package com.muyu.mqtt;



import com.alibaba.fastjson.JSON;
import com.muyu.mqtt.dao.MessageData;
import com.muyu.utils.ConversionUtil;
import lombok.extern.log4j.Log4j2;
import org.apache.kafka.clients.producer.ProducerRecord;
import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken;
import org.eclipse.paho.client.mqttv3.MqttCallback;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaAdmin;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Service;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * 回执消息类 MessageCallbackService
 *
 * @author Yangle
 * Date 2024/6/6 15:08
 */
@Service
@Log4j2
public class MessageCallbackService implements MqttCallback {

    @Autowired
    private KafkaTemplate kafkaTemplate;
    @Autowired
    private KafkaAdmin kafkaAdmin;

    @Override
    public void connectionLost(Throwable cause) {
        System.out.println("connectionLost:"+cause.getMessage());
    }


    private static final AtomicInteger PARTITION_COUNTER = new AtomicInteger(0); // 假设NUM_PARTITIONS是已知的分区数量
    private static final int NUM_PARTITIONS = 8; // 请根据实际情况设置分区数量

    @Override
    public void messageArrived(String topic, MqttMessage mqttMessage) {
        log.info("topic:{}", topic);
        log.info("Qos:{}", mqttMessage.getQos());
        log.info("message content:{}", new String(mqttMessage.getPayload()));

        String s = new String(mqttMessage.getPayload());
        MessageData main = ConversionUtil.main(s);

        // 准备ProducerRecord并发送到Kafka
        String kafkaTopic = topic; // 假设MQTT主题与Kafka主题相同
        String key = main.getVin(); // 使用vin作为key，如果适用
        String value = JSON.toJSONString(main);
        ProducerRecord<String, String> producerRecord = new ProducerRecord<>(kafkaTopic, key, value);
            kafkaTemplate.send(producerRecord);// 注意：这里使用get()会阻塞直到发送完成，实际应用中可能需要异步处理

    }

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