MOL-1285: use stock manager config

src/Resources/config/services/services.xml

@@ -79,6 +79,7 @@
 
         <service id="Kiener\MolliePayments\Service\Stock\StockManager">
             <argument type="service" id="Doctrine\DBAL\Connection"/>
+            <argument type="service" id="service_container"/>
         </service>
 
 

src/Service/Stock/StockManager.php

@@ -8,39 +8,61 @@
 use Shopware\Core\Checkout\Order\Aggregate\OrderLineItem\OrderLineItemEntity;
 use Shopware\Core\Defaults;
 use Shopware\Core\Framework\DataAbstractionLayer\Doctrine\RetryableQuery;
+use Shopware\Core\Framework\Feature;
 use Shopware\Core\Framework\Uuid\Uuid;
+use Symfony\Component\DependencyInjection\ContainerInterface;
 
 class StockManager implements StockManagerInterface
 {
+    private const STOCK_MANAGER_PARAMETER_NAME = 'shopware.stock.enable_stock_management';
     /**
      * @var Connection
      */
     private $connection;
 
+    /**
+     * @var bool
+     */
+    private $enableStockManagement;
+
 
     /**
      * @param Connection $connection
+     * @param ContainerInterface $container
      */
-    public function __construct(Connection $connection)
+    public function __construct(Connection $connection, ContainerInterface $container)
     {
         $this->connection = $connection;
+        $this->enableStockManagement = false;
+
+        /**
+         * We have to use here the container because the parameter does not exists in earlier shopware versions and we get an exceptions
+         * when activating the plugin
+         */
+        if ($container->hasParameter(self::STOCK_MANAGER_PARAMETER_NAME)) {
+            $this->enableStockManagement = (bool)$container->getParameter(self::STOCK_MANAGER_PARAMETER_NAME);
+        }
     }
 
     /**
      * @param OrderLineItemEntity $lineItem
      * @param int $quantity
      * @param string $mollieRefundID
-     * @throws \Doctrine\DBAL\Exception
      * @return void
+     * @throws \Doctrine\DBAL\Exception
      */
     public function increaseStock(OrderLineItemEntity $lineItem, int $quantity, string $mollieRefundID): void
     {
+        if ($this->isEnabled() === false) {
+            return;
+        }
+
         if ($lineItem->getPayload() === null) {
             return;
         }
 
         # check if we have a product
-        if (!isset($lineItem->getPayload()['productNumber'])) {
+        if (! isset($lineItem->getPayload()['productNumber'])) {
             return;
         }
 
@@ -59,4 +81,9 @@ public function increaseStock(OrderLineItemEntity $lineItem, int $quantity, stri
             ]
         );
     }
+
+    private function isEnabled(): bool
+    {
+        return $this->enableStockManagement && Feature::isActive('STOCK_HANDLING');
+    }
 }