public function chartdata()
 {
     $customers = CustomerRepository::getAll();
     $orders = OrderRepository::getAll();
     foreach ($customers as $customer) {
         $date = (string) $customer->getCreated();
         $data[$date] = $data[$date] ?? ['Customers' => 0, 'Orders' => 0];
         $data[$date]['Customers']++;
     }
     foreach ($orders as $order) {
         $date = (string) $order->getPurchaseDate();
         $data[$date] = $data[$date] ?? ['Customers' => 0, 'Orders' => 0];
         $data[$date]['Orders']++;
     }
     //format data for the map
     foreach ($data as $date => $value) {
         $formattedData[] = [$date, $value['Customers'], $value['Orders']];
     }
     sort($formattedData);
     $formattedData[0] = ['Day', 'Customer', 'Orders'];
     return $this->handleJsonResponse($formattedData);
 }