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Текущая директория: /opt/bitgo-express-backup-20251206-1327/node_modules/bitgo/example

Просмотр файла: estimateTransaction.js

//
// Get detailed transaction information prior to sending
//
// This example can be used to retrieve information regarding a transaction for a
// particular amount prior to sending. It can be helpful to know the estimated fee,
// or number of inputs needed to send a particular amount. This example can be used
// to retrieve such information.
//
// Copyright 2016, BitGo, Inc.  All Rights Reserved.
//

var BitGoJS = require('../src/index.js');

if (process.argv.length < 8) {
  console.log("usage:\n\t" + process.argv[0] + " " + process.argv[1] +
    " <user> <pass> <otp> <walletId> <destinationAddress> <amountSatoshis> <feeRate>");

  console.log("user: user email (on test.bitgo.com)");
  console.log("pass: password");
  console.log("otp: one-time password, 0000000 on test");
  console.log("walletId: wallet ID (first address on the wallet)");
  console.log("destinationAddress: the bitcoin address to send coins to");
  console.log("amountSatoshis: number of satoshis to send");
  console.log("feeRate: The fee rate to use in satoshis / kb [optional]");
  process.exit(-1);
}

var user = process.argv[2];
var password = process.argv[3];
var otp = process.argv[4];
var walletId = process.argv[5];
var destinationAddress = process.argv[6];
var amountSatoshis = parseInt(process.argv[7], 10);
var feeRate = undefined;

if (!!process.argv[8]) {
  feeRate = parseInt(process.argv[8], 10);
};

var bitgo = new BitGoJS.BitGo({ env: 'test' });

var getTransactionInfo = function () {

  return bitgo.authenticate({ username: user, password: password, otp: otp })
  .then(function () {
    return bitgo.unlock({ otp: otp })
  })
  .then(function () {

    // Fetch the specified wallet
    return bitgo.wallets().get({ id: walletId })
  })
  .then(function (wallet) {

    // Set recipients
    var recipients = {};
    recipients[destinationAddress] = amountSatoshis;

    // Create the transaction
    return wallet.createTransaction({ recipients: recipients, feeRate: feeRate })
  }).then(function (transaction) {
    console.log('\nEstimated Transaction Info:\n');
    console.log('\tSending from:                        ' + walletId);
    console.log('\tSending to:                          ' + destinationAddress);
    console.log('\tAmount:                              ' + amountSatoshis + ' satoshis');
    console.log('\n\tTotal number of inputs:              ' + transaction.unspents.length);
    console.log('\tTotal number of outputs:             ' + transaction.txInfo.nOutputs);
    console.log('\tBitcoin network fee rate:            ' + transaction.feeRate + ' (satoshis / kb)');
    console.log('\tEstimated transaction size:          ' + transaction.estimatedSize + ' bytes');
    console.log('\tEstimated Bitcoin network fee:       ' + transaction.fee + ' satoshis');
    console.log('\tBitGo fee:                           ' + (transaction.bitgoFee && transaction.bitgoFee.amount || 0) + ' satoshis');
    process.exit(-1);
  })
  .catch(function (err) {
    console.log(err);
    process.exit(-1);
  });
};

getTransactionInfo();

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