/**
 * File scripts.js.
 *
 * Handles toggling the navigation menu for small screens and enables TAB key
 * navigation support for dropdown menus.
 */
jQuery(document).ready(function($){
	const siteNavigation = document.getElementById( 'site-navigation' );
	const siteBody = document.body;

	// Return early if the navigation don't exist.
	if ( ! siteNavigation ) {
		return;
	}

	const button = siteNavigation.getElementsByTagName( 'button' )[ 0 ];

	// Return early if the button don't exist.
	if ( 'undefined' === typeof button ) {
		return;
	}

	const menu = siteNavigation.getElementsByTagName( 'ul' )[ 0 ];

	// Hide menu toggle button if menu is empty and return early.
	if ( 'undefined' === typeof menu ) {
		button.style.display = 'none';
		return;
	}

	if ( ! menu.classList.contains( 'nav-menu' ) ) {
		menu.classList.add( 'nav-menu' );
	}

	// Toggle the .toggled class and the aria-expanded value each time the button is clicked.
	button.addEventListener( 'click', function() {
		siteNavigation.classList.toggle( 'toggled' );
		siteBody.classList.toggle( 'overflow-hidden' );

		if ( button.getAttribute( 'aria-expanded' ) === 'true' ) {
			button.setAttribute( 'aria-expanded', 'false' );
		} else {
			button.setAttribute( 'aria-expanded', 'true' );
		}
	} );

	// tab only inside mobile menu
	var mainNavigation = $( ".main-navigation" )
		.attr( "tabindex", "-1" )
		// Inpsect any keydown events that come from within the capture container.
		.keydown(
			function handleKeydown( event ) {
				if ( event.key.toLowerCase() !== "tab" ) {
					return;
				}

				var tabbable = $()
					// All form elements can receive focus.
					.add( mainNavigation.find( "button, input, select, textarea" ) )
					// Any element that has an HREF can receive focus.
					.add( mainNavigation.find( "[href]" ) )
					// Any element that has a non-(-1) tabindex can receive focus.
					.add( mainNavigation.find( "[tabindex]:not([tabindex='-1'])" ) )
				;
				var target = $( event.target );

				// Reverse tabbing (Key: Shift+Tab).
				if ( event.shiftKey ) {
					if ( target.is( mainNavigation ) || target.is( tabbable.first() ) ) {
						// Force focus to last element in container.
						event.preventDefault();
						tabbable.last().focus();
					}
				// Forward tabbing (Key: Tab).
				} else {
					if ( target.is( tabbable.last() ) ) {
						// Force focus to first element in container.
						event.preventDefault();
						tabbable.first().focus();

					}
				}
			}
		)
	;

	// Remove the .toggled class and set aria-expanded to false when the user clicks outside the navigation.
	document.addEventListener( 'click', function( event ) {
		const isClickInside = siteNavigation.contains( event.target );

		if ( ! isClickInside ) {
			siteNavigation.classList.remove( 'toggled' );
			siteBody.classList.remove( 'overflow-hidden' );
			button.setAttribute( 'aria-expanded', 'false' );
		}
	} );

	// Get all the link elements within the menu.
	const links = menu.getElementsByTagName( 'a' );

	// Get all the link elements with children within the menu.
	const linksWithChildren = menu.querySelectorAll( '.menu-item-has-children > a, .page_item_has_children > a' );

	// Toggle focus each time a menu link is focused or blurred.
	for ( const link of links ) {
		link.addEventListener( 'focus', toggleFocus, true );
		link.addEventListener( 'blur', toggleFocus, true );
	}

	// Toggle focus each time a menu link with children receive a touch event.
	for ( const link of linksWithChildren ) {
		link.addEventListener( 'touchstart', toggleFocus, false );
	}

	/**
	 * Sets or removes .focus class on an element.
	 */
	function toggleFocus() {
		if ( event.type === 'focus' || event.type === 'blur' ) {
			let self = this;
			const parentSelf = self.parentNode;
			const mainParent = parentSelf.parentNode;
			// Move up through the ancestors of the current link until we hit .nav-menu.
			while ( ! self.classList.contains( 'nav-menu' ) ) {
				// On li elements toggle the class .focus.
				if ( 'li' === self.tagName.toLowerCase() ) {
					self.classList.toggle( 'focus' );
				}
				self = self.parentNode;
			}
			mainParent.classList.toggle( 'open' );
		}

		if ( event.type === 'touchstart' ) {
			const menuItem = this.parentNode;
			event.preventDefault();
			for ( const link of menuItem.parentNode.children ) {
				if ( menuItem !== link ) {
					link.classList.remove( 'focus' );
				}
			}
			menuItem.classList.toggle( 'focus' );
		}
	}

	// Get all the + of parent menu item
	var linksWithPlus = document.querySelectorAll('.page_item_has_children');

	[...linksWithPlus].forEach((parent, i) => {
		var el = document.createElement('span');
		el.innerHTML = "+";
		var menuLink = parent.children[0];
		var href = menuLink.href;
		menuLink.after(el);
		el.addEventListener( 'click', function() {
			var menuChildren = parent.children[2];
			menuChildren.classList.toggle('open');
		});
		menuLink.addEventListener( 'click', function() {
			window.location = href;
		});
		
	});
});

(function() {
  var elements;
  var windowHeight;

  function init() {
    elements = document.querySelectorAll('.hidden');
    windowHeight = window.innerHeight;
  }

  function checkPosition() {
    for (var i = 0; i < elements.length; i++) {
      var element = elements[i];
      var positionFromTop = elements[i].getBoundingClientRect().top;

      if (positionFromTop - windowHeight <= 0) {
        element.classList.add('fadeInBottom');
        element.classList.remove('hidden');
      }
    }
  }

  window.addEventListener('scroll', checkPosition);
  window.addEventListener('resize', init);

  init();
  checkPosition();
})();