Configurations for payment modules

app/Domains/Event/Actions/UpdateEvent/UpdateEventCommand.php

@@ -2,6 +2,10 @@
 
 namespace App\Domains\Event\Actions\UpdateEvent;
 
+use App\Models\AvailablePaymentMethod;
+use App\Models\PaymentMethod;
+use App\RelationModels\EventPaymentMethods;
+
 class UpdateEventCommand {
     public UpdateEventRequest $request;
     public function __construct(UpdateEventRequest $request) {
@@ -32,7 +36,6 @@ class UpdateEventCommand {
 
         $this->request->event->resetAllowedEatingHabits();
         $this->request->event->resetContributingLocalGroups();
-        $this->request->event->resetPaymentMethods();
 
         foreach($this->request->eatingHabits as $eatingHabit) {
             $this->request->event->eatingHabits()->attach($eatingHabit);
@@ -42,13 +45,58 @@ class UpdateEventCommand {
             $this->request->event->localGroups()->attach($contributingLocalGroup);
         }
 
-        foreach($this->request->paymentMethods as $paymentMethod) {
-            $this->request->event->paymentMethods()->attach($paymentMethod);
-        }
+        $this->syncPaymentMethods();
 
         $this->request->event->save();
         $response->success = true;
 
         return $response;
     }
+
+    /**
+     * Differenzieller Sync der Zahlungsmethoden mit Snapshot-Copy-Semantik:
+     * - entfernte Methoden werden gelöscht,
+     * - neue Methoden erhalten einen Snapshot der Tenant-Config (oder eines expliziten Overrides),
+     * - bestehende Methoden behalten ihre pro-Event-Config, sofern kein Override übergeben wird.
+     */
+    private function syncPaymentMethods(): void
+    {
+        $event = $this->request->event;
+        $desiredSlugs = $this->request->paymentMethods;
+        $overrides = $this->request->paymentMethodConfigurations;
+
+        $existing = EventPaymentMethods::where('event_id', $event->id)->get()->keyBy('slug');
+
+        // Nicht mehr gewünschte Methoden entfernen.
+        foreach ($existing as $slug => $row) {
+            if (!in_array($slug, $desiredSlugs, true)) {
+                $row->delete();
+            }
+        }
+
+        // Tenant-Instanzen (für Snapshot-Kopie neuer Methoden) laden.
+        $tenantMethods = AvailablePaymentMethod::whereIn('slug', $desiredSlugs)->get()->keyBy('slug');
+
+        foreach ($desiredSlugs as $slug) {
+            $override = $overrides[$slug] ?? null;
+
+            if (isset($existing[$slug])) {
+                // Bestehende Zuweisung: Config nur bei explizitem Override anpassen, sonst unverändert lassen.
+                if ($override !== null) {
+                    $row = $existing[$slug];
+                    $row->configuration = PaymentMethod::sanitizeConfiguration($slug, $override);
+                    $row->save();
+                }
+                continue;
+            }
+
+            // Neue Zuweisung: expliziter Override oder Snapshot der Tenant-Config.
+            $snapshot = $override ?? ($tenantMethods[$slug]->configuration ?? []);
+            EventPaymentMethods::create([
+                'event_id' => $event->id,
+                'slug' => $slug,
+                'configuration' => PaymentMethod::sanitizeConfiguration($slug, $snapshot ?? []),
+            ]);
+        }
+    }
 }