WIP [TASK] Readd BE actions for orders

The way to add actions in the docheader changed
with https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/11.5/Deprecation-95164-ExtbackendBackendTemplateView.html
which needs adaptions.

Todo:
* Add actions for invoices and delivery
* Test actions (needs EXT:cart_pdf in v12 compatible version)
* Remove superfluous template
  `Private/Partials/Backend/Order/Show/Actions`

Classes/Controller/Backend/Order/OrderController.php

@@ -10,25 +10,33 @@
  * For the full copyright and license information, please read the
  * LICENSE file that was distributed with this source code.
  */
+
 use Extcode\Cart\Controller\Backend\ActionController;
 use Extcode\Cart\Domain\Model\Cart\Cart;
 use Extcode\Cart\Domain\Model\Order\Item;
 use Extcode\Cart\Domain\Repository\Order\ItemRepository;
 use Extcode\Cart\Event\Order\NumberGeneratorEvent;
 use Psr\Http\Message\ResponseInterface;
+use TYPO3\CMS\Backend\Template\Components\ButtonBar;
+use TYPO3\CMS\Backend\Template\Components\Buttons\DropDown\DropDownItem;
 use TYPO3\CMS\Backend\Template\ModuleTemplate;
 use TYPO3\CMS\Backend\Template\ModuleTemplateFactory;
+use TYPO3\CMS\Core\Imaging\Icon;
 use TYPO3\CMS\Core\Imaging\IconFactory;
+use TYPO3\CMS\Core\Localization\LanguageService;
 use TYPO3\CMS\Core\Pagination\SimplePagination;
 use TYPO3\CMS\Core\Type\ContextualFeedbackSeverity;
 use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Extbase\Annotation\IgnoreValidation;
 use TYPO3\CMS\Extbase\Pagination\QueryResultPaginator;
 use TYPO3\CMS\Extbase\Persistence\Generic\PersistenceManager;
 use TYPO3\CMS\Extbase\Utility\LocalizationUtility;
 
 class OrderController extends ActionController
 {
+    private const LANG_FILE = 'LLL:EXT:cart/Resources/Private/Language/locallang.xlf:';
+
     protected PersistenceManager $persistenceManager;
 
     private ModuleTemplate $moduleTemplate;
@@ -124,6 +132,7 @@ public function exportAction(): ResponseInterface
     public function showAction(Item $orderItem): ResponseInterface
     {
         $this->moduleTemplate = $this->moduleTemplateFactory->create($this->request);
+        $this->setShowDocHeader($orderItem);
 
         $this->moduleTemplate->assign('settings', $this->settings);
         $this->moduleTemplate->assign('orderItem', $orderItem);
@@ -154,7 +163,67 @@ public function showAction(Item $orderItem): ResponseInterface
         return $this->moduleTemplate->renderResponse('Show');
     }
 
-    public function generateNumberAction(Item $orderItem, string $numberType): void
+    private function setShowDocHeader(Item $orderItem)
+    {
+        $buttonBar = $this->moduleTemplate->getDocHeaderComponent()->getButtonBar();
+
+        $buttons = [];
+
+        if (!$orderItem->getOrderNumber()) {
+            $buttons[] = [
+                [
+                    'link' => $this->uriBuilder->reset()->setRequest($this->request)
+                        ->uriFor(
+                            'generateNumber',
+                            ['orderItem' => $orderItem, 'numberType' => 'order']
+                        ),
+                    'title' => 'tx_cart.controller.order.action.generateOrderNumber',
+                    'icon' => 'actions-duplicates',
+                ],
+
+            ];
+        }
+        if (ExtensionManagementUtility::isLoaded('cart_pdf')) {
+            $buttons[] = [
+                'link' => $this->uriBuilder->reset()->setRequest($this->request)
+                    ->uriFor(
+                        'create',
+                        ['orderItem' => $orderItem, 'pdfType' => 'order'],
+                        'Backend\Order\Document'
+                    ),
+                'title' => 'tx_cart.controller.order.action.generateOrderDocument',
+                'icon' => 'actions-file-pdf',
+            ];
+        }
+
+        if ($orderItem->getOrderPdfs()->current()) {
+            $buttons[] = [
+                'link' => $this->uriBuilder->reset()->setRequest($this->request)
+                    ->uriFor(
+                        'download',
+                        ['orderItem' => $orderItem, 'pdfType' => 'order'],
+                        'Backend\Order\Document'
+                    ),
+                'title' => 'tx_cart.controller.order.action.downloadOrderDocument',
+                'icon' => 'actions-file-t3d-download',
+            ];
+        }
+
+        foreach ($buttons as $button) {
+            $title = $this->getLanguageService()->sL(self::LANG_FILE . $button['title']);
+            $icon = $this->iconFactory->getIcon($button['icon'], Icon::SIZE_SMALL);
+
+            $viewButton = $buttonBar->makeLinkButton()
+                ->setHref($button['link'])
+                ->setTitle($title)
+                ->setShowLabelText(true)
+                ->setIcon($icon);
+            $buttonBar->addButton($viewButton, ButtonBar::BUTTON_POSITION_LEFT, 1);
+        }
+
+    }
+
+    public function generateNumberAction(Item $orderItem, string $numberType): ResponseInterface
     {
         $getNumber = 'get' . ucfirst($numberType) . 'Number';
 
@@ -182,7 +251,7 @@ public function generateNumberAction(Item $orderItem, string $numberType): void
             $this->addFlashMessage($msg, '', ContextualFeedbackSeverity::ERROR);
         }
 
-        $this->redirect('show', 'Backend\Order\Order', null, ['orderItem' => $orderItem]);
+        return $this->redirect('show', 'Backend\Order\Order', null, ['orderItem' => $orderItem]);
     }
 
     public function getPaymentStatus(): array
@@ -234,4 +303,10 @@ public function getShippingStatus(): array
         }
         return $shippingStatusArray;
     }
+
+    protected function getLanguageService(): LanguageService
+    {
+        return $GLOBALS['LANG'];
+    }
 }
+