package com.rehome.mqttclienttemperature;


import com.rehome.mqttclienttemperature.service.TemperatureService;
import com.rehome.mqttclienttemperature.utils.MqttSSLSocketFactory;
import com.rehome.mqttclienttemperature.utils.UUIDUtil;
import org.eclipse.paho.client.mqttv3.*;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;

import javax.net.ssl.SSLSocketFactory;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;


public class MqttRSAClient {
    /**
     * 代理服务器ip地址
     */
    public static final String MQTT_BROKER_HOST = "ssl://47.242.184.139:8883";

    /**
     * 客户端唯一标识
     */
    public static String MQTT_CLIENT_ID = "AppServer_admin-client-temperature_APP_server_01";

    /**
     *帐号
     */
    public static String USERNAME = "admin";
    /**
     * 密码
     */
    public static String PASSWORD = "publish452131wW452131wW$";
    /**
     * 订阅标识
     */
    public static String TOPIC_FILTER = "WifiSHT/+/SHT20";

    private volatile static MqttClient mqttClient;
    private static MqttConnectOptions options;
    private static int qos = 2;

    //定时器
    private Timer timer;

    public MqttRSAClient(){
        try {
            MQTT_CLIENT_ID = UUIDUtil.getUUID();
            // host为主机名，clientid即连接MQTT的客户端ID，一般以客户端唯一标识符表示，
            // MemoryPersistence设置clientid的保存形式，默认为以内存保存
            mqttClient = new MqttClient(MQTT_BROKER_HOST, MQTT_CLIENT_ID, new MemoryPersistence());
            // 配置参数信息
            options = new MqttConnectOptions();
            // 设置是否清空session,这里如果设置为false表示服务器会保留客户端的连接记录，
            // 这里设置为true表示每次连接到服务器都以新的身份连接
            options.setCleanSession(false);
            // 设置用户名
            options.setUserName(USERNAME);
            // 设置密码
            options.setPassword(PASSWORD.toCharArray());
            // 设置超时时间 单位为秒
            options.setConnectionTimeout(10);
            // 设置会话心跳时间 单位为秒 服务器会每隔1.5*20秒的时间向客户端发送个消息判断客户端是否在线，但这个方法并没有重连的机制
            options.setKeepAliveInterval(20);
            //断线重连
            options.setAutomaticReconnect(true);
            //mqtt服务器端单双向加密
            InputStream caCrtFile = this.getClass().getResourceAsStream("/ssl/my_root_ca.crt");
            InputStream crtFile = this.getClass().getResourceAsStream("/ssl/client.crt");
            InputStream keyFile = this.getClass().getResourceAsStream("/ssl/client.key");
            String password = "";
            SSLSocketFactory socketFactory = MqttSSLSocketFactory.getTwoDirSocketFactory(caCrtFile,crtFile,keyFile,password);
            options.setSocketFactory(socketFactory);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    public void start(TemperatureService temperatureService) {
        try {
            // 连接
            mqttClient.connect(options);
            // 订阅
            mqttClient.subscribe(TOPIC_FILTER,qos);
            // 设置回调
            mqttClient.setCallback(new MqttCallbackExtended(){

                @Override
                public void connectionLost(Throwable throwable) {
                    System.out.println("connectionLost");
                    try {
                        mqttClient.reconnect();
                    } catch (MqttException e) {
                        e.printStackTrace();
                    }
                }

                @Override
                public void messageArrived(String s, MqttMessage mqttMessage) {
                    String strData = new String(mqttMessage.getPayload());
                    System.out.println("topic:"+s);
                    System.out.println("Qos:"+mqttMessage.getQos());
                    System.out.println("message RSA:"+strData);
                    temperatureService.saveTemperature(strData,s);
                }

                @Override
                public void deliveryComplete(IMqttDeliveryToken iMqttDeliveryToken) {
                    System.out.println("deliveryComplete---------"+ iMqttDeliveryToken.isComplete());
                }

                @Override
                public void connectComplete(boolean b, String s) {
                    //连接成功后调用
                    try {
                        mqttClient.subscribe(TOPIC_FILTER,qos);//具体订阅代码
                    } catch (MqttException e) {
                        e.printStackTrace();
                    }
                }
            });
            timer = new Timer();
            timer.schedule(new TimerTask() {
                public void run() {
                    System.out.println("-------设定要指定任务--------");
                    try {
                        //判断拦截状态，这里注意一下，如果没有这个判断，是非常坑的
                        if (!mqttClient.isConnected()) {
                            System.out.println("***** 没有连接到服务器 *****");
                            System.out.println("***** client to connect *****");
                            // 重新连接
                            mqttClient.connect(options);
                        }
                        if (mqttClient.isConnected()) {//连接成功，跳出连接
                            System.out.println("***** connect success *****");
                        }
                    } catch (MqttException e1) {
                        e1.printStackTrace();
                    }
                }
            }, 10000,10000);
            // 设定指定的时间time,此处为10000毫秒
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}