47 lines
1.4 KiB
JavaScript
47 lines
1.4 KiB
JavaScript
require('es6-promise').polyfill()
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var axios = require('axios')
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var _ = require('lodash')
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var BigNumber = require('bignumber.js')
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BigNumber.config({DECIMAL_PLACES: 40})
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exports.NAME = 'Kraken'
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exports.SUPPORTED_MODULES = ['ticker']
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exports.config = function config (localConfig) {
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}
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function findCurrency (fxRates, currency) {
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return new BigNumber(_.find(fxRates, function (r) { return r.code === currency }).rate)
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}
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exports.ticker = function ticker (currencies, cryptoCoin, callback) {
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return axios.get('https://bitpay.com/api/rates')
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.then(function (response) {
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var fxRates = response.data
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return axios.get('https://api.kraken.com/0/public/Ticker?pair=ETHUSD')
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.then(function (response2) {
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var usdRate = findCurrency(fxRates, 'USD')
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var rates = response2.data.result.XETHZUSD
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var res = {}
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var cryptoCoinFactor = new BigNumber(10).pow(cryptoCoin.unitScale)
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currencies.forEach(function (currency) {
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var fxRate = findCurrency(fxRates, currency).div(usdRate)
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res[currency] = {
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ask: fxRate.times(rates.a[0]).div(cryptoCoinFactor),
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bid: fxRate.times(rates.b[0]).div(cryptoCoinFactor)
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}
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})
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callback(null, res)
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})
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})
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.catch(callback)
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}
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exports.ticker(['USD', 'ILS', 'EUR'], {unitScale: 18}, function (err, res) {
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if (err) return console.log(err.stack)
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console.log(JSON.stringify(res, null, 2))
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})
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