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Integrating Axios for API Calls in DigiMart

I'll implement a comprehensive API integration using Axios for the DigiMart frontend. This will replace the mock data with real API calls while maintaining proper error handling and user feedback.

I've implemented a comprehensive API integration for the DigiMart frontend using Axios. Here's what I've done:

Key Features Implemented

1. API Service Layer

   • Created a centralized Axios configuration with interceptors for authentication
   • Implemented service modules for each API endpoint category (auth, products, categories, cart, orders)
   • Added proper error handling and token management

2. Loading States & Error Handling

   • Added loading indicators for all API calls
   • Implemented error messages with retry functionality
   • Created fallback mechanisms when API calls fail

3. User Authentication

   • Updated the UserContext to use the API for login and user data
   • Added token management in local storage
   • Implemented proper error handling for authentication failures

4. Data Fetching

   • Updated HomePage to fetch featured products, new arrivals, and best sellers
   • Implemented product detail fetching in ProductPage
   • Added category and product fetching in CategoryPage
   • Updated OrdersPage to fetch orders from the API

5. Cart Management

   • Updated CartContext to use the API for cart operations
   • Implemented fallback to local storage when offline

How to Test

1. The application will automatically connect to the API at http://localhost:5000/api

2. You can log in using the credentials:

   • Email: admin@digimart.com
   • Password: Password123!
3. Browse products, add them to cart, and place orders to test the integration

Error Handling

• All API calls include proper error handling
• User-friendly error messages are displayed when API calls fail
• Retry functionality is available for failed requests
• Fallback to local data when API is unavailable

Loading States

• Loading spinners are shown during API calls
• Skeleton loaders for content that's being fetched
• Proper disabled states for buttons during loading

The implementation follows best practices for frontend development, including separation of concerns, proper error handling, and a good user experience during loading states.