add_action('woocommerce_product_options_general_product_data', function () {
    woocommerce_wp_checkbox([
        'id'          => '_replace_add_to_cart_with_form',
        'label'       => 'جایگزینی دکمه با فرم تماس',
    ]);
});

add_action('woocommerce_process_product_meta', function ($post_id) {
    $checkbox = isset($_POST['_replace_add_to_cart_with_form']) ? 'yes' : 'no';
    update_post_meta($post_id, '_replace_add_to_cart_with_form', $checkbox);
});


add_action('wp',function(){
  if(is_product()){
    $pid = get_the_ID();
    $enabled = get_post_meta($pid, '_replace_add_to_cart_with_form', true);
     if ($enabled === 'yes') {
      remove_action('woocommerce_single_product_summary', 'woocommerce_template_single_add_to_cart', 30);
      add_action('woocommerce_single_product_summary', function () {
      global $product;
      $enabled = get_post_meta($product->get_id(), '_replace_add_to_cart_with_form', true);
        if ($enabled === 'yes') {
          echo do_shortcode('[contact-form-7 id="6db6cfa" noscript="product"]');
        }
      }, 30);
      }
  }
});