/**
 *
 * Copyright the original author or authors
 *
 * 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.jivesoftware.smackx.pubsub;

import java.util.ArrayList;
import java.util.Collection;

/**
 * Represents a request to publish an item(s) to a specific node.
 * 
 * @author Robin Collier
 */
public class PublishItem<T extends Item> extends NodeExtension
{
    protected Collection<T> items;

    /**
     * Construct a request to publish an item to a node.
     * 
     * @param nodeId The node to publish to
     * @param toPublish The {@link Item} to publish
     */
    public PublishItem(String nodeId, T toPublish)
    {
        super(PubSubElementType.PUBLISH, nodeId);
        items = new ArrayList<T>(1);
        items.add(toPublish);
    }

    /**
     * Construct a request to publish multiple items to a node.
     * 
     * @param nodeId The node to publish to
     * @param toPublish The list of {@link Item} to publish
     */
    public PublishItem(String nodeId, Collection<T> toPublish)
    {
        super(PubSubElementType.PUBLISH, nodeId);
        items = toPublish;
    }

    @Override
    public String toXML()
    {
        StringBuilder builder = new StringBuilder("<");
        builder.append(getElementName());
        builder.append(" node='");
        builder.append(getNode());
        builder.append("'>");

        for (Item item : items)
        {
            builder.append(item.toXML());
        }
        builder.append("</publish>");

        return builder.toString();
    }
}
