refactor: mail settings locale

locale.xml

@@ -488,6 +488,45 @@
             <en><![CDATA[This text is displayed in every invoice as additional text.]]></en>
         </locale>
 
+        <locale name="invoice.send.mail.message.description" html="true">
+            <de><![CDATA[
+            <p>Inhalt der Rechnungsmail. Verfügbare Variablen:</p>
+            <ul>
+                <li>invoiceId</li>
+                <li>user</li>
+                <li>customerName</li>
+                <li>contactPerson</li>
+                <li>address</li>
+                <li>company</li>
+            </ul>
+            ]]></de>
+            <en><![CDATA[
+            <p>Content of the Invoice e-mail. Available variables:</p>
+            <ul>
+                <li>invoiceId</li>
+                <li>user</li>
+                <li>customerName</li>
+                <li>contactPerson</li>
+                <li>address</li>
+                <li>company</li>
+            </ul>
+            ]]></en>
+        </locale>
+        <locale name="invoice.send.mail.subject.description" html="true">
+            <de><![CDATA[
+            <p>Betreff der Rechnungsmail. Verfügbare Variablen:</p>
+            <ul>
+            <li>invoiceId</li>
+            </ul>
+            ]]></de>
+            <en><![CDATA[
+            <p>Subject of the invoice mail. Available variables:</p>
+            <ul>
+            <li>invoiceId</li>
+            </ul>
+            ]]></en>
+        </locale>
+
     </groups>
 
     <groups name="quiqqer/invoice" datatype="js">
@@ -1318,6 +1357,14 @@
             <de><![CDATA[Ihre Rechnung - [invoiceId]]]></de>
             <en><![CDATA[Your Invoice - [invoiceId]]]></en>
         </locale>
+        <locale name="invoice.send.mail.title">
+            <de><![CDATA[Rechnungsmail]]></de>
+            <en><![CDATA[Invoice e-mail]]></en>
+        </locale>
+        <locale name="invoice.send.mail.description">
+            <de><![CDATA[]]></de>
+            <en><![CDATA[]]></en>
+        </locale>
         <locale name="invoice.send.mail.message">
             <de><![CDATA[
             <h1>Hallo [user],</h1>
@@ -1357,6 +1404,7 @@
             </p>
             ]]></en>
         </locale>
+
         <locale name="invoice.cancelled.send.mail.subject">
             <de><![CDATA[Ihre Storno-Rechnung - [invoiceId]]]></de>
             <en><![CDATA[Your Cancelletion Invoice - [invoiceId]]]></en>

src/QUI/ERP/Accounting/Invoice/ErpProvider.php

@@ -6,9 +6,9 @@
 
 namespace QUI\ERP\Accounting\Invoice;
 
+use QUI;
 use QUI\Controls\Sitemap\Map;
 use QUI\Controls\Sitemap\Item;
-
 use QUI\ERP\Api\AbstractErpProvider;
 
 /**
@@ -85,4 +85,22 @@ public static function getNumberRanges()
             new NumberRanges\TemporaryInvoice()
         ];
     }
+
+    /**
+     * @return array[]
+     */
+    public static function getMailLocale(): array
+    {
+        return [
+            [
+                'title'       => QUI::getLocale()->get('quiqqer/invoice', 'invoice.send.mail.title'),
+                'description' => QUI::getLocale()->get('quiqqer/invoice', 'invoice.send.mail.description'),
+                'subject'     => ['quiqqer/invoice', 'invoice.send.mail.subject'],
+                'content'     => ['quiqqer/invoice', 'invoice.send.mail.message'],
+
+                'subject.description' => ['quiqqer/invoice', 'invoice.send.mail.subject.description'],
+                'content.description' => ['quiqqer/invoice', 'invoice.send.mail.message.description']
+            ]
+        ];
+    }
 }

src/QUI/ERP/Accounting/Invoice/Output/OutputProviderInvoice.php

@@ -270,11 +270,20 @@ public static function getMailBody($entityId)
             $user = $Customer->getAddress()->getName();
         }
 
+        // contact person
+        $contactPerson = $Invoice->getAttribute('contact_person');
+
+        if (empty($contactPerson)) {
+            $contactPerson = $user;
+        }
+
         return $Customer->getLocale()->get('quiqqer/invoice', 'invoice.send.mail.message', [
-            'invoiceId' => $Invoice->getId(),
-            'user'      => $user,
-            'address'   => $Customer->getAddress()->render(),
-            'company'   => self::getCompanyName()
+            'invoiceId'     => $Invoice->getId(),
+            'user'          => $user,
+            'customerName'  => $user,
+            'contactPerson' => $contactPerson,
+            'address'       => $Customer->getAddress()->render(),
+            'company'       => self::getCompanyName()
         ]);
     }