content: /*
   *  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.causeway.extensions.secman.delegated.shiro.realm;
  
  import java.util.Collection;
  import java.util.Collections;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Set;
  
  import org.apache.shiro.subject.PrincipalCollection;
  
  import org.apache.causeway.commons.internal.base._Casts;
  
  import org.jspecify.annotations.NonNull;
  import lombok.RequiredArgsConstructor;
  
  /**
   * @since 2.0
   */
  @RequiredArgsConstructor(staticName = "of")
  public class PrincipalCollectionForApplicationUserOnSingleRealm implements PrincipalCollection {
  
      private static final long serialVersionUID = -8778415093248238553L;
  
      @NonNull private final PrincipalForApplicationUser principal;
      @NonNull private final String realmName;
  
      @Override
      public Iterator<?> iterator() {
          return asList().iterator();
      }
  
      @Override
      public Object getPrimaryPrincipal() {
          return principal;
      }
  
      @Override
      public <T> T oneByType(Class<T> type) {
          if(type == PrincipalForApplicationUser.class) {
              return _Casts.uncheckedCast(principal);
          }
          return null;
      }
  
      @Override
      public <T> Collection<T> byType(Class<T> type) {
          if(type == PrincipalForApplicationUser.class) {
              return _Casts.uncheckedCast(asList());
          }
          return null;
      }
  
      @Override
      public List<?> asList() {
          return Collections.singletonList(principal);
      }
  
      @Override
      public Set<?> asSet() {
          return Collections.singleton(principal);
      }
  
      @Override
      public Collection<?> fromRealm(String realmName2) {
          if(realmName.equals(realmName2)) {
              return asList();
          }
          return Collections.emptyList();
      }
  
      @Override
      public Set<String> getRealmNames() {
          return Collections.singleton(realmName);
      }
  
      @Override
      public boolean isEmpty() {
          return false;
      }
  
  }
  