/**
 * Copyright © 2016-2022 The Thingsboard Authors
 *
 * 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.
 */
package org.thingsboard.server.queue.common;

import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import java.util.UUID;

public class AbstractTbQueueTemplate {
    protected static final String REQUEST_ID_HEADER = "requestId";
    protected static final String RESPONSE_TOPIC_HEADER = "responseTopic";
    protected static final String REQUEST_TIME = "requestTime";

    protected byte[] uuidToBytes(UUID uuid) {
        ByteBuffer buf = ByteBuffer.allocate(16);
        buf.putLong(uuid.getMostSignificantBits());
        buf.putLong(uuid.getLeastSignificantBits());
        return buf.array();
    }

    protected static UUID bytesToUuid(byte[] bytes) {
        ByteBuffer bb = ByteBuffer.wrap(bytes);
        long firstLong = bb.getLong();
        long secondLong = bb.getLong();
        return new UUID(firstLong, secondLong);
    }

    protected byte[] stringToBytes(String string) {
        return string.getBytes(StandardCharsets.UTF_8);
    }

    protected String bytesToString(byte[] data) {
        return new String(data, StandardCharsets.UTF_8);
    }

    protected static byte[] longToBytes(long x) {
        ByteBuffer longBuffer = ByteBuffer.allocate(Long.BYTES);
        longBuffer.putLong(0, x);
        return longBuffer.array();
    }

    protected static long bytesToLong(byte[] bytes) {
        return ByteBuffer.wrap(bytes).getLong();
    }
}
