catering-menu.php

<?php
/**
 * Plugin Name: Catering Menu System
 * Version: 2.1.0
 * Description: Mobile-first Catering Menu
 * Author: Devang Jani
 */

if (!defined('ABSPATH')) exit;

class Catering_Menu {

  public function __construct() {
    add_action('init', [$this, 'cpt']);
    add_action('init', [$this, 'tax']);
    add_shortcode('catering_menu', [$this, 'render']);
    add_action('wp_enqueue_scripts', [$this, 'assets']);
    add_action('init', [$this, 'register_menu_section_hooks'], 20);
  }

  public function register_menu_section_hooks() {
    add_action('created_menu_section', [$this, 'auto_create_menu_page'], 10, 2);
    add_action('edited_menu_section',  [$this, 'sync_menu_page_on_edit'], 10, 2);
    add_action('delete_menu_section',  [$this, 'delete_menu_page_on_term_delete'], 10, 1);
  }

  public function auto_create_menu_page($term_id, $tt_id = null) {
    $term = get_term($term_id, 'menu_section');
    if (!$term || is_wp_error($term)) return;

    $parent_id = $this->get_menu_parent_page_id();
    if (get_page_by_path('menu/' . $term->slug)) return;

    wp_insert_post([
      'post_title'   => $term->name . ' Menu',
      'post_name'    => $term->slug,
      'post_type'    => 'page',
      'post_status'  => 'publish',
      'post_parent'  => $parent_id,
      'post_content' => '[catering_menu]',
    ]);
  }

  public function sync_menu_page_on_edit($term_id, $tt_id = null) {
    $term = get_term($term_id, 'menu_section');
    if (!$term || is_wp_error($term)) return;

    $page = get_page_by_path('menu/' . $term->slug);
    if (!$page) return;

    wp_update_post([
      'ID' => $page->ID,
      'post_title' => $term->name . ' Menu',
    ]);
  }

  private function get_menu_parent_page_id() {
    $parent = get_page_by_path('menu');
    if ($parent) return $parent->ID;

    return wp_insert_post([
      'post_title'  => 'Menu',
      'post_name'   => 'menu',
      'post_status' => 'publish',
      'post_type'   => 'page',
    ]);
  }

  public function cpt() {
    register_post_type('catering_menu_item', [
      'label' => 'Menu Items',
      'public' => false,
      'show_ui' => true,
      'supports' => ['title', 'page-attributes'],
    ]);
  }

  public function tax() {
    register_taxonomy('menu_section', 'catering_menu_item', [
      'label' => 'Menu Sections',
      'show_ui' => true,
    ]);

    register_taxonomy('menu_category', 'catering_menu_item', [
      'label' => 'Menu Categories',
      'hierarchical' => true,
      'show_ui' => true,
    ]);
  }

  public function assets() {
    wp_enqueue_style('catering-menu', plugin_dir_url(__FILE__) . 'menu.css');
    wp_enqueue_script('catering-menu', plugin_dir_url(__FILE__) . 'menu.js', [], false, true);
  }

  public function render() {

    $sections = get_terms([
      'taxonomy' => 'menu_section',
      'hide_empty' => false
    ]);

    if (empty($sections)) return;

    $active = '';
    if (is_page()) {
      global $post;
      $slug = trim(str_replace('menu/', '', $post->post_name));
      if ($slug && term_exists($slug, 'menu_section')) {
        $active = $slug;
      }
    }

    if (!$active) {
      $active = $sections[0]->slug;
    }

    $items = get_posts([
      'post_type' => 'catering_menu_item',
      'posts_per_page' => -1,
      'orderby' => 'menu_order',
      'order' => 'ASC',
      'tax_query' => [
        [
          'taxonomy' => 'menu_section',
          'field' => 'slug',
          'terms' => $active
        ]
      ]
    ]);

    $map = [];

    foreach ($items as $item) {

      // 🔧 FIX: DO NOT overwrite $sections
      $item_sections = wp_get_post_terms($item->ID, 'menu_section', ['fields' => 'slugs']);
      if (!in_array($active, $item_sections, true)) continue;

      $cats = wp_get_post_terms($item->ID, 'menu_category');
      if (empty($cats)) continue;

      foreach ($cats as $cat) {
        if (!isset($map[$cat->slug])) {
          $map[$cat->slug] = [
            'name'  => $cat->name,
            'items' => []
          ];
        }
        $map[$cat->slug]['items'][] = $item->post_title;
      }
    }

    $first_cat = array_key_first($map);
    ?>

    <div class="cm-wrapper catering-menu">

      <div class="cm-top">
        <div class="cm-tabs">
          <?php foreach ($sections as $s): ?>
            <a class="cm-tab <?php echo $s->slug === $active ? 'active' : ''; ?>"
               href="<?php echo esc_url(home_url('/menu/' . $s->slug)); ?>">
              <?php echo esc_html($s->name); ?>
            </a>
          <?php endforeach; ?>
        </div>

        <a class="cm-download" href="?catering_menu_download=<?php echo esc_attr($active); ?>">
          Download Menu Items
        </a>
      </div>

      <div class="cm-header">
        <h2><?php echo esc_html(ucfirst($active)); ?> Menu</h2>
        <p>The menu shows a variety of foods we offer. Customisation available on request.</p>
      </div>

      <div class="cm-box">

        <aside class="cm-sidebar">
          <?php foreach ($map as $id => $cat): ?>
            <a href="#"
               class="cm-cat <?php echo $id === $first_cat ? 'active' : ''; ?>"
               data-cat="<?php echo esc_attr($id); ?>">
              <span class="dashicons dashicons-food"></span>
              <?php echo esc_html($cat['name']); ?>
            </a>
          <?php endforeach; ?>
        </aside>

        <div class="cm-content">
          <?php if (empty($map[$first_cat]['items'])): ?>
            <div class="cm-empty">Items coming soon. Please check back later.</div>
          <?php else: ?>
            <h3 class="cm-title"><?php echo esc_html($map[$first_cat]['name']); ?></h3>
            <ul class="cm-items">
              <?php foreach ($map[$first_cat]['items'] as $item): ?>
                <li class="cm-item">
                  <span class="dashicons dashicons-food"></span>
                  <?php echo esc_html($item); ?>
                </li>
              <?php endforeach; ?>
            </ul>
          <?php endif; ?>
        </div>

      </div>
    </div>

    <script>
      window.CM_DATA = <?php echo json_encode($map); ?>;
    </script>

    <?php
  }
}

new Catering_Menu();