const GA4_ID = 'G-RLE87DDCYT';

(function () {
  // 📦 Inietta HTML del banner
  const bannerHtml = `
    <div id="cookie-banner">
      <div class="cookie-text">
        Questo sito utilizza cookie analitici anonimi. Vuoi accettarli?
      </div>
      <div class="cookie-buttons">
        <button id="acceptCookies" class="cookie-btn cookie-btn-1">Accetta</button>
        <button id="declineCookies" class="cookie-btn cookie-btn-2">Rifiuta</button>
      </div>
    </div>
  `;

  document.addEventListener('DOMContentLoaded', function () {
    const existingConsent = localStorage.getItem('cookie_consent');

    if (existingConsent === 'granted') {
      loadAnalytics();
    } else if (existingConsent === 'denied') {
      return;
    } else {
      // Aggiungi CSS esterno
      const cssLink = document.createElement('link');
      cssLink.rel = 'stylesheet';
      cssLink.href = 'ga-consent.css';
      document.head.appendChild(cssLink);

      // Inietta HTML del banner
      document.body.insertAdjacentHTML('beforeend', bannerHtml);

      // Gestione eventi
      document.getElementById('acceptCookies').addEventListener('click', function () {
        localStorage.setItem('cookie_consent', 'granted');
        document.getElementById('cookie-banner').style.display = 'none';
        loadAnalytics();
      });

      document.getElementById('declineCookies').addEventListener('click', function () {
        localStorage.setItem('cookie_consent', 'denied');
        document.getElementById('cookie-banner').style.display = 'none';
      });
    }
  });

  // 📈 Carica Google Analytics solo dopo consenso
  function loadAnalytics() {
    const script = document.createElement('script');
    script.src = `https://www.googletagmanager.com/gtag/js?id=${GA4_ID}`;
    script.async = true;
    document.head.appendChild(script);

    window.dataLayer = window.dataLayer || [];
    function gtag() {
      dataLayer.push(arguments);
    }
    window.gtag = gtag;

    gtag('consent', 'default', {
      ad_storage: 'denied',
      analytics_storage: 'granted',
    });

    gtag('js', new Date());
    gtag('config', GA4_ID, {
      anonymize_ip: true,
      allow_ad_personalization_signals: false,
    });
  }
})();