(function() {
  'use strict';
  
  console.log('🔧 DataLayer universel chargé');
  
  if (window.location.href.includes('confirmation')) {
    console.log('⏭️ Page de confirmation - script ignoré');
    return;
  }

  let isProcessing = false;
  let lastSubmitTime = 0;
  const DEBOUNCE_DELAY = 1000;

  async function sha256(value) {
    if (!value) return '';
    try {
      const encoder = new TextEncoder();
      const data = encoder.encode(value.trim().toLowerCase());
      const hashBuffer = await crypto.subtle.digest('SHA-256', data);
      const hashArray = Array.from(new Uint8Array(hashBuffer));
      return hashArray.map(b => b.toString(16).padStart(2, '0')).join('');
    } catch (error) {
      console.error('❌ Erreur hashage:', error);
      return '';
    }
  }

  function getSelectText(selectId) {
    const select = document.getElementById(selectId);
    if (select && select.selectedIndex >= 0 && select.options[select.selectedIndex]) {
      return select.options[select.selectedIndex].text;
    }
    return '';
  }

  async function captureAndPushDataLayer() {
    const now = Date.now();
    if (isProcessing || (now - lastSubmitTime) < DEBOUNCE_DELAY) {
      console.warn('⚠️ Envoi ignoré (protection anti-doublon)');
      return;
    }
    
    isProcessing = true;
    lastSubmitTime = now;
    
    console.log('📝 Capture des données formulaire');
    
    const consentCheckbox = document.querySelector('input[name="cnil"]:checked');
    if (!consentCheckbox || consentCheckbox.value !== "1") {
      console.warn('⚠️ Pas de consentement CNIL - dataLayer non envoyé');
      isProcessing = false;
      return;
    }

    const typeRaw = (document.querySelector('input[name="type_formulaire"]') || {}).value || '';
    const emailRaw = (document.getElementById('email') || {}).value || '';
    const portableRaw = (document.getElementById('portable') || {}).value || '';
    const villeRaw = (document.getElementById('ville') || {}).value || '';
    const codePostalRaw = (document.getElementById('codepostal') || document.getElementById('code_postal') || {}).value || '';
    const campusRaw = (document.getElementById('campus_selection') || {}).value || '';
    
    const statusRaw = getSelectText('OscarContactJeSuisRefIdField');
    const formationRaw = getSelectText('formation');
    
    const paysSelect = document.getElementById('pays');
    let paysNom = '';
    if (paysSelect && paysSelect.selectedIndex > 0) {
      paysNom = paysSelect.options[paysSelect.selectedIndex].text;
    }

    console.log('📦 Données:', {
      type: typeRaw,
      status: statusRaw,
      campus: campusRaw,
      formation: formationRaw,
      hasEmail: !!emailRaw,
      hasPhone: !!portableRaw
    });

    const emailHash = await sha256(emailRaw);
    const portableHash = await sha256(portableRaw);
    const codePostalHash = await sha256(codePostalRaw);

    const dataLayerObject = {
      event: 'form_submit',
      type: typeRaw.trim().toLowerCase(),
      je_suis: statusRaw.trim(),
      sha256_email_address: emailHash,
      sha256_phone_number: portableHash,
      sha256_postal_code: codePostalHash,
      ville: villeRaw.trim(),
      pays: paysNom,
      campus: campusRaw.trim(),
      formation: formationRaw.trim()
    };

    window.dataLayer = window.dataLayer || [];
    window.dataLayer.push(dataLayerObject);
    
    console.log('🚀 DataLayer push réussi:', dataLayerObject);
    
    setTimeout(() => {
      isProcessing = false;
    }, 500);
  }

  // ✅ INTERCEPTER AXIOS.POST
  function interceptAxios() {
    if (!window.axios) {
      console.warn('⚠️ Axios pas encore chargé, nouvelle tentative...');
      setTimeout(interceptAxios, 100);
      return;
    }

    console.log('✅ Interception axios configurée');

    const originalPost = axios.post;
    axios.post = async function(...args) {
      const url = args[0];
      
      // Vérifier si c'est un envoi de formulaire Oscar
      if (url && url.includes('oscar-campus.com')) {
        console.log('📝 Event: axios.post intercepté');
        await captureAndPushDataLayer();
      }
      
      // Appeler la fonction originale
      return originalPost.apply(this, args);
    };
  }

  // ✅ Pour CANDIDATURE : mousedown (car Vue bloque tout)
  function attachCandidatureListeners() {
    const form = document.getElementById('oscar_school_form');
    if (!form) return;

    const typeInput = document.querySelector('input[name="type_formulaire"]');
    const formType = typeInput ? typeInput.value : '';
    
    if (formType === 'candidature') {
      console.log('🎯 Mode candidature: ajout mousedown');
      const allSubmitButtons = form.querySelectorAll('button[type="submit"]');
      allSubmitButtons.forEach(btn => {
        btn.addEventListener('mousedown', async function(e) {
          console.log('📝 Event: mousedown (candidature)');
          await captureAndPushDataLayer();
        }, { capture: true });
      });
    }
  }

  // Démarrage
  function init() {
    console.log('🚀 Initialisation tracking DataLayer');
    
    // Intercepter axios (pour JPO, Brochure, Contact)
    interceptAxios();
    
    // Attacher listeners spécifiques candidature
    if (document.readyState === 'loading') {
      document.addEventListener('DOMContentLoaded', attachCandidatureListeners);
    } else {
      attachCandidatureListeners();
    }
  }

  init();
})();