/**
 * This file is part of the Meeds project (https://meeds.io/).
 *
 * Copyright (C) 2020 - 2023 Meeds Association contact@meeds.io
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 * This program 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
 * Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package org.exoplatform.webui.ext.filter.impl;

import java.util.List;
import java.util.Map;

import org.exoplatform.container.ExoContainer;
import org.exoplatform.container.ExoContainerContext;
import org.exoplatform.portal.config.UserACL;
import org.exoplatform.services.security.ConversationState;
import org.exoplatform.webui.ext.filter.UIExtensionFilter;
import org.exoplatform.webui.ext.filter.UIExtensionFilterType;

/**
 * This filter is used to add some access permissions to a specific extension
 * 
 * Created by The eXo Platform SAS
 * Author : eXoPlatform
 *          nicolas.filotto@exoplatform.com
 * 14 mai 2009  
 */
public class UserACLFilter implements UIExtensionFilter {

  /**
   * The list of all access permissions allowed
   */
  protected List<String> permissions;
    
  /**
   * {@inheritDoc}
   */
  public boolean accept(Map<String, Object> context) throws Exception {
    if (permissions == null || permissions.isEmpty()) {
      return true;
    }
    ExoContainer container = ExoContainerContext.getCurrentContainer();
    UserACL userACL = (UserACL) container.getComponentInstance(UserACL.class);
    for (int i = 0, length = permissions.size(); i < length; i++) {
      String permission = permissions.get(i);
      if (userACL.hasPermission(ConversationState.getCurrent().getIdentity(), permission)) {
        return true;
      }
    }
    return false;
  }

  /**
   * {@inheritDoc}
   */
  public UIExtensionFilterType getType() {
    return UIExtensionFilterType.MANDATORY;
  }

  /**
   * {@inheritDoc}
   */
  public void onDeny(Map<String, Object> context) throws Exception {}
}
