(function( $ ) {// jscs:ignore validateLineBreaks
  var masthead, menuToggle, siteNavContain, siteNavigation;

  function initMainNavigation( container ) {

    // Add dropdown toggle that displays child menu items.
    var dropdownToggle = $( '<button />', { 'class': 'dropdown-toggle', 'aria-expanded': false } ).
        append( '<i class="fa-angle-down icon fa"></i>' ).
        append( $( '<span />', { 'class': 'screen-reader-text', text: bonkersScreenReaderText.expand } ) );

    container.find( '.menu-item-has-children > a, .page_item_has_children > a' ).after( dropdownToggle );

    // Set the active submenu dropdown toggle button initial state.
    container.find( '.current-menu-ancestor > button' ).
        addClass( 'toggled-on' ).
        attr( 'aria-expanded', 'true' ).
        find( '.screen-reader-text' ).
        text( bonkersScreenReaderText.collapse );

    // Set the active submenu initial state.
    container.find( '.current-menu-ancestor > .sub-menu' ).addClass( 'toggled-on' );

    container.find( '.dropdown-toggle' ).click( function( e ) {
      var _this = $( this ),
          screenReaderSpan = _this.find( '.screen-reader-text' );

      e.preventDefault();
      _this.toggleClass( 'toggled-on' );
      _this.next( '.children, .sub-menu' ).toggleClass( 'toggled-on' );

      _this.attr( 'aria-expanded', 'false' === _this.attr( 'aria-expanded' ) ? 'true' : 'false' );

      screenReaderSpan.text( screenReaderSpan.text() === bonkersScreenReaderText.expand ? bonkersScreenReaderText.collapse : bonkersScreenReaderText.expand );
    } );
  }

  initMainNavigation( $( '.main-navigation' ) );

  masthead = $( '#header' );
  menuToggle = masthead.find( '.menu-toggle' );
  siteNavContain = masthead.find( '.main-navigation' );
  siteNavigation = masthead.find( '.main-navigation > div > ul' );

  // Enable menuToggle.
  (function() {

    // Return early if menuToggle is missing.
    if ( ! menuToggle.length ) {
      return;
    }

    // Add an initial value for the attribute.
    menuToggle.attr( 'aria-expanded', 'false' );

    menuToggle.on( 'click.bonkers', function() {
      siteNavContain.toggleClass( 'toggled-on' );

      $( this ).attr( 'aria-expanded', siteNavContain.hasClass( 'toggled-on' ) );
    } );
  })();

  // Fix sub-menus for touch devices and better focus for hidden submenu items for accessibility.
  (function() {
    if ( ! siteNavigation.length || ! siteNavigation.children().length ) {
      return;
    }

    // Toggle `focus` class to allow submenu access on tablets.
    function toggleFocusClassTouchScreen() {
      if ( 'none' === $( '.menu-toggle' ).css( 'display' ) ) {

        $( document.body ).on( 'touchstart.bonkers', function( e ) {
          if ( ! $( e.target ).closest( '.main-navigation li' ).length ) {
            $( '.main-navigation li' ).removeClass( 'focus' );
          }
        } );

        siteNavigation.find( '.menu-item-has-children > a, .page_item_has_children > a' ).on( 'touchstart.bonkers', function( e ) {
          var el = $( this ).parent( 'li' );

          if ( ! el.hasClass( 'focus' ) ) {
            e.preventDefault();
            el.toggleClass( 'focus' );
            el.siblings( '.focus' ).removeClass( 'focus' );
          }
        } );

      } else {
        siteNavigation.find( '.menu-item-has-children > a, .page_item_has_children > a' ).unbind( 'touchstart.bonkers' );
      }
    }

    if ( 'ontouchstart' in window ) {
      $( window ).on( 'resize.bonkers', toggleFocusClassTouchScreen );
      toggleFocusClassTouchScreen();
    }

    siteNavigation.find( 'a' ).on( 'focus.bonkers blur.bonkers', function() {
      $( this ).parents( '.menu-item, .page_item' ).toggleClass( 'focus' );
    } );
  })();
})( jQuery );