export function setupAnalytics() {
  try {
    const base = import.meta.env.VITE_MATOMO_BASE_URL as string | undefined;
    const siteId = import.meta.env.VITE_MATOMO_SITE_ID as string | undefined;

    if (base && siteId && siteId !== '__SETZ_MICH__') {
      const queue = ((window as any)._paq = (window as any)._paq || []);
      queue.push(['setTrackerUrl', base + 'matomo.php']);
      queue.push(['setSiteId', siteId]);
      queue.push(['enableLinkTracking']);

      if (!document.querySelector('script[data-matomo="dateweb"]')) {
        const g = document.createElement('script');
        g.async = true;
        g.dataset.matomo = 'dateweb';
        g.src = base + 'matomo.js';
        document.head.appendChild(g);
      }
    }

    const ads = import.meta.env.VITE_ADSENSE as string | undefined;
    if (ads && /^https?:\/\//.test(ads) && !document.querySelector('script[data-adsense-src]')) {
      const script = document.createElement('script');
      script.async = true;
      script.src = ads;
      script.dataset.adsenseSrc = ads;
      document.head.appendChild(script);
    }
  } catch {
    // analytics must not block page flow
  }
}