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Refactored some exchange code

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This commit is contained in:
José Oliveira 2021-01-21 11:08:20 +00:00 • committed by Josh Harvey
parent 54a231ab60
commit 134eaaa518
20 changed files with 141 additions and 643 deletions
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86
lib/plugins/common/bitstamp.js
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@ -1,86 +0,0 @@
'use strict'
const querystring = require('querystring')
const axios = require('axios')
const crypto = require('crypto')
const _ = require('lodash/fp')
const API_ENDPOINT = 'https://www.bitstamp.net/api/v2'
let counter = -1
let lastTimestamp = Date.now()
function pad (num) {
const asString = num.toString(10)
if (num < 10) return '00' + asString
if (num < 100) return '0' + asString
return asString
}
function generateNonce () {
const timestamp = Date.now()
if (timestamp !== lastTimestamp) counter = -1
lastTimestamp = timestamp
counter = (counter + 1) % 1000
return timestamp.toString(10) + pad(counter)
}
function authRequest (config, path, data) {
if (!config.key || !config.secret || !config.clientId) {
const err = new Error('Must provide key, secret and client ID')
return Promise.reject(err)
}
data = data || {}
const nonce = generateNonce()
const msg = [nonce, config.clientId, config.key].join('')
const signature = crypto
.createHmac('sha256', Buffer.from(config.secret))
.update(msg)
.digest('hex')
.toUpperCase()
const signedData = _.merge(data, {
key: config.key,
signature: signature,
nonce: nonce
})
return request(path, 'POST', signedData)
}
function buildMarket (fiatCode, cryptoCode) {
if (!_.includes(cryptoCode, ['BTC', 'ETH', 'LTC', 'BCH'])) {
throw new Error('Unsupported crypto: ' + cryptoCode)
}
if (!_.includes(fiatCode, ['USD', 'EUR'])) {
throw new Error('Unsupported fiat: ' + fiatCode)
}
return `${cryptoCode.toLowerCase()}${fiatCode.toLowerCase()}`
}
function request (path, method, data) {
const options = {
method: method,
url: API_ENDPOINT + path + '/',
headers: {
'User-Agent': 'Mozilla/4.0 (compatible; Lamassu client)',
'Content-Type': 'application/x-www-form-urlencoded'
}
}
if (data) options.data = querystring.stringify(data)
return axios(options)
.then(r => r.data)
}
module.exports = {
authRequest,
request,
buildMarket
}

6
lib/plugins/common/ccxt.js
View file

@ -13,16 +13,16 @@ const FIAT = {
kraken: ['USD', 'EUR']
}
module.exports = { verifyCurrencies }
function verifyCurrencies (exchangeName, fiatCode, cryptoCode) {
if (!_.includes(cryptoCode, CRYPTO[exchangeName])) {
throw new Error('Unsupported crypto: ' + cryptoCode)
}
if (!(exchangeName === 'coinbase')) { // coinbase is only used for ticker and it's expected to support most of the fiat
if (exchangeName !== 'coinbase') {
if (!_.includes(fiatCode, FIAT[exchangeName])) {
throw new Error('Unsupported fiat: ' + fiatCode)
}
}
return cryptoCode + '/' + fiatCode
}
module.exports = { verifyCurrencies, CRYPTO, FIAT }

92
lib/plugins/common/itbit.js
View file

@ -1,92 +0,0 @@
'use strict'
const querystring = require('querystring')
const axios = require('axios')
const crypto = require('crypto')
const _ = require('lodash/fp')
const API_ENDPOINT = 'https://api.itbit.com/v1'
let counter = -1
let lastTimestamp = Date.now()
function generateNonce () {
const timestamp = Date.now()
if (timestamp !== lastTimestamp) counter = -1
lastTimestamp = timestamp
counter = (counter + 1) % 1000
return timestamp.toString() + counter.toString()
}
function authRequest (account, method, path, data) {
if (!account.userId || !account.walletId || !account.clientKey || !account.clientSecret) {
const err = new Error('Must provide user ID, wallet ID, client key, and client secret')
return Promise.reject(err)
}
const url = buildURL(method, path, data)
const dataString = method !== 'GET' && !_.isEmpty(data) ? JSON.stringify(data) : ''
const nonce = generateNonce()
const timestamp = Date.now()
const message = nonce + JSON.stringify([method, url, dataString, nonce.toString(), timestamp.toString()])
const hashBuffer = crypto
.createHash('sha256')
.update(message).digest()
const bufferToHash = Buffer.concat([Buffer.from(url), hashBuffer])
const signature = crypto
.createHmac('sha512', Buffer.from(account.clientSecret))
.update(bufferToHash)
.digest('base64')
return request(method, path, data, {
'Authorization': account.clientKey + ':' + signature,
'X-Auth-Timestamp': timestamp,
'X-Auth-Nonce': nonce
})
}
function request (method, path, data, auth) {
const options = {
method: method,
url: buildURL(method, path, data),
headers: {
'User-Agent': 'Lamassu itBit node.js client',
...(auth)
},
...(method !== 'GET' && { data: data })
}
return axios(options)
.then(r => r.data)
.catch(e => {
var description = _.get(e, 'response.data.description')
throw new Error(description || e.message)
})
}
const cryptoCodeTranslations = { 'BTC': 'XBT', 'ETH': 'ETH' }
function buildMarket (fiatCode, cryptoCode) {
const translatedCryptoCode = cryptoCodeTranslations[cryptoCode]
if (!translatedCryptoCode) {
throw new Error('Unsupported crypto: ' + cryptoCode)
}
if (!_.includes(fiatCode, ['USD', 'EUR', 'SGD'])) {
throw new Error('Unsupported fiat: ' + fiatCode)
}
return translatedCryptoCode + fiatCode
}
function buildURL (method, path, data) {
let url = API_ENDPOINT + path
if (method === 'GET' && !_.isEmpty(data)) {
url += '?' + querystring.stringify(data)
}
return url
}
module.exports = { authRequest, request, buildMarket }

28
lib/plugins/common/kraken.js
View file

@ -1,28 +0,0 @@
const PAIRS = {
BTC: {
USD: 'XXBTZUSD',
EUR: 'XXBTZEUR'
},
ETH: {
USD: 'XETHZUSD',
EUR: 'XETHZEUR'
},
ZEC: {
USD: 'XZECZUSD',
EUR: 'XZECZEUR'
},
LTC: {
USD: 'XLTCZUSD',
EUR: 'XLTCZEUR'
},
DASH: {
USD: 'DASHUSD',
EUR: 'DASHEUR'
},
BCH: {
USD: 'BCHUSD',
EUR: 'BCHEUR'
}
}
module.exports = {PAIRS}