<?php
/**
 * Plugin Name: Asterion — Add submenus to Header — Main + style nav-menu dropdown
 * /?av_add_submenus=1
 *   1. For each of Solutions, Industries, Technology (top-level items in
 *      Header — Main, term_id=9), adds child menu items pointing to the
 *      respective detail pages.
 *   2. Updates the Bricks nav-menu element settings (hdrnav in template 25)
 *      with dropdown styling : navy background, gold hover, padding.
 *
 * Idempotent : skips children that already exist (matched by URL).
 */
defined('ABSPATH') || exit;

add_action('template_redirect', function () {
    if (! in_array($_SERVER['SERVER_NAME'] ?? '', ['localhost', '127.0.0.1'], true)) return;
    if (empty($_GET['av_add_submenus'])) return;

    header('Content-Type: text/plain; charset=utf-8');

    /* -----------------------------------------------------------------
       1. Map slug → list of children for each top-level URL
       ----------------------------------------------------------------- */
    $sub_menus = [
        '/solutions/' => [
            ['title' => 'MY PROSERVE',      'url' => '/solutions/my-proserve/'],
            ['title' => 'PROSERVE FLEX',    'url' => '/solutions/proserve-flex/'],
            ['title' => 'PROSERVE ACADEMY', 'url' => '/solutions/proserve-academy/'],
            ['title' => 'PROSERVE+',        'url' => '/solutions/customization/'],
        ],
        '/industries/' => [
            ['title' => 'Police',         'url' => '/industries/police/'],
            ['title' => 'Special Forces', 'url' => '/industries/special-forces/'],
            ['title' => 'Military',       'url' => '/industries/military/'],
            ['title' => 'Firefighters',   'url' => '/industries/firefighters/'],
        ],
        '/technology/' => [
            ['title' => 'VR Hardware',         'url' => '/technology/vr-hardware/'],
            ['title' => 'Software & AI',       'url' => '/technology/software-ai/'],
            ['title' => 'Weapons & Tracking',  'url' => '/technology/weapons-tracking/'],
            ['title' => 'Scenarios',           'url' => '/technology/scenarios/'],
            ['title' => 'Instructor Cockpit',  'url' => '/technology/instructor-cockpit/'],
            ['title' => 'After-Action Review', 'url' => '/technology/after-action-review/'],
        ],
    ];

    $term_id = 9;  // Header — Main
    $existing = wp_get_nav_menu_items($term_id) ?: [];
    $by_url = [];
    foreach ($existing as $item) {
        $by_url[$item->url] = $item;
    }

    $total_added = 0;
    foreach ($sub_menus as $parent_url => $children) {
        if (! isset($by_url[$parent_url])) {
            echo "  Parent $parent_url not found in menu — skipping\n";
            continue;
        }
        $parent_id = $by_url[$parent_url]->ID;
        echo "── Parent '{$by_url[$parent_url]->title}' (#$parent_id, url=$parent_url) ──\n";

        foreach ($children as $child) {
            if (isset($by_url[$child['url']])) {
                echo "  '{$child['title']}' ({$child['url']}) already exists (#{$by_url[$child['url']]->ID}) — skip\n";
                continue;
            }
            $new_id = wp_update_nav_menu_item($term_id, 0, [
                'menu-item-title'     => $child['title'],
                'menu-item-url'       => $child['url'],
                'menu-item-type'      => 'custom',
                'menu-item-status'    => 'publish',
                'menu-item-parent-id' => $parent_id,
            ]);
            if (is_wp_error($new_id) || ! $new_id) {
                echo "  '{$child['title']}' : FAILED\n";
            } else {
                echo "  '{$child['title']}' → #$new_id (parent=$parent_id)\n";
                $total_added++;
            }
        }
        echo "\n";
    }

    echo "Added $total_added new menu item(s).\n\n";

    /* -----------------------------------------------------------------
       2. Patch nav-menu element 'hdrnav' settings : dropdown styling
       ----------------------------------------------------------------- */
    global $wpdb;
    foreach (['_bricks_page_content_2', '_bricks_page_header_2'] as $key) {
        $val = $wpdb->get_var($wpdb->prepare(
            "SELECT meta_value FROM {$wpdb->postmeta} WHERE post_id=%d AND meta_key=%s LIMIT 1",
            25, $key
        ));
        if (! is_string($val) || $val === '') continue;
        $is_json = ($val[0] === '[');
        $elements = $is_json ? json_decode($val, true) : @unserialize($val);
        if (! is_array($elements)) continue;

        $modified = false;
        foreach ($elements as $i => $el) {
            if (($el['id'] ?? '') !== 'hdrnav') continue;

            // Dropdown background + padding + typography
            $elements[$i]['settings']['subMenuBackgroundColor']    = ['hex' => '#0B1F3A', 'raw' => 'var(--color-brand-navy)'];
            $elements[$i]['settings']['subMenuBorder']             = [
                'width' => ['top' => '1px', 'right' => '1px', 'bottom' => '1px', 'left' => '1px'],
                'color' => ['raw' => 'rgba(201, 164, 90, 0.2)'],
                'style' => 'solid',
            ];
            $elements[$i]['settings']['subMenuPadding']            = [
                'top' => '0.5rem', 'right' => '0', 'bottom' => '0.5rem', 'left' => '0',
            ];
            $elements[$i]['settings']['subMenuItemPadding']        = [
                'top' => '0.6rem', 'right' => '1.25rem', 'bottom' => '0.6rem', 'left' => '1.25rem',
            ];
            $elements[$i]['settings']['subMenuTypography']         = [
                'color'           => ['raw' => 'var(--color-text-on-dark)'],
                'font-size'       => '0.875rem',
                'font-weight'     => '500',
                'text-decoration' => 'none',
                'white-space'     => 'nowrap',
            ];
            $elements[$i]['settings']['subMenuItemHoverTypography'] = [
                'color' => ['raw' => 'var(--color-brand-gold)'],
            ];
            $elements[$i]['settings']['subMenuMinWidth']           = '14rem';
            // Show arrow indicator next to parents with submenu
            $elements[$i]['settings']['subMenuIndicator']          = true;

            $modified = true;
            break;
        }
        if ($modified) {
            $new = $is_json ? wp_json_encode($elements) : maybe_serialize($elements);
            $wpdb->update($wpdb->postmeta, ['meta_value' => $new],
                ['post_id' => 25, 'meta_key' => $key], ['%s'], ['%d', '%s']);
            wp_cache_delete(25, 'post_meta');
            echo "  $key : hdrnav settings updated (dropdown styling)\n";
        }
    }

    echo "\nDONE. Reload the site → hover Solutions/Industries/Technology in header → submenu drops down.\n";
    exit;
});