jQuery(document).ready(function($) {
  var sticky_widget_mode   = AI_FUNC_GET_STICKY_WIDGET_MODE;
  var sticky_widget_margin = AI_FUNC_GET_STICKY_WIDGET_MARGIN;
  var document_width = $(document).width();
  var ai_debug = typeof ai_debugging !== 'undefined';

  $(".ai-sticky-widget").each (function () {
    var widget = $(this);
    var widget_width = widget.width();

    if (ai_debug) console.log ('');
    if (ai_debug) console.log ("WIDGET:", widget.width (), widget.prop ("tagName"), widget.attr ("id"));

    var already_sticky_js = false;
    var sidebar = widget.parent ();
    while (sidebar.prop ("tagName") != "BODY") {

      if (sidebar.hasClass ('theiaStickySidebar')) {
        already_sticky_js = true;
        break;
      }

      if (ai_debug) console.log ("SIDEBAR:", sidebar.width (), sidebar.prop ("tagName"), sidebar.attr ("id"));

      var parent_element = sidebar.parent ();
      var parent_element_width = parent_element.width();
      if (parent_element_width > widget_width * 1.2 || parent_element_width > document_width / 2) break;
      sidebar = parent_element;
    }
    if (already_sticky_js) {
      if (ai_debug) console.log ("JS STICKY SIDEBAR ALREADY SET");
      return;
    }

    var new_sidebar_top = sidebar.offset ().top - widget.offset ().top + sticky_widget_margin;

    if (ai_debug) console.log ("NEW SIDEBAR TOP:", new_sidebar_top);

    if (sticky_widget_mode == 0) {
      // CSS
      if (sidebar.css ("position") != "sticky" || isNaN (parseInt (sidebar.css ("top"))) || sidebar.css ("top") < new_sidebar_top) {
        sidebar.css ("position", "sticky").css ("position", "-webkit-sticky").css ("top", new_sidebar_top);

        if (ai_debug) console.log ("CSS STICKY SIDEBAR, TOP:", new_sidebar_top);
      }
      else if (ai_debug) console.log ("CSS STICKY SIDEBAR ALREADY SET");
    } else {
        // Javascript
        sidebar.theiaStickySidebar({
          additionalMarginTop: new_sidebar_top,
          sidebarBehavior: 'stick-to-top',
        });

        if (ai_debug) console.log ("JS STICKY SIDEBAR, TOP:", new_sidebar_top);
      }
  });

});