<?php

/**
 * Class menu walker
 *
 * @package Martfury
 */
class Martfury_Mobile_Walker extends Walker_Nav_Menu {


	/**
	 * Start the element output.
	 * Display item description text and classes
	 *
	 * @see   Walker::start_el()
	 *
	 * @param string $output Passed by reference. Used to append additional content.
	 * @param object $item Menu item data object.
	 * @param int $depth Depth of menu item. Used for padding.
	 * @param array $args An array of arguments. @see wp_nav_menu()
	 * @param int $id Current item ID.
	 */
	public function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
		$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';

		$item_icon            = get_post_meta( $item->ID, 'tamm_menu_item_icon', true );
		$item_icon_type      	= get_post_meta( $item->ID, 'tamm_menu_item_icon_type', true );
		$item_icon_svg       	= get_post_meta( $item->ID, 'tamm_menu_item_icon_svg', true );

		$classes   = empty( $item->classes ) ? array() : (array) $item->classes;
		$classes[] = 'menu-item-' . $item->ID;


		/**
		 * Add active class for current menu item
		 */
		$active_classes = array(
			'current-menu-item',
			'current-menu-parent',
			'current-menu-ancestor',
		);
		$is_active      = array_intersect( $classes, $active_classes );
		if ( ! empty( $is_active ) ) {
			$classes[] = 'active';
		}

		/**
		 * Filter the CSS class(es) applied to a menu item's list item element.
		 *
		 * @since 3.0.0
		 * @since 4.1.0 The `$depth` parameter was added.
		 *
		 * @param array $classes The CSS classes that are applied to the menu item's `<li>` element.
		 * @param object $item The current menu item.
		 * @param array $args An array of {@see wp_nav_menu()} arguments.
		 * @param int $depth Depth of menu item. Used for padding.
		 */
		$class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args, $depth ) );
		$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';

		/**
		 * Filter the ID applied to a menu item's list item element.
		 *
		 * @since 3.0.1
		 * @since 4.1.0 The `$depth` parameter was added.
		 *
		 * @param string $menu_id The ID that is applied to the menu item's `<li>` element.
		 * @param object $item The current menu item.
		 * @param array $args An array of {@see wp_nav_menu()} arguments.
		 * @param int $depth Depth of menu item. Used for padding.
		 */

		$output .= $indent . '<li' . $class_names . '>';

		$atts           = array();
		$atts['title']  = ! empty( $item->attr_title ) ? $item->attr_title : '';
		$atts['target'] = ! empty( $item->target ) ? $item->target : '';
		$atts['rel']    = ! empty( $item->xfn ) ? $item->xfn : '';
		$atts['href']   = ! empty( $item->url ) ? $item->url : '';


		/**
		 * Filter the HTML attributes applied to a menu item's anchor element.
		 *
		 * @since 3.6.0
		 * @since 4.1.0 The `$depth` parameter was added.
		 *
		 * @param array $atts {
		 *                       The HTML attributes applied to the menu item's `<a>` element, empty strings are ignored.
		 *
		 * @type string $title Title attribute.
		 * @type string $target Target attribute.
		 * @type string $rel The rel attribute.
		 * @type string $href The href attribute.
		 * }
		 *
		 * @param object $item The current menu item.
		 * @param array $args An array of {@see wp_nav_menu()} arguments.
		 * @param int $depth Depth of menu item. Used for padding.
		 */
		$atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args, $depth );

		$attributes = '';
		foreach ( $atts as $attr => $value ) {
			if ( ! empty( $value ) ) {
				$value      = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
				$attributes .= ' ' . $attr . '="' . $value . '"';
			}
		}

		/** This filter is documented in wp-includes/post-template.php */
		$title = apply_filters( 'the_title', $item->title, $item->ID );

		/**
		 * Filter a menu item's title.
		 *
		 * @since 4.4.0
		 *
		 * @param string $title The menu item's title.
		 * @param object $item The current menu item.
		 * @param array $args An array of {@see wp_nav_menu()} arguments.
		 * @param int $depth Depth of menu item. Used for padding.
		 */
		$title = apply_filters( 'nav_menu_item_title', $title, $item, $args, $depth );

		$icon_output = '';
		if( $item_icon_type == 'svg' ) {
			$icon_output  = ! empty( $item_icon_svg ) ? '<span class="mf-svg-icon">' . martfury_sanitize_svg( $item_icon_svg ) . '</span> ' : '';
		} else {
			$icon_output = $item_icon ? '<i class="' . esc_attr( $item_icon ) . '"></i> ' : '';
		}

		$item_output = ! empty( $args->before ) ? $args->before : '';
		$item_output .= '<a' . $attributes . '>';
		$item_output .= $icon_output;
		$item_output .= ( ! empty( $args->link_before ) ? $args->link_before : '' ) . $title . ( ! empty( $args->link_after ) ? $args->link_after : '' );
		$item_output .= '</a>';
		$item_output .= ! empty( $args->after ) ? $args->after : '';

		/**
		 * Filter a menu item's starting output.
		 *
		 * The menu item's starting output only includes `$args->before`, the opening `<a>`,
		 * the menu item's title, the closing `</a>`, and `$args->after`. Currently, there is
		 * no filter for modifying the opening and closing `<li>` for a menu item.
		 *
		 * @since 3.0.0
		 *
		 * @param string $item_output The menu item's starting HTML output.
		 * @param object $item Menu item data object.
		 * @param int $depth Depth of menu item. Used for padding.
		 * @param array $args An array of {@see wp_nav_menu()} arguments.
		 */
		$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
	}

	/**
	 * Ends the element output, if needed.
	 *
	 * @see   Walker::end_el()
	 *
	 * @since 1.0.0
	 *
	 * @param string $output Passed by reference. Used to append additional content.
	 * @param object $item Page data object. Not used.
	 * @param int $depth Depth of page. Not Used.
	 * @param array $args An array of arguments. @see wp_nav_menu()
	 */
	public function end_el( &$output, $item, $depth = 0, $args = array() ) {
		$output .= "</li>\n";
	}
}