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 * Copyright (C) 2020, exense GmbH
 *  
 * This file is part of STEP
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 * GNU Affero General Public License for more details.
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package step.artefacts.handlers;

import step.artefacts.TestScenario;
import step.artefacts.handlers.functions.MaxAndMultiplyingTokenForecastingContext;
import step.artefacts.handlers.functions.TokenForecastingContext;
import step.core.artefacts.AbstractArtefact;
import step.core.artefacts.handlers.ArtefactHandler;
import step.core.artefacts.handlers.AtomicReportNodeStatusComposer;
import step.core.artefacts.reports.ReportNode;
import step.threadpool.ThreadPool;
import step.threadpool.ThreadPool.WorkerController;
import step.threadpool.WorkerItemConsumerFactory;

import java.util.Iterator;
import java.util.List;
import java.util.OptionalInt;
import java.util.function.Consumer;

import static step.artefacts.handlers.functions.TokenForecastingExecutionPlugin.getTokenForecastingContext;
import static step.artefacts.handlers.functions.TokenForecastingExecutionPlugin.pushNewTokenNumberCalculationContext;

public class TestScenarioHandler extends ArtefactHandler {

	@Override
	public void createReportSkeleton_(ReportNode node, TestScenario testArtefact) {
		TokenForecastingContext tokenForecastingContext = getTokenForecastingContext(context);
		MaxAndMultiplyingTokenForecastingContext newTokenForecastingContext = new MaxAndMultiplyingTokenForecastingContext(tokenForecastingContext, testArtefact.getChildren().size());
		pushNewTokenNumberCalculationContext(context, newTokenForecastingContext);
		try {
			for(AbstractArtefact child:getChildren(testArtefact)) {
				delegateCreateReportSkeleton(child, node);
				newTokenForecastingContext.nextIteration();
			}
		} finally {
			newTokenForecastingContext.end();
		}
	}

	@Override
	public void execute_(final ReportNode node, TestScenario testArtefact) {
		AtomicReportNodeStatusComposer reportNodeStatusComposer = new AtomicReportNodeStatusComposer(node);
		
		List artefacts = getChildren(testArtefact);
		Iterator iterator = artefacts.iterator();
		
		ThreadPool threadPool = context.get(ThreadPool.class);
		threadPool.consumeWork(iterator, new WorkerItemConsumerFactory() {
			@Override
			public Consumer createWorkItemConsumer(WorkerController control) {
				return workItem -> {
					ReportNode childReportNode = delegateExecute(workItem, node);
					reportNodeStatusComposer.addStatusAndRecompose(childReportNode);
				};
			}
		}, artefacts.size(), OptionalInt.of(artefacts.size()));

		reportNodeStatusComposer.applyComposedStatusToParentNode(node);
	}

	@Override
	public ReportNode createReportNode_(ReportNode parentNode, TestScenario testArtefact) {
		return new ReportNode();
	}

}