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package {{package}}.kafka.consumer.config;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.kafka.core.reactive.ReactiveKafkaConsumerTemplate;
import reactor.kafka.receiver.ReceiverOptions;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Collections;

@Configuration
public class KafkaConfig {

    @Bean
    public ReceiverOptions kafkaReceiverOptions(
            @Value(value = "${adapters.kafka.consumer.topic}") String topic,
            KafkaProperties kafkaProperties) throws UnknownHostException {
        kafkaProperties.setClientId(InetAddress.getLocalHost().getHostName()); // Set id based on hostname, customize here another properties
        ReceiverOptions basicReceiverOptions = ReceiverOptions.create(kafkaProperties.buildConsumerProperties());
        return basicReceiverOptions.subscription(Collections.singletonList(topic));
    }

    @Bean
    public ReactiveKafkaConsumerTemplate reactiveKafkaConsumerTemplate(ReceiverOptions kafkaReceiverOptions) {
        return new ReactiveKafkaConsumerTemplate<>(kafkaReceiverOptions);
    }
}