bton/contracts/utils.ts

import { Address, Cell, CellMessage, InternalMessage, CommonMessageInfo, WalletContract, SendMode, Wallet } from "ton";
import BN from "bn.js";

// helper for end-to-end on-chain tests (normally post deploy) to allow sending InternalMessages to contracts using a wallet
export async function sendInternalMessageWithWallet(params: { walletContract: WalletContract; secretKey: Buffer; to: Address; value: BN; bounce?: boolean; body?: Cell }) {
  const message = params.body ? new CellMessage(params.body) : undefined;
  const seqno = await params.walletContract.getSeqNo();
  const transfer = params.walletContract.createTransfer({
    secretKey: params.secretKey,
    seqno: seqno,
    sendMode: SendMode.PAY_GAS_SEPARATLY + SendMode.IGNORE_ERRORS,
    order: new InternalMessage({
      to: params.to,
      value: params.value,
      bounce: params.bounce ?? false,
      body: new CommonMessageInfo({
        body: message,
      }),
    }),
  });
  await params.walletContract.client.sendExternalMessage(params.walletContract, transfer);
  for (let attempt = 0; attempt < 10; attempt++) {
    await sleep(2000);
    const seqnoAfter = await params.walletContract.getSeqNo();
    if (seqnoAfter > seqno) return;
  }
}

function sleep(ms: number) {
    return new Promise((resolve) => setTimeout(resolve, ms));
}