BitBar Plugin - Show Crypt Currency Rates to JPY

currency.1m.js

#!/usr/bin/env /path/to/the/node/executable

const https = require('https')

const Currency = {
  Bitcoin: 'btc',
  Ethereum: 'eth',
  EthereumClassic: 'etc',
  Lisk: 'lsk',
  Factom: 'fct',
  Monero: 'xmr',
  Augur: 'rep',
  Ripple: 'xrp',
  Zcash: 'zec',
  NEM: 'xem',
  Litecoin: 'ltc',
  Dash: 'dash',
  BitcoinCash: 'bch'
}

// Please edit this line yourself
const subscribed = [Currency.Bitcoin, Currency.Ethereum]

function getRate(currency) {
  return new Promise((resolve, reject) => {
    https.get(`https://coincheck.com/api/rate/${currency}_jpy/`, (response) => {
      response.setEncoding('utf8')
      response.on('data', (raw) => {
        const data = JSON.parse(raw)
        const rate = parseFloat(data.rate)
        const prettify = (rawRate) => {
          if (rawRate < 100) {
            return rawRate.toFixed(2)
          } else if (1000 <= rawRate) {
            return `${(rawRate / 1000).toPrecision(4)}k`
          } else {
            return rawRate.toFixed()
          }
        }
        resolve(`¥${prettify(rate)}/${currency === 'btc' ? '₿' : currency.toUpperCase()}`)
      });
    }).on('error', (e) => {
      reject(e)
    })
  })
}

async function showRates(currencies) {
  const results = await Promise.all(currencies.map(getRate))
  console.log(results.join(' '))
}

showRates(subscribed)

screenshot.png