package seng302.Networking.MessageDecoders;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.Arrays;

/**
 * Created by hba56 on 21/04/17.
 */
public class RaceStartStatusDecoder {
    private byte messageVersion;
    private byte[] timestamp;
    private byte[] ackNumber;
    private byte[] raceStartTime;
    private byte[] raceIdentifier;
    private byte notificationType;

    private long time;
    private short ack;
    private long startTime;
    private int raceID;
    private char notification;


    public RaceStartStatusDecoder(byte[] encodedRaceStartStatus) {
        messageVersion = encodedRaceStartStatus[0];
        timestamp = Arrays.copyOfRange(encodedRaceStartStatus, 1, 7);
        ackNumber = Arrays.copyOfRange(encodedRaceStartStatus, 7, 9);
        raceStartTime = Arrays.copyOfRange(encodedRaceStartStatus, 9, 15);
        raceIdentifier = Arrays.copyOfRange(encodedRaceStartStatus, 15, 19);
        notificationType = encodedRaceStartStatus[19];

        time = bytesToLong(timestamp);
        ack = bytesToShort(ackNumber);
        startTime = bytesToLong(raceStartTime);
        raceID = bytesToInt(raceIdentifier);
        notification = byteToChar(notificationType);
    }

    private char byteToChar(byte bytesInt) {
        ByteBuffer byteBuffer = ByteBuffer.allocate(4);
        byteBuffer.order(ByteOrder.BIG_ENDIAN);
        byteBuffer.put((byte) 0);
        byteBuffer.put(bytesInt);
        char num = byteBuffer.getChar(0);
        return num;
    }

    private short bytesToShort(byte[] bytesShort) {
        ByteBuffer wrapped = ByteBuffer.wrap(bytesShort);
        short num = wrapped.getShort();
        return num;
    }

    private int bytesToInt(byte[] bytesInt) {
        ByteBuffer wrapped = ByteBuffer.wrap(bytesInt);
        int num = wrapped.getInt();
        return num;
    }

    private long bytesToLong(byte[] bytesLong) {
        ByteBuffer byteBuffer = ByteBuffer.allocate(8);
        byteBuffer.order(ByteOrder.BIG_ENDIAN);
        byteBuffer.put((byte) 0);
        byteBuffer.put((byte) 0);
        byteBuffer.put(bytesLong[0]);
        byteBuffer.put(bytesLong[1]);
        byteBuffer.put(bytesLong[2]);
        byteBuffer.put(bytesLong[3]);
        byteBuffer.put(bytesLong[4]);
        byteBuffer.put(bytesLong[5]);
        long longVal = byteBuffer.getLong(0);
        return longVal;
    }

    public byte getMessageVersion() {
        return messageVersion;
    }

    public long getTime() {
        return time;
    }

    public short getAck() {
        return ack;
    }

    public long getStartTime() {
        return startTime;
    }

    public int getRaceID() {
        return raceID;
    }

    public char getNotification() {
        return notification;
    }
}