Add QuadrigaCX exchange and ticker (#176)

* Add QuadrigaCX exchange and ticker

* Clean up code from QuadrigaCX

.vscode/launch.json

@@ -11,6 +11,12 @@
       "program": "${workspaceRoot}/bin/lamassu-server",
       "cwd": "${workspaceRoot}",
       "args": ["--mockSms"]
+    },
+    {
+      "type": "node",
+      "request": "attach",
+      "name": "Attach by Process ID",
+      "processId": "${command:PickProcess}"
     }
   ]
 }

lib/admin/config.js

@@ -172,6 +172,7 @@ function fetchData () {
         {code: 'kraken', display: 'Kraken', class: 'ticker', cryptos: ['BTC', 'ETH', 'LTC', 'DASH', 'ZEC', 'BCH']},
         {code: 'bitstamp', display: 'Bitstamp', class: 'ticker', cryptos: ['BTC', 'ETH', 'LTC', 'BCH']},
         {code: 'coinbase', display: 'Coinbase', class: 'ticker', cryptos: ['BTC', 'ETH', 'LTC', 'BCH']},
+        {code: 'quadrigacx', display: 'QuadrigaCX', class: 'ticker', cryptos: ['BTC', 'ETH', 'LTC', 'BCH']},
         {code: 'mock-ticker', display: 'Mock ticker', class: 'ticker', cryptos: ALL_CRYPTOS},
         {code: 'bitcoind', display: 'bitcoind', class: 'wallet', cryptos: ['BTC']},
         {code: 'no-layer2', display: 'No Layer 2', class: 'layer2', cryptos: ALL_CRYPTOS},
@@ -184,6 +185,7 @@ function fetchData () {
         {code: 'bitgo', display: 'BitGo', class: 'wallet', cryptos: ['BTC']},
         {code: 'bitstamp', display: 'Bitstamp', class: 'exchange', cryptos: ['BTC', 'ETH', 'LTC', 'BCH']},
         {code: 'kraken', display: 'Kraken', class: 'exchange', cryptos: ['BTC', 'ETH', 'LTC', 'DASH', 'ZEC', 'BCH']},
+        {code: 'quadrigacx', display: 'QuadrigaCX', class: 'exchange', cryptos: ['BTC', 'ETH', 'LTC', 'BCH']},
         {code: 'mock-wallet', display: 'Mock (Caution!)', class: 'wallet', cryptos: ALL_CRYPTOS},
         {code: 'no-exchange', display: 'No exchange', class: 'exchange', cryptos: ALL_CRYPTOS},
         {code: 'mock-exchange', display: 'Mock exchange', class: 'exchange', cryptos: ALL_CRYPTOS},
@@ -194,7 +196,7 @@ function fetchData () {
         {code: 'all-zero-conf', display: 'Always 0-conf', class: 'zeroConf', cryptos: ['BTC', 'ZEC', 'LTC', 'DASH', 'BCH']},
         {code: 'no-zero-conf', display: 'Always 1-conf', class: 'zeroConf', cryptos: ALL_CRYPTOS},
         {code: 'blockcypher', display: 'Blockcypher', class: 'zeroConf', cryptos: ['BTC']},
-        {code: 'mock-zero-conf', display: 'Mock 0-conf', class: 'zeroConf', cryptos: ['BTC', 'ZEC', 'LTC', 'DASH', 'BCH']}
+        {code: 'mock-zero-conf', display: 'Mock 0-conf', class: 'zeroConf', cryptos: ['BTC', 'ZEC', 'LTC', 'DASH', 'BCH', 'ETH']}
       ],
       machines: machineList.map(machine => ({machine: machine.deviceId, display: machine.name}))
     }))

lib/plugins/common/quadrigacx.js

@@ -0,0 +1,91 @@
+const axios = require('axios')
+const crypto = require('crypto')
+const _ = require('lodash/fp')
+
+const API_ENDPOINT = 'https://api.quadrigacx.com/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')
+    .toLowerCase()
+
+  const signedData = _.merge(data, {
+    key: config.key,
+    signature,
+    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', 'CAD'])) {
+    throw new Error(`Unsupported fiat: ${fiatCode}`)
+  }
+
+  let market = `${cryptoCode.toLowerCase()}_${fiatCode.toLowerCase()}`
+
+  if (fiatCode === 'USD' && cryptoCode !== 'BTC') {
+    throw new Error(`Unsupported market: ${market}`)
+  }
+
+  return market
+}
+
+function request (path, method, data) {
+  const options = {
+    method,
+    data,
+    url: API_ENDPOINT + path,
+    headers: {
+      'User-Agent': 'Mozilla/4.0 (compatible; Lamassu client)',
+      'Content-Type': 'application/json; charset=utf-8'
+    }
+  }
+
+  return axios(options)
+    .then(r => {
+      if (r.data.error) throw new Error(r.data.error.message)
+      return r.data
+    })
+}
+
+module.exports = {
+  buildMarket,
+  authRequest,
+  request
+}

lib/plugins/exchange/quadrigacx/quadrigacx.js

@@ -0,0 +1,28 @@
+const common = require('../../common/quadrigacx')
+const coinUtils = require('../../../coin-utils')
+
+function buy (account, cryptoAtoms, fiatCode, cryptoCode) {
+  return trade('buy', account, cryptoAtoms, fiatCode, cryptoCode)
+}
+
+function sell (account, cryptoAtoms, fiatCode, cryptoCode) {
+  return trade('sell', account, cryptoAtoms, fiatCode, cryptoCode)
+}
+
+function trade (type, account, cryptoAtoms, fiatCode, cryptoCode) {
+  return Promise.resolve()
+  .then(() => {
+    const market = common.buildMarket(fiatCode, cryptoCode)
+    const options = {
+      book: market,
+      amount: coinUtils.toUnit(cryptoAtoms, cryptoCode).toFixed(8)
+    }
+    
+    return common.authRequest(account, '/' + type, options)
+  })
+}
+
+module.exports = {
+  buy,
+  sell
+}

lib/plugins/ticker/quadrigacx/quadrigacx.js

@@ -0,0 +1,49 @@
+const axios = require('axios')
+const _ = require('lodash/fp')
+
+const BN = require('../../../bn')
+const common = require('../../common/quadrigacx')
+
+exports.NAME = 'QuadrigaCX'
+exports.SUPPORTED_MODULES = ['ticker']
+
+function findCurrency (fxRates, fiatCode) {
+  const rates = _.find(_.matchesProperty('code', fiatCode), fxRates)
+  if (!rates || !rates.rate) throw new Error(`Unsupported currency: ${fiatCode}`)
+  return BN(rates.rate)
+}
+
+exports.ticker = function ticker (account, fiatCode, cryptoCode) {
+  if (fiatCode === 'USD' && cryptoCode === 'BTC' || fiatCode === 'CAD') {
+    return getCurrencyRates(fiatCode, cryptoCode)
+  }
+
+  return axios.get('https://bitpay.com/api/rates')
+    .then(response => {
+      const fxRates = response.data
+      const cadRate = findCurrency(fxRates, 'CAD')
+      const fxRate = findCurrency(fxRates, fiatCode).div(cadRate)
+
+      return getCurrencyRates('CAD', cryptoCode)
+        .then(res => ({
+          rates: {
+            ask: res.rates.ask.times(fxRate),
+            bid: res.rates.bid.times(fxRate)
+          }
+        }))
+    })
+}
+
+function getCurrencyRates (fiatCode, cryptoCode) {
+  return Promise.resolve()
+    .then(() => {
+      const market = common.buildMarket(fiatCode, cryptoCode)
+      return common.request(`/ticker?book=${market}`, 'GET')
+    })
+    .then(r => ({
+      rates: {
+        ask: BN(r.ask),
+        bid: BN(r.bid)
+      }
+    }))
+}

public/elm.js

@@ -5759,11 +5759,17 @@ var _elm_lang$core$Platform$Router = {ctor: 'Router'};
 
 var _NoRedInk$elm_decode_pipeline$Json_Decode_Pipeline$decode = _elm_lang$core$Json_Decode$succeed;
 var _NoRedInk$elm_decode_pipeline$Json_Decode_Pipeline$resolve = _elm_lang$core$Json_Decode$andThen(_elm_lang$core$Basics$identity);
-var _NoRedInk$elm_decode_pipeline$Json_Decode_Pipeline$custom = _elm_lang$core$Json_Decode$map2(
-	F2(
-		function (x, y) {
-			return y(x);
-		}));
+var _NoRedInk$elm_decode_pipeline$Json_Decode_Pipeline$custom = F2(
+	function (decoder, wrapped) {
+		return A3(
+			_elm_lang$core$Json_Decode$map2,
+			F2(
+				function (x, y) {
+					return x(y);
+				}),
+			wrapped,
+			decoder);
+	});
 var _NoRedInk$elm_decode_pipeline$Json_Decode_Pipeline$hardcoded = function (_p0) {
 	return _NoRedInk$elm_decode_pipeline$Json_Decode_Pipeline$custom(
 		_elm_lang$core$Json_Decode$succeed(_p0));
@@ -5795,7 +5801,15 @@ var _NoRedInk$elm_decode_pipeline$Json_Decode_Pipeline$optionalDecoder = F3(
 					return _elm_lang$core$Json_Decode$fail(_p2._0);
 				}
 			} else {
-				return _elm_lang$core$Json_Decode$succeed(fallback);
+				var _p3 = A2(
+					_elm_lang$core$Json_Decode$decodeValue,
+					_elm_lang$core$Json_Decode$keyValuePairs(_elm_lang$core$Json_Decode$value),
+					input);
+				if (_p3.ctor === 'Ok') {
+					return _elm_lang$core$Json_Decode$succeed(fallback);
+				} else {
+					return _elm_lang$core$Json_Decode$fail(_p3._0);
+				}
 			}
 		};
 		return A2(_elm_lang$core$Json_Decode$andThen, handleResult, _elm_lang$core$Json_Decode$value);
@@ -37734,19 +37748,28 @@ var _user$project$NavBar$view = F2(
 																ctor: '::',
 																_0: {
 																	ctor: '_Tuple3',
-																	_0: 'Strike',
-																	_1: _user$project$CoreTypes$AccountRoute('strike'),
+																	_0: 'QuadrigaCX',
+																	_1: _user$project$CoreTypes$AccountRoute('quadrigacx'),
 																	_2: true
 																},
 																_1: {
 																	ctor: '::',
 																	_0: {
 																		ctor: '_Tuple3',
-																		_0: 'Twilio',
-																		_1: _user$project$CoreTypes$AccountRoute('twilio'),
+																		_0: 'Strike',
+																		_1: _user$project$CoreTypes$AccountRoute('strike'),
 																		_2: true
 																	},
-																	_1: {ctor: '[]'}
+																	_1: {
+																		ctor: '::',
+																		_0: {
+																			ctor: '_Tuple3',
+																			_0: 'Twilio',
+																			_1: _user$project$CoreTypes$AccountRoute('twilio'),
+																			_2: true
+																		},
+																		_1: {ctor: '[]'}
+																	}
 																}
 															}
 														}

schemas/quadrigacx.json

@@ -0,0 +1,27 @@
+{
+  "code": "quadrigacx",
+  "display": "QuadrigaCX",
+  "fields": [
+    {
+      "code": "clientId",
+      "display": "Client ID",
+      "fieldType": "string",
+      "required": true,
+      "value": ""
+    },
+    {
+      "code": "key",
+      "display": "API key",
+      "fieldType": "string",
+      "required": true,
+      "value": ""
+    },
+    {
+      "code": "secret",
+      "display": "API secret",
+      "fieldType": "password",
+      "required": true,
+      "value": ""
+    }
+  ]
+}