package com.thhy.screen.config;

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.persist.MemoryPersistence;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class MqttClientConfig {

    private Logger logger = LoggerFactory.getLogger("MQTT初始化");

    @Bean
    public MqttClient createClient(MqttConfig mqttConfig){
        MemoryPersistence persistence = new MemoryPersistence();
        MqttClient client = null;
        try {
            client = new MqttClient(mqttConfig.getBroker(), mqttConfig.getClientId(), persistence);
        } catch (MqttException e) {
            logger.error("MQTT客户端初始化错误");
            return null;
        }
        logger.error("MQTT客户端初始化正常");
        MqttConnectOptions connOpts = new MqttConnectOptions();
        connOpts.setUserName(mqttConfig.getUsername());
        connOpts.setPassword(mqttConfig.getPassword().toCharArray());
        // 保留会话
        connOpts.setCleanSession(true);

        // 设置回调
        client.setCallback(new OnMqttCallBack());

        try {
            client.connect(connOpts);
        } catch (MqttException e) {
            logger.error("MQTT客户端连接出现错误"+e.getMessage());
            return client;
        }
        logger.error("MQTT客户端连接成功");
        // 订阅
        try {
            client.subscribe(mqttConfig.getSubTopic());
            logger.error("MQTT客户端订阅["+mqttConfig.getSubTopic()+"]成功");
        } catch (MqttException e) {
            logger.error("MQTT客户端订阅["+mqttConfig.getSubTopic()+"]失败"+e.getMessage());
            return client;
        }
        return client;
    }
}