All files / lib/messages DlcIds.ts

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import { BufferReader, BufferWriter } from '@node-dlc/bufio';
 
import { MessageType } from '../MessageType';
import { IDlcMessage } from './DlcMessage';
 
/**
 * DlcIds message contains list of buffers
 */
export class DlcIds implements IDlcMessage {
  public static type = MessageType.DlcIds;
 
  public static deserialize(buf: Buffer): DlcIds {
    const reader = new BufferReader(buf);
 
    const type = Number(reader.readUInt16BE());
 
    switch (type) {
      case MessageType.DlcIdsV0:
        return DlcIds.deserializeV0(buf);
      default:
        throw new Error(`DLC IDs message type must be DlcIdsV0`);
    }
  }
 
  /**
   * Deserializes an dlc_ids message
   * @param buf
   */
  private static deserializeV0(buf: Buffer): DlcIds {
    const instance = new DlcIds();
    const reader = new BufferReader(buf);
 
    reader.readUInt16BE(); // read type
    const idsLen = reader.readBigSize(); // ids length
 
    for (let i = 0; i < idsLen; i++) {
      instance.ids.push(reader.readBytes(32));
    }
 
    return instance;
  }
 
  /**
   * The type for dlc_ids message
   */
  public type = DlcIds.type;
 
  public ids: Buffer[] = [];
 
  /**
   * Serializes the dlc_ids message into a Buffer
   */
  public serialize(): Buffer {
    const writer = new BufferWriter();
    writer.writeUInt16BE(this.type);
    writer.writeBigSize(this.ids.length);
    for (const id of this.ids) {
      writer.writeBytes(id);
    }
 
    return writer.toBuffer();
  }
}
 
// Legacy support - keeping old class name as alias
export const DlcIdsV0 = DlcIds;
export type DlcIdsV0 = DlcIds;