#!/usr/bin/env node

Simple AE Token Spending Script

This script shows how to use the Wallet module from the SDK to send AE to other addresses.

/*
 * ISC License (ISC)
 * Copyright (c) 2018 aeternity developers
 *
 *  Permission to use, copy, modify, and/or distribute this software for any
 *  purpose with or without fee is hereby granted, provided that the above
 *  copyright notice and this permission notice appear in all copies.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
 *  REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 *  AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
 *  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 *  LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
 *  OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 *  PERFORMANCE OF THIS SOFTWARE.
 */

'use strict'

We'll need the main client module Ae in the Universal flavor from the SDK.

const { Universal: Ae, Node } = require('@aeternity/aepp-sdk')
const program = require('commander')

async function spend (receiver, amount, { host, debug }) {

This code is relatively simple: We create the Ae client asynchronously and invoke the spend method on it. Passing in process from nodejs will make the implementation grab the key pair from the WALLET_PRIV and WALLET_PUB environment variables, respectively.

  const node = await Node({ url: host })
  Ae({ nodes: [{ name: 'local', instance: node }], debug, process })
    .then(ae => ae.spend(parseInt(amount), receiver))
    .then(tx => console.log('Transaction mined', tx))
    .catch(e => console.log(e.message))
}

Command Line Interface

The commander library provides maximum command line parsing convenience.

program.version('0.1.0')

program
  .command('spend <receiver> <amount>')
  .option('-H, --host [hostname]', 'Node to connect to', 'http://localhost:3013')
  .option('--debug', 'Switch on debugging')
  .action(spend)

program.parse(process.argv)
if (program.args.length === 0) program.help()