GA4 EC - purchase - Terme Jezerčica

function prettyText(x){
  return x.replaceAll('+', ' ')
  .replaceAll('%2C', ',')
  .replaceAll('%C5%A0', '\u0160') //Š
  .replaceAll('%C5%A1', '\u0161') //š
  .replaceAll('%C4%8D', '\u010D') //č
  .replaceAll('%C4%8C', '\u010C') //Č
  .replaceAll('%C4%87', '\u0107') //ć
  .replaceAll('%C4%86', '\u0106') //Ć
  .replaceAll('%C7%84', '\u01C4') //DŽ
  .replaceAll('%C7%86', '\u01C6') //dž
  .replaceAll('%C4%91', '\u0111') //đ
  .replaceAll('%C4%90', '\u0110') //Đ
  .replaceAll('%C5%BE', '\u017E') //ž
  .replaceAll('%C5%BD', '\u017D');//Ž
}

function extractPrice(x){
  var pattern = '(\"total\"):((\d*\.?\d*)+)';
  const found = x.match(pattern);
  var newNumber = found[2];
  var p = newNumber.match(/[\d\.]+/);

  return p[0];
}


window.dataLayer = window.dataLayer || [];
window.dataLayer.push({
  event: 'purchase',            // name of the event. In this case, it always must be purchase
  ecommerce: {
    currency: '{CURRENCY}',
    value: '{TOTAL}',                       // order total (price of total reservations
    transaction_id: '{RESV}',           // transaction id
    coupon: '{PROMOCODE}',          // if coupon was applied to the reservation, include it here
    items: [{                           // an array with all accommodation units
      item_name: prettyText('{ROOMNAME}'),           // insert an actual accommodation unit name
      item_id: '{ROOMID}',              // insert an actual accommodation ID
      price: extractPrice('{MULTIROOM}'),                 // insert an actual product price. Number or a string. Don't include currency code
      item_category: prettyText('{HOTELNAME}'),         // insert an actual accommodation unit's top-level category
      item_category2: prettyText('{RATENAME}'),        // insert rate category
      quantity: '1',                    // product quantity, hardcoded value
      arrival_date: '{CHECKIN}',        // insert check-in date
      departure_date: '{CHECKOUT}',     // insert check-out date
      booked_nights: '{NIGHTS}',        // insert total number of nights
      number_of_adults: '{ADULTS}',     // insert total number of adults
      number_of_children: '{CHD}',      // insert total number of children
    }]
  }
});