function calculateTotal(items) {
  var total = 0;

  for (var i = 0; i < items.length; i++) {
    total = total + items[i].price;
  }

  if (total > 100) {
    var discount = total * 0.1;
    total = total - discount;
  }

  // TODO: handle tax calculation
  // TODO: handle currency conversion

  return total;
}