<?php
/**
 * Plugin Name: Asterion — Create WP Menu (one-shot, idempotent)
 * Description: /?av_create_menu=NAME → creates/updates a WP nav menu and returns its term_id.
 *
 * Predefined menus :
 *   /?av_create_menu=header-main  → 5 items : Solutions / Industries / Technology / Why Asterion / Insights
 *   /?av_create_menu=footer-nav   → Solutions / Industries / Technology pages
 *   /?av_create_menu=footer-co    → About / Customers / Partners / Insights
 *   /?av_create_menu=footer-legal → Privacy / Terms / Cookies / Imprint
 */
defined('ABSPATH') || exit;

add_action('init', function () {
    if (empty($_GET['av_create_menu'])) return;
    if (! in_array($_SERVER['SERVER_NAME'] ?? '', ['localhost', '127.0.0.1'], true)) wp_die('localhost only');

    require_once ABSPATH . 'wp-admin/includes/nav-menu.php';

    $name = sanitize_text_field($_GET['av_create_menu']);

    $blueprints = [
        'header-main' => [
            'label' => 'Header — Main',
            'items' => [
                ['title' => 'Solutions',     'url' => '/solutions/'],
                ['title' => 'Industries',    'url' => '/industries/'],
                ['title' => 'Technology',    'url' => '/technology/'],
                ['title' => 'Why Asterion',  'url' => '/why-asterion/'],
                ['title' => 'Insights',      'url' => '/insights/'],
            ],
        ],
        'footer-nav' => [
            'label' => 'Footer — Solutions',
            'items' => [
                ['title' => 'Solutions',  'url' => '/solutions/'],
                ['title' => 'Industries', 'url' => '/industries/'],
                ['title' => 'Technology', 'url' => '/technology/'],
            ],
        ],
        'footer-co' => [
            'label' => 'Footer — Company',
            'items' => [
                ['title' => 'About',     'url' => '/about/'],
                ['title' => 'Customers', 'url' => '/customers/'],
                ['title' => 'Partners',  'url' => '/partners/'],
                ['title' => 'Insights',  'url' => '/insights/'],
            ],
        ],
        'footer-legal' => [
            'label' => 'Footer — Legal',
            'items' => [
                ['title' => 'Privacy',  'url' => '/privacy/'],
                ['title' => 'Terms',    'url' => '/terms/'],
                ['title' => 'Cookies',  'url' => '/cookies/'],
                ['title' => 'Imprint',  'url' => '/imprint/'],
            ],
        ],
    ];

    if (! isset($blueprints[$name])) {
        wp_die('unknown menu blueprint : ' . esc_html($name) . '. Available : ' . implode(', ', array_keys($blueprints)));
    }

    $bp    = $blueprints[$name];
    $label = $bp['label'];

    // Idempotent : reuse existing menu if name matches
    $menu = wp_get_nav_menu_object($label);
    if (! $menu) {
        $menu_id = wp_create_nav_menu($label);
        if (is_wp_error($menu_id)) wp_die('create error : ' . $menu_id->get_error_message());
        $menu = wp_get_nav_menu_object($menu_id);
    } else {
        // Wipe existing items to repush fresh
        $existing = wp_get_nav_menu_items($menu->term_id);
        foreach ($existing as $item) {
            wp_delete_post($item->ID, true);
        }
    }

    $report = ["Menu \"$label\" (term_id={$menu->term_id})"];

    foreach ($bp['items'] as $i => $item) {
        $item_id = wp_update_nav_menu_item($menu->term_id, 0, [
            'menu-item-title'     => $item['title'],
            'menu-item-url'       => $item['url'],
            'menu-item-status'    => 'publish',
            'menu-item-type'      => 'custom',
            'menu-item-position'  => $i + 1,
        ]);
        $report[] = "  + {$item['title']} → {$item['url']} (item_id=$item_id)";
    }

    header('Content-Type: text/plain; charset=utf-8');
    echo implode("\n", $report);
    echo "\n\nUSE IN BRICKS : nav-menu element with menu = {$menu->term_id}";
    exit;
});