decouple document number generation

app/Services/Document/CoreDocumentNumberService.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace App\Services\Document;
+
+use App\Interfaces\Service\DocumentNumberService;
+use App\Models\Common\Contact;
+
+class CoreDocumentNumberService implements DocumentNumberService
+{
+    public function getNextDocumentNumber(string $type, ?Contact $contact): string
+    {
+        $type = $this->resolveTypeAlias($type);
+
+        $prefix = setting($type . '.number_prefix');
+        $next = (string)setting($type . '.number_next');
+        $digit = (int)setting($type . '.number_digit');
+
+        return $prefix . str_pad($next, $digit, '0', STR_PAD_LEFT);
+    }
+
+    public function increaseNextDocumentNumber(string $type, ?Contact $contact): void
+    {
+        $type = $this->resolveTypeAlias($type);
+
+        $next = setting($type . '.number_next', 1) + 1;
+
+        setting([$type . '.number_next' => $next]);
+        setting()->save();
+    }
+
+    protected function resolveTypeAlias(string $type): string
+    {
+        if ($alias = config('type.document.' . $type . '.alias')) {
+            return $alias . '.' . str_replace('-', '_', $type);
+        }
+
+        return $type;
+    }
+}