/**
 * Copyright (C) 2011 Brian Ferris <bdferris@onebusaway.org>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.onebusaway.presentation.impl.users;

import org.onebusaway.presentation.services.CurrentUserAware;
import org.onebusaway.users.client.model.UserBean;
import org.onebusaway.users.services.CurrentUserService;

import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;

import org.springframework.beans.factory.annotation.Autowired;

public class CurrentUserInterceptor extends AbstractInterceptor {

  private static final long serialVersionUID = 1L;

  private CurrentUserService _currentUserService;

  @Autowired
  public void setCurrentUserService(CurrentUserService userDataService) {
    _currentUserService = userDataService;
  }

  @Override
  public String intercept(ActionInvocation invocation) throws Exception {

    final Object action = invocation.getAction();

    if (action instanceof CurrentUserAware) {
      CurrentUserAware currentUserAware = (CurrentUserAware) action;
      UserBean currentUser = _currentUserService.getCurrentUser();
      if( currentUser != null)
        currentUserAware.setCurrentUser(currentUser);
    }

    return invocation.invoke();
  }
}