Country listener (CZ/SK)

Country listener

<script>
(function(){
  var SELECT_ID = 'ShipmentCountrySelect';
  var KEY = 'inweek_country'; // localStorage key
  var PUSHED_ONCE = false;

  function push(c){
    if (!c || PUSHED_ONCE) return;
    window.dataLayer = window.dataLayer || [];
    dataLayer.push({event:'country_change', country: c});
    PUSHED_ONCE = true;
  }

  function save(c){
    try { localStorage.setItem(KEY, c); } catch(e){}
  }

  function readSaved(){
    try { return (localStorage.getItem(KEY) || '').toLowerCase(); } catch(e){ return ''; }
  }

  function readFromSelect(){
    var el = document.getElementById(SELECT_ID);
    if (!el) return '';
    var val = (el.value || '').toLowerCase();
    if (val === 'cz' || val === 'sk') return val;

    var opt = el.options && el.options[el.selectedIndex];
    var txt = (opt && opt.text || '').toLowerCase();
    if (/[čc]esk/.test(txt)) return 'cz';
    if (/slovensk/.test(txt)) return 'sk';
    return '';
  }

  // 1) zkus select
  var c1 = readFromSelect();
  if (c1){ save(c1); push(c1); }

  // 2) když select není, použij uloženou hodnotu (funguje i na thank-you)
  if (!c1){
    var c2 = readSaved();
    if (c2 === 'cz' || c2 === 'sk') push(c2);
  }

  // 3) sleduj změny selectu a ukládej
  document.addEventListener('change', function(e){
    if (e.target && e.target.id === SELECT_ID){
      var c = readFromSelect();
      if (c){ save(c); push(c); }
    }
  });

  // 4) kdyby select dorazil později (SPA / lazy load)
  new MutationObserver(function(){
    var c = readFromSelect();
    if (c){ save(c); push(c); }
  }).observe(document.documentElement, {childList:true, subtree:true});
})();
</script>