Allow mails to be translated by a given language (#68)

* Allow mails to be translated by a given language

* Update FlowSubscriber.php

---------

Co-authored-by: Shyim <[email protected]>

Author: jasperP98

src/Services/TemplateMailContext.php

@@ -14,6 +14,7 @@ class TemplateMailContext
     public function __construct(
         private readonly string $salesChannelId,
         private readonly Context $context,
+        private readonly ?string $languageId = null,
     ) {}
 
     public function getSalesChannelId(): string
@@ -25,4 +26,9 @@ public function getContext(): Context
     {
         return $this->context;
     }
+
+    public function getLanguageId(): ?string
+    {
+        return $this->languageId;
+    }
 }

src/Subscriber/FlowSubscriber.php

@@ -101,27 +101,31 @@ private function sendMail(DataBag $dataBag, string $mailTemplateTypeId, Context
     private function createTemplateMailContext(ParameterBag $dataBag, Context $context): TemplateMailContext
     {
         $salesChannelId = $dataBag->get('salesChannelId');
+        $languageId = $dataBag->get('languageId');
 
         return new TemplateMailContext(
             \is_string($salesChannelId) ? $salesChannelId : Defaults::SALES_CHANNEL_TYPE_STOREFRONT,
             $context,
+            \is_string($languageId) ? $languageId : null,
         );
     }
 
     private function fixTranslator(TemplateMailContext $businessEvent): void
     {
+        $languageId = $businessEvent->getLanguageId() ?? $businessEvent->getContext()->getLanguageId();
         $localCode = $this->getLocaleCode(
-            $businessEvent->getContext()->getLanguageId(),
+            $languageId,
             $businessEvent->getContext(),
         );
 
+
         if ($localCode === null) {
             return;
         }
 
         $this->translator->injectSettings(
             $businessEvent->getSalesChannelId(),
-            $businessEvent->getContext()->getLanguageId(),
+            $languageId,
             $localCode,
             $businessEvent->getContext(),
         );