/*
 * Copyright 2022 DeNA Co., Ltd.
 *
 * 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 packetproxy.quic.value;

import lombok.Value;

import java.nio.ByteBuffer;

@Value(staticConstructor = "of")
public class StreamId {

    static public StreamId parse(ByteBuffer buffer) {
        return StreamId.of(buffer.getLong());
    }

    long id;

    public boolean isClientInitiated() {
        return (this.id & 0x01) == 0;
    }

    public boolean isServerInitiated() {
        return (this.id & 0x01) > 0;
    }

    public boolean isUniDirectional()  {
        return (this.id & 0x02) > 0;
    }

    public boolean isBidirectional() {
        return (this.id & 0x02) == 0;
    }

    public byte[] getBytes() {
        return ByteBuffer.allocate(8).putLong(this.id).array();
    }

    @Override
    public String toString() {
        return String.format("StreamId(%x)", id);
    }

}
