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

app/Domains/Commerce/Purchase/Services/PurchaseRefundSummaryService.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Domains\Purchase\Services;
+
+use App\Domains\Tenant\Models\Tenant;
+use App\Domains\Ticket\Models\TicketRefund;
+use Illuminate\Database\Eloquent\Builder;
+
+class PurchaseRefundSummaryService
+{
+    public function totalForTenant(Tenant $tenant): string
+    {
+        $total = TicketRefund::query()
+            ->whereHas(
+                'purchaseItem.purchase',
+                fn (Builder $query): Builder => $query->where('tenant_codigo', $tenant->codigo)
+            )
+            ->sum('amount');
+
+        return number_format((float) $total, 2, '.', '');
+    }
+}