/*
 * Copyright 2014 The Netty Project
 *
 * The Netty Project 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 io.netty.handler.codec.mqtt;

import io.netty.util.internal.StringUtil;
import org.apache.commons.lang3.ArrayUtils;

import java.util.Collections;
import java.util.List;

/**
 * Payload of the {@link MqttUnsubscribeMessage}
 */
public class MqttUnsubscribePayload {

    protected List<String> topics;

    public MqttUnsubscribePayload(List<String> topics) {
        this.topics = Collections.unmodifiableList(topics);
    }

    public List<String> topics() {
        return topics;
    }

    @Override
    public String toString() {
        return StringUtil.simpleClassName(this)
                + '['
                + "topics=" + ArrayUtils.toString(topics)
                + ']';
    }
}