/*
    * Copyright 2016 The Lannister Project
    * 
    * 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 net.anyflow.lannister.topic;
  
  import java.io.IOException;
  
  import com.fasterxml.jackson.annotation.JsonIgnore;
  import com.fasterxml.jackson.annotation.JsonProperty;
  import com.hazelcast.nio.ObjectDataInput;
  import com.hazelcast.nio.ObjectDataOutput;
  
  import io.netty.handler.codec.mqtt.MqttQoS;
  import net.anyflow.lannister.plugin.ITopicSubscription;
  import net.anyflow.lannister.serialization.SerializableFactory;
  
  public class TopicSubscription
  		implements com.hazelcast.nio.serialization.IdentifiedDataSerializable, ITopicSubscription {
  	public static final TopicSubscriptions NEXUS = new TopicSubscriptions();
  	public final static int ID = 8;
  	@JsonProperty
  	private String clientId;
  	@JsonProperty
  	private String topicFilter;
  	@JsonProperty
  	private MqttQoS qos;
  
  	public TopicSubscription() { // just for Serialization
  	}
  
  	public TopicSubscription(String clientId, String topicFilter, MqttQoS qos) {
  		this.clientId = clientId;
  		this.topicFilter = topicFilter;
  		this.qos = qos;
  	}
  
  	public String key() {
  		return TopicSubscriptions.key(topicFilter, clientId);
  	}
  
  	@Override
  	public String clientId() {
  		return clientId;
  	}
  
  	/*
  	 * (non-Javadoc)
  	 * 
  	 * @see net.anyflow.lannister.topic.ITopicSubscription#topicFilter()
  	 */
  	@Override
  	public String topicFilter() {
  		return topicFilter;
  	}
  
  	/*
  	 * (non-Javadoc)
  	 * 
  	 * @see net.anyflow.lannister.topic.ITopicSubscription#qos()
  	 */
  	@Override
  	public MqttQoS qos() {
  		return qos;
  	}
  
  	@JsonIgnore
  	@Override
  	public int getFactoryId() {
  		return SerializableFactory.ID;
  	}
  
  	@JsonIgnore
  	@Override
  	public int getId() {
  		return ID;
  	}
  
  	@Override
  	public void writeData(ObjectDataOutput out) throws IOException {
  		out.writeUTF(clientId);
  		out.writeUTF(topicFilter);
  		out.writeInt(qos != null ? qos.value() : Integer.MIN_VALUE);
  	}
  
  	@Override
  	public void readData(ObjectDataInput in) throws IOException {
 		clientId = in.readUTF();
 		topicFilter = in.readUTF();
 
 		int rawInt = in.readInt();
 		qos = rawInt != Integer.MIN_VALUE ? MqttQoS.valueOf(rawInt) : null;
 	}
 
 	@Override
 	public String toString() {
 		return new StringBuilder().append("clientId=").append(clientId).append(", topicFilter=").append(topicFilter)
 				.append(", qos=").append(topicFilter).toString();
 	}
 }