$product = POS::getProductbyId($product_id, $customer_id);
         echo json_encode($product);
     }
 } elseif ($action == 'getProductFk') {
     if (isset($data['data'])) {
         $product_id = intval($data['data']['product']);
         $customer_id = intval($data['data']['customer']);
         $product = POS::getProductbyIdFk($product_id, $customer_id);
         echo json_encode($product);
     }
 } elseif ($action == 'getProductFkUsado') {
     if (isset($data['data'])) {
         $product_id = intval($data['data']['product']);
         $customer_id = intval($data['data']['customer']);
         $ticket_id = intval($data['data']['ticket']);
         $product = POS::getProductbyIdFkUsado($product_id, $customer_id, $ticket_id);
         echo json_encode($product);
     }
 } elseif ($action == 'getTicket') {
     if (sizeof($data)) {
         $ticketId = $data['data'];
         $ticket = POS::getTicket($ticketId);
         echo json_encode($ticket);
     }
 } elseif ($action == 'getFacture') {
     if (sizeof($data)) {
         $ticketId = $data['data'];
         $ticket = POS::getFacture($ticketId);
         echo json_encode($ticket);
     }
 } elseif ($action == 'getHistory') {