import axios from 'axios'

// Create axios instance with base URL from environment variable
const api = axios.create({
  baseURL: import.meta.env.VITE_API_BASE_URL || 'https://dev.servicefinder.hu',
  headers: {
    'Content-Type': 'application/json',
  },
})

// Request interceptor to add auth token
api.interceptors.request.use(
  (config) => {
    console.group('📤 Axios Request Interceptor - Flight Recorder');
    console.log('📊 Request Details:');
    console.log('  • URL:', config.url);
    console.log('  • Method:', config.method);
    console.log('  • Base URL:', config.baseURL);
    
    // Get token from localStorage (check both 'token' and 'access_token' for compatibility)
    if (typeof window !== 'undefined') {
      let token = localStorage.getItem('token');
      if (!token) {
        token = localStorage.getItem('access_token');
        if (token) {
          console.log('⚠️ Using access_token (legacy) instead of token');
        }
      }
      
      if (token) {
        console.log('🔐 Adding Authorization header with token');
        console.log('  • Token present:', token.substring(0, 20) + '...');
        config.headers.Authorization = `Bearer ${token}`;
      } else {
        console.log('⚠️ No auth token found in localStorage');
        console.log('  • token key:', localStorage.getItem('token') ? 'PRESENT' : 'MISSING');
        console.log('  • access_token key:', localStorage.getItem('access_token') ? 'PRESENT' : 'MISSING');
      }
    } else {
      console.log('🌐 Window not available (SSR)');
    }
    
    console.groupEnd();
    return config;
  },
  (error) => {
    console.error('❌ Request interceptor error:', error);
    return Promise.reject(error);
  }
)

// Response interceptor for error handling
api.interceptors.response.use(
  (response) => response,
  (error) => {
    console.group('🚨 Axios Response Interceptor - Flight Recorder');
    console.log('📊 Interceptor triggered for error:', error);
    
    if (error.response) {
      console.log('📡 Response Details:');
      console.log('  • Status:', error.response.status);
      console.log('  • URL:', error.config?.url);
      console.log('  • Method:', error.config?.method);
      console.log('  • Headers:', error.config?.headers);
      
      if (error.response.status === 401) {
        console.warn('🔐 401 UNAUTHORIZED DETECTED!');
        console.warn('   ↳ This will trigger logout and redirect');
        
        // Log current auth state before clearing
        const token = localStorage.getItem('token');
        const accessToken = localStorage.getItem('access_token');
        console.log('   ↳ Current localStorage state:');
        console.log('     - token:', token ? `YES (${token.substring(0, 20)}...)` : 'NO');
        console.log('     - access_token:', accessToken ? `YES (${accessToken.substring(0, 20)}...)` : 'NO');
        
        // Handle unauthorized - clear ALL auth tokens and redirect to login
        if (typeof window !== 'undefined') {
          console.log('   ↳ Clearing auth tokens from localStorage...');
          localStorage.removeItem('token');
          localStorage.removeItem('access_token');
          localStorage.removeItem('refresh_token');
          localStorage.removeItem('is_admin');
          localStorage.removeItem('user_email');
          localStorage.removeItem('user_role');
          
          // Also try to call auth store logout if available
          try {
            const authStore = window.__pinia?.state.value?.auth;
            if (authStore && authStore.logout) {
              console.log('   ↳ Calling auth store logout()...');
              // We can't call the function directly from here, but we can dispatch an event
              window.dispatchEvent(new CustomEvent('force-logout'));
            }
          } catch (e) {
            console.warn('   ↳ Could not access auth store:', e.message);
          }
          
          console.warn('   ↳ Redirecting to /login');
          window.location.href = '/login';
        }
      } else if (error.response.status === 403) {
        console.warn('🔒 403 FORBIDDEN DETECTED');
        console.warn('   ↳ User lacks permissions for this resource');
      } else if (error.response.status === 404) {
        console.warn('🔍 404 NOT FOUND DETECTED');
        console.warn('   ↳ API endpoint or resource not found');
      } else if (error.response.status >= 500) {
        console.error('💥 SERVER ERROR DETECTED (5xx)');
        console.error('   ↳ Backend server issue');
      }
    } else if (error.request) {
      console.error('🌐 NETWORK ERROR: Request was made but no response received');
      console.error('   ↳ Possible network issue or CORS problem');
    } else {
      console.error('⚙️ SETUP ERROR: Error in request configuration');
      console.error('   ↳', error.message);
    }
    
    console.groupEnd();
    return Promise.reject(error);
  }
)

export default api

// Catalog API functions
export const catalogApi = {
  async getMakes() {
    const response = await api.get('/catalog/makes')
    return response.data
  },
  async getModels(make) {
    const response = await api.get('/catalog/models', { params: { make } })
    return response.data
  },
  async getGenerations(make, model) {
    const response = await api.get('/catalog/generations', { params: { make, model } })
    return response.data
  },
  async getEngines(make, model, gen) {
    const response = await api.get('/catalog/engines', { params: { make, model, gen } })
    return response.data
  }
}