gradido/dlt-connector/src/data/proto/3_3/GradidoTransaction.ts

import { Field, Message } from 'protobufjs'

import { LogError } from '@/server/LogError'

import { SignatureMap } from './SignatureMap'
import { SignaturePair } from './SignaturePair'
import { TransactionBody } from './TransactionBody'

// https://www.npmjs.com/package/@apollo/protobufjs
// eslint-disable-next-line no-use-before-define
export class GradidoTransaction extends Message<GradidoTransaction> {
  constructor(body?: TransactionBody) {
    if (body) {
      super({
        sigMap: new SignatureMap(),
        bodyBytes: Buffer.from(TransactionBody.encode(body).finish()),
      })
    } else {
      super()
    }
  }

  @Field.d(1, SignatureMap)
  public sigMap: SignatureMap

  // inspired by Hedera
  // bodyBytes are the payload for signature
  // bodyBytes are serialized TransactionBody
  @Field.d(2, 'bytes')
  public bodyBytes: Buffer

  // if it is a cross group transaction the parent message
  // id from outbound transaction or other by cross
  @Field.d(3, 'bytes')
  public parentMessageId?: Buffer

  getFirstSignature(): SignaturePair {
    const sigPair = this.sigMap.sigPair
    if (sigPair.length !== 1) {
      throw new LogError("signature count don't like expected")
    }
    return sigPair[0]
  }

  getTransactionBody(): TransactionBody {
    return TransactionBody.fromBodyBytes(this.bodyBytes)
  }
}