import { BufferReader, BufferWriter } from '@node-dlc/bufio';

import { MessageType } from '../MessageType';
import { IWireMessage } from './IWireMessage';

export class ReplyShortChannelIdsEndMessage implements IWireMessage {
  public static deserialize(payload: Buffer): ReplyShortChannelIdsEndMessage {
    const instance = new ReplyShortChannelIdsEndMessage();
    const reader = new BufferReader(payload);

    // read type bytes
    reader.readUInt16BE();

    instance.chainHash = reader.readBytes(32);
    instance.complete = reader.readUInt8() === 1;

    return instance;
  }

  public type: MessageType = MessageType.ReplyShortChannelIdsEnd;
  public chainHash: Buffer;
  public complete: boolean;

  public serialize(): Buffer {
    const len =
      2 + // type
      32 + // chain_hash
      1; // complete

    const writer = new BufferWriter(Buffer.alloc(len));
    writer.writeUInt16BE(this.type);
    writer.writeBytes(this.chainHash);
    writer.writeUInt8(this.complete ? 1 : 0);
    return writer.toBuffer();
  }
}