Refactor code structure for improved readability and maintainability

modules/ps_emailsubscription/ps_emailsubscription.php

@@ -479,11 +479,11 @@ class Ps_Emailsubscription extends Module implements WidgetInterface
                     }
 
                     if ($code = Configuration::get('NW_VOUCHER_CODE')) {
-                        $this->sendVoucher($email, $code);
+                        // $this->sendVoucher($email, $code);
                     }
 
                     if (Configuration::get('NW_CONFIRMATION_EMAIL')) {
-                        $this->sendConfirmationEmail($email);
+                        $this->sendConfirmationEmail($email, $code);
                     }
                 }
             }
@@ -819,20 +819,17 @@ class Ps_Emailsubscription extends Module implements WidgetInterface
      *
      * @return bool
      */
-    protected function sendConfirmationEmail($email)
+    protected function sendConfirmationEmail($email, $code)
     {
         $language = new Language($this->context->language->id);
 
         return Mail::send(
             $this->context->language->id,
             'newsletter_conf',
-            $this->trans(
-                'Newsletter confirmation',
-                [],
-                'Emails.Subject',
-                $language->locale
-            ),
-            [],
+            'Potwierdzenie zapisu do newslettera',
+            [
+                '{discount}' => $code,
+            ],
             pSQL($email),
             null,
             null,