package cn.lemon.rabbitmq.config;

import org.springframework.amqp.core.AcknowledgeMode;
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
import org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class MQConsumerConfig {
	@Value("${spring.rabbitmq.queuename}")
	private String queueName ;
	@Value("${spring.rabbitmq.exchange}")
	private String queueExchange;
	@Value("${spring.rabbitmq.routingkey}")
	private String routingkey;

    @Bean
    public MessageConverter messageConverter() {
        return new Jackson2JsonMessageConverter();
    }

    @Bean
    public RabbitTemplate template(ConnectionFactory connectionFactory, MessageConverter converter) {
        RabbitTemplate template = new RabbitTemplate(connectionFactory);
        template.setMessageConverter(converter);
        return template;
    }
    
    @Bean
    public SimpleMessageListenerContainer container(ConnectionFactory connectionFactory, Queue queue, MessageListenerAdapter listenerAdapter) {
        SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(connectionFactory);
        //container.setQueueNames(queueName);
        container.setQueues(queue);
        container.setExposeListenerChannel(true);
        container.setMaxConcurrentConsumers(1);
        container.setConcurrentConsumers(1);
        container.setPrefetchCount(1000);
        container.setAcknowledgeMode(AcknowledgeMode.MANUAL); //设置确认模式手工确认
        container.setMessageListener(listenerAdapter);
        return container;
    }
    
    @Bean
    public MessageListenerAdapter listenerAdapter(MQAwareListener listener, MessageConverter converter) {
        return new MessageListenerAdapter(listener, converter);
    }
    
    @Bean
    public Queue queue() {
        return new Queue(queueName, true);
    }
    
    /**
     * 创建exchange, 可以创建TopicExchange(*、#模糊匹配routing key，routing key必须包含".")，DirectExchange，FanoutExchange(无routing key概念)
     * @return
     */
    @Bean
    public TopicExchange exchange(){
        return new TopicExchange(queueExchange);
    }
    /*@Bean
    public DirectExchange exchange(){
        return new DirectExchange(queueExchange);
    }*/
    
    @Bean
    public Binding binding(Queue queue, TopicExchange exchange){
        return BindingBuilder.bind(queue).to(exchange).with(routingkey);
    }
}