Levels.java

package servlets.api;

import dbProcs.Getter;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Locale;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.json.JSONArray;
import utils.ModulePlan;
import utils.Validate;

@WebServlet("/api/levels")
public class Levels extends HttpServlet {

  private static final long serialVersionUID = 1L;
  private static final Logger log = LogManager.getLogger(Levels.class);

  /** Get request just returns if the session can access the scoreboard or not */
  public void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    PrintWriter out = response.getWriter();
    out.print(getServletInfo());
    HttpSession ses = request.getSession(true);
    Locale locale = new Locale(Validate.validateLanguage(ses));
    boolean validSession = Validate.validateSession(ses);
    boolean validRequest =
        Validate.validateTokens(
            Validate.getToken(request.getCookies()), request.getParameter("csrfToken"));
    if (validSession && validRequest) {
      JSONArray theModules = new JSONArray();
      String userId = ses.getAttribute("userStamp").toString();
      String floor = new String();
      // Return All Level Information with Completed/NotCompleted Flags for this user's session
      if (ModulePlan.isIncrementalFloor()) {
        floor = "ctf";
      } else if (ModulePlan.isOpenFloor()) {
        floor = "by-type";
      } else {
        floor = "by-difficulty";
      }
      theModules = Getter.getModulesJson(userId, floor, locale);
      response.setContentType("application/json");
      out.write(theModules.toString());
    } else {
      if (!validSession) {
        log.debug("Unauthentiated Module List Call");
        response.setStatus(HttpServletResponse.SC_FORBIDDEN); // Return 403
      } else {
        log.debug("CSRF Attack Detected");
        response.setStatus(HttpServletResponse.SC_BAD_REQUEST); // Return 400
      }
    }
  }
}