SENG302/racevisionGame/src/main/java/network/MessageDecoders/MarkRoundingDecoder.java

package network.MessageDecoders;


import network.Messages.AC35Data;
import network.Messages.Enums.MarkRoundingBoatStatusEnum;
import network.Messages.Enums.MarkRoundingSideEnum;
import network.Messages.Enums.MarkRoundingTypeEnum;
import network.Messages.MarkRounding;
import network.Utils.ByteConverter;

import java.util.Arrays;

/**
 * Decoder for {@link MarkRounding} messages.
 */
public class MarkRoundingDecoder implements MessageDecoder {

    /**
     * The encoded message.
     */
    private byte[] encodedMessage;

    /**
     * The decoded message.
     */
    private MarkRounding message;


    /**
     * Constructs a decoder to decode a given message.
     */
    public MarkRoundingDecoder() {
    }

    @Override
    public AC35Data decode(byte[] encodedMessage) {
        this.encodedMessage = encodedMessage;

        byte messageVersionNumber = encodedMessage[0];

        byte[] byteTime = Arrays.copyOfRange(encodedMessage, 1, 7);
        long time = ByteConverter.bytesToLong(byteTime);

        byte[] byteAck = Arrays.copyOfRange(encodedMessage, 7, 9);
        int ackNumber = ByteConverter.bytesToInt(byteAck);

        byte[] byteRaceID = Arrays.copyOfRange(encodedMessage, 9, 13);
        int raceID = ByteConverter.bytesToInt(byteRaceID);

        byte[] byteSourceID = Arrays.copyOfRange(encodedMessage, 13, 17);
        int sourceID = ByteConverter.bytesToInt(byteSourceID);

        byte byteBoatStatus = encodedMessage[17];
        MarkRoundingBoatStatusEnum boatStatus = MarkRoundingBoatStatusEnum.fromByte(byteBoatStatus);

        byte byteRoundingSide = encodedMessage[18];
        MarkRoundingSideEnum roundingSide = MarkRoundingSideEnum.fromByte(byteRoundingSide);

        byte byteMarkType = encodedMessage[19];
        MarkRoundingTypeEnum markType = MarkRoundingTypeEnum.fromByte(byteMarkType);

        byte byteMarkID = encodedMessage[20];


        message = new MarkRounding(
                messageVersionNumber,
                time,
                ackNumber,
                raceID,
                sourceID,
                boatStatus,
                roundingSide,
                markType,
                byteMarkID);


        return message;
    }

    /**
     * Returns the decoded message.
     *
     * @return The decoded message.
     */
    public MarkRounding getMessage() {
        return message;
    }

}