content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * 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.activiti.core.common.spring.identity;
  
  import java.util.List;
  import java.util.stream.Collectors;
  import org.activiti.api.runtime.shared.identity.UserGroupManager;
  import org.springframework.security.core.GrantedAuthority;
  import org.springframework.security.core.userdetails.UserDetailsService;
  
  public class ActivitiUserGroupManagerImpl implements UserGroupManager {
  
      private final UserDetailsService userDetailsService;
  
      public ActivitiUserGroupManagerImpl(UserDetailsService userDetailsService) {
          this.userDetailsService = userDetailsService;
      }
  
      @Override
      public List<String> getUserGroups(String username) {
          return userDetailsService
              .loadUserByUsername(username)
              .getAuthorities()
              .stream()
              .filter((GrantedAuthority a) -> a.getAuthority().startsWith("GROUP_"))
              .map((GrantedAuthority a) -> a.getAuthority().substring(6))
              .collect(Collectors.toList());
      }
  
      @Override
      public List<String> getUserRoles(String username) {
          return userDetailsService
              .loadUserByUsername(username)
              .getAuthorities()
              .stream()
              .filter((GrantedAuthority a) -> a.getAuthority().startsWith("ROLE_"))
              .map((GrantedAuthority a) -> a.getAuthority().substring(5))
              .collect(Collectors.toList());
      }
  
      @Override
      public List<String> getGroups() {
          return ((ExtendedInMemoryUserDetailsManager) userDetailsService).getGroups();
      }
  
      @Override
      public List<String> getUsers() {
          return ((ExtendedInMemoryUserDetailsManager) userDetailsService).getUsers();
      }
  }
  