/**
* DO NOT EDIT THIS FILE.
* See the following change record for more information,
* https://www.drupal.org/node/2815083
* @preserve
**/

(function ($, Drupal, drupalSettings, _, Backbone, JSON, storage) {
  var options = $.extend(drupalSettings.contextual, {
    strings: {
      open: Drupal.t('Open'),
      close: Drupal.t('Close')
    }
  });

  var cachedPermissionsHash = storage.getItem('Drupal.contextual.permissionsHash');
  var permissionsHash = drupalSettings.user.permissionsHash;
  if (cachedPermissionsHash !== permissionsHash) {
    if (typeof permissionsHash === 'string') {
      _.chain(storage).keys().each(function (key) {
        if (key.substring(0, 18) === 'Drupal.contextual.') {
          storage.removeItem(key);
        }
      });
    }
    storage.setItem('Drupal.contextual.permissionsHash', permissionsHash);
  }

  function initContextual($contextual, html) {
    var $region = $contextual.closest('.contextual-region');
    var contextual = Drupal.contextual;

    $contextual.html(html).addClass('contextual').prepend(Drupal.theme('contextualTrigger'));

    var destination = 'destination=' + Drupal.encodePath(drupalSettings.path.currentPath);
    $contextual.find('.contextual-links a').each(function () {
      var url = this.getAttribute('href');
      var glue = url.indexOf('?') === -1 ? '?' : '&';
      this.setAttribute('href', url + glue + destination);
    });

    var model = new contextual.StateModel({
      title: $region.find('h2').eq(0).text().trim()
    });
    var viewOptions = $.extend({ el: $contextual, model: model }, options);
    contextual.views.push({
      visual: new contextual.VisualView(viewOptions),
      aural: new contextual.AuralView(viewOptions),
      keyboard: new contextual.KeyboardView(viewOptions)
    });
    contextual.regionViews.push(new contextual.RegionView($.extend({ el: $region, model: model }, options)));

    contextual.collection.add(model);

    $(document).trigger('drupalContextualLinkAdded', {
      $el: $contextual,
      $region: $region,
      model: model
    });

    adjustIfNestedAndOverlapping($contextual);
  }

  function adjustIfNestedAndOverlapping($contextual) {
    var $contextuals = $contextual.parents('.contextual-region').eq(-1).find('.contextual');

    if ($contextuals.length <= 1) {
      return;
    }

    var firstTop = $contextuals.eq(0).offset().top;
    var secondTop = $contextuals.eq(1).offset().top;
    if (firstTop === secondTop) {
      var $nestedContextual = $contextuals.eq(1);

      var height = 0;
      var $trigger = $nestedContextual.find('.trigger');

      $trigger.removeClass('visually-hidden');
      height = $nestedContextual.height();
      $trigger.addClass('visually-hidden');

      $nestedContextual.css({ top: $nestedContextual.position().top + height });
    }
  }

  Drupal.behaviors.contextual = {
    attach: function attach(context) {
      var $context = $(context);

      var $placeholders = $context.find('[data-contextual-id]').once('contextual-render');
      if ($placeholders.length === 0) {
        return;
      }

      var ids = [];
      $placeholders.each(function () {
        ids.push($(this).attr('data-contextual-id'));
      });

      var uncachedIDs = _.filter(ids, function (contextualID) {
        var html = storage.getItem('Drupal.contextual.' + contextualID);
        if (html && html.length) {
          window.setTimeout(function () {
            initContextual($context.find('[data-contextual-id="' + contextualID + '"]'), html);
          });
          return false;
        }
        return true;
      });

      if (uncachedIDs.length > 0) {
        $.ajax({
          url: Drupal.url('contextual/render'),
          type: 'POST',
          data: { 'ids[]': uncachedIDs },
          dataType: 'json',
          success: function success(results) {
            _.each(results, function (html, contextualID) {
              storage.setItem('Drupal.contextual.' + contextualID, html);

              if (html.length > 0) {
                $placeholders = $context.find('[data-contextual-id="' + contextualID + '"]');

                for (var i = 0; i < $placeholders.length; i++) {
                  initContextual($placeholders.eq(i), html);
                }
              }
            });
          }
        });
      }
    }
  };

  Drupal.contextual = {
    views: [],

    regionViews: []
  };

  Drupal.contextual.collection = new Backbone.Collection([], { model: Drupal.contextual.StateModel });

  Drupal.theme.contextualTrigger = function () {
    return '<button class="trigger visually-hidden focusable" type="button"></button>';
  };
})(jQuery, Drupal, drupalSettings, _, Backbone, window.JSON, window.sessionStorage);