/*
 * ============LICENSE_START=======================================================
 * PNF-REGISTRATION-HANDLER
 * ================================================================================
 * Copyright (C) 2023 Deutsche Telekom Intellectual Property. All rights reserved.
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============LICENSE_END=========================================================
 */

package org.onap.dcaegen2.services.prh.tasks.commit;

import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.onap.dcaegen2.services.prh.adapter.aai.api.ConsumerDmaapModel;
import org.onap.dcaegen2.services.prh.service.DmaapConsumerJsonParser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.configurationprocessor.json.JSONException;
import org.springframework.context.annotation.Profile;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.listener.BatchAcknowledgingMessageListener;
import org.springframework.kafka.support.Acknowledgment;
import org.springframework.stereotype.Component;
import reactor.core.publisher.Flux;

import java.util.ArrayList;
import java.util.List;

/**
 * @author <a href="mailto:ajinkya-patil@t-systems.com">Ajinkya Patil</a> on 3/13/23
 */

@Profile("autoCommitDisabled")
@Component
public class KafkaConsumerTaskImpl implements KafkaConsumerTask, BatchAcknowledgingMessageListener<String, String> {

    private static final Logger LOGGER = LoggerFactory.getLogger(KafkaConsumerTaskImpl.class);

    @Autowired
    private DmaapConsumerJsonParser dmaapConsumerJsonParser;

    @Autowired
    private EpochDateTimeConversion epochDateTimeConversion;

    private List<String> jsonEvent = new ArrayList<>();

    private Acknowledgment offset;

    String kafkaTopic = System.getenv("kafkaTopic");

    String groupIdConfig = System.getenv("groupIdConfig");

    @Override
    @KafkaListener(topics = "${kafkaTopic}", groupId = "${groupIdConfig}")
    public void onMessage(List<ConsumerRecord<String, String>> list, Acknowledgment acknowledgment) {
       
       if (list != null && !list.isEmpty()) {
           
            
            list.stream().filter(consumerRecord -> consumerRecord.timestamp() >= epochDateTimeConversion.getStartDateOfTheDay() && consumerRecord.timestamp() <= epochDateTimeConversion.getEndDateOfTheDay())
                    .map(ConsumerRecord::value)
                    .forEach(value -> {
                          jsonEvent.add(value);
                    });

                     
        }
       

        offset = acknowledgment;
    }

    @Override
    public Flux<ConsumerDmaapModel> execute() throws JSONException {
        return dmaapConsumerJsonParser.getConsumerDmaapModelFromKafkaConsumerRecord(jsonEvent);
    }

    @Override
    public void commitOffset() {
        if(!jsonEvent.isEmpty()){
            jsonEvent.clear();
        }
        if(offset != null){
            offset.acknowledge();
        }
    }

}