# All files / lib/messages OracleInfoV0.ts

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

    import { MessageType } from '../MessageType';
    import { getTlv } from '../serialize/getTlv';
    import { IDlcMessage } from './DlcMessage';
    import {
      OracleAnnouncementV0,
      OracleAnnouncementV0JSON,
    } from './OracleAnnouncementV0';

    /**
     * OracleInfo contains information about the oracles to be used in
     * executing a DLC.
     */
    export class OracleInfoV0 implements IDlcMessage {
      public static type = MessageType.OracleInfoV0;

      /**
       * Deserializes an oracle_info_v0 message
       * @param buf
       */
      public static deserialize(buf: Buffer): OracleInfoV0 {
        const instance = new OracleInfoV0();
        const reader = new BufferReader(buf);

        reader.readBigSize(); // read type
        instance.length = reader.readBigSize();
        instance.announcement = OracleAnnouncementV0.deserialize(getTlv(reader));

        return instance;
      }

      /**
       * The type for oracle_info_v0 message. oracle_info_v0 = 42770
       */
      public type = OracleInfoV0.type;

      public length: bigint;

      public announcement: OracleAnnouncementV0;

      public validate(): void {
        this.announcement.validate();
      }

      /**
       * Converts oracle_info_v0 to JSON
       */
      public toJSON(): OracleInfoV0JSON {
        return {
          type: this.type,
          announcement: this.announcement.toJSON(),
        };
      }

      /**
       * Serializes the oracle_info_v0 message into a Buffer
       */
      public serialize(): Buffer {
        const writer = new BufferWriter();
        writer.writeBigSize(this.type);

        const dataWriter = new BufferWriter();
        dataWriter.writeBytes(this.announcement.serialize());

        writer.writeBigSize(dataWriter.size);
        writer.writeBytes(dataWriter.toBuffer());

        return writer.toBuffer();
      }
    }

    export interface OracleInfoV0JSON {
      type: number;
      announcement: OracleAnnouncementV0JSON;
    }