/*
 * 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.repo;

import jakarta.persistence.EntityManager;
import java.util.Optional;
import org.apache.syncope.core.persistence.api.dao.RoleDAO;
import org.apache.syncope.core.persistence.api.dao.UserDAO;
import org.apache.syncope.core.persistence.api.entity.Application;
import org.apache.syncope.core.persistence.api.entity.Privilege;
import org.apache.syncope.core.persistence.jpa.entity.JPAPrivilege;

public class ApplicationRepoExtImpl implements ApplicationRepoExt {

    protected final RoleDAO roleDAO;

    protected final UserDAO userDAO;

    protected final EntityManager entityManager;

    public ApplicationRepoExtImpl(
            final RoleDAO roleDAO,
            final UserDAO userDAO,
            final EntityManager entityManager) {

        this.roleDAO = roleDAO;
        this.userDAO = userDAO;
        this.entityManager = entityManager;
    }

    @Override
    public Optional<? extends Privilege> findPrivilege(final String key) {
        return Optional.ofNullable(entityManager.find(JPAPrivilege.class, key));
    }

    @Override
    public void delete(final Application application) {
        application.getPrivileges().forEach(privilege -> {
            roleDAO.findByPrivileges(privilege).
                    forEach(role -> role.getPrivileges().remove(privilege));
            userDAO.findLinkedAccountsByPrivilege(privilege).
                    forEach(account -> account.getPrivileges().remove(privilege));

            privilege.setApplication(null);
        });
        application.getPrivileges().clear();

        entityManager.remove(application);
    }
}
