(function () {

  var MAIL_FIELD_IDS = [
    1499729, 1499899, 1499900, 1499901, 1499902, 1499903,
    1499904, 1499905, 1499906, 1499907, 1499908, 1499909,
    1499910, 1499911, 1499912, 1499913, 1499914, 1499915,
    1499916, 1499917, 1499918, 1499919, 1499920, 1499921,
    1499922, 1499923, 1499924, 1499925, 10074028, 1794780,
    1794801, 1794849, 1852427, 10001933
  ];

  function initForm($block) {

    if ($block.data('delivery-init')) return;
    $block.data('delivery-init', true);


    var $form = $block.is('form') ? $block : $block.find('form').first();
    if (!$form.length) return;


    var $fileBlock = null;
    for (var i = 0; i < MAIL_FIELD_IDS.length; i++) {
      var $el = $block.find('#field-input-' + MAIL_FIELD_IDS[i]);
      if ($el.length) {
        $fileBlock = $el.closest('.builder-item');
        break;
      }
    }
    if (!$fileBlock || !$fileBlock.length) return;


    var $btn = $form.find('button[type="submit"]').first();
    if (!$btn.length) return;

    var btnId = $btn.attr('id'); // например "button1761878"


    var $choiceBlock = $block.find('.delivery-choice-block').first();
    var $error;

    if ($choiceBlock.length) {
      $choiceBlock.show();
      $error = $choiceBlock.find('.delivery-error');
    } else {
      $choiceBlock = $(
        '<div class="delivery-choice-block" style="margin:16px 0;text-align:center;">' +
          '<p style="font-weight:bold;margin-bottom:10px;">Как получить удостоверение?</p>' +
          '<label style="margin-right:20px;cursor:pointer;">' +
            '<input type="radio" name="delivery_choice" value="self" style="margin-right:6px;">Заберу в Москве' +
          '</label>' +
          '<label style="cursor:pointer;">' +
            '<input type="radio" name="delivery_choice" value="post" style="margin-right:6px;">Пришлите почтой' +
          '</label>' +
          '<div class="delivery-error" style="display:none;margin-top:10px;padding:10px 16px;' +
            'background:#fff3f3;border:1px solid #f5a0a0;border-radius:6px;' +
            'color:#c0392b;font-size:14px;"></div>' +
        '</div>'
      );
      $fileBlock.before($choiceBlock);
      $error = $choiceBlock.find('.delivery-error');
    }


    $fileBlock.hide();
    disableFileField();

    function disableFileField() {
      $fileBlock.find('input[id^="field-input-"]').attr('disabled', 'disabled');
      $fileBlock.find('.custom-field-value').attr('disabled', 'disabled');
      $fileBlock.find('.required-sign').hide();
    }

    function enableFileField() {
      $fileBlock.find('input[id^="field-input-"]').removeAttr('disabled');
      $fileBlock.find('.custom-field-value').removeAttr('disabled');
      $fileBlock.find('.required-sign').show();
    }

    function showError(msg) {
      $error.text(msg).fadeIn(200);
      $('html, body').animate({ scrollTop: $choiceBlock.offset().top - 100 }, 300);
    }
    function hideError() { $error.fadeOut(150); }

    function unlockButton() {
      if (btnId) window['prs' + btnId] = false;
      $btn.prop('disabled', false).removeAttr('disabled').removeClass('disabled');
      $form.removeClass('lt-form-loading lt-form-disabled lt-form-sending');
      $btn.find('.fa-spinner, .glyphicon-refresh').remove();
    }


    $choiceBlock.on('change', 'input[name="delivery_choice"]', function () {
      hideError();
      if ($(this).val() === 'post') {
        enableFileField();
        $fileBlock.show();
      } else {
        disableFileField();
        $fileBlock.hide();
      }
    });

 
    function validate() {
      var choice = $choiceBlock.find('input[name="delivery_choice"]:checked').val();

      if (!choice) {
        showError('Пожалуйста, выберите способ получения удостоверения.');
        return false;
      }

      if (choice === 'post') {
        var fileVal = $fileBlock.find('.custom-field-value').val();
        var isEmpty = !fileVal || fileVal === '""' || fileVal === '' || fileVal === 'null';
        if (isEmpty) {
          $fileBlock.find('.custom-field-input').css('outline', '2px solid #e53935');
          showError('Пожалуйста, загрузите заявление для отправки удостоверения почтой.');
          $('html, body').animate({ scrollTop: $fileBlock.offset().top - 100 }, 300);
          return false;
        }
        $fileBlock.find('.custom-field-input').css('outline', '');
      }

      hideError();
      return true;
    }

    $fileBlock.on('change', 'input[id^="field-input-"]', function () {
      $fileBlock.find('.custom-field-input').css('outline', '');
      hideError();
    });


    $btn[0].addEventListener('mousedown', function (e) {
      if (!validate()) {
        e.preventDefault();
        e.stopImmediatePropagation();
        unlockButton();
      }
    }, true);

    $btn[0].addEventListener('touchstart', function (e) {
      if (!validate()) {
        e.preventDefault();
        e.stopImmediatePropagation();
        unlockButton();
      }
    }, { capture: true, passive: false });


    $form[0].addEventListener('submit', function (e) {
      if (!validate()) {
        e.preventDefault();
        e.stopImmediatePropagation();
        unlockButton();
        return false;
      }
    }, true);
  }

 
  function initAll() {
    // delivery-form может быть на внешнем div или на самой форме
    $('.delivery-form').each(function () { initForm($(this)); });
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', initAll);
  } else {
    initAll();
  }


  new MutationObserver(function (mutations) {
    for (var i = 0; i < mutations.length; i++) {
      var nodes = mutations[i].addedNodes;
      for (var j = 0; j < nodes.length; j++) {
        var node = nodes[j];
        if (node.nodeType !== 1) continue;
        var $node = $(node);
        if ($node.hasClass('delivery-form')) initForm($node);
        $node.find('.delivery-form').each(function () { initForm($(this)); });
      }
    }
  }).observe(document.body, { childList: true, subtree: true });

})();