binance-value.js

const Binance = require('binance')
const fetch = require('node-fetch')
const binance = new Binance.BinanceRest({
  key: '[REDACTED]',
  secret: '[REDACTED]'
})

function precisionRound(number, precision) {
  const factor = Math.pow(10, precision)
  return Math.round(number * factor) / factor
}

async function getvalue() {
  let account
  let prices
  try {
    account = await binance.account()
    prices = await binance.tickerPrice()
  } catch (e) {
    console.error(e)
  }
  const pricemap = prices.reduce(
    (state, next) =>
      Object.assign(state, { [next.symbol]: parseFloat(next.price) }),
    {}
  )
  const wallet = account.balances
    .map(asset =>
      Object.assign({ asset: asset.asset }, { free: parseFloat(asset.free) })
    )
    .filter(asset => asset.free > 0)
    .map(asset => {
      const price = pricemap[`${asset.asset}BTC`] || 1
      return { ...asset, ...{ btc: price * asset.free } }
    })

  const btc = wallet.reduce((acc, asset) => asset.btc + acc, 0)

  const value = pricemap.BTCUSDT

  const usd = Math.round(value * btc)

  return { btc, usd }
}

function slack(value) {
  const body = `${precisionRound(value.btc, 5)} BTC / ${value.usd} USD`
  fetch(
    'https://hooks.slack.com/services/[REDACTED]',
    { method: 'POST', body: JSON.stringify({ text: body }) }
  )
}

async function main() {
  const value = await getvalue()
  slack(value)
}

try {
  main()
} catch (e) {
  console.error(e)
}