/**
  * Payment fields.
  */
 public function payment_fields()
 {
     $contains_subscription = false;
     if (defined('WC_VERSION') && version_compare(WC_VERSION, '2.1', '>=')) {
         $order_id = absint(get_query_var('order-pay'));
     } else {
         $order_id = isset($_GET['order_id']) ? absint($_GET['order_id']) : 0;
     }
     // Check from "pay for order" page.
     if (0 < $order_id) {
         $contains_subscription = $this->api->order_contains_subscription($order_id);
     } elseif (class_exists('WC_Subscriptions_Cart')) {
         $contains_subscription = WC_Subscriptions_Cart::cart_contains_subscription();
     }
     if ($contains_subscription) {
         wp_enqueue_script('wc-credit-card-form');
         if ($description = $this->get_description()) {
             echo wpautop(wptexturize($description));
         }
         woocommerce_get_template('credit-card/payment-form.php', array('order_total' => 0, 'installments' => 0, 'free_interest' => 0, 'transaction_rate' => 0, 'rates' => array()), 'woocommerce/iugu/', WC_Iugu::get_templates_path());
     } else {
         parent::payment_fields();
     }
 }
 /**
  * Add content to the WC emails.
  *
  * @param  object $order         Order object.
  * @param  bool   $sent_to_admin Send to admin.
  * @param  bool   $plain_text    Plain text or HTML.
  *
  * @return string                Payment instructions.
  */
 public function email_instructions($order, $sent_to_admin, $plain_text = false)
 {
     if ($sent_to_admin || !in_array($order->status, array('processing', 'on-hold')) || $this->id !== $order->payment_method) {
         return;
     }
     $data = get_post_meta($order->id, '_iugu_wc_transaction_data', true);
     if (isset($data['pdf'])) {
         if ($plain_text) {
             woocommerce_get_template('bank-slip/emails/plain-instructions.php', array('pdf' => $data['pdf']), 'woocommerce/iugu/', WC_Iugu::get_templates_path());
         } else {
             woocommerce_get_template('bank-slip/emails/html-instructions.php', array('pdf' => $data['pdf']), 'woocommerce/iugu/', WC_Iugu::get_templates_path());
         }
     }
 }