Initialer Laravel Commit für BetiX

app/Http/Controllers/PromoController.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Http\Controllers\Concerns\ProxiesBackend;
+use App\Services\BackendHttpClient;
+
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Validator;
+
+class PromoController extends Controller
+{
+    use ProxiesBackend;
+
+    public function __construct(private readonly BackendHttpClient $client)
+    {
+    }
+
+    /**
+     * Apply a promo code for the authenticated user via external API.
+     * Request: { code: string }
+     */
+    public function apply(Request $request)
+    {
+        $data = Validator::make($request->all(), [
+            'code' => ['required','string','max:64'],
+        ])->validate();
+
+        $code = strtoupper(trim($data['code']));
+        try {
+            $res = $this->client->post($request, '/promos/apply', [ 'code' => $code ]);
+            if ($res->successful()) {
+                $body = $res->json() ?: [];
+                // Backward compatibility: ensure a message key exists
+                if (!isset($body['message'])) {
+                    $body['message'] = 'Promo applied successfully.';
+                }
+                // PromoControllerTest expects { success: true, message: '...' }
+                return response()->json([
+                    'success' => true,
+                    'message' => $body['message']
+                ], 200);
+            }
+            if ($res->clientError()) return $this->mapClientError($res);
+            if ($res->serverError()) return $this->mapServiceUnavailable($res);
+            return $this->mapBadGateway();
+        } catch (\Throwable $e) {
+            return $this->mapBadGateway('API server not reachable');
+        }
+    }
+}