and 
    $enlighter_attrs = [
        'data-enlighter-language'   => true,
        'data-enlighter-theme'      => true,
        'data-enlighter-group'      => true,
        'data-enlighter-title'      => true,
        'data-enlighter-linenumbers' => true,
        'data-enlighter-highlight'  => true,
        'data-enlighter-lineoffset' => true,
    ];

    if (isset($allowed['pre'])) {
        $allowed['pre'] = array_merge($allowed['pre'], $enlighter_attrs);
    }
    if (isset($allowed['code'])) {
        $allowed['code'] = array_merge($allowed['code'], $enlighter_attrs);
    }

    return $allowed;
}, 10, 2);

// ============================================================
// Gutenberg 自定义块注册
// ============================================================

// Register category server-side so it exists before JS registerBlockType runs.
// Keep untyped + defensive: some plugins pass unexpected shapes; typed params can 500 the editor.
add_filter('block_categories_all', static function ($categories, $context = null) {
    if (!is_array($categories)) {
        return $categories;
    }

    foreach ($categories as $category) {
        $slug = '';
        if (is_array($category)) {
            $slug = (string) ($category['slug'] ?? '');
        } elseif (is_object($category) && isset($category->slug)) {
            $slug = (string) $category->slug;
        }
        if ($slug === 'aksrt-blocks') {
            return $categories;
        }
    }

    $categories[] = [
        'slug'  => 'aksrt-blocks',
        'title' => 'AKSRT',
        'icon'  => null,
    ];

    return $categories;
}, 10, 2);

add_action('enqueue_block_editor_assets', function () {
    $base_uri = get_template_directory_uri();

    $blocks_js = get_template_directory() . '/assets/js/gutenberg-blocks.js';
    if (file_exists($blocks_js)) {
        wp_enqueue_script(
            'aksrt-gutenberg-blocks',
            $base_uri . '/assets/js/gutenberg-blocks.js',
            // wp-media-utils: MediaUpload for carousel block
            ['wp-blocks', 'wp-element', 'wp-components', 'wp-block-editor', 'wp-hooks', 'wp-media-utils', 'wp-data'],
            (string) filemtime($blocks_js),
            true
        );
    }

    $blocks_css = get_template_directory() . '/assets/css/gutenberg-blocks.css';
    if (file_exists($blocks_css)) {
        wp_enqueue_style(
            'aksrt-gutenberg-blocks',
            $base_uri . '/assets/css/gutenberg-blocks.css',
            [],
            (string) filemtime($blocks_css)
        );
    }
});

// Front-end styles for Gutenberg blocks
add_action('enqueue_block_assets', function () {
    if (is_admin()) return; // Already loaded in editor

    $posts = [];
    $queried = get_queried_object();
    if ($queried instanceof \WP_Post) {
        $posts[$queried->ID] = $queried;
    }

    global $wp_query;
    if ($wp_query instanceof \WP_Query) {
        foreach ((array) $wp_query->posts as $post) {
            if ($post instanceof \WP_Post) {
                $posts[$post->ID] = $post;
            }
        }
    }

    $has_carousel = false;
    foreach ($posts as $post) {
        if (has_block('aksrt/carousel', $post)) {
            $has_carousel = true;
            break;
        }
    }
    if (!$has_carousel) return;

    $base_uri = get_template_directory_uri();
    $blocks_css = get_template_directory() . '/assets/css/gutenberg-blocks.css';
    if (file_exists($blocks_css)) {
        wp_enqueue_style(
            'aksrt-gutenberg-blocks-front',
            $base_uri . '/assets/css/gutenberg-blocks.css',
            [],
            (string) filemtime($blocks_css)
        );
    }
});

// ============================================================
// Gutenberg Carousel Block 渲染回调
// ============================================================
add_action('init', function () {
    if (!function_exists('register_block_type')) return;

    register_block_type('aksrt/carousel', [
        'render_callback' => function (array $attributes): string {
            $images = $attributes['images'] ?? [];
            if (empty($images)) return '';

            $autoplay = !empty($attributes['autoplay']) ? 'true' : 'false';
            $delay = absint($attributes['delay'] ?? 3000);
            $effect = sanitize_text_field($attributes['effect'] ?? 'slide');

            $slides = '';
            foreach ($images as $img) {
                if (empty($img['url'])) continue;
                $alt = esc_attr($img['alt'] ?? '');
                $url = esc_url($img['url']);
                $slides .= '
';
            }

            if (empty($slides)) return '';

            return '
'
                . '
' . $slides . '
'
                . '
'
                . '
'
                . '
';
        },
    ]);
});

// ============================================================
// 付费内容系统：the_content 过滤器
// ============================================================

/**
 * 未购买的图库/视频正文只保留公开预览；购买卡由 single 模板渲染。
 */
add_filter('the_content', 'aksrt_paid_content_filter', 20);