/*
    * 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.Collection;
  import java.util.List;
  import javax.persistence.TypedQuery;
  import org.apache.syncope.core.persistence.api.dao.DerSchemaDAO;
  import org.apache.syncope.core.persistence.api.dao.ExternalResourceDAO;
  import org.apache.syncope.core.persistence.api.entity.AnyTypeClass;
  import org.apache.syncope.core.persistence.api.entity.DerSchema;
  import org.apache.syncope.core.persistence.jpa.entity.JPADerSchema;
  
  public class JPADerSchemaDAO extends AbstractDAO<DerSchema> implements DerSchemaDAO {
  
      protected final ExternalResourceDAO resourceDAO;
  
      public JPADerSchemaDAO(final ExternalResourceDAO resourceDAO) {
          this.resourceDAO = resourceDAO;
      }
  
      @Override
      public DerSchema find(final String key) {
          return entityManager().find(JPADerSchema.class, key);
      }
  
      @Override
      public List<DerSchema> findByAnyTypeClasses(final Collection<AnyTypeClass> anyTypeClasses) {
          StringBuilder queryString = new StringBuilder("SELECT e FROM ").
                  append(JPADerSchema.class.getSimpleName()).
                  append(" e WHERE ");
          anyTypeClasses.forEach(anyTypeClass -> queryString.
                  append("e.anyTypeClass.id='").
                  append(anyTypeClass.getKey()).append("' OR "));
  
          TypedQuery<DerSchema> query = entityManager().createQuery(
                  queryString.substring(0, queryString.length() - 4), DerSchema.class);
  
          return query.getResultList();
      }
  
      @Override
      public List<DerSchema> findByKeyword(final String keyword) {
          TypedQuery<DerSchema> query = entityManager().createQuery(
                  "SELECT e FROM " + JPADerSchema.class.getSimpleName() + " e"
                  + " WHERE e.id LIKE :keyword", DerSchema.class);
          query.setParameter("keyword", keyword);
          return query.getResultList();
      }
  
      @Override
      public List<DerSchema> findAll() {
          TypedQuery<DerSchema> query = entityManager().createQuery(
                  "SELECT e FROM " + JPADerSchema.class.getSimpleName() + " e", DerSchema.class);
          return query.getResultList();
      }
  
      @Override
      public DerSchema save(final DerSchema schema) {
          ((JPADerSchema) schema).map2json();
          return entityManager().merge(schema);
      }
  
      @Override
      public void delete(final String key) {
          final DerSchema schema = find(key);
          if (schema == null) {
              return;
          }
  
          resourceDAO.deleteMapping(key);
  
          if (schema.getAnyTypeClass() != null) {
              schema.getAnyTypeClass().getDerSchemas().remove(schema);
          }
  
          entityManager().remove(schema);
      }
  }