package net.minecraft.server.network;

import io.netty.buffer.ByteBuf;
import java.nio.charset.StandardCharsets;

public class LegacyProtocolUtils {
	public static final int CUSTOM_PAYLOAD_PACKET_ID = 250;
	public static final String CUSTOM_PAYLOAD_PACKET_PING_CHANNEL = "MC|PingHost";
	public static final int GET_INFO_PACKET_ID = 254;
	public static final int GET_INFO_PACKET_VERSION_1 = 1;
	public static final int DISCONNECT_PACKET_ID = 255;
	public static final int FAKE_PROTOCOL_VERSION = 127;

	public static void writeLegacyString(final ByteBuf toSend, final String str) {
		toSend.writeShort(str.length());
		toSend.writeCharSequence(str, StandardCharsets.UTF_16BE);
	}

	public static String readLegacyString(final ByteBuf msg) {
		int charCount = msg.readShort();
		int byteCount = charCount * 2;
		String str = msg.toString(msg.readerIndex(), byteCount, StandardCharsets.UTF_16BE);
		msg.skipBytes(byteCount);
		return str;
	}
}