package com.fzzy.mqtt;

import lombok.extern.slf4j.Slf4j;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.integration.annotation.IntegrationComponentScan;
import org.springframework.integration.annotation.ServiceActivator;
import org.springframework.integration.channel.DirectChannel;
import org.springframework.integration.mqtt.core.DefaultMqttPahoClientFactory;
import org.springframework.integration.mqtt.core.MqttPahoClientFactory;
import org.springframework.integration.mqtt.outbound.MqttPahoMessageHandler;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.MessageHandler;

/**
 * MQTT生产端
 */
@Slf4j
@Configuration
@IntegrationComponentScan
public class MqttOutboundConfiguration {
    @Autowired
    private MqttProperties mqttProperties;

    @Bean
    public MessageChannel mqttOutboundChannel() {
        return new DirectChannel();
    }

    @Bean
    public MqttPahoClientFactory getReceiverMqttConnectOptionsForSend() {
        DefaultMqttPahoClientFactory factory = new DefaultMqttPahoClientFactory();
        String[] array = mqttProperties.getHost().split(",");
        MqttConnectOptions options = new MqttConnectOptions();
        options.setServerURIs(array);

        if(null == mqttProperties.getClientUsername()) mqttProperties.setClientUsername(" ");
        if(null == mqttProperties.getClientPassword()) mqttProperties.setClientPassword(" ");
        options.setUserName(mqttProperties.getClientUsername());
        options.setPassword(mqttProperties.getClientPassword().toCharArray());
        // 接受离线消息
        options.setCleanSession(false); //告诉代理客户端是否要建立持久会话   false为建立持久会话
        options.setMqttVersion(4);
        factory.setConnectionOptions(options);
        return factory;
    }

    @Bean
    @ServiceActivator(inputChannel = "mqttOutboundChannel")
    public MessageHandler mqttOutbound() {
        MqttPahoMessageHandler messageHandler = new MqttPahoMessageHandler(mqttProperties.getClientId() + "outbound", getReceiverMqttConnectOptionsForSend());
        messageHandler.setAsync(true);
        return messageHandler;
    }

}