/*
    * 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.types.AnyTypeKind;
  import org.apache.syncope.core.persistence.api.dao.AnyTypeDAO;
  import org.apache.syncope.core.persistence.api.dao.RemediationDAO;
  import org.apache.syncope.core.persistence.api.entity.AnyType;
  import org.apache.syncope.core.persistence.api.entity.AnyTypeClass;
  import org.apache.syncope.core.persistence.jpa.entity.JPAAnyType;
  import org.springframework.transaction.annotation.Transactional;
  
  public class JPAAnyTypeDAO extends AbstractDAO<AnyType> implements AnyTypeDAO {
  
      protected final RemediationDAO remediationDAO;
  
      public JPAAnyTypeDAO(final RemediationDAO remediationDAO) {
          this.remediationDAO = remediationDAO;
      }
  
      @Transactional(readOnly = true)
      @Override
      public AnyType find(final String key) {
          return entityManager().find(JPAAnyType.class, key);
      }
  
      @Transactional(readOnly = true)
      @Override
      public AnyType findUser() {
          return find(AnyTypeKind.USER.name());
      }
  
      @Transactional(readOnly = true)
      @Override
      public AnyType findGroup() {
          return find(AnyTypeKind.GROUP.name());
      }
  
      @Override
      public List<AnyType> findByTypeClass(final AnyTypeClass anyTypeClass) {
          TypedQuery<AnyType> query = entityManager().createQuery(
                  "SELECT e FROM " + JPAAnyType.class.getSimpleName() + " e WHERE :anyTypeClass MEMBER OF e.classes",
                  AnyType.class);
          query.setParameter("anyTypeClass", anyTypeClass);
  
          return query.getResultList();
      }
  
      @Override
      public List<AnyType> findAll() {
          TypedQuery<AnyType> query = entityManager().createQuery(
                  "SELECT e FROM " + JPAAnyType.class.getSimpleName() + " e ", AnyType.class);
          return query.getResultList();
      }
  
      @Override
      public AnyType save(final AnyType anyType) {
          return entityManager().merge(anyType);
      }
  
      @Override
      public void delete(final String key) {
          AnyType anyType = find(key);
          if (anyType == null) {
              return;
          }
  
          if (anyType.equals(findUser()) || anyType.equals(findGroup())) {
              throw new IllegalArgumentException(key + " cannot be deleted");
          }
  
          remediationDAO.findByAnyType(anyType).forEach(remediation -> {
              remediation.setAnyType(null);
              remediationDAO.delete(remediation);
          });
  
          entityManager().remove(anyType);
      }
  }