/**
 * ============================================================
 * 1) REST: обновление Yoast SEO для Homepage
 * ============================================================
 */
add_action('rest_api_init', function () {

    register_rest_route('custom/v1', '/yoast-home', [
        'methods'  => 'POST',
        'permission_callback' => function () {
            return current_user_can('manage_options');
        },
        'args' => [
            'title'            => ['type' => 'string',  'required' => false],
            'metadesc'         => ['type' => 'string',  'required' => false],
            'social_title'     => ['type' => 'string',  'required' => false],
            'social_desc'      => ['type' => 'string',  'required' => false],
            'social_image'     => ['type' => 'string',  'required' => false],
            'also_update_front'=> ['type' => 'boolean', 'required' => false, 'default' => false],
        ],
        'callback' => function (WP_REST_Request $r) {

            $opt = get_option('wpseo_titles', []);
            if (!is_array($opt)) $opt = [];

            if ($t = $r->get_param('title'))        $opt['title-home-wpseo']              = wp_strip_all_tags($t);
            if ($d = $r->get_param('metadesc'))     $opt['metadesc-home-wpseo']           = wp_strip_all_tags($d);
            if ($t = $r->get_param('social_title')) $opt['social-title-home-wpseo']       = wp_strip_all_tags($t);
            if ($d = $r->get_param('social_desc'))  $opt['social-description-home-wpseo'] = wp_strip_all_tags($d);
            if ($u = $r->get_param('social_image')) $opt['social-image-url-home']         = esc_url_raw($u);

            update_option('wpseo_titles', $opt);

            $updated_page_meta = null;
            if ($r->get_param('also_update_front')) {
                $front_id = (int) get_option('page_on_front');
                if ($front_id > 0) {
                    if ($t = $r->get_param('title'))    update_post_meta($front_id, '_yoast_wpseo_title',    wp_strip_all_tags($t));
                    if ($d = $r->get_param('metadesc')) update_post_meta($front_id, '_yoast_wpseo_metadesc', wp_strip_all_tags($d));
                    $updated_page_meta = ['page_on_front' => $front_id];
                }
            }

            return [
                'ok'         => true,
                'saved'      => $opt,
                'front_meta' => $updated_page_meta,
            ];
        }
    ]);

});


/**
 * ============================================================
 * 2) show_in_rest для Yoast meta (post/page)
 * ============================================================
 */
add_action('init', function () {

    register_post_meta('post', '_yoast_wpseo_metadesc', [
        'type'         => 'string',
        'single'       => true,
        'show_in_rest' => true,
        'auth_callback'=> function () { return current_user_can('edit_posts'); },
    ]);

    register_post_meta('post', '_yoast_wpseo_title', [
        'type'         => 'string',
        'single'       => true,
        'show_in_rest' => true,
        'auth_callback'=> function () { return current_user_can('edit_posts'); },
    ]);

    register_post_meta('page', '_yoast_wpseo_title', [
        'type'          => 'string',
        'single'        => true,
        'show_in_rest'  => true,
        'auth_callback' => function () { return current_user_can('edit_pages'); },
    ]);

    register_post_meta('page', '_yoast_wpseo_metadesc', [
        'type'          => 'string',
        'single'        => true,
        'show_in_rest'  => true,
        'auth_callback' => function () { return current_user_can('edit_pages'); },
    ]);

});


/**
 * ============================================================
 * 3) Разрешённые MIME для upload (png/jpg/jpeg)
 * ============================================================
 */
add_filter('upload_mimes', function ($mimes) {
    $mimes['png']  = 'image/png';
    $mimes['jpg']  = 'image/jpeg';
    $mimes['jpeg'] = 'image/jpeg';
    return $mimes;
});


/**
 * ============================================================
 * 4) PBN Dynamic CSS (универсальная уникализация дизайна)
 *
 *   GET  /wp-json/custom/v1/pbn-css   -> проверить, есть ли CSS
 *   POST /wp-json/custom/v1/pbn-css   -> записать CSS (перезаписывает!)
 *
 * CSS хранится в option: pbn_dynamic_css
 * и печатается в <head> одним блоком:
 * <style id="pbn-dynamic-css">...</style>
 * ============================================================
 */
add_action('rest_api_init', function () {

    register_rest_route('custom/v1', '/pbn-css', [

        // --- GET: прочитать текущий CSS (для IF в n8n: "не перезаписывать если уже есть") ---
        [
            'methods'  => 'GET',
            'permission_callback' => function () {
                return current_user_can('manage_options'); // только админ
            },
            'callback' => function () {
                $css = (string) get_option('pbn_dynamic_css', '');
                return [
                    'ok'  => true,
                    'len' => strlen($css),
                    'css' => $css, // можно убрать, если не хочешь отдавать сам CSS
                ];
            }
        ],

        // --- POST: сохранить CSS ---
        [
            'methods'  => 'POST',
            'permission_callback' => function () {
                return current_user_can('manage_options'); // только админ
            },
            'args' => [
                'css' => ['type' => 'string', 'required' => true],
            ],
            'callback' => function (WP_REST_Request $r) {

                $css = (string) $r->get_param('css');

                // Минимальная безопасная очистка (CSS всё равно текст, но убираем HTML/скрипты)
                $css = wp_kses($css, []);

                update_option('pbn_dynamic_css', $css);

                return [
                    'ok'  => true,
                    'len' => strlen($css),
                ];
            }
        ],
    ]);

});

add_action('wp_head', function () {
    $css = (string) get_option('pbn_dynamic_css', '');
    if ($css !== '') {
        echo '<style id="pbn-dynamic-css">' . $css . '</style>';
    }
}, 99);

/**
 * ============================================================
 * 5) Anti-footprint WP (минимальный, безопасный)
 * ============================================================
 */

// Убираем версию WP из <head>
remove_action('wp_head', 'wp_generator');

// Отключаем emoji
remove_action('wp_head', 'print_emoji_detection_script', 7);
remove_action('wp_print_styles', 'print_emoji_styles');
remove_action('admin_print_scripts', 'print_emoji_detection_script');
remove_action('admin_print_styles', 'print_emoji_styles');

// Убираем RSD / WLW / shortlink / oEmbed ссылки из head
remove_action('wp_head', 'rsd_link');
remove_action('wp_head', 'wlwmanifest_link');
remove_action('wp_head', 'wp_shortlink_wp_head', 10);
remove_action('wp_head', 'wp_oembed_add_discovery_links', 10);
remove_action('wp_head', 'wp_oembed_add_host_js');

// Отключаем XML-RPC
add_filter('xmlrpc_enabled', '__return_false');

// Убираем версии из статики (?ver=)
add_filter('style_loader_src', function($src) {
  return remove_query_arg('ver', $src);
}, 9999);

add_filter('script_loader_src', function($src) {
  return remove_query_arg('ver', $src);
}, 9999);