source: frontend/src/services/api.js

import axios from 'axios';

const API_URL = process.env.REACT_APP_API_URL || 'http://localhost:8080/api';

const apiClient = axios.create({
  baseURL: API_URL,
  headers: {
    'Content-Type': 'application/json',
  },
});

// Request interceptor to add JWT token
apiClient.interceptors.request.use(
  config => {
    const token = localStorage.getItem('token');
    if (token) {
      config.headers.Authorization = `Bearer ${token}`;
      console.log('✅ Token added to request:', config.url);
    } else {
      console.warn('⚠️ No token found for request:', config.url);
    }
    return config;
  },
  error => Promise.reject(error)
);

// Error handling interceptor
apiClient.interceptors.response.use(
  response => response,
  error => {
    console.error('API Error:', error.response?.data || error.message);
    return Promise.reject(error);
  }
);

export default apiClient;