package com.fzzy.mqtt;

import lombok.extern.slf4j.Slf4j;
import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken;
import org.eclipse.paho.client.mqttv3.MqttCallbackExtended;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * @Description : MQTT接受服务的回调类
 */
@Slf4j
@Component
public class MqttAcceptCallback implements MqttCallbackExtended {

    @Autowired
    private MqttAcceptClient mqttAcceptClient;

    @Autowired
    private MqttProperties mqttProperties;


    /**
     * 客户端断开后触发
     *
     * @param throwable
     */
    @Override
    public void connectionLost(Throwable throwable) {
        log.info("连接断开，可以重连");
        if (MqttAcceptClient.client == null || !MqttAcceptClient.client.isConnected()) {
            log.info("【emqx重新连接】....................................................");
            mqttAcceptClient.reconnection();
        }
    }


    /**
     * 客户端收到消息触发
     *
     * @param topic       主题
     * @param mqttMessage 消息
     */
    @Override
    public void messageArrived(String topic, MqttMessage mqttMessage) throws Exception {
        log.info("【接收消息主题】:" + topic);
        log.info("【接收消息Qos】:" + mqttMessage.getQos());
        log.info("【接收消息内容】:" + new String(mqttMessage.getPayload()));
        //        int i = 1/0;
    }


    /**
     * 发布消息成功
     *
     * @param token token
     */
    @Override
    public void deliveryComplete(IMqttDeliveryToken token) {
        String[] topics = token.getTopics();
        for (String topic : topics) {
            log.info("向主题【" + topic + "】发送消息成功！");
        }
        try {
            MqttMessage message = token.getMessage();
            byte[] payload = message.getPayload();
            String s = new String(payload, "UTF-8");
            log.info("【消息内容】:" + s);
        } catch (Exception e) {
            log.error("MqttAcceptCallback deliveryComplete error,message:{}", e.getMessage());
            e.printStackTrace();
        }
    }

    /**
     * 连接emq服务器后触发
     *
     * @param b
     * @param s
     */
    @Override
    public void connectComplete(boolean b, String s) {
        log.info("============================= 客户端【" + MqttAcceptClient.client.getClientId() + "】连接成功！=============================");
        // 以/#结尾表示订阅所有以test开头的主题
        // 订阅所有机构主题
        mqttAcceptClient.subscribe(mqttProperties.getDefaultTopic(), 0);
    }

}