/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */
package org.apache.rocketmq.client.core;

import org.apache.rocketmq.client.common.Pair;
import org.apache.rocketmq.client.support.RocketMQMessageConverter;
import org.apache.rocketmq.client.support.RocketMQUtil;
import org.apache.rocketmq.client.apis.ClientException;
import org.apache.rocketmq.client.apis.consumer.SimpleConsumer;
import org.apache.rocketmq.client.apis.consumer.SimpleConsumerBuilder;
import org.apache.rocketmq.client.apis.message.MessageView;
import org.apache.rocketmq.client.apis.producer.Producer;
import org.apache.rocketmq.client.apis.producer.ProducerBuilder;
import org.apache.rocketmq.client.apis.producer.SendReceipt;
import org.apache.rocketmq.client.apis.producer.Transaction;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessagingException;
import org.springframework.messaging.core.AbstractMessageSendingTemplate;
import org.springframework.messaging.support.MessageBuilder;

import java.io.IOException;
import java.time.Duration;
import java.util.List;
import java.util.Objects;
import java.util.concurrent.CompletableFuture;


@SuppressWarnings({"WeakerAccess", "unused"})
public class RocketMQClientTemplate extends AbstractMessageSendingTemplate<String> implements DisposableBean {

    private static final Logger log = LoggerFactory.getLogger(RocketMQClientTemplate.class);

    private ProducerBuilder producerBuilder;

    private SimpleConsumerBuilder simpleConsumerBuilder;

    private volatile Producer producer;

    private volatile SimpleConsumer simpleConsumer;

    private RocketMQMessageConverter rocketMQMessageConverter = new RocketMQMessageConverter();

    private String charset = "UTF-8";

    public Producer getProducer() {
        if (Objects.isNull(producer)) {
            synchronized (RocketMQClientTemplate.class) {
                if (Objects.isNull(producer)) {
                    try {
                        this.producer =  producerBuilder.build();
                    } catch (ClientException e) {
                        throw new RuntimeException(e);
                    }
                }
            }
        }
        return producer;
    }

    public void setProducer(Producer producer) {
        this.producer = producer;
    }


    public SimpleConsumer getSimpleConsumer() {
        if (Objects.isNull(simpleConsumer)) {
            synchronized (RocketMQClientTemplate.class) {
                if (Objects.isNull(simpleConsumer)) {
                    try {
                        this.simpleConsumer = simpleConsumerBuilder.build();
                    } catch (ClientException e) {
                        throw new RuntimeException(e);
                    }
                }
            }
        }
        return simpleConsumer;
    }

    public void setSimpleConsumer(SimpleConsumer simpleConsumer) {
        this.simpleConsumer = simpleConsumer;
    }

    public ProducerBuilder getProducerBuilder() {
        return producerBuilder;
    }

    public void setProducerBuilder(ProducerBuilder producerBuilder) {
        this.producerBuilder = producerBuilder;
    }

    public SimpleConsumerBuilder getSimpleConsumerBuilder() {
        return simpleConsumerBuilder;
    }

    public void setSimpleConsumerBuilder(SimpleConsumerBuilder simpleConsumerBuilder) {
        this.simpleConsumerBuilder = simpleConsumerBuilder;
    }

    public RocketMQMessageConverter getRocketMQMessageConverter() {
        return rocketMQMessageConverter;
    }

    public void setRocketMQMessageConverter(RocketMQMessageConverter rocketMQMessageConverter) {
        this.rocketMQMessageConverter = rocketMQMessageConverter;
    }

    public String getCharset() {
        return charset;
    }

    public void setCharset(String charset) {
        this.charset = charset;
    }


    @Override
    public void destroy() throws Exception {
        if (Objects.nonNull(producer)) {
            producer.close();
        }
        if (Objects.nonNull(simpleConsumer)) {
            simpleConsumer.close();
        }
    }

    @Override
    protected void doSend(String destination, Message<?> message) {
        SendReceipt sendReceipt = syncSendGrpcMessage(destination, message, null, null);
        if (log.isDebugEnabled()) {
            log.debug("send message to `{}` finished. result:{}", destination, sendReceipt);
        }
    }

    /**
     * @param destination      formats: `topicName:tags`
     * @param payload          the payload to be sent
     * @param messageDelayTime Time for message delay
     * @return SendReceipt Synchronous Task Results
     */
    public SendReceipt syncSendDelayMessage(String destination, Object payload, Duration messageDelayTime) {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return syncSendGrpcMessage(destination, message, messageDelayTime, null);
    }

    public SendReceipt syncSendDelayMessage(String destination, String payload, Duration messageDelayTime) {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return syncSendGrpcMessage(destination, message, messageDelayTime, null);
    }

    public SendReceipt syncSendDelayMessage(String destination, byte[] payload, Duration messageDelayTime) {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return syncSendGrpcMessage(destination, message, messageDelayTime, null);
    }

    public SendReceipt syncSendDelayMessage(String destination, Message<?> message, Duration messageDelayTime) {
        return syncSendGrpcMessage(destination, message, messageDelayTime, null);
    }

    public SendReceipt syncSendFifoMessage(String destination, Object payload, String messageGroup) {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return syncSendGrpcMessage(destination, message, null, messageGroup);
    }

    public SendReceipt syncSendFifoMessage(String destination, String payload, String messageGroup) {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return syncSendGrpcMessage(destination, message, null, messageGroup);
    }

    public SendReceipt syncSendFifoMessage(String destination, byte[] payload, String messageGroup) {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return syncSendGrpcMessage(destination, message, null, messageGroup);
    }

    public SendReceipt syncSendFifoMessage(String destination, Message<?> message, String messageGroup) {
        return syncSendGrpcMessage(destination, message, null, messageGroup);
    }

    public SendReceipt syncSendNormalMessage(String destination, Object payload) {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return syncSendGrpcMessage(destination, message, null, null);
    }

    public SendReceipt syncSendNormalMessage(String destination, String payload) {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return syncSendGrpcMessage(destination, message, null, null);
    }

    public SendReceipt syncSendNormalMessage(String destination, Message<?> message) {
        return syncSendGrpcMessage(destination, message, null, null);
    }

    public SendReceipt syncSendNormalMessage(String destination, byte[] payload) {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return syncSendGrpcMessage(destination, message, null, null);
    }

    /**
     * @param destination      formats: `topicName:tags`
     * @param message          {@link Message} the message to be sent.
     * @param messageDelayTime Time for message delay
     * @param messageGroup     message group name
     * @return SendReceipt Synchronous Task Results
     */
    public SendReceipt syncSendGrpcMessage(String destination, Message<?> message, Duration messageDelayTime, String messageGroup) {
        if (Objects.isNull(message) || Objects.isNull(message.getPayload())) {
            throw new IllegalArgumentException("`message` and `message.payload` cannot be null");
        }
        SendReceipt sendReceipt = null;
        try {
            org.apache.rocketmq.client.apis.message.Message rocketMsg = this.createRocketMQMessage(destination, message, messageDelayTime, messageGroup);
            Producer grpcProducer = this.getProducer();
            return grpcProducer.send(rocketMsg);
        } catch (Exception e) {
            throw new MessagingException(e.getMessage(), e);
        }
    }


    public CompletableFuture<SendReceipt> asyncSendWithObjectPayload(String destination, Object payload, Duration messageDelayTime, String messageGroup, CompletableFuture<SendReceipt> future) {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return asyncSend(destination, message, messageDelayTime, messageGroup, future);
    }

    public CompletableFuture<SendReceipt> asyncSendWithStringPayload(String destination, String payload, Duration messageDelayTime, String messageGroup, CompletableFuture<SendReceipt> future) {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return asyncSend(destination, message, messageDelayTime, messageGroup, future);
    }

    public CompletableFuture<SendReceipt> asyncSendWithBytePayload(String destination, byte[] payload, Duration messageDelayTime, String messageGroup, CompletableFuture<SendReceipt> future) {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return asyncSend(destination, message, messageDelayTime, messageGroup, future);
    }

    public CompletableFuture<SendReceipt> asyncSendWithMessagePayload(String destination, Message<?> payload, Duration messageDelayTime, String messageGroup, CompletableFuture<SendReceipt> future) {
        return asyncSend(destination, payload, messageDelayTime, messageGroup, future);
    }

    public CompletableFuture<SendReceipt> asyncSendNormalMessage(String destination, Object payload, CompletableFuture<SendReceipt> future) {
        return asyncSendWithObjectPayload(destination, payload, null, null, future);
    }

    public CompletableFuture<SendReceipt> asyncSendNormalMessage(String destination, String payload, CompletableFuture<SendReceipt> future) {
        return asyncSendWithStringPayload(destination, payload, null, null, future);
    }

    public CompletableFuture<SendReceipt> asyncSendNormalMessage(String destination, byte[] payload, CompletableFuture<SendReceipt> future) {
        return asyncSendWithBytePayload(destination, payload, null, null, future);
    }

    public CompletableFuture<SendReceipt> asyncSendNormalMessage(String destination, Message<?> payload, CompletableFuture<SendReceipt> future) {
        return asyncSendWithMessagePayload(destination, payload, null, null, future);
    }

    public CompletableFuture<SendReceipt> asyncSendFifoMessage(String destination, Object payload, String messageGroup, CompletableFuture<SendReceipt> future) {
        return asyncSendWithObjectPayload(destination, payload, null, messageGroup, future);
    }

    public CompletableFuture<SendReceipt> asyncSendFifoMessage(String destination, String payload, String messageGroup, CompletableFuture<SendReceipt> future) {
        return asyncSendWithStringPayload(destination, payload, null, messageGroup, future);
    }

    public CompletableFuture<SendReceipt> asyncSendFifoMessage(String destination, byte[] payload, String messageGroup, CompletableFuture<SendReceipt> future) {
        return asyncSendWithBytePayload(destination, payload, null, messageGroup, future);
    }

    public CompletableFuture<SendReceipt> asyncSendFifoMessage(String destination, Message<?> payload, String messageGroup, CompletableFuture<SendReceipt> future) {
        return asyncSendWithMessagePayload(destination, payload, null, messageGroup, future);
    }

    public CompletableFuture<SendReceipt> asyncSendDelayMessage(String destination, Object payload, Duration messageDelayTime, CompletableFuture<SendReceipt> future) {
        return asyncSendWithObjectPayload(destination, payload, messageDelayTime, null, future);
    }

    public CompletableFuture<SendReceipt> asyncSendDelayMessage(String destination, String payload, Duration messageDelayTime, CompletableFuture<SendReceipt> future) {
        return asyncSendWithStringPayload(destination, payload, messageDelayTime, null, future);
    }

    public CompletableFuture<SendReceipt> asyncSendDelayMessage(String destination, byte[] payload, Duration messageDelayTime, CompletableFuture<SendReceipt> future) {
        return asyncSendWithBytePayload(destination, payload, messageDelayTime, null, future);
    }

    public CompletableFuture<SendReceipt> asyncSendDelayMessage(String destination, Message<?> payload, Duration messageDelayTime, CompletableFuture<SendReceipt> future) {
        return asyncSendWithMessagePayload(destination, payload, messageDelayTime, null, future);
    }

    public CompletableFuture<SendReceipt> asyncSend(String destination, Message<?> message, Duration messageDelayTime, String messageGroup, CompletableFuture<SendReceipt> future) {
        if (Objects.isNull(message) || Objects.isNull(message.getPayload())) {
            throw new IllegalArgumentException("`message` and `message.payload` cannot be null");
        }
        Producer grpcProducer = this.getProducer();
        CompletableFuture<SendReceipt> future0;
        try {
            org.apache.rocketmq.client.apis.message.Message rocketMsg = this.createRocketMQMessage(destination, message, messageDelayTime, messageGroup);
            future0 = grpcProducer.sendAsync(rocketMsg);
            if (null != future) {
                future0.whenComplete((sendReceipt, throwable) -> {
                    if (null != throwable) {
                        future.completeExceptionally(throwable);
                    } else {
                        future.complete(sendReceipt);
                    }
                });
            }
        } catch (Exception e) {
            throw new MessagingException(e.getMessage(), e);
        }
        return future0;
    }

    public Pair<SendReceipt, Transaction> sendMessageInTransaction(String destination, Object payload) throws ClientException {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return sendTransactionMessage(destination, message);
    }

    public Pair<SendReceipt, Transaction> sendMessageInTransaction(String destination, String payload) throws ClientException {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return sendTransactionMessage(destination, message);
    }

    public Pair<SendReceipt, Transaction> sendMessageInTransaction(String destination, byte[] payload) throws ClientException {
        Message<?> message = MessageBuilder.withPayload(payload).build();
        return sendTransactionMessage(destination, message);
    }


    /**
     * @param destination formats: `topicName:tags`
     * @param message     {@link Message} the message to be sent.
     * @return CompletableFuture<SendReceipt> Asynchronous Task Results
     */
    public Pair<SendReceipt, Transaction> sendTransactionMessage(String destination, Message<?> message) {
        if (Objects.isNull(message) || Objects.isNull(message.getPayload())) {
            throw new IllegalArgumentException("`message` and `message.payload` cannot be null");
        }
        final SendReceipt sendReceipt;
        Producer grpcProducer = this.getProducer();
        org.apache.rocketmq.client.apis.message.Message rocketMsg = this.createRocketMQMessage(destination, message, null, null);
        final Transaction transaction;
        try {
            transaction = grpcProducer.beginTransaction();
            sendReceipt = grpcProducer.send(rocketMsg, transaction);
        } catch (ClientException e) {
            throw new RuntimeException(e);
        }
        return new Pair<>(sendReceipt, transaction);
    }


    public List<MessageView> receive(int maxMessageNum, Duration invisibleDuration) throws ClientException {
        SimpleConsumer simpleConsumer = this.getSimpleConsumer();
        return simpleConsumer.receive(maxMessageNum, invisibleDuration);
    }


    public CompletableFuture<List<MessageView>> receiveAsync(int maxMessageNum, Duration invisibleDuration) throws ClientException, IOException {
        SimpleConsumer simpleConsumer = this.getSimpleConsumer();
        CompletableFuture<List<MessageView>> listCompletableFuture = simpleConsumer.receiveAsync(maxMessageNum, invisibleDuration);
        simpleConsumer.close();
        return listCompletableFuture;
    }


    public void ack(MessageView message) throws ClientException {
        SimpleConsumer simpleConsumer = this.getSimpleConsumer();
        simpleConsumer.ack(message);
    }


    public CompletableFuture<Void> ackAsync(MessageView messageView) {
        SimpleConsumer simpleConsumer = this.getSimpleConsumer();
        return simpleConsumer.ackAsync(messageView);
    }


    private org.apache.rocketmq.client.apis.message.Message createRocketMQMessage(String destination, Message<?> message, Duration messageDelayTime, String messageGroup) {
        Message<?> msg = this.doConvert(message.getPayload(), message.getHeaders(), null);
        return RocketMQUtil.convertToClientMessage(getMessageConverter(), charset,
                destination, msg, messageDelayTime, messageGroup);
    }


}
