/*
 * Copyright (c) 2014, 2015 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */

package org.opendaylight.controller.cluster.datastore;

import akka.actor.ActorRef;
import akka.actor.Props;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.junit.Assert;
import org.junit.Test;
import org.opendaylight.controller.cluster.datastore.messages.DataChanged;
import org.opendaylight.controller.cluster.datastore.utils.ActorContext;
import org.opendaylight.controller.cluster.datastore.utils.MockClusterWrapper;
import org.opendaylight.controller.cluster.datastore.utils.MockConfiguration;
import org.opendaylight.controller.cluster.raft.utils.DoNothingActor;
import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor;
import org.opendaylight.controller.md.cluster.datastore.model.CompositeModel;
import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;

public class DataChangeListenerProxyTest extends AbstractActorTest {

    private static class MockDataChangedEvent
            implements AsyncDataChangeEvent<YangInstanceIdentifier, NormalizedNode<?, ?>> {
        Map<YangInstanceIdentifier,NormalizedNode<?,?>> createdData = new HashMap<>();
        Map<YangInstanceIdentifier,NormalizedNode<?,?>> updatedData = new HashMap<>();
        Map<YangInstanceIdentifier,NormalizedNode<?,?>> originalData = new HashMap<>();

        @Override
        public Map<YangInstanceIdentifier, NormalizedNode<?, ?>> getCreatedData() {
            createdData.put(YangInstanceIdentifier.EMPTY, CompositeModel.createDocumentOne(
                    CompositeModel.createTestContext()));
            return createdData;
        }

        @Override
        public Map<YangInstanceIdentifier, NormalizedNode<?, ?>> getUpdatedData() {
            updatedData.put(YangInstanceIdentifier.EMPTY, CompositeModel.createTestContainer());
            return updatedData;

        }

        @Override
        public Set<YangInstanceIdentifier> getRemovedPaths() {
            Set<YangInstanceIdentifier> ids = new HashSet<>();
            ids.add(CompositeModel.TEST_PATH);
            return ids;
        }

        @Override
        public Map<YangInstanceIdentifier, NormalizedNode<?, ?>> getOriginalData() {
            originalData.put(YangInstanceIdentifier.EMPTY, CompositeModel.createFamily());
            return originalData;
        }

        @Override public NormalizedNode<?, ?> getOriginalSubtree() {
            return CompositeModel.createFamily() ;
        }

        @Override public NormalizedNode<?, ?> getUpdatedSubtree() {
            return CompositeModel.createTestContainer();
        }
    }


    @Test
    public void testOnDataChanged() throws Exception {
        final Props props = Props.create(MessageCollectorActor.class);
        final ActorRef actorRef = getSystem().actorOf(props);

        DataChangeListenerProxy dataChangeListenerProxy = new DataChangeListenerProxy(
                getSystem().actorSelection(actorRef.path()));

        dataChangeListenerProxy.onDataChanged(new MockDataChangedEvent());

        //Check if it was received by the remote actor
        ActorContext testContext = new ActorContext(getSystem(), getSystem().actorOf(
                Props.create(DoNothingActor.class)), new MockClusterWrapper(), new MockConfiguration());
        Object messages = testContext
            .executeOperation(actorRef, MessageCollectorActor.GET_ALL_MESSAGES);

        Assert.assertNotNull(messages);

        Assert.assertTrue(messages instanceof List);

        List<?> listMessages = (List<?>) messages;

        Assert.assertEquals(1, listMessages.size());

        Assert.assertTrue(listMessages.get(0).getClass().equals(DataChanged.class));

    }
}