<?php
namespace WPDeveloper\BetterDocs\Utils;

class Node {
    public $title;
    public $tag;
    public $tag_number;
    public $key;
    /**
     * Summary of $items
     * @var array
     */
    public $items;

    public function print( $items, $toc_hierarchy, $level ) {
        $html = '';
        if ( ! empty( $items ) ) {
            $toc_hierarchy_class = ( $toc_hierarchy != 'off' && $toc_hierarchy != '' ) ? 'toc-list betterdocs-hierarchial-toc' : 'toc-list';
            $html .= $level === 1 ? '<ul class = "' . $toc_hierarchy_class . '">' : '<ul class = "betterdocs-toc-list-level-' . $level . '">';
            foreach ( $items as $item ) {
                $html .= '<li class = "betterdocs-toc-heading-level-' . ( $item->key ) . '">';
                $html .= '<a href="#' . $item->tag_number . '">' . strip_tags( $item->title ) . '</a>';
                if ( ! empty( $items ) ) {
                    $html .= $this->print( $item->items, $toc_hierarchy, ++$level );
                } else {
                    $level = 1;
                    break;
                }
                $html .= '</li>';
            }
            $html .= '</ul>';
        }
        return $html;
    }
}