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package atom.app.kie;

import atom.app.Activity;
import atom.app.ActivityThread;
import atom.app.KieActivity;
import atom.kie.AbstractTask;
import org.jbpm.workflow.core.node.DataAssociation;
import org.kie.api.runtime.process.WorkItem;
import org.kie.api.runtime.process.WorkItemManager;
import org.kie.internal.runtime.StatefulKnowledgeSession;

import java.util.Map;

/**
 * Read client attribute task work item handler with KIE session.
 *
 * @author Vladimir Ovcharov
 * @version 1.2 3/10/15
 */
public final class ReadClientAttributeTaskWorkItemHandler extends AbstractTask {
    /**
     * Default constructor with KIE session.
     *
     * @param kieSession KIE session to use
     */
    public ReadClientAttributeTaskWorkItemHandler(
            final StatefulKnowledgeSession kieSession) {
        super(kieSession);
    }

    @Override
    public void executeWorkItem(final WorkItem item,
                                final WorkItemManager manager) {
        final Activity activity =
                (Activity) getVariable(item, KieActivity.ACTIVITY);
        final ActivityThread thread = activity.getActivityThread();
        final Map results = item.getResults();
        final Map clientAttributes =
                thread.getClientAttributes();
        for (DataAssociation association : getOutAssociations(item)) {
            for (String source : association.getSources()) {
                final String value = clientAttributes.get(source);
                results.put(source, value);
            }
        }
        manager.completeWorkItem(item.getId(), item.getResults());
    }

    @Override
    public void abortWorkItem(final WorkItem item,
                              final WorkItemManager manager) {
        manager.abortWorkItem(item.getId());
    }
}