update cors, api test telegram

app/Http/Controllers/Api/Admin/Setting/SettingController.php

@@ -6,6 +6,7 @@ namespace App\Http\Controllers\Api\Admin\Setting;
 
 use App\Http\Controllers\Controller;
 use App\Http\Facade\SignRSA;
+use App\Http\Services\Telegram;
 use App\Models\Setting;
 use App\Support\Cache\CacheKey;
 use Illuminate\Http\JsonResponse;
@@ -102,6 +103,26 @@ class SettingController extends Controller
         ]);
     }
 
+    /**
+     * POST /administrator/settings/test-telegram
+     * Sends a test message using the currently saved Telegram config.
+     */
+    public function testTelegram(): JsonResponse
+    {
+        $response = (new Telegram())->SendMessage('🔔 Đây là tin nhắn test từ Portal Admin — cấu hình Telegram đang hoạt động!');
+
+        if (!$response || !$response->successful()) {
+            return response()->json([
+                'error'   => true,
+                'message' => $response
+                    ? 'Telegram trả về lỗi: ' . $response->body()
+                    : 'Chưa cấu hình đủ Bot Token / Bot ID.',
+            ], 422);
+        }
+
+        return response()->json(['error' => false, 'message' => 'Đã gửi tin nhắn test thành công.']);
+    }
+
     public function uploadMedia(Request $request): JsonResponse
     {
         $request->validate([