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/*
 * Copyright © 2016-2017 European Support Limited
 *
 * Licensed 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.openecomp.sdc.vendorlicense.dao.impl.zusammen;

import static org.openecomp.core.zusammen.api.ZusammenUtil.buildElement;
import static org.openecomp.core.zusammen.api.ZusammenUtil.buildStructuralElement;
import static org.openecomp.core.zusammen.api.ZusammenUtil.createSessionContext;

import com.amdocs.zusammen.adaptor.inbound.api.types.item.Element;
import com.amdocs.zusammen.adaptor.inbound.api.types.item.ElementInfo;
import com.amdocs.zusammen.adaptor.inbound.api.types.item.ZusammenElement;
import com.amdocs.zusammen.datatypes.Id;
import com.amdocs.zusammen.datatypes.SessionContext;
import com.amdocs.zusammen.datatypes.item.Action;
import com.amdocs.zusammen.datatypes.item.ElementContext;
import com.amdocs.zusammen.datatypes.item.Info;
import java.util.Collection;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;
import lombok.AllArgsConstructor;
import org.openecomp.core.zusammen.api.ZusammenAdaptor;
import org.openecomp.sdc.datatypes.model.ElementType;
import org.openecomp.sdc.vendorlicense.dao.LicenseAgreementDao;
import org.openecomp.sdc.vendorlicense.dao.impl.zusammen.convertor.ElementToLicenseAgreementConvertor;
import org.openecomp.sdc.vendorlicense.dao.types.LicenseAgreementEntity;
import org.openecomp.types.ElementPropertyName;

@AllArgsConstructor
public class LicenseAgreementDaoZusammenImpl implements LicenseAgreementDao {

    private ZusammenAdaptor zusammenAdaptor;

    @Override
    public void registerVersioning(String versionableEntityType) {
        //no need
    }

    @Override
    public void create(LicenseAgreementEntity licenseAgreement) {
        ZusammenElement licenseAgreementElement = buildLicenseAgreementElement(licenseAgreement, Action.CREATE);
        ZusammenElement licenseAgreementsElement = buildStructuralElement(ElementType.LicenseAgreements, Action.IGNORE);
        licenseAgreementsElement.addSubElement(licenseAgreementElement);
        SessionContext context = createSessionContext();
        Element licenseAgreementsSavedElement = zusammenAdaptor
            .saveElement(context, new ElementContext(licenseAgreement.getVendorLicenseModelId(), licenseAgreement.getVersion().getId()),
                licenseAgreementsElement, "Create license agreement");
        licenseAgreement.setId(licenseAgreementsSavedElement.getSubElements().iterator().next().getElementId().getValue());
    }

    @Override
    public void update(LicenseAgreementEntity licenseAgreement) {
        ZusammenElement licenseAgreementElement = buildLicenseAgreementElement(licenseAgreement, Action.UPDATE);
        SessionContext context = createSessionContext();
        zusammenAdaptor.saveElement(context, new ElementContext(licenseAgreement.getVendorLicenseModelId(), licenseAgreement.getVersion().getId()),
            licenseAgreementElement, String.format("Update license agreement with id %s", licenseAgreement.getId()));
    }

    @Override
    public LicenseAgreementEntity get(LicenseAgreementEntity licenseAgreement) {
        SessionContext context = createSessionContext();
        ElementContext elementContext = new ElementContext(licenseAgreement.getVendorLicenseModelId(), licenseAgreement.getVersion().getId());
        ElementToLicenseAgreementConvertor convertor = new ElementToLicenseAgreementConvertor();
        return zusammenAdaptor.getElementInfo(context, elementContext, new Id(licenseAgreement.getId())).map(elementInfo -> {
            LicenseAgreementEntity entity = convertor.convert(elementInfo);
            entity.setVendorLicenseModelId(licenseAgreement.getVendorLicenseModelId());
            entity.setVersion(licenseAgreement.getVersion());
            return entity;
        }).orElse(null);
    }

    @Override
    public void delete(LicenseAgreementEntity licenseAgreement) {
        ZusammenElement zusammenElement = buildElement(new Id(licenseAgreement.getId()), Action.DELETE);
        SessionContext context = createSessionContext();
        ElementContext elementContext = new ElementContext(licenseAgreement.getVendorLicenseModelId(), licenseAgreement.getVersion().getId());
        zusammenAdaptor.saveElement(context, elementContext, zusammenElement, "delete license agreement. id:" + licenseAgreement.getId() + ".");
    }

    @Override
    public Collection<LicenseAgreementEntity> list(LicenseAgreementEntity licenseAgreement) {
        SessionContext context = createSessionContext();
        ElementContext elementContext = new ElementContext(licenseAgreement.getVendorLicenseModelId(), licenseAgreement.getVersion().getId());
        ElementToLicenseAgreementConvertor convertor = new ElementToLicenseAgreementConvertor();
        return zusammenAdaptor.listElementsByName(context, elementContext, null, ElementType.LicenseAgreements.name()).stream().map(elementInfo -> {
            LicenseAgreementEntity entity = convertor.convert(elementInfo);
            entity.setVendorLicenseModelId(licenseAgreement.getVendorLicenseModelId());
            entity.setVersion(licenseAgreement.getVersion());
            return entity;
        }).collect(Collectors.toList());
    }

    @Override
    public long count(LicenseAgreementEntity licenseAgreement) {
        SessionContext context = createSessionContext();
        ElementContext elementContext = new ElementContext(licenseAgreement.getVendorLicenseModelId(), licenseAgreement.getVersion().getId());
        return zusammenAdaptor.listElementsByName(context, elementContext, null, ElementType.LicenseAgreements.name()).size();
    }

    @Override
    public void deleteAll(LicenseAgreementEntity entity) {
        //not supported
    }

    @Override
    public void removeFeatureGroup(LicenseAgreementEntity licenseAgreement, String featureGroupId) {
        SessionContext context = createSessionContext();
        ElementContext elementContext = new ElementContext(licenseAgreement.getVendorLicenseModelId(), licenseAgreement.getVersion().getId());
        Optional<ElementInfo> elementInfo = zusammenAdaptor.getElementInfo(context, elementContext, new Id(licenseAgreement.getId()));
        if (elementInfo.isPresent()) {
            ZusammenElement zusammenElement = VlmZusammenUtil.getZusammenElement(elementInfo.get());
            zusammenElement.setAction(Action.UPDATE);
            zusammenElement.setRelations(
                elementInfo.get().getRelations().stream().filter(relation -> !featureGroupId.equals(relation.getEdge2().getElementId().getValue()))
                    .collect(Collectors.toList()));
            zusammenAdaptor.saveElement(context, elementContext, zusammenElement, "remove feature group");
        }
    }

    @Override
    public void updateColumnsAndDeltaFeatureGroupIds(LicenseAgreementEntity licenseAgreement, Set<String> addedFeatureGroupIds,
                                                     Set<String> removedFeatureGroupIds) {
        ZusammenElement licenseAgreementElement = buildLicenseAgreementElement(licenseAgreement, Action.UPDATE);
        SessionContext context = createSessionContext();
        ElementContext elementContext = new ElementContext(licenseAgreement.getVendorLicenseModelId(), licenseAgreement.getVersion().getId());
        ElementToLicenseAgreementConvertor convertor = new ElementToLicenseAgreementConvertor();
        Optional<ElementInfo> elementInfo = zusammenAdaptor.getElementInfo(context, elementContext, new Id(licenseAgreement.getId()));
        if (elementInfo.isPresent()) {
            LicenseAgreementEntity currentLicenseAgreement = convertor.convert(elementInfo.get());
            currentLicenseAgreement.setVendorLicenseModelId(licenseAgreement.getVendorLicenseModelId());
            currentLicenseAgreement.setVersion(licenseAgreement.getVersion());
            if (!(removedFeatureGroupIds == null)) {
                currentLicenseAgreement.getFeatureGroupIds().removeAll(removedFeatureGroupIds);
            }
            if (!(addedFeatureGroupIds == null)) {
                currentLicenseAgreement.getFeatureGroupIds().addAll(addedFeatureGroupIds);
            }
            licenseAgreementElement.setRelations(currentLicenseAgreement.getFeatureGroupIds().stream()
                .map(relation -> VlmZusammenUtil.createRelation(RelationType.LicenseAgreementToFeatureGroup, relation)).collect(Collectors.toList()));
            zusammenAdaptor.saveElement(context, elementContext, licenseAgreementElement, "update license agreement");
        }
    }

    private ZusammenElement buildLicenseAgreementElement(LicenseAgreementEntity licenseAgreement, Action action) {
        ZusammenElement licenseAgreementElement = buildElement(licenseAgreement.getId() == null ? null : new Id(licenseAgreement.getId()), action);
        Info info = new Info();
        info.setName(licenseAgreement.getName());
        info.setDescription(licenseAgreement.getDescription());
        info.addProperty(ElementPropertyName.elementType.name(), ElementType.LicenseAgreement);
        info.addProperty("licenseTerm", licenseAgreement.getLicenseTerm());
        info.addProperty("requirementsAndConstrains", licenseAgreement.getRequirementsAndConstrains());
        licenseAgreementElement.setInfo(info);
        if (licenseAgreement.getFeatureGroupIds() != null && !licenseAgreement.getFeatureGroupIds().isEmpty()) {
            licenseAgreementElement.setRelations(licenseAgreement.getFeatureGroupIds().stream()
                .map(rel -> VlmZusammenUtil.createRelation(RelationType.LicenseAgreementToFeatureGroup, rel)).collect(Collectors.toList()));
        }
        return licenseAgreementElement;
    }
}