package com.flightticket.config;

import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.config.SimpleRabbitListenerContainerFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class RabbitMQConfig {

    public static final String NOTIFICATION_QUEUE = "notification.queue";
    public static final String NOTIFICATION_EXCHANGE = "notification.exchange";
    public static final String NOTIFICATION_ROUTING_KEY = "notification.routing.key";

    @Bean
    public Queue notificationQueue() {
        return QueueBuilder.durable(NOTIFICATION_QUEUE)
                .withArgument("x-dead-letter-exchange", "dlx.exchange")
                .build();
    }

    @Bean
    public TopicExchange notificationExchange() {
        return new TopicExchange(NOTIFICATION_EXCHANGE);
    }

    @Bean
    public Binding notificationBinding(Queue notificationQueue, TopicExchange notificationExchange) {
        return BindingBuilder.bind(notificationQueue)
                .to(notificationExchange)
                .with(NOTIFICATION_ROUTING_KEY);
    }

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

    @Bean
    public RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory) {
        RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);
        rabbitTemplate.setMessageConverter(jsonMessageConverter());
        return rabbitTemplate;
    }

    @Bean
    public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory(
            ConnectionFactory connectionFactory) {
        SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
        factory.setConnectionFactory(connectionFactory);
        factory.setMessageConverter(jsonMessageConverter());
        factory.setConcurrentConsumers(3);
        factory.setMaxConcurrentConsumers(10);
        return factory;
    }
}