/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.apache.isis.core.metamodel.facets.actions.publish;

import java.util.List;

import org.apache.isis.applib.Identifier;
import org.apache.isis.applib.annotation.PublishedAction;
import org.apache.isis.applib.annotation.PublishingPayloadFactoryForAction;
import org.apache.isis.applib.services.publish.EventPayload;
import org.apache.isis.applib.services.publish.EventPayloadForActionInvocation;

public class PublishedActionPayloadFactoryDefault implements PublishedAction.PayloadFactory {

    private final PublishingPayloadFactoryForAction payloadFactory;

    public PublishedActionPayloadFactoryDefault() {
        this(null);
    }

    public PublishedActionPayloadFactoryDefault(
            final PublishingPayloadFactoryForAction payloadFactory) {
        this.payloadFactory = payloadFactory;
    }

    @Override
    public EventPayload payloadFor(
            final Identifier actionIdentifier,
            final Object target,
            final List<Object> arguments,
            final Object result) {
        return payloadFactory != null
                ? payloadFactory.payloadFor(actionIdentifier, target, arguments, result)
                : new EventPayloadForActionInvocation<Object>(
                actionIdentifier,
                target,
                arguments,
                result);
    }

    /**
     * For testing only.
     */
    public PublishingPayloadFactoryForAction getPayloadFactory() {
        return payloadFactory;
    }
}
