bamort/frontend/src/utils/api.js

import axios from 'axios'
import { getAPIBaseURL } from './config'

// Create API instance without baseURL - will be set dynamically
const API = axios.create({})

let baseURLPromise = null
let baseURLResolved = false

// Get base URL (cached after first call)
async function ensureBaseURL() {
  if (baseURLResolved) {
    return
  }
  
  if (!baseURLPromise) {
    baseURLPromise = getAPIBaseURL()
  }
  
  const baseURL = await baseURLPromise
  API.defaults.baseURL = baseURL
  baseURLResolved = true
}

// Request interceptor to add auth token and ensure baseURL is set
API.interceptors.request.use(
  async (config) => {
    // Ensure baseURL is set before request
    await ensureBaseURL()
    
    const token = localStorage.getItem('token')
    if (token) {
      config.headers.Authorization = `Bearer ${token}`
    }
    return config
  },
  (error) => {
    return Promise.reject(error)
  }
)

// Response interceptor to handle 401 errors
API.interceptors.response.use(
  (response) => {
    return response
  },
  (error) => {
    if (error.response && error.response.status === 401) {
      // Token is invalid or expired
      console.warn('Authentication failed - token may be expired')
      localStorage.removeItem('token')
      // You might want to redirect to login here
      // window.location.href = '/login'
    }
    return Promise.reject(error)
  }
)

export default API