/*
 * 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.kafka.common.requests;

import org.apache.kafka.common.network.NetworkSend;
import org.apache.kafka.common.network.Send;
import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.protocol.types.Struct;

import java.nio.ByteBuffer;

public abstract class AbstractResponse extends AbstractRequestResponse {
    public static final int DEFAULT_THROTTLE_TIME = 0;

    public Send toSend(String destination, RequestHeader requestHeader) {
        return toSend(destination, requestHeader.apiVersion(), requestHeader.toResponseHeader());
    }

    /**
     * This should only be used if we need to return a response with a different version than the request, which
     * should be very rare (an example is @link {@link ApiVersionsResponse#unsupportedVersionSend(String, RequestHeader)}).
     * Typically {@link #toSend(String, RequestHeader)} should be used.
     */
    public Send toSend(String destination, short version, ResponseHeader responseHeader) {
        return new NetworkSend(destination, serialize(version, responseHeader));
    }

    /**
     * Visible for testing, typically {@link #toSend(String, RequestHeader)} should be used instead.
     */
    public ByteBuffer serialize(short version, ResponseHeader responseHeader) {
        return serialize(responseHeader.toStruct(), toStruct(version));
    }

    protected abstract Struct toStruct(short version);

    public static AbstractResponse getResponse(ApiKeys apiKey, Struct struct) {
        switch (apiKey) {
            case PRODUCE:
                return new ProduceResponse(struct);
            case FETCH:
                return new FetchResponse(struct);
            case LIST_OFFSETS:
                return new ListOffsetResponse(struct);
            case METADATA:
                return new MetadataResponse(struct);
            case OFFSET_COMMIT:
                return new OffsetCommitResponse(struct);
            case OFFSET_FETCH:
                return new OffsetFetchResponse(struct);
            case FIND_COORDINATOR:
                return new FindCoordinatorResponse(struct);
            case JOIN_GROUP:
                return new JoinGroupResponse(struct);
            case HEARTBEAT:
                return new HeartbeatResponse(struct);
            case LEAVE_GROUP:
                return new LeaveGroupResponse(struct);
            case SYNC_GROUP:
                return new SyncGroupResponse(struct);
            case STOP_REPLICA:
                return new StopReplicaResponse(struct);
            case CONTROLLED_SHUTDOWN_KEY:
                return new ControlledShutdownResponse(struct);
            case UPDATE_METADATA_KEY:
                return new UpdateMetadataResponse(struct);
            case LEADER_AND_ISR:
                return new LeaderAndIsrResponse(struct);
            case DESCRIBE_GROUPS:
                return new DescribeGroupsResponse(struct);
            case LIST_GROUPS:
                return new ListGroupsResponse(struct);
            case SASL_HANDSHAKE:
                return new SaslHandshakeResponse(struct);
            case API_VERSIONS:
                return new ApiVersionsResponse(struct);
            case CREATE_TOPICS:
                return new CreateTopicsResponse(struct);
            case DELETE_TOPICS:
                return new DeleteTopicsResponse(struct);
            case DELETE_RECORDS:
                return new DeleteRecordsResponse(struct);
            case INIT_PRODUCER_ID:
                return new InitProducerIdResponse(struct);
            case OFFSET_FOR_LEADER_EPOCH:
                return new OffsetsForLeaderEpochResponse(struct);
            case ADD_PARTITIONS_TO_TXN:
                return new AddPartitionsToTxnResponse(struct);
            case ADD_OFFSETS_TO_TXN:
                return new AddOffsetsToTxnResponse(struct);
            case END_TXN:
                return new EndTxnResponse(struct);
            case WRITE_TXN_MARKERS:
                return new WriteTxnMarkersResponse(struct);
            case TXN_OFFSET_COMMIT:
                return new TxnOffsetCommitResponse(struct);
            case DESCRIBE_ACLS:
                return new DescribeAclsResponse(struct);
            case CREATE_ACLS:
                return new CreateAclsResponse(struct);
            case DELETE_ACLS:
                return new DeleteAclsResponse(struct);
            case DESCRIBE_CONFIGS:
                return new DescribeConfigsResponse(struct);
            case ALTER_CONFIGS:
                return new AlterConfigsResponse(struct);
            default:
                throw new AssertionError(String.format("ApiKey %s is not currently handled in `getResponse`, the " +
                        "code should be updated to do so.", apiKey));
        }
    }

}