var elm = document.getElementById("snow-monkey-form-122");
if (elm != null) {
  initializeDatepicker();
}

// MutationObserver
var observer;
if (elm != null) {
  observer = new MutationObserver(function (mutations, observer) {
      initializeDatepicker();
  });
  var config = {
    attributes: true,
  };
  observer.observe(elm, config);
}

// datepicker
function initializeDatepicker() {
  $(function () {
    const $target = $(".js-datepicker");
    const dateFormat = 'yy/mm/dd';
    const disableDates = ["2024/01/01","2024/01/02","2024/01/03","2024/01/04","2024/01/10","2024/01/15","2024/01/16","2024/01/23","2024/01/28","2024/01/29","2024/02/06","2024/02/07","2024/02/08","2024/02/09","2024/02/10","2024/02/11","2024/02/12","2024/02/19","2024/02/22","2024/02/28","2024/03/04","2024/03/10","2024/03/11","2024/03/14","2024/03/19","2024/03/26","2024/03/27","2024/03/31","2024/04/01","2024/04/08","2024/04/09","2024/04/15","2024/04/18","2024/04/23","2024/04/24","2024/05/01","2024/05/02","2024/05/03","2024/05/05","2024/05/07","2024/05/15","2024/05/23","2024/05/26","2024/05/27","2024/05/31","2024/06/05","2024/06/10","2024/06/13","2024/06/16","2024/06/17","2024/06/18","2024/06/26","2024/06/28",""];
    const enableDates = [];

    $target.attr("autocomplete", "off");
    $target.attr('readonly', 'readonly');

    $target.datepicker({
      dateFormat: dateFormat,
      firstDay: 1,
      minDate: '+1d',
      maxDate: '+3m',
      beforeShowDay : function(date) {
        const disableDate = $.datepicker.formatDate(dateFormat, date);
        const enableDate = $.datepicker.formatDate(dateFormat, date);
                if (disableDates.indexOf(disableDate) !== -1) {
          if (enableDates.indexOf(enableDate) == -1) {
            return [false, 'ui-state-disabled'];
          }
        }
        if(date.getDay() == 0) {
          return [true, 'class-sunday'];
        }
        if(date.getDay() == 6) {
          return [true, 'class-saturday'];
        }
        return [true, ''];
      },
    });
  });
}