iotDashboard/frontend/src/lib/api-client.ts

import axios from 'axios';

// Use Vite proxy in development, or env variable in production
const API_BASE_URL = import.meta.env.VITE_API_URL || '/api';

export const apiClient = axios.create({
  baseURL: API_BASE_URL,
  headers: {
    'Content-Type': 'application/json',
  },
  withCredentials: true, // For session auth
});

// Add request interceptor for JWT token (if using JWT)
apiClient.interceptors.request.use((config) => {
  const token = localStorage.getItem('access_token');
  if (token) {
    config.headers.Authorization = `Bearer ${token}`;
  }
  return config;
});

// Add response interceptor for error handling
apiClient.interceptors.response.use(
  (response) => response,
  (error) => {
    if (error.response?.status === 401) {
      // Handle unauthorized - redirect to login
      localStorage.removeItem('access_token');
      // window.location.href = '/login';
    }
    return Promise.reject(error);
  }
);

export default apiClient;