package servlets.admin.config;

import jakarta.servlet.ServletException;
import jakarta.servlet.http.Cookie;
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 org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import utils.CheatSheetStatus;
import utils.ShepherdLogManager;
import utils.Validate;

/**
 * Control class responsible for enabling cheat sheet functionality <br>
 * <br>
 * This file is part of the Security Shepherd Project.
 *
 * <p>The Security Shepherd project is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software Foundation, either
 * version 3 of the License, or (at your option) any later version.<br>
 *
 * <p>The Security Shepherd project is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU General Public License for more details.<br>
 *
 * <p>You should have received a copy of the GNU General Public License along with the Security
 * Shepherd project. If not, see <http://www.gnu.org/licenses/>.
 *
 * @author Mark Denihan
 */
public class EnableCheats extends HttpServlet {

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

  /**
   * If this functionality is validly called by an administrator, the cheat sheets will become or
   * remain unavailable.
   *
   * @param csrfToken
   */
  public void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    // Setting IpAddress To Log and taking header for original IP if forwarded from proxy
    ShepherdLogManager.setRequestIp(request.getRemoteAddr(), request.getHeader("X-Forwarded-For"));
    log.debug("*** servlets.Admin.EnableCheats ***");
    PrintWriter out = response.getWriter();
    out.print(getServletInfo());
    HttpSession ses = request.getSession(true);
    Cookie tokenCookie = Validate.getToken(request.getCookies());
    Object tokenParameter = request.getParameter("csrfToken");
    if (Validate.validateAdminSession(ses, tokenCookie, tokenParameter)) {
      ShepherdLogManager.setRequestIp(
          request.getRemoteAddr(),
          request.getHeader("X-Forwarded-For"),
          ses.getAttribute("userName").toString());
      log.debug("Current User: " + ses.getAttribute("userName").toString());
      if (Validate.validateTokens(tokenCookie, tokenParameter)) {
        // Enable for all or for admins?
        String enableFor = Validate.validateParameter(request.getParameter("enableForAll"), 16);
        if (enableFor.equalsIgnoreCase("true")) {
          CheatSheetStatus.enableForAll();
          log.debug("Cheat Sheets Enabled");
          out.write(
              "<h2 class='title'>Cheat Sheets Enabled</h2>"
                  + "<p>Cheat Sheets have been enabled for all Security Shepherd Users</p>");
        } else {
          CheatSheetStatus.enableForAdminsOnly();
          log.debug("Cheat Sheets Enabled");
          out.write(
              "<h2 class='title'>Cheat Sheets Enabled</h2>"
                  + "<p>Cheat Sheets have been enabled for Security Shepherd Administrators</p>");
        }
      }
    } else {
      out.write("<img src='css/images/loggedOutSheep.jpg'/>");
    }
    log.debug("*** END servlets.Admin.EnableCheats ***");
  }
}