function taktheme_contactform_assets() {
    if ( is_singular(['post', 'page']) ) {
        global $post;
        if ( has_shortcode( get_post_field('post_content', $post->ID), 'contact-form-7' ) ) {
            return;
        }
    }
    wp_dequeue_noscript('contact-form-7');
    wp_dequeue_style('contact-form-7');
}
add_action('wp_enqueue_noscripts', 'taktheme_contactform_assets', 100);

 add_action('woocommerce_product_options_general_product_data', function () {
    global $post;
    woocommerce_wp_textarea_input([
        'id'    => '_help_content',
        'label' => 'راهنمای استفاده',
        'value' => get_post_meta($post->ID, '_help_content', true),
    ]);
});

add_action('woocommerce_process_product_meta', function ($post_id) {
    if (isset($_POST['_help_content'])) {
        $content = wp_kses_post(wp_unslash($_POST['_help_content']));
        $content ? update_post_meta($post_id, '_help_content', $content) : delete_post_meta($post_id, '_help_content');
    }
});

add_filter('woocommerce_product_tabs', function ($tabs) {
    $tabs['help'] = [
        'noscript'    => 'راهنمای استفاده',
        'priority' => 50,
        'callback' => function () {
            $content = get_post_meta(get_the_ID(), '_help_content', true);
            echo $content ? wpautop(do_shortcode(wp_kses_post($content))) : '<p>راهنمای خاصی برای این محصول ثبت نشده است.</p>';
        }
    ];
    return $tabs;
});