formatting fixes, bug fixes and support impl.

Controller/ApiController.php

@@ -277,8 +277,12 @@ final class ApiController extends Controller
             . $bill->createdAt->format('m') . '/'
             . $bill->createdAt->format('d') . '/';
 
-        if (!\is_dir($pdfDir)) {
+        $status = !\is_dir($pdfDir) ? \mkdir($pdfDir, 0755, true) : true;
-            \mkdir($pdfDir, 0755, true);
+        if ($status === false) {
+            $response->set($request->uri->__toString(), new FormValidation($status));
+            $response->header->status = RequestStatusCode::R_400;
+
+            return;
         }
 
         $view = new View($this->app->l11nManager, $request, $response);

Models/BillStatus.php

@@ -17,7 +17,7 @@ namespace Modules\Billing\Models;
 use phpOMS\Stdlib\Base\Enum;
 
 /**
- * Task type enum.
+ * Bill status enum.
  *
  * @package Modules\Billing\Models
  * @license OMS License 1.0

Models/BillTransferType.php

@@ -17,7 +17,7 @@ namespace Modules\Billing\Models;
 use phpOMS\Stdlib\Base\Enum;
 
 /**
- * Task type enum.
+ * Bill transfer type enum.
  *
  * @package Modules\Billing\Models
  * @license OMS License 1.0

Models/BillType.php

@@ -17,7 +17,7 @@ namespace Modules\Billing\Models;
 use phpOMS\Localization\ISO639x1Enum;
 
 /**
- * Task type enum.
+ * Bill type enum.
  *
  * @package Modules\Billing\Models
  * @license OMS License 1.0
@@ -85,7 +85,7 @@ BillTypeL11n $l11n;
     {
         if ($l11n instanceof BillTypeL11n) {
             $this->l11n = $l11n;
-        } elseif ($this->l11n instanceof BillTypeL11n) {
+        } elseif (isset($this->l11n) && $this->l11n instanceof BillTypeL11n) {
             $this->l11n->name = $l11n;
         } else {
             $this->l11n       = new BillTypeL11n();

Models/NullBill.php

@@ -4,7 +4,7 @@
  *
  * PHP Version 8.0
  *
- * @package   phpOMS\Account
+ * @package   Modules\Billing\Models
  * @copyright Dennis Eichhorn
  * @license   OMS License 1.0
  * @version   1.0.0
@@ -15,9 +15,9 @@ declare(strict_types=1);
 namespace Modules\Billing\Models;
 
 /**
- * Null account class.
+ * Null bill class.
  *
- * @package phpOMS\Account
+ * @package Modules\Billing\Models
  * @license OMS License 1.0
  * @link    https://orange-management.org
  * @since   1.0.0

Models/NullBillElement.php

@@ -0,0 +1,39 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 8.0
+ *
+ * @package   Modules\Billing\Models
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 1.0
+ * @version   1.0.0
+ * @link      https://orange-management.org
+ */
+declare(strict_types=1);
+
+namespace Modules\Billing\Models;
+
+/**
+ * Null bill element class.
+ *
+ * @package Modules\Billing\Models
+ * @license OMS License 1.0
+ * @link    https://orange-management.org
+ * @since   1.0.0
+ */
+final class NullBillElement extends BillElement
+{
+    /**
+     * Constructor
+     *
+     * @param int $id Model id
+     *
+     * @since 1.0.0
+     */
+    public function __construct(int $id = 0)
+    {
+        $this->id = $id;
+        parent::__construct();
+    }
+}

Models/NullBillType.php

@@ -15,7 +15,7 @@ declare(strict_types=1);
 namespace Modules\Billing\Models;
 
 /**
- * Null account class.
+ * Null bill type class.
  *
  * @package Modules\Billing\Models
  * @license OMS License 1.0