import axios from 'axios';

function getCookie(name: string): string | null {
    let cookieValue = null;
    if (document.cookie && document.cookie !== '') {
        const cookies = document.cookie.split(';');
        for (let i = 0; i < cookies.length; i++) {
            const cookie = cookies[i].trim();
            // Does this cookie string begin with the name we want?
            if (cookie.substring(0, name.length + 1) === (name + '=')) {
                cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                break;
            }
        }
    }
    return cookieValue;
}

const api = axios.create({
  baseURL: import.meta.env.VITE_API_URL || 'http://localhost:8000/api/',
});

api.interceptors.request.use((config) => {
  // Set DRF Auth Token if available from localStorage
  const token = localStorage.getItem('token');
  if (token) {
    config.headers.Authorization = `Token ${token}`;
  }

  // Set CSRF token for state-changing methods
  const csrfToken = getCookie('csrftoken');
  const method = config.method?.toUpperCase();
  if (csrfToken && method && ['POST', 'PUT', 'PATCH', 'DELETE'].includes(method)) {
      if (config.headers) {
          config.headers['X-CSRFToken'] = csrfToken;
      }
  }

  return config;
});

export default api;