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/*
 * Copyright © 2016-2018 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.translator.datatypes.heattotosca.unifiedmodel.consolidation;

import org.onap.sdc.tosca.datatypes.model.RequirementAssignment;
import org.onap.sdc.tosca.datatypes.model.ServiceTemplate;
import org.openecomp.core.utilities.file.FileUtils;
import org.openecomp.sdc.common.errors.CoreException;
import org.openecomp.sdc.heat.datatypes.model.HeatOrchestrationTemplate;
import org.openecomp.sdc.tosca.services.ToscaUtil;
import org.openecomp.sdc.translator.datatypes.heattotosca.TranslationContext;
import org.openecomp.sdc.translator.datatypes.heattotosca.to.TranslateTo;
import org.openecomp.sdc.translator.services.heattotosca.errors.DuplicateResourceIdsInDifferentFilesErrorBuilder;
import org.openecomp.sdc.translator.services.heattotosca.impl.functiontranslation.FunctionTranslator;


import java.util.Objects;

public class NestedConsolidationDataHandler implements ConsolidationDataHandler {

    private final NestedConsolidationData nestedConsolidationData;

    public NestedConsolidationDataHandler(NestedConsolidationData nestedConsolidationData) {
        this.nestedConsolidationData = nestedConsolidationData;
    }

    @Override
    public void addNodesConnectedOut(TranslateTo translateTo, String nodeTemplateId, String requirementId,
                                            RequirementAssignment requirementAssignment) {
        EntityConsolidationData entityConsolidationData =
                getNestedTemplateConsolidationData(translateTo, translateTo.getHeatFileName(),
                        translateTo.getTranslatedId());

        if (Objects.nonNull(entityConsolidationData)) {
            entityConsolidationData.addNodesConnectedOut(nodeTemplateId, requirementId, requirementAssignment);
        }
    }

    @Override
    public void addNodesConnectedIn(TranslateTo translateTo, String sourceNodeTemplateId,
                                           String dependentNodeTemplateId, String targetResourceId,
                                           String requirementId, RequirementAssignment requirementAssignment) {
        EntityConsolidationData entityConsolidationData =
                getNestedTemplateConsolidationData(translateTo, translateTo.getHeatFileName(), dependentNodeTemplateId);

        if (Objects.nonNull(entityConsolidationData)) {
            entityConsolidationData.addNodesConnectedIn(sourceNodeTemplateId, requirementId, requirementAssignment);
        }
    }

    @Override
    public void removeParamNameFromAttrFuncList(ServiceTemplate serviceTemplate,
                                                       HeatOrchestrationTemplate heatOrchestrationTemplate,
                                                       String paramName,
                                                       String contrailSharedResourceId,
                                                       String sharedTranslatedResourceId) {

        throw new UnsupportedOperationException("API removeParamNameFromAttrFuncList "
                                               + "not supported for NestedConsolidationDataHandler");

    }

    @Override
    public void addNodesGetAttrOut(FunctionTranslator functionTranslator, String nodeTemplateId,
            String resourceTranslatedId, String propertyName, String attributeName) {

        EntityConsolidationData entityConsolidationData =
                getNestedTemplateConsolidationData(functionTranslator,
                        functionTranslator.getHeatFileName(), resourceTranslatedId);

        if (Objects.nonNull(entityConsolidationData)) {
            GetAttrFuncData getAttrFuncData = createGetAttrFuncData(propertyName, attributeName);
            entityConsolidationData.addNodesGetAttrOut(nodeTemplateId, getAttrFuncData);
        }
    }

    @Override
    public void addNodesGetAttrIn(FunctionTranslator functionTranslator,String nodeTemplateId, String targetResourceId,
            String targetResourceTranslatedId,  String propertyName, String attributeName) {

        EntityConsolidationData entityConsolidationData =
                getNestedTemplateConsolidationData(functionTranslator, functionTranslator.getHeatFileName(),
                        targetResourceId);

        if (Objects.nonNull(entityConsolidationData)) {
            GetAttrFuncData getAttrFuncData = createGetAttrFuncData(propertyName, attributeName);
            entityConsolidationData.addNodesGetAttrIn(nodeTemplateId, getAttrFuncData);
        }
    }

    @Override
    public void addOutputParamGetAttrIn(FunctionTranslator functionTranslator, String targetResourceId,
            String targetResourceTranslatedId, String propertyName, String attributeName) {

        EntityConsolidationData entityConsolidationData =
                getNestedTemplateConsolidationData(functionTranslator, functionTranslator.getHeatFileName(),
                        targetResourceId);

        if (Objects.nonNull(entityConsolidationData)) {
            GetAttrFuncData getAttrFuncData = createGetAttrFuncData(propertyName, attributeName);
            entityConsolidationData.addOutputParamGetAttrIn(getAttrFuncData);
        }
    }

    /**
     * Add nested consolidation data base on given parameters.
     */
    public void addConsolidationData(String serviceTemplateFileName,  TranslationContext context,
                                            String nestedHeatFileName, String nestedNodeTemplateId) {
        getNestedTemplateConsolidationData(serviceTemplateFileName, context,
                nestedHeatFileName, nestedNodeTemplateId);
    }

    private GetAttrFuncData createGetAttrFuncData(String propertyName, String attributeName) {
        GetAttrFuncData getAttrFuncData = new GetAttrFuncData();
        getAttrFuncData.setFieldName(propertyName);
        getAttrFuncData.setAttributeName(attributeName);
        return getAttrFuncData;
    }

    private NestedTemplateConsolidationData getNestedTemplateConsolidationData(FunctionTranslator functionTranslator,
            String nestedHeatFileName, String nestedNodeTemplateId) {
        ServiceTemplate serviceTemplate = functionTranslator.getServiceTemplate();
        TranslationContext context = functionTranslator.getContext();
        return getNestedTemplateConsolidationData(ToscaUtil
               .getServiceTemplateFileName(serviceTemplate), context, nestedHeatFileName, nestedNodeTemplateId);

    }

    private NestedTemplateConsolidationData getNestedTemplateConsolidationData(TranslateTo translateTo,
            String nestedHeatFileName, String nestedNodeTemplateId) {
        ServiceTemplate serviceTemplate = translateTo.getServiceTemplate();
        TranslationContext context = translateTo.getContext();
        return getNestedTemplateConsolidationData(ToscaUtil
                .getServiceTemplateFileName(serviceTemplate), context, nestedHeatFileName, nestedNodeTemplateId);
    }

    private NestedTemplateConsolidationData getNestedTemplateConsolidationData(
            String serviceTemplateFileName,  TranslationContext context,
            String nestedHeatFileName, String nestedNodeTemplateId) {

        if (isNestedResourceIdOccursInDifferentNestedFiles(context, nestedHeatFileName, nestedNodeTemplateId)) {
            throw new CoreException(new DuplicateResourceIdsInDifferentFilesErrorBuilder(nestedNodeTemplateId).build());
        }

        if (isNodeTemplatePointsToServiceTemplateWithoutNodeTemplates(
                nestedNodeTemplateId, nestedHeatFileName, context)) {
            return null;
        }
        return nestedConsolidationData
                .addNestedTemplateConsolidationData(serviceTemplateFileName, nestedNodeTemplateId);
    }

    private boolean isNodeTemplatePointsToServiceTemplateWithoutNodeTemplates(String nestedNodeTemplateId,
                     String nestedHeatFileName, TranslationContext context) {

        return context.isServiceTemplateWithoutNodeTemplatesSection(
                FileUtils.getFileWithoutExtention(nestedHeatFileName))
                       || context.isNodeTemplateIdPointsToStWithoutNodeTemplates(nestedNodeTemplateId);
    }

    private boolean isNestedResourceIdOccursInDifferentNestedFiles(TranslationContext context,
                    String nestedHeatFileName, String nestedNodeTemplateId) {
        return Objects.nonNull(nestedHeatFileName) && context.getAllTranslatedResourceIdsFromDiffNestedFiles(
                nestedHeatFileName).contains(nestedNodeTemplateId);
    }

    public boolean isNestedConsolidationDataExist(String serviceTemplateName) {
        return nestedConsolidationData.isNestedConsolidationDataExist(serviceTemplateName);
    }
}