/*
    * 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.syncope.core.persistence.jpa.dao;
  
  import java.util.List;
  import javax.persistence.TypedQuery;
  import org.apache.syncope.common.lib.policy.DefaultAuthPolicyConf;
  import org.apache.syncope.core.persistence.api.dao.AuthModuleDAO;
  import org.apache.syncope.core.persistence.api.dao.PolicyDAO;
  import org.apache.syncope.core.persistence.api.entity.am.AuthModule;
  import org.apache.syncope.core.persistence.api.entity.policy.AuthPolicy;
  import org.apache.syncope.core.persistence.jpa.entity.am.JPAAuthModule;
  import org.springframework.transaction.annotation.Transactional;
  
  public class JPAAuthModuleDAO extends AbstractDAO<AuthModule> implements AuthModuleDAO {
  
      protected final PolicyDAO policyDAO;
  
      public JPAAuthModuleDAO(final PolicyDAO policyDAO) {
          this.policyDAO = policyDAO;
      }
  
      @Transactional(readOnly = true)
      @Override
      public AuthModule find(final String key) {
          return entityManager().find(JPAAuthModule.class, key);
      }
  
      @Transactional(readOnly = true)
      @Override
      public List<AuthModule> findAll() {
          TypedQuery<AuthModule> query = entityManager().createQuery(
                  "SELECT e FROM " + JPAAuthModule.class.getSimpleName() + " e", AuthModule.class);
          return query.getResultList();
      }
  
      @Override
      public AuthModule save(final AuthModule authModule) {
          ((JPAAuthModule) authModule).list2json();
          return entityManager().merge(authModule);
      }
  
      @Override
      public void delete(final String key) {
          AuthModule authModule = find(key);
          if (authModule == null) {
              return;
          }
  
          delete(authModule);
      }
  
      @Override
      public void delete(final AuthModule authModule) {
          policyDAO.find(AuthPolicy.class).stream().
                  filter(policy -> policy.getConf() instanceof DefaultAuthPolicyConf).
                  forEach(policy -> {
                      DefaultAuthPolicyConf conf = (DefaultAuthPolicyConf) policy.getConf();
                      if (conf.getAuthModules().remove(authModule.getKey())) {
                          policy.setConf(conf);
                          policyDAO.save(policy);
                      }
                  });
  
          entityManager().remove(authModule);
      }
  }