refactor(backend): reorganize domains into Core, Commerce, Ticketing and Shared

app/Domains/Commerce/Purchase/Services/Checkout/SourceCartService.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Domains\Purchase\Services\Checkout;
+
+use App\Domains\Cart\Models\Cart;
+use App\Domains\Purchase\Models\Purchase;
+
+class SourceCartService
+{
+    public function finalize(Purchase $purchase): void
+    {
+        $sourceCart = $this->findSourceCart($purchase);
+
+        if ($sourceCart === null || $sourceCart->trashed()) {
+            return;
+        }
+
+        $sourceCart->update([
+            'status' => 'converted',
+            'guest_token' => null,
+        ]);
+        $sourceCart->delete();
+    }
+
+    private function findSourceCart(Purchase $purchase): ?Cart
+    {
+        if ($purchase->cart_id === null) {
+            return null;
+        }
+
+        /** @var Cart|null */
+        return Cart::withTrashed()
+            ->whereKey($purchase->cart_id)
+            ->lockForUpdate()
+            ->first();
+    }
+}