Finalize PSBT transaction

finalize_psbt.js

const { Axios } = require("./util/index");

const GetUnspentUtxo = async () => {
  try {
    const response = await Axios("listunspent");
    // console.log(response.data.result);
    return response.data.result;
  } catch (error) {
    console.log(error);
    throw error;
  }
};

const SelectUtxos = async (amount) => {
  const utxos = await GetUnspentUtxo();
  const selectedUtxos = [];
  let currentAmount = 0;
  for (let i = 0; i < utxos.length; i++) {
    let utxo = utxos[i];
    let input = { txid: utxo.txid, vout: utxo.vout };
    currentAmount = currentAmount + utxo.amount * 100000000;
    selectedUtxos.push(input);
    if (currentAmount > amount * 100000000) {
      break;
    }
  }
  return selectedUtxos;
};

const CreatePSBTTransaction = async () => {
  const utxos = await SelectUtxos(0.0001);
  const body = [
    [...utxos],
    [{ tb1qpvf0hh2fmu8pp3mkwwvp38enfwtd534p096vzy: 0.0001 }],
  ];
  try {
    const transaction = await Axios("walletcreatefundedpsbt", body);
    return transaction.data.result.psbt;
  } catch (error) {
    throw error;
  }
};

const SignPsbtTransaction = async (body) => {
  const psbt = await CreatePSBTTransaction();
  try {
    const response = await Axios("walletprocesspsbt", [psbt]);
    return response.data.result.psbt;
  } catch (error) {
    throw error;
  }
};

const FinalizePsbt = async () => {
  const body = await SignPsbtTransaction();
  try {
    const response = await Axios("finalizepsbt", [body]);
    console.log(response.data);
  } catch (error) {
    throw error;
  }
};

FinalizePsbt();