/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.apache.shiro.samples.sprhib.service;
  
  import org.apache.shiro.SecurityUtils;
  import org.apache.shiro.crypto.hash.Sha256Hash;
  import org.apache.shiro.samples.sprhib.dao.UserDAO;
  import org.apache.shiro.samples.sprhib.model.User;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Service;
  import org.springframework.transaction.annotation.Transactional;
  
  import java.util.List;
  
  /**
   * Default implementation of the {@link UserService} interface.  This service implements
   * operations related to User data.
   */
  @Transactional
  @Service("userService")
  public class DefaultUserService implements UserService {
  
      private UserDAO userDAO;
  
      @Autowired
      public void setUserDAO(UserDAO userDAO) {
          this.userDAO = userDAO;
      }
  
      public User getCurrentUser() {
          final Long currentUserId = (Long) SecurityUtils.getSubject().getPrincipal();
          if( currentUserId != null ) {
              return getUser(currentUserId);
          } else {
              return null;
          }
      }
  
      public void createUser(String username, String email, String password) {
          User user = new User();
          user.setUsername(username);
          user.setEmail(email);
          user.setPassword( new Sha256Hash(password).toHex() );
          userDAO.createUser( user );
      }
  
      public List<User> getAllUsers() {
          return userDAO.getAllUsers();
      }
  
      public User getUser(Long userId) {
          return userDAO.getUser(userId);
      }
  
      public void deleteUser(Long userId) {
          userDAO.deleteUser( userId );
      }
  
      public void updateUser(User user) {
          userDAO.updateUser( user );
      }
  
  }