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/*
 * Copyright 2011-2018 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.springframework.data.redis.connection.lettuce;

import io.lettuce.core.pubsub.RedisPubSubListener;

import org.springframework.data.redis.connection.DefaultMessage;
import org.springframework.data.redis.connection.MessageListener;
import org.springframework.util.Assert;

/**
 * MessageListener wrapper around Lettuce {@link RedisPubSubListener}.
 *
 * @author Costin Leau
 */
class LettuceMessageListener implements RedisPubSubListener {

	private final MessageListener listener;

	LettuceMessageListener(MessageListener listener) {
		Assert.notNull(listener, "MessageListener must not be null!");
		this.listener = listener;
	}

	/* 
	 * (non-Javadoc)
	 * @see io.lettuce.core.pubsub.RedisPubSubListener#message(java.lang.Object, java.lang.Object)
	 */
	public void message(byte[] channel, byte[] message) {
		listener.onMessage(new DefaultMessage(channel, message), null);
	}

	/* 
	 * (non-Javadoc)
	 * @see io.lettuce.core.pubsub.RedisPubSubListener#message(java.lang.Object, java.lang.Object, java.lang.Object)
	 */
	public void message(byte[] pattern, byte[] channel, byte[] message) {
		listener.onMessage(new DefaultMessage(channel, message), pattern);
	}

	/* 
	 * (non-Javadoc)
	 * @see io.lettuce.core.pubsub.RedisPubSubListener#subscribed(java.lang.Object, long)
	 */
	public void subscribed(byte[] channel, long count) {}

	/* 
	 * (non-Javadoc)
	 * @see io.lettuce.core.pubsub.RedisPubSubListener#psubscribed(java.lang.Object, long)
	 */
	public void psubscribed(byte[] pattern, long count) {}

	/* 
	 * (non-Javadoc)
	 * @see io.lettuce.core.pubsub.RedisPubSubListener#unsubscribed(java.lang.Object, long)
	 */
	public void unsubscribed(byte[] channel, long count) {}

	/* 
	 * (non-Javadoc)
	 * @see io.lettuce.core.pubsub.RedisPubSubListener#punsubscribed(java.lang.Object, long)
	 */
	public void punsubscribed(byte[] pattern, long count) {}
}