Skip to content

API_INTEGRATION_SUMMARY.md

Latest commit

 

History

History
287 lines (230 loc) · 7.63 KB

API_INTEGRATION_SUMMARY.md

File metadata and controls

287 lines (230 loc) · 7.63 KB

API Integration Summary - Frontend to Backend Connection

Overview

Đã hoàn thiện kết nối Frontend React với Backend Spring Boot, thay thế toàn bộ mock data bằng API thật từ database.

🔧 Backend Changes

1. ProductVariantController.java - Enhanced

  • ✅ Thêm query parameters: search và barcode
  • ✅ Endpoint: GET /api/pos/product?search=coca&barcode=123456

2. ProductVariantService.java - Enhanced

  • ✅ Thêm logic tìm kiếm sản phẩm theo tên, SKU, barcode
  • ✅ Tích hợp với InventoryStock để lấy số lượng tồn kho
  • ✅ Lấy thông tin Category và Brand

3. ProductVariantResponse.java - Enhanced

- Integer id
- String name
- String sku
- String barcode
- BigDecimal sellPrice
- Integer stockQuantity
- String categoryName
- String brandName

4. CustomerController.java - Enhanced

  • ✅ Thêm query parameter: phone
  • ✅ Cho phép CASHIER role truy cập
  • ✅ Endpoint: GET /api/crm/customers?phone=0912345678

5. CustomerService.java - Enhanced

  • ✅ Thêm logic tìm kiếm khách hàng theo số điện thoại

6. InventoryStockRepository.java - Enhanced

  • ✅ Thêm method: findByProductVariantId(Integer productVariantId)

🎨 Frontend Changes

1. posService.js - NEW FILE

// Services for POS operations
- getAllProducts()
- searchProducts(searchTerm)
- getProductByBarcode(barcode)

2. customerService.js - NEW FILE

// Services for customer operations
- getAllCustomers()
- searchByPhone(phone)

3. pos.jsx - Major Update

  • ✅ Xóa mock data
  • ✅ Fetch products từ backend khi component mount
  • ✅ Transform data từ backend sang format frontend
  • ✅ Tích hợp QR Scanner với API
  • ✅ Thêm loading state

Key Changes:

// Before: Mock data
const mockProducts = [...]

// After: Real API
useEffect(() => {
  loadProducts();
}, []);

const loadProducts = async () => {
  const data = await posService.getAllProducts();
  setProducts(transformedData);
};

4. Cart.jsx - Enhanced

  • ✅ Tích hợp customerService
  • ✅ Tìm kiếm khách hàng thật từ database
  • ✅ Xử lý khách hàng mới vs khách hàng cũ
  • ✅ Thêm loading state khi search

📡 API Endpoints Summary

POS Endpoints

Method Endpoint Description Auth
GET /api/pos/product Lấy tất cả sản phẩm ADMIN, MANAGER, CASHIER
GET /api/pos/product?search=coca Tìm sản phẩm theo tên/SKU ADMIN, MANAGER, CASHIER
GET /api/pos/product?barcode=123456 Tìm sản phẩm theo barcode ADMIN, MANAGER, CASHIER

Customer Endpoints

Method Endpoint Description Auth
GET /api/crm/customers Lấy tất cả khách hàng ADMIN, MANAGER, CASHIER
GET /api/crm/customers?phone=0912 Tìm khách hàng theo SĐT ADMIN, MANAGER, CASHIER

Auth Endpoints (Already existed)

Method Endpoint Description
POST /api/auth/login Đăng nhập
POST /api/auth/logout Đăng xuất
GET /api/auth/validate Validate token
GET /api/auth/me Lấy thông tin user hiện tại

🔄 Data Flow

1. Product Loading Flow

Frontend (pos.jsx)
  → posService.getAllProducts()
  → axios GET /api/pos/product
  → ProductVariantController
  → ProductVariantService
  → ProductVariantRepository + InventoryStockRepository
  → Database (product_variants, products, inventory_stocks)
  → Response: List<ProductVariantResponse>
  → Frontend transforms & displays

2. Customer Search Flow

Frontend (Cart.jsx)
  → customerService.searchByPhone(phone)
  → axios GET /api/crm/customers?phone=xxx
  → CustomerController
  → CustomerService
  → CustomerRepository
  → Database (customers)
  → Response: List<CustomerResponse>
  → Frontend displays customer info

3. QR Scanner Flow

Frontend (QRScanner)
  → Scan barcode
  → posService.getProductByBarcode(barcode)
  → axios GET /api/pos/product?barcode=xxx
  → Backend filters by barcode
  → Response: Product data
  → Add to cart

✅ Testing Checklist

Backend Testing

Frontend Testing

  • Start frontend: cd frontend && npm run dev
  • Login with valid credentials
  • Check if products load from database
  • Test search functionality
  • Test customer phone search
  • Test QR scanner with barcode
  • Test add to cart
  • Test checkout flow

🚀 How to Run

1. Start Backend

cd backend
.\mvnw spring-boot:run

Backend runs at: http://localhost:8081

2. Start Frontend

cd frontend
npm install  # First time only
npm run dev

Frontend runs at: http://localhost:5173

3. Login

🔐 Authentication Flow

  1. User logs in → POST /api/auth/login
  2. Backend returns JWT token
  3. Frontend stores token in localStorage
  4. All subsequent API calls include: Authorization: Bearer {token}
  5. Backend validates token via JwtAuthenticationFilter
  6. If token invalid/expired → 401 → Redirect to login

📝 Notes

Important Points

  1. CORS: Backend đã config cho phép localhost:5173, 5174, 3000
  2. JWT Token: Tự động thêm vào header bởi axios interceptor
  3. Error Handling: 401 errors tự động redirect về login
  4. Data Transform: Backend trả BigDecimal, frontend convert sang Number
  5. Stock Quantity: Tính tổng từ tất cả locations trong inventory_stocks

Known Limitations

  1. Chưa có API tạo đơn hàng (SalesOrder) - cần implement
  2. Chưa có API cập nhật điểm khách hàng - cần implement
  3. Chưa có API trừ tồn kho khi bán - cần implement
  4. Payment processing vẫn dùng localStorage - cần API

Next Steps

  1. Implement SalesOrder API (POST /api/pos/orders)
  2. Implement inventory deduction on sale
  3. Implement loyalty points update
  4. Add transaction history API
  5. Add real-time stock validation

🐛 Troubleshooting

Problem: Products not loading

Solution:

  • Check backend is running on port 8081
  • Check JWT token is valid
  • Check database has product data
  • Check browser console for errors

Problem: 401 Unauthorized

Solution:

  • Login again to get fresh token
  • Check token in localStorage
  • Check backend JWT secret matches

Problem: CORS errors

Solution:

  • Check backend CORS config includes your frontend URL
  • Clear browser cache
  • Restart backend

Problem: Empty product list

Solution:

  • Check database has data in product_variants table
  • Run migration scripts if needed
  • Check backend logs for SQL errors

📚 Related Files

Backend

  • controller/pos/ProductVariantController.java
  • service/ProductVariantService.java
  • dto/pos/ProductVariantResponse.java
  • controller/CustomerController.java
  • service/CustomerService.java
  • repository/InventoryStockRepository.java

Frontend

  • services/posService.js
  • services/customerService.js
  • pages/Pos/pos.jsx
  • pages/Pos/Cart.jsx
  • config/axiosConfig.js

Status: ✅ COMPLETED - Frontend now fully connected to Backend API Date: 2025-01-29 Version: 1.0