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bitfinex2.js
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'use strict';
// ---------------------------------------------------------------------------
const bitfinex = require ('./bitfinex.js');
const { ExchangeError, NotSupported, InsufficientFunds } = require ('./base/errors');
// ---------------------------------------------------------------------------
module.exports = class bitfinex2 extends bitfinex {
describe () {
return this.deepExtend (super.describe (), {
'id': 'bitfinex2',
'name': 'Bitfinex v2',
'countries': 'VG',
'version': 'v2',
// new metainfo interface
'has': {
'CORS': true,
'createLimitOrder': false,
'createMarketOrder': false,
'createOrder': false,
'deposit': false,
'editOrder': false,
'fetchClosedOrders': false,
'fetchFundingFees': false,
'fetchMyTrades': false,
'fetchOHLCV': true,
'fetchOpenOrders': false,
'fetchOrder': true,
'fetchTickers': true,
'fetchTradingFees': false,
'withdraw': true,
},
'timeframes': {
'1m': '1m',
'5m': '5m',
'15m': '15m',
'30m': '30m',
'1h': '1h',
'3h': '3h',
'6h': '6h',
'12h': '12h',
'1d': '1D',
'1w': '7D',
'2w': '14D',
'1M': '1M',
},
'rateLimit': 1500,
'urls': {
'logo': 'https://user-images.githubusercontent.com/1294454/27766244-e328a50c-5ed2-11e7-947b-041416579bb3.jpg',
'api': 'https://api.bitfinex.com',
'www': 'https://www.bitfinex.com',
'doc': [
'https://bitfinex.readme.io/v2/docs',
'https://github.com/bitfinexcom/bitfinex-api-node',
],
'fees': 'https://www.bitfinex.com/fees',
},
'api': {
'v1': {
'get': [
'symbols',
'symbols_details',
],
},
'public': {
'get': [
'platform/status',
'tickers',
'ticker/{symbol}',
'trades/{symbol}/hist',
'book/{symbol}/{precision}',
'book/{symbol}/P0',
'book/{symbol}/P1',
'book/{symbol}/P2',
'book/{symbol}/P3',
'book/{symbol}/R0',
'stats1/{key}:{size}:{symbol}/{side}/{section}',
'stats1/{key}:{size}:{symbol}/long/last',
'stats1/{key}:{size}:{symbol}/long/hist',
'stats1/{key}:{size}:{symbol}/short/last',
'stats1/{key}:{size}:{symbol}/short/hist',
'candles/trade:{timeframe}:{symbol}/{section}',
'candles/trade:{timeframe}:{symbol}/last',
'candles/trade:{timeframe}:{symbol}/hist',
],
'post': [
'calc/trade/avg',
],
},
'private': {
'post': [
'auth/r/wallets',
'auth/r/orders/{symbol}',
'auth/r/orders/{symbol}/new',
'auth/r/orders/{symbol}/hist',
'auth/r/order/{symbol}:{id}/trades',
'auth/r/trades/{symbol}/hist',
'auth/r/positions',
'auth/r/funding/offers/{symbol}',
'auth/r/funding/offers/{symbol}/hist',
'auth/r/funding/loans/{symbol}',
'auth/r/funding/loans/{symbol}/hist',
'auth/r/funding/credits/{symbol}',
'auth/r/funding/credits/{symbol}/hist',
'auth/r/funding/trades/{symbol}/hist',
'auth/r/info/margin/{key}',
'auth/r/info/funding/{key}',
'auth/r/movements/{currency}/hist',
'auth/r/stats/perf:{timeframe}/hist',
'auth/r/alerts',
'auth/w/alert/set',
'auth/w/alert/{type}:{symbol}:{price}/del',
'auth/calc/order/avail',
],
},
},
'fees': {
'trading': {
'maker': 0.1 / 100,
'taker': 0.2 / 100,
},
'funding': {
'withdraw': {
'BTC': 0.0005,
'BCH': 0.0005,
'ETH': 0.01,
'EOS': 0.1,
'LTC': 0.001,
'OMG': 0.1,
'IOT': 0.0,
'NEO': 0.0,
'ETC': 0.01,
'XRP': 0.02,
'ETP': 0.01,
'ZEC': 0.001,
'BTG': 0.0,
'DASH': 0.01,
'XMR': 0.04,
'QTM': 0.01,
'EDO': 0.5,
'DAT': 1.0,
'AVT': 0.5,
'SAN': 0.1,
'USDT': 5.0,
'SPK': 9.2784,
'BAT': 9.0883,
'GNT': 8.2881,
'SNT': 14.303,
'QASH': 3.2428,
'YYW': 18.055,
},
},
},
});
}
isFiat (code) {
let fiat = {
'USD': 'USD',
'EUR': 'EUR',
};
return (code in fiat);
}
getCurrencyId (code) {
let isFiat = this.isFiat (code);
let prefix = isFiat ? 'f' : 't';
return prefix + code;
}
async fetchMarkets () {
let markets = await this.v1GetSymbolsDetails ();
let result = [];
for (let p = 0; p < markets.length; p++) {
let market = markets[p];
let id = market['pair'].toUpperCase ();
let baseId = id.slice (0, 3);
let quoteId = id.slice (3, 6);
let base = this.commonCurrencyCode (baseId);
let quote = this.commonCurrencyCode (quoteId);
let symbol = base + '/' + quote;
id = 't' + id;
baseId = this.getCurrencyId (baseId);
quoteId = this.getCurrencyId (quoteId);
let precision = {
'price': market['price_precision'],
'amount': market['price_precision'],
};
let limits = {
'amount': {
'min': parseFloat (market['minimum_order_size']),
'max': parseFloat (market['maximum_order_size']),
},
'price': {
'min': Math.pow (10, -precision['price']),
'max': Math.pow (10, precision['price']),
},
};
limits['cost'] = {
'min': limits['amount']['min'] * limits['price']['min'],
'max': undefined,
};
result.push ({
'id': id,
'symbol': symbol,
'base': base,
'quote': quote,
'baseId': baseId,
'quoteId': quoteId,
'active': true,
'precision': precision,
'limits': limits,
'lot': Math.pow (10, -precision['amount']),
'info': market,
});
}
return result;
}
async fetchBalance (params = {}) {
await this.loadMarkets ();
let response = await this.privatePostAuthRWallets ();
let balanceType = this.safeString (params, 'type', 'exchange');
let result = { 'info': response };
for (let b = 0; b < response.length; b++) {
let balance = response[b];
let accountType = balance[0];
let currency = balance[1];
let total = balance[2];
let available = balance[4];
if (accountType === balanceType) {
if (currency[0] === 't')
currency = currency.slice (1);
let uppercase = currency.toUpperCase ();
uppercase = this.commonCurrencyCode (uppercase);
let account = this.account ();
account['free'] = available;
account['total'] = total;
if (account['free'])
account['used'] = account['total'] - account['free'];
result[uppercase] = account;
}
}
return this.parseBalance (result);
}
async fetchOrderBook (symbol, limit = undefined, params = {}) {
await this.loadMarkets ();
let orderbook = await this.publicGetBookSymbolPrecision (this.extend ({
'symbol': this.marketId (symbol),
'precision': 'R0',
}, params));
let timestamp = this.milliseconds ();
let result = {
'bids': [],
'asks': [],
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'nonce': undefined,
};
for (let i = 0; i < orderbook.length; i++) {
let order = orderbook[i];
let price = order[1];
let amount = order[2];
let side = (amount > 0) ? 'bids' : 'asks';
amount = Math.abs (amount);
result[side].push ([ price, amount ]);
}
result['bids'] = this.sortBy (result['bids'], 0, true);
result['asks'] = this.sortBy (result['asks'], 0);
return result;
}
parseTicker (ticker, market = undefined) {
let timestamp = this.milliseconds ();
let symbol = undefined;
if (market)
symbol = market['symbol'];
let length = ticker.length;
let last = ticker[length - 4];
return {
'symbol': symbol,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'high': ticker[length - 2],
'low': ticker[length - 1],
'bid': ticker[length - 10],
'bidVolume': undefined,
'ask': ticker[length - 8],
'askVolume': undefined,
'vwap': undefined,
'open': undefined,
'close': last,
'last': last,
'previousClose': undefined,
'change': ticker[length - 6],
'percentage': ticker[length - 5],
'average': undefined,
'baseVolume': ticker[length - 3],
'quoteVolume': undefined,
'info': ticker,
};
}
async fetchTickers (symbols = undefined, params = {}) {
await this.loadMarkets ();
let tickers = await this.publicGetTickers (this.extend ({
'symbols': this.ids.join (','),
}, params));
let result = {};
for (let i = 0; i < tickers.length; i++) {
let ticker = tickers[i];
let id = ticker[0];
let market = this.markets_by_id[id];
let symbol = market['symbol'];
result[symbol] = this.parseTicker (ticker, market);
}
return result;
}
async fetchTicker (symbol, params = {}) {
await this.loadMarkets ();
let market = this.markets[symbol];
let ticker = await this.publicGetTickerSymbol (this.extend ({
'symbol': market['id'],
}, params));
return this.parseTicker (ticker, market);
}
parseTrade (trade, market) {
let [ id, timestamp, amount, price ] = trade;
let side = (amount < 0) ? 'sell' : 'buy';
if (amount < 0) {
amount = -amount;
}
return {
'id': id.toString (),
'info': trade,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'symbol': market['symbol'],
'type': undefined,
'side': side,
'price': price,
'amount': amount,
};
}
async fetchTrades (symbol, since = undefined, limit = 120, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let request = {
'symbol': market['id'],
'sort': '-1',
'limit': limit, // default = max = 120
};
if (typeof since !== 'undefined')
request['start'] = since;
let response = await this.publicGetTradesSymbolHist (this.extend (request, params));
let trades = this.sortBy (response, 1);
return this.parseTrades (trades, market, undefined, limit);
}
async fetchOHLCV (symbol, timeframe = '1m', since = undefined, limit = 100, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
if (typeof since === 'undefined')
since = this.milliseconds () - this.parseTimeframe (timeframe) * limit * 1000;
let request = {
'symbol': market['id'],
'timeframe': this.timeframes[timeframe],
'sort': 1,
'limit': limit,
'start': since,
};
let response = await this.publicGetCandlesTradeTimeframeSymbolHist (this.extend (request, params));
return this.parseOHLCVs (response, market, timeframe, since, limit);
}
async createOrder (symbol, type, side, amount, price = undefined, params = {}) {
throw new NotSupported (this.id + ' createOrder not implemented yet');
}
cancelOrder (id, symbol = undefined, params = {}) {
throw new NotSupported (this.id + ' cancelOrder not implemented yet');
}
async fetchOrder (id, symbol = undefined, params = {}) {
throw new NotSupported (this.id + ' fetchOrder not implemented yet');
}
async withdraw (currency, amount, address, tag = undefined, params = {}) {
throw new NotSupported (this.id + ' withdraw not implemented yet');
}
async fetchMyTrades (symbol = undefined, since = undefined, limit = 25, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let request = {
'symbol': market['id'],
'limit': limit,
'end': this.seconds (),
};
if (typeof since !== 'undefined')
request['start'] = parseInt (since / 1000);
let response = await this.privatePostAuthRTradesSymbolHist (this.extend (request, params));
// return this.parseTrades (response, market, since, limit); // not implemented yet for bitfinex v2
return response;
}
nonce () {
return this.milliseconds ();
}
sign (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
let request = '/' + this.implodeParams (path, params);
let query = this.omit (params, this.extractParams (path));
if (api === 'v1')
request = api + request;
else
request = this.version + request;
let url = this.urls['api'] + '/' + request;
if (api === 'public') {
if (Object.keys (query).length) {
url += '?' + this.urlencode (query);
}
}
if (api === 'private') {
this.checkRequiredCredentials ();
let nonce = this.nonce ().toString ();
body = this.json (query);
let auth = '/api' + '/' + request + nonce + body;
let signature = this.hmac (this.encode (auth), this.encode (this.secret), 'sha384');
headers = {
'bfx-nonce': nonce,
'bfx-apikey': this.apiKey,
'bfx-signature': signature,
'Content-Type': 'application/json',
};
}
return { 'url': url, 'method': method, 'body': body, 'headers': headers };
}
async request (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
let response = await this.fetch2 (path, api, method, params, headers, body);
if (response) {
if ('message' in response) {
if (response['message'].indexOf ('not enough exchange balance') >= 0)
throw new InsufficientFunds (this.id + ' ' + this.json (response));
throw new ExchangeError (this.id + ' ' + this.json (response));
}
return response;
} else if (response === '') {
throw new ExchangeError (this.id + ' returned empty response');
}
return response;
}
};