up Database
```bash
cd backend
npx prisma generate
npx prisma migrate dev
```
### 4. Start Development Servers
**Terminal 1 - Backend:**
```bash
cd backend
npm run dev
# Runs on http://localhost:3000
```
**Terminal 2 - Frontend:**
```bash
cd frontend
npm run dev
# Runs on http://localhost:5173
```
---
## 📝 How to Add a New Feature
### Example: Add "Wishlist" Feature
#### Backend Steps
1. **Update Database Schema** (`backend/prisma/schema.prisma`):
```prisma
model Wishlist {
id Int @id @default(autoincrement())
userId Int
productId Int
createdAt DateTime @default(now())
user User @relation(fields: [userId], references: [id])
product Product @relation(fields: [productId], references: [id])
}
```
1. **Run Migration**:
```bash
npx prisma migrate dev --name add_wishlist
```
1. **Create Service** (`backend/src/services/wishlistService.ts`):
```typescript
import { prisma } from '../config/database';
export async function addToWishlist(userId: number, productId: number) {
return await prisma.wishlist.create({
data: { userId, productId }
});
}
export async function getUserWishlist(userId: number) {
return await prisma.wishlist.findMany({
where: { userId },
include: { product: true }
});
}
```
1. **Create Controller** (`backend/src/controllers/wishlistController.ts`):
```typescript
import { Request, Response } from 'express';
import * as wishlistService from '../services/wishlistService';
import { sendSuccess } from '../helpers/response';
export async function addItem(req: AuthRequest, res: Response) {
const { productId } = req.body;
const userId = req.user!.userId;
const item = await wishlistService.addToWishlist(userId, productId);
sendSuccess(res, item, 'Added to wishlist', 201);
}
```
1. **Create Routes** (`backend/src/routes/wishlist.ts`):
```typescript
import { Router } from 'express';
import { authenticate } from '../middlewares/authenticate';
import * as wishlistController from '../controllers/wishlistController';
const router = Router();
router.post('/', authenticate, wishlistController.addItem);
router.get('/', authenticate, wishlistController.getItems);
export default router;
```
1. **Mount Routes** (`backend/src/server.ts`):
```typescript
import wishlistRoutes from './routes/wishlist';
app.use('/api/wishlist', wishlistRoutes);
```
#### Frontend Steps
1. **Add Types** (`frontend/src/@types/index.ts`):
```typescript
export interface WishlistItem {
id: number;
productId: number;
product: Product;
createdAt: string;
}
```
1. **Create API Client** (`frontend/src/api/wishlist.ts`):
```typescript
import apiClient from './client';
export const wishlistApi = {
async getAll() {
const response = await apiClient.get('/wishlist');
return response.data.data;
},
async add(productId: number) {
const response = await apiClient.post('/wishlist', { productId });
return response.data.data;
},
};
```
1. **Create Hook** (`frontend/src/hooks/useWishlist.ts`):
```typescript
import { useState } from 'react';
import { wishlistApi } from '../api/wishlist';
export function useWishlist() {
const [items, setItems] = useState([]);
const addToWishlist = async (productId: number) => {
await wishlistApi.add(productId);
// Refetch items...
};
return { items, addToWishlist };
}
```
1. **Use in Component** (`frontend/src/components/WishlistButton.tsx`):
```typescript
import { useWishlist } from '../hooks/useWishlist';
export function WishlistButton({ productId }) {
const { addToWishlist } = useWishlist();
return (
<button onClick={() => addToWishlist(productId)}>
Add to Wishlist
</button>
);
}
```
---
## 🔄 Data Flow Example
```
User clicks "Add to Cart" button
Component calls `productApi.addToCart(id)`
API client sends POST /api/cart with JWT token
Backend: authenticate middleware verifies token
Backend: validateCart middleware validates request
Backend: cartController.addItem() receives request
Backend: cartService.addItem() handles business logic
Backend: cartModel (Prisma) saves to database
Backend: returns { success: true, data: cart }
Frontend: receives response, updates UI
User sees success message
```
---
## 🔐 Security Features
### Frontend
- JWT tokens stored in localStorage
- Automatic token injection via axios interceptors
- Protected routes redirect unauthenticated users
- Client-side validation before API calls
### Backend
- JWT authentication on protected endpoints
- Request validation with Zod schemas
- Helmet for security headers
- CORS configured for specific origins
- Password hashing with bcrypt
- SQL injection prevention via Prisma
---
## 📊 Testing Strategy
### Frontend Testing
```bash
# Unit tests for components
npm run test:unit
# Integration tests for hooks
npm run test:integration
# E2E tests
npm run test:e2e
```
### Backend Testing
```bash
# Unit tests for services
npm run test:unit
# Integration tests for routes
npm run test:integration
# API tests
npm run test:api
```
---
## 🚢 Deployment
### Frontend (Vercel/Netlify)
```bash
cd frontend
npm run build
# Deploy dist/ folder
```
### Backend (Railway/Heroku/AWS)
```bash
cd backend
npm run build
npm start
```
---
## 📚 Next Steps
1. **Add Sample Components**: Create Button, Card, Navbar in `frontend/src/components/`
2. **Add Sample Pages**: Create HomePage, ProductPage in `frontend/src/pages/`
3. **Implement Auth**: Complete login/register in backend
4. **Add Products CRUD**: Implement full product management
5. **Add Tests**: Write unit and integration tests
6. **Set Up CI/CD**: GitHub Actions for automated deployment
---
## 💡 Why This Structure Works
**Scalable**: Each part has a clear responsibility
**Maintainable**: Easy to find and update code
**Testable**: Layers can be tested independently
**Team-Friendly**: Multiple developers can work without conflicts
**Production-Ready**: Security, error handling, logging built-in
**Type-Safe**: TypeScript catches bugs before runtime
---
**You now have a professional, production-ready architecture!** 🎉
Start by implementing your first feature following the guide above.