package usecase.user;
   
   import common.http.ParameterConverter;
   import common.http.error.JSONError;
   import common.http.interceptor.InterceptableServlet;
   import usecase.auth.AuthorizationConstraints;
   
   import javax.inject.Inject;
   import javax.servlet.ServletException;
  import javax.servlet.annotation.WebServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import java.io.IOException;
  import java.time.Instant;
  import java.time.ZoneOffset;
  
  import static usecase.auth.AuthorizationConstraints.Types.ADMINS_ONLY;
  
  /**
   * Servlet accessibile soltanto agli amministratori per l'aggiunta dei ban.
   */
  @WebServlet("/admin/addban")
  @AuthorizationConstraints(ADMINS_ONLY)
  class AddBanServlet extends InterceptableServlet {
      @Inject private BanService service;
  
      @Override
      @JSONError
      protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
          doPost(request,response);
      }
  
      @Override
      @JSONError
      protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
          ParameterConverter converter = new ParameterConverter(request);
          Instant endDate = converter.getDateParameter("endDate")
                  .map(date -> date.atStartOfDay().toInstant(ZoneOffset.UTC)) //trasforma solo se l'optional non è vuoto
                  .orElse(null);
          int userId = converter.getIntParameter("userId").orElse(0);
          service.addBan(endDate,userId);
      }
  }