package kr.wisestone.owl.config;

import kr.wisestone.owl.service.impl.AttachedFileServiceImpl;
import kr.wisestone.owl.config.kafka.KafkaReceiver;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.kafka.support.serializer.JsonDeserializer;
import org.springframework.kafka.support.serializer.JsonSerializer;
import org.apache.kafka.clients.consumer.ConsumerConfig;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.common.serialization.StringDeserializer;
import org.apache.kafka.common.serialization.StringSerializer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.kafka.annotation.EnableKafka;
import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory;
import org.springframework.kafka.core.*;
import java.util.HashMap;
import java.util.Map;

// edit by zenith : for disable kafka
//@EnableKafka
@Configuration
public class KafkaConfiguration {
    private static final Logger LOGGER = LoggerFactory.getLogger(AttachedFileServiceImpl.class);

    @Value("${use.kafka}")
    private boolean useKafka;

    @Value("${kafka.bootstrap.servers}")
    private String bootstrapServers;

    @Value("${kafka.consumer.group.id}")
    private String groupId;

    @Bean
    public ProducerFactory<String, Object> producerFactory() {
        Map<String, Object> configProps = new HashMap<>();
        configProps.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, this.bootstrapServers);
        configProps.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        configProps.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, JsonSerializer.class);
        return new DefaultKafkaProducerFactory<>(configProps);
    }

    @Bean
    public KafkaTemplate<String, Object> kafkaTemplate() {
        return new KafkaTemplate<>(this.producerFactory());
    }

    @Bean
    public ConsumerFactory<String, Object> consumerFactory() {
        Map<String, Object> configProps = new HashMap<>();
        configProps.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, this.bootstrapServers);
        configProps.put(ConsumerConfig.GROUP_ID_CONFIG, this.groupId);
        configProps.put(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG, true);
        configProps.put(ConsumerConfig.AUTO_COMMIT_INTERVAL_MS_CONFIG, 1000);
        configProps.put(ConsumerConfig.SESSION_TIMEOUT_MS_CONFIG, 30000);
        configProps.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
        configProps.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, JsonDeserializer.class);

        return new DefaultKafkaConsumerFactory<>(configProps);
    }

    @Bean
    public ConcurrentKafkaListenerContainerFactory<String, String> kafkaListenerContainerFactory() {
        ConcurrentKafkaListenerContainerFactory<String, String> factory = new ConcurrentKafkaListenerContainerFactory<>();
        factory.setConsumerFactory(this.consumerFactory());
        return factory;
    }
}