Append DELETED to invoice number on delete action

app/Repositories/InvoiceRepository.php

@@ -83,7 +83,9 @@ class InvoiceRepository extends BaseRepository
             return;
         }
 
-        $invoice->service()->handleCancellation()->save();
+        $invoice->service()->markDeleted()->handleCancellation()->save();
+
+
 
         $invoice = parent::delete($invoice);
 

app/Services/Invoice/InvoiceService.php

@@ -24,6 +24,7 @@ use App\Services\Invoice\CreateInvitations;
 use App\Services\Invoice\GetInvoicePdf;
 use App\Services\Invoice\HandleCancellation;
 use App\Services\Invoice\HandleReversal;
+use App\Services\Invoice\MarkInvoiceDeleted;
 use App\Services\Invoice\MarkInvoicePaid;
 use App\Services\Invoice\MarkSent;
 use App\Services\Invoice\TriggeredActions;
@@ -154,6 +155,13 @@ class InvoiceService
         return $this;
     }
 
+    public function markDeleted()
+    {
+        $this->invoice = (new MarkInvoiceDeleted($this->invoice))->run();
+
+        return $this;
+    }
+
     public function reverseCancellation()
     {
         $this->invoice = (new HandleCancellation($this->invoice))->reverse();

app/Services/Invoice/MarkInvoiceDeleted.php

@@ -0,0 +1,71 @@
+<?php
+/**
+ * Invoice Ninja (https://invoiceninja.com).
+ *
+ * @link https://github.com/invoiceninja/invoiceninja source repository
+ *
+ * @copyright Copyright (c) 2020. Invoice Ninja LLC (https://invoiceninja.com)
+ *
+ * @license https://opensource.org/licenses/AAL
+ */
+
+namespace App\Services\Invoice;
+
+use App\Events\Invoice\InvoiceWasCancelled;
+use App\Events\Payment\PaymentWasCreated;
+use App\Factory\CreditFactory;
+use App\Factory\InvoiceItemFactory;
+use App\Factory\PaymentFactory;
+use App\Helpers\Invoice\InvoiceSum;
+use App\Models\Client;
+use App\Models\Invoice;
+use App\Models\Payment;
+use App\Models\Paymentable;
+use App\Services\AbstractService;
+use App\Services\Client\ClientService;
+use App\Services\Payment\PaymentService;
+use App\Utils\Ninja;
+use App\Utils\Traits\GeneratesCounter;
+
+class MarkInvoiceDeleted extends AbstractService
+{
+    use GeneratesCounter;
+
+    private $invoice;
+
+    public function __construct(Invoice $invoice)
+    {
+        $this->invoice = $invoice;
+    }
+
+    public function run()
+    {
+    	$check = false;
+    	$x=0;
+
+    	do {
+
+    		$number = $this->calcNumber($x);
+    		$check = $this->checkNumberAvailable(Invoice::class, $this->invoice, $number);
+			$x++;    	
+
+        } while (!$check);
+
+        $this->invoice->number = $number;
+
+        return $this->invoice;
+    }
+
+
+    private function calcNumber($x)
+    {
+    	if($x==0)
+			$number = $this->invoice->number . '_' . ctrans('texts.deleted');
+		else
+			$number = $this->invoice->number . '_' . ctrans('texts.deleted') . '_'. $x;
+
+		return $number;
+
+    }
+
+}

app/Utils/Traits/GeneratesCounter.php

@@ -306,6 +306,16 @@ trait GeneratesCounter
         return $number;
     }
 
+
+    /*Check if a number is available for use. */
+    public function checkNumberAvailable($class, $entity, $number) :bool
+    {
+        if($entity = $class::whereCompanyId($entity->company_id)->whereNumber($number)->withTrashed()->first())
+            return false;
+        
+        return true;
+    }
+
     /**
      * Saves counters at both the company and client level.
      *

app/Utils/Traits/Recurring/HasRecurrence.php

@@ -53,6 +53,7 @@ trait HasRecurrence
      */
     public function setDayOfMonth($date, $day_of_month)
     {
+        $data = Carbon::parse($date);
         
         $set_date = $date->copy()->setUnitNoOverflow('day', $day_of_month, 'month');