Package com.agiletec.plugins.jpcontentfeedback.aps.system.services.contentfeedback

Source Code of com.agiletec.plugins.jpcontentfeedback.aps.system.services.contentfeedback.CheckVotingUtil

/*
*
* Copyright 2013 Entando S.r.l. (http://www.entando.com) All rights reserved.
*
* This file is part of Entando software.
* Entando is a free software;
* You can redistribute it and/or modify it
* under the terms of the GNU General Public License (GPL) as published by the Free Software Foundation; version 2.
*
* See the file License for the specific language governing permissions  
* and limitations under the License
*
*
*
* Copyright 2013 Entando S.r.l. (http://www.entando.com) All rights reserved.
*
*/
package com.agiletec.plugins.jpcontentfeedback.aps.system.services.contentfeedback;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;

import com.agiletec.aps.system.SystemConstants;
import com.agiletec.aps.system.services.user.UserDetails;
/**
* Classe di utilità per la gestione le operazioni di rating.
* Effettua tutti i controlli necessari per garantire l'unicità della votazione da perte del singolo
* utente. Si basa sull'impiego dei cookie, per cui, l'univocità non è garantita in caso di rimozioni
* dei cookie stessi
* @author D.Cherchi
*
*/
public class CheckVotingUtil {

  /**
   * Verifica se il contentuto è stato già votato
   * @param contentId L'identificativo del contenuto votato
   * @param request
   * @return true se l'utente ha già votato
   * @throws Throwable
   */
  public static boolean isContentVoted(String contentId, HttpServletRequest request) throws Throwable {
    boolean checkCookie = false;
    checkCookie = isVotedContentByCookie(contentId, request);
    return checkCookie;
  }

  /**
   * Verifica se il commento è stato già votato
   * @param contentId L'identificativo del commento votato
   * @param request
   * @return true se l'utente ha già votato
   * @throws Throwable
   */
  public static boolean isCommentVoted(int commentId, HttpServletRequest request) throws Throwable {
    boolean checkCookie = false;
    checkCookie = isVotedCommentByCookie(commentId, request);
    return checkCookie;
  }

  private static boolean isVotedContentByCookie(String contentId, HttpServletRequest request) {
    Cookie[] cookies = request.getCookies();
    if (null == cookies) return false;
    UserDetails currentUser = (UserDetails) request.getSession().getAttribute(SystemConstants.SESSIONPARAM_CURRENT_USER);
    String expectedCookieName = getCookieName(currentUser.getUsername(),contentId);
    String expectedCookieValue = getCookieValue(currentUser.getUsername(), contentId);
    for (int i=0; i<cookies.length; i++) {
      Cookie cookie = cookies[i];
      if (cookie.getName().equals(expectedCookieName) && cookie.getValue().equals(expectedCookieValue)) {
        return true;
      }
    }
    return false;
  }

  private static boolean isVotedCommentByCookie(int commentId, HttpServletRequest request) {
    Cookie[] cookies = request.getCookies();
    if (null == cookies) return false;
    UserDetails currentUser = (UserDetails) request.getSession().getAttribute(SystemConstants.SESSIONPARAM_CURRENT_USER);
    String expectedCookieName = getCookieName(currentUser.getUsername(), commentId);
    String expectedCookieValue = getCookieValue(currentUser.getUsername(), commentId);
    for (int i=0; i<cookies.length; i++) {
      Cookie cookie = cookies[i];
      if (cookie.getName().equals(expectedCookieName) && cookie.getValue().equals(expectedCookieValue)) {
        return true;
      }
    }
    return false;
  }


  public static String getCookieName(String username, String contentId) {
    return "jpcontentfeddback_" + username + "_" + contentId + "_NAME";
  }
  public static String getCookieValue(String username, String contentId) {
    return "jpcontentfeddback_" + username + "_" + contentId + "_VALUE";
  }
  public static String getCookieName(String username, int commentId) {
    return "jpcontentfeddback_" + username + "_" + commentId + "_NAME";
  }
  public static String getCookieValue(String username, int commentId) {
    return "jpcontentfeddback_" + username + "_" + commentId + "_VALUE";
  }

}
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