PWA-806: Localize emails sent through GraphQL application

Author: davemacaulay

app/code/Magento/GraphQl/Plugin/TranslationLoader.php

@@ -41,7 +41,4 @@
             </argument>
         </arguments>
     </type>
-    <type name="Magento\Framework\Phrase">
-        <plugin name="graphQlLocalizationPhrasePlugin" type="Magento\GraphQl\Plugin\TranslationLoader" />
-    </type>
 </config>

app/code/Magento/GraphQl/etc/graphql/di.xml

@@ -7,6 +7,10 @@
 
 namespace Magento\StoreGraphQl\Controller\HttpHeaderProcessor;
 
+use Magento\Framework\App\AreaInterface;
+use Magento\Framework\App\AreaList;
+use Magento\Framework\App\ObjectManager;
+use Magento\Framework\App\State;
 use Magento\GraphQl\Controller\HttpHeaderProcessorInterface;
 use Magento\Store\Model\StoreManagerInterface;
 use Magento\Framework\App\Http\Context as HttpContext;
@@ -32,19 +36,35 @@ class StoreProcessor implements HttpHeaderProcessorInterface
      */
     private $storeCookieManager;
 
+    /**
+     * @var AreaList
+     */
+    private $areaList;
+
+    /**
+     * @var State
+     */
+    private $appState;
+
     /**
      * @param StoreManagerInterface $storeManager
      * @param HttpContext $httpContext
      * @param StoreCookieManagerInterface $storeCookieManager
+     * @param AreaList $areaList
+     * @param State $appState
      */
     public function __construct(
         StoreManagerInterface $storeManager,
         HttpContext $httpContext,
-        StoreCookieManagerInterface $storeCookieManager
+        StoreCookieManagerInterface $storeCookieManager,
+        AreaList $areaList = null,
+        State $appState = null
     ) {
         $this->storeManager = $storeManager;
         $this->httpContext = $httpContext;
         $this->storeCookieManager = $storeCookieManager;
+        $this->areaList = $areaList ?? ObjectManager::getInstance()->get(AreaList::class);
+        $this->appState = $appState ?? ObjectManager::getInstance()->get(State::class);
     }
 
     /**
@@ -67,6 +87,10 @@ public function processHeaderValue(string $headerValue) : void
             $this->storeManager->setCurrentStore($storeCode);
             $this->updateContext($storeCode);
         }
+
+        // Load translations for the app
+        $area = $this->areaList->getArea($this->appState->getAreaCode());
+        $area->load(AreaInterface::PART_TRANSLATE);
     }
 
     /**

app/code/Magento/StoreGraphQl/Controller/HttpHeaderProcessor/StoreProcessor.php

@@ -3,19 +3,15 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-
 declare(strict_types=1);
 
-use Magento\Framework\App\ObjectManager;
-use Magento\Framework\Phrase;
-
 /**
  * Create value-object \Magento\Framework\Phrase
  *
  * @SuppressWarnings(PHPMD.ShortMethodName)
  * phpcs:disable Squiz.Functions.GlobalFunction
  * @param array $argc
- * @return Phrase
+ * @return \Magento\Framework\Phrase
  */
 function __(...$argc)
 {
@@ -24,11 +20,5 @@ function __(...$argc)
         $argc = $argc[0];
     }
 
-    return ObjectManager::getInstance()->create(
-        Phrase::class,
-        [
-            'text' => $text,
-            'arguments' => $argc
-        ]
-    );
+    return new \Magento\Framework\Phrase($text, $argc);
 }