public function getLastAppointment($patient_id)
 {
     if (!Patient::isPatient() && !HospitalEmployee::isDoctor() && !HospitalEmployee::isStaff()) {
         return response()->json(["success" => false, "error" => 'notlogin or notvalid']);
     }
     return response()->json(["success" => true, "data" => Appointment::getLastAppointment($patient_id)]);
 }