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 */
package com.lp.mqtt;

import com.lp.util.LogUtil;
import com.lp.util.LogUtil4j;
import com.lp.util.PropertiesUtil;
import org.apache.commons.lang.StringUtils;
import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.MqttException;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.DependsOn;
import org.springframework.core.task.TaskExecutor;
import org.springframework.stereotype.Service;

import javax.annotation.PostConstruct;

@Service
@DependsOn(value = {"taskExecutor" , "applicationContext"})
public class MqttService {
	
	@Autowired
	private TaskExecutor taskExecutor ;
	
	// MQTT安装的服务器地址:MQTT定义的端口号  
    public static final String HOST = PropertiesUtil.getProperty("mqtt.config" ,"mqtt.serverURI1");
    // 定阅的主题  
    public static final String TOPIC = PropertiesUtil.getProperty("mqtt.config" ,"mqtt.service.topic");
    // 定义MQTT的ID
    private static final String clientid = PropertiesUtil.getProperty("mqtt.config" ,"mqtt.clientId");
    
    public static final String userName = PropertiesUtil.getProperty("mqtt.config" ,"mqtt.username");
    public static final String passWord = PropertiesUtil.getProperty("mqtt.config" ,"mqtt.password");

    public static final Boolean cleanSession = "true".equalsIgnoreCase(PropertiesUtil.getProperty("mqtt.config" ,"mqtt.cleanSession"))  ;
    public static final Boolean autoReconn = "true".equalsIgnoreCase(PropertiesUtil.getProperty("mqtt.config" ,"mqtt.autoReconnect"))  ;
    public static final String keepalive = PropertiesUtil.getProperty("mqtt.config" ,"mqtt.keepalive") ;
    public static final String timeout = PropertiesUtil.getProperty("mqtt.config" ,"mqtt.timeout") ;

    public static Logger LOGGER = (Logger) LoggerFactory.getLogger(MqttService.class);
    
    public static MqttClient client;  

    /** 
     * 构造函数 
     * @throws MqttException 
     */  
    public MqttService() throws MqttException {  
        // MemoryPersistence设置
        client = new MqttClient(HOST, clientid, new MemoryPersistence());  
        
    }

    @PostConstruct
    public void init(){
    	connect();  
    }
    
    /** 
     *  用来连接服务器 
     */  
    public void connect() {  
        MqttConnectOptions options = new MqttConnectOptions();  
        options.setCleanSession(false);  
        options.setUserName(userName);  
        options.setPassword(passWord.toCharArray());  
        // 设置超时时间
        if(StringUtils.isNumeric(timeout)){
            options.setConnectionTimeout(Integer.parseInt(timeout));
        }
        // 设置会话心跳时间
        if(StringUtils.isNumeric(keepalive)){
            options.setKeepAliveInterval(Integer.parseInt(keepalive));
        }
        // 重连
        options.setAutomaticReconnect(autoReconn);
        // 清楚缓存
        options.setCleanSession(cleanSession);
        try {  
            client.setCallback(new MessageCallback(taskExecutor));  
            client.connect(options);  
        } catch (Exception e) {  
        	LogUtil.errorLog(e);
        } 
    }  

    public static void subscribe(){
    	try{
	    	 // 订阅消息  
    		String[] topic1 = TOPIC.split(",")  ;  
    		int[] Qos = new int[topic1.length];
    		for(int i = 0; i< Qos.length ;i++ ){
    			Qos[i] =1 ;
    		}
	        client.subscribe(topic1, Qos);
            LogUtil4j.debugLogger.debug("subscribe with {}", topic1);
    	}catch (Exception e) {
            LOGGER.error("subscribe error", e);
		}
    }
    /**
     * 消息发送
     * @param message byte
     * @param topic
     */
    public static void pubMessage(byte[] message,String topic){
    	MqttMessage mess = new MqttMessage();
    	mess.setQos(1);
    	mess.setRetained(false);
    	mess.setPayload(message);
    	try {
			client.publish(topic, mess);
		} catch (Exception e) {
            LOGGER.error("pubMessage", e);
		}
    }
    
    /**
     * 消息发送
     * @param message
     * @param topic
     */
    public static void pubMessage(String message,String topic){
    	MqttMessage mess = new MqttMessage();
    	mess.setQos(1);
    	mess.setRetained(false);
    	mess.setPayload(message.getBytes());
    	try {
			client.publish(topic, mess);
		} catch (Exception e) {
            LOGGER.error("pubMessage", e);
		}
    }
}