// 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.cloudstack.quota.dao;

import java.util.Map;

import javax.ejb.Local;
import javax.inject.Inject;

import org.apache.log4j.Logger;
import org.springframework.stereotype.Component;
import org.apache.cloudstack.quota.vo.ServiceOfferingVO;

import com.cloud.event.UsageEventVO;
import com.cloud.utils.db.DB;
import com.cloud.utils.db.GenericDaoBase;
import com.cloud.utils.db.Transaction;
import com.cloud.utils.db.TransactionCallback;
import com.cloud.utils.db.TransactionLegacy;
import com.cloud.utils.db.TransactionStatus;
import com.cloud.utils.exception.CloudRuntimeException;

@Component
@Local(value = {ServiceOfferingDao.class})
@DB()
public class ServiceOfferingDaoImpl extends GenericDaoBase<ServiceOfferingVO, Long> implements ServiceOfferingDao {
    protected static final Logger s_logger = Logger.getLogger(ServiceOfferingDaoImpl.class);

    @Inject
    UserVmDetailsDao userVmDetailsDao;

    public ServiceOfferingVO findServiceOffering(final Long vmId, final long serviceOfferingId) {
        return Transaction.execute(TransactionLegacy.CLOUD_DB, new TransactionCallback<ServiceOfferingVO>() {
            @Override
            public ServiceOfferingVO doInTransaction(final TransactionStatus status) {
                ServiceOfferingVO offering = findById(serviceOfferingId);
                if (offering.isDynamic()) {
                    if (vmId == null) {
                        throw new CloudRuntimeException("missing argument vmId");
                    }
                    offering.setDynamicFlag(true);
                    Map<String, String> dynamicOffering = userVmDetailsDao.listDetailsKeyPairs(vmId);
                    return getcomputeOffering(offering, dynamicOffering);
                }
                return offering;
            }
        });
    }

    private ServiceOfferingVO getcomputeOffering(final ServiceOfferingVO serviceOffering, final Map<String, String> customParameters) {
        return Transaction.execute(TransactionLegacy.CLOUD_DB, new TransactionCallback<ServiceOfferingVO>() {
            @Override
            public ServiceOfferingVO doInTransaction(final TransactionStatus status) {
                ServiceOfferingVO dummyoffering = new ServiceOfferingVO(serviceOffering);
                dummyoffering.setDynamicFlag(true);
                if (customParameters.containsKey(UsageEventVO.DynamicParameters.cpuNumber.name())) {
                    dummyoffering.setCpu(Integer.parseInt(customParameters.get(UsageEventVO.DynamicParameters.cpuNumber.name())));
                }
                if (customParameters.containsKey(UsageEventVO.DynamicParameters.cpuSpeed.name())) {
                    dummyoffering.setSpeed(Integer.parseInt(customParameters.get(UsageEventVO.DynamicParameters.cpuSpeed.name())));
                }
                if (customParameters.containsKey(UsageEventVO.DynamicParameters.memory.name())) {
                    dummyoffering.setRamSize(Integer.parseInt(customParameters.get(UsageEventVO.DynamicParameters.memory.name())));
                }
                return dummyoffering;
            }
        });
    }

}