import axios from 'axios';
import Cookies from 'js-cookie';

// Cookie keys
export const ADMIN_TOKEN_KEY = 'admin_token';
export const GALLERY_TOKEN_KEY = 'gallery_token';

// Create axios instance
export const api = axios.create({
  baseURL: import.meta.env.VITE_API_URL || 'http://localhost:3002',
  headers: {
    'Content-Type': 'application/json',
  },
});

// Request interceptor to add auth token
api.interceptors.request.use(
  (config) => {
    // Check if it's an admin route or gallery route
    const isAdminRoute = config.url?.includes('/admin');
    const token = isAdminRoute 
      ? Cookies.get(ADMIN_TOKEN_KEY)
      : Cookies.get(GALLERY_TOKEN_KEY);

    if (token) {
      config.headers.Authorization = `Bearer ${token}`;
    }

    return config;
  },
  (error) => {
    return Promise.reject(error);
  }
);

// Response interceptor to handle errors
api.interceptors.response.use(
  (response) => response,
  (error) => {
    if (error.response?.status === 401) {
      // Clear tokens on unauthorized
      Cookies.remove(ADMIN_TOKEN_KEY);
      Cookies.remove(GALLERY_TOKEN_KEY);
      
      // Redirect to appropriate login
      const isAdminRoute = error.config?.url?.includes('/admin');
      if (isAdminRoute) {
        window.location.href = '/admin/login';
      } else {
        // For gallery routes, redirect to the gallery password page
        const currentPath = window.location.pathname;
        const gallerySlug = currentPath.split('/')[2];
        if (gallerySlug) {
          window.location.href = `/gallery/${gallerySlug}`;
        }
      }
    }

    return Promise.reject(error);
  }
);

// Helper to set auth tokens
export const setAuthToken = (token: string, isAdmin: boolean = false) => {
  const key = isAdmin ? ADMIN_TOKEN_KEY : GALLERY_TOKEN_KEY;
  Cookies.set(key, token, { expires: 1 }); // 1 day expiry
};

// Helper to clear auth tokens
export const clearAuthToken = (isAdmin: boolean = false) => {
  const key = isAdmin ? ADMIN_TOKEN_KEY : GALLERY_TOKEN_KEY;
  Cookies.remove(key);
};

// Helper to get auth tokens
export const getAuthToken = (isAdmin: boolean = false) => {
  const key = isAdmin ? ADMIN_TOKEN_KEY : GALLERY_TOKEN_KEY;
  return Cookies.get(key);
};