/* ANAX call-fab — 800 MYANAX floating pill
 *
 * Behavior:
 *   Mobile / touch (≤1100 OR coarse pointer) → tel:800692629 (phone dialer)
 *   Desktop (≥1101 + hover + fine pointer)   → /help/contact.html (page load)
 *
 * Path resolution:
 *   Anchors on this script's own src — which the browser resolves to
 *   <siteRoot>/assets/js/call-fab.js regardless of page depth or protocol.
 *   Stripping the suffix gives a reliable siteRoot for any caller.
 */
(function () {
  var fab = document.querySelector('.call-fab');
  if (!fab) return;

  // ---- 1. Find this <script> element to derive siteRoot ----
  var thisScript = document.currentScript;
  if (!thisScript) {
    // Fallback for browsers that null currentScript inside deferred IIFE
    var all = document.getElementsByTagName('script');
    for (var i = all.length - 1; i >= 0; i--) {
      if (all[i].src && /\/assets\/js\/call-fab\.js(\?.*)?$/.test(all[i].src)) {
        thisScript = all[i];
        break;
      }
    }
  }

  // ---- 2. Compute siteRoot URL ----
  var siteRoot = '';
  if (thisScript && thisScript.src) {
    siteRoot = thisScript.src.replace(/assets\/js\/call-fab\.js(\?.*)?$/, '');
  } else {
    // Last-resort fallback: relative depth from pathname
    var segs = window.location.pathname.split('/').filter(Boolean);
    if (segs.length && segs[segs.length - 1].indexOf('.') !== -1) segs.pop();
    for (var k = 0; k < segs.length; k++) siteRoot += '../';
  }

  var contactURL = siteRoot + 'help/contact.html';
  var telHref = 'tel:800692629';

  // ---- 3. Device detection ----
  function isDesktop() {
    return window.matchMedia('(min-width: 1101px)').matches &&
           window.matchMedia('(hover: hover)').matches &&
           window.matchMedia('(pointer: fine)').matches;
  }

  // ---- 4. Apply correct href on load ----
  function applyHref() {
    if (isDesktop()) {
      fab.setAttribute('href', contactURL);
      fab.setAttribute('aria-label', 'Contact us — 800 MYANAX');
      fab.setAttribute('data-mode', 'desktop');
    } else {
      fab.setAttribute('href', telHref);
      fab.setAttribute('aria-label', 'Call 800 MYANAX');
      fab.setAttribute('data-mode', 'mobile');
    }
  }
  applyHref();

  // ---- 5. Re-evaluate on resize (laptop dock/undock, tablet rotate) ----
  var resizeTimer = null;
  window.addEventListener('resize', function () {
    clearTimeout(resizeTimer);
    resizeTimer = setTimeout(applyHref, 150);
  });

  // ---- 6. Click handler — guarantees desktop navigates to contact page ----
  fab.addEventListener('click', function (e) {
    if (isDesktop()) {
      e.preventDefault();
      e.stopPropagation();
      window.location.href = contactURL;
      return false;
    }
    // Mobile/touch: do nothing — browser handles tel: href natively
  });
})();