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cobinhood.js
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'use strict';
// ---------------------------------------------------------------------------
const Exchange = require ('./base/Exchange');
const { ExchangeError, InsufficientFunds, InvalidNonce, InvalidOrder, PermissionDenied } = require ('./base/errors');
// ---------------------------------------------------------------------------
module.exports = class cobinhood extends Exchange {
describe () {
return this.deepExtend (super.describe (), {
'id': 'cobinhood',
'name': 'COBINHOOD',
'countries': [ 'TW' ],
'rateLimit': 1000 / 10,
'has': {
'fetchCurrencies': true,
'fetchTickers': true,
'fetchOHLCV': true,
'fetchOpenOrders': true,
'fetchClosedOrders': true,
'fetchOrder': true,
'fetchDepositAddress': true,
'createDepositAddress': true,
'withdraw': true,
'fetchMyTrades': true,
},
'requiredCredentials': {
'apiKey': true,
'secret': false,
},
'timeframes': {
// the first two don't seem to work at all
'1m': '1m',
'5m': '5m',
'15m': '15m',
'30m': '30m',
'1h': '1h',
'3h': '3h',
'6h': '6h',
'12h': '12h',
'1d': '1D',
'1w': '7D',
'2w': '14D',
'1M': '1M',
},
'urls': {
'logo': 'https://user-images.githubusercontent.com/1294454/35755576-dee02e5c-0878-11e8-989f-1595d80ba47f.jpg',
'api': {
'web': 'https://api.cobinhood.com/v1',
'ws': 'wss://feed.cobinhood.com',
},
'www': 'https://cobinhood.com',
'doc': 'https://cobinhood.github.io/api-public',
},
'api': {
'system': {
'get': [
'info',
'time',
'messages',
'messages/{message_id}',
],
},
'admin': {
'get': [
'system/messages',
'system/messages/{message_id}',
],
'post': [
'system/messages',
],
'patch': [
'system/messages/{message_id}',
],
'delete': [
'system/messages/{message_id}',
],
},
'public': {
'get': [
'market/tickers',
'market/currencies',
'market/trading_pairs',
'market/orderbooks/{trading_pair_id}',
'market/stats',
'market/tickers/{trading_pair_id}',
'market/trades/{trading_pair_id}',
'chart/candles/{trading_pair_id}',
],
},
'private': {
'get': [
'trading/orders/{order_id}',
'trading/orders/{order_id}/trades',
'trading/orders',
'trading/order_history',
'trading/trades',
'trading/trades/{trade_id}',
'wallet/balances',
'wallet/ledger',
'wallet/deposit_addresses',
'wallet/withdrawal_addresses',
'wallet/withdrawals/{withdrawal_id}',
'wallet/withdrawals',
'wallet/deposits/{deposit_id}',
'wallet/deposits',
],
'post': [
'trading/orders',
'wallet/deposit_addresses',
'wallet/withdrawal_addresses',
'wallet/withdrawals',
],
'delete': [
'trading/orders/{order_id}',
],
},
},
'fees': {
'trading': {
'maker': 0.0,
'taker': 0.0,
},
},
'precision': {
'amount': 8,
'price': 8,
},
'exceptions': {
'insufficient_balance': InsufficientFunds,
'invalid_order_size': InvalidOrder,
'invalid_nonce': InvalidNonce,
'unauthorized_scope': PermissionDenied,
},
'commonCurrencies': {
'SMT': 'SocialMedia.Market',
},
});
}
async fetchCurrencies (params = {}) {
let response = await this.publicGetMarketCurrencies (params);
let currencies = response['result']['currencies'];
let result = {};
for (let i = 0; i < currencies.length; i++) {
let currency = currencies[i];
let id = currency['currency'];
let code = this.commonCurrencyCode (id);
let minUnit = this.safeFloat (currency, 'min_unit');
result[code] = {
'id': id,
'code': code,
'name': currency['name'],
'active': true,
'fiat': false,
'precision': this.precisionFromString (currency['min_unit']),
'limits': {
'amount': {
'min': minUnit,
'max': undefined,
},
'price': {
'min': minUnit,
'max': undefined,
},
'deposit': {
'min': minUnit,
'max': undefined,
},
'withdraw': {
'min': minUnit,
'max': undefined,
},
},
'funding': {
'withdraw': {
'fee': this.safeFloat (currency, 'withdrawal_fee'),
},
'deposit': {
'fee': this.safeFloat (currency, 'deposit_fee'),
},
},
'info': currency,
};
}
return result;
}
async fetchMarkets () {
let response = await this.publicGetMarketTradingPairs ();
let markets = response['result']['trading_pairs'];
let result = [];
for (let i = 0; i < markets.length; i++) {
let market = markets[i];
let id = market['id'];
let [ baseId, quoteId ] = id.split ('-');
let base = this.commonCurrencyCode (baseId);
let quote = this.commonCurrencyCode (quoteId);
let symbol = base + '/' + quote;
let precision = {
'amount': 8,
'price': this.precisionFromString (market['quote_increment']),
};
let active = this.safeValue (market, 'is_active', true);
result.push ({
'id': id,
'symbol': symbol,
'base': base,
'quote': quote,
'baseId': baseId,
'quoteId': quoteId,
'active': active,
'precision': precision,
'limits': {
'amount': {
'min': this.safeFloat (market, 'base_min_size'),
'max': this.safeFloat (market, 'base_max_size'),
},
'price': {
'min': undefined,
'max': undefined,
},
'cost': {
'min': undefined,
'max': undefined,
},
},
'info': market,
});
}
return result;
}
parseTicker (ticker, market = undefined) {
if (typeof market === 'undefined') {
let marketId = this.safeString (ticker, 'trading_pair_id');
market = this.findMarket (marketId);
}
let symbol = undefined;
if (typeof market !== 'undefined')
symbol = market['symbol'];
let timestamp = this.safeInteger (ticker, 'timestamp');
let last = this.safeFloat (ticker, 'last_trade_price');
return {
'symbol': symbol,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'high': this.safeFloat (ticker, '24h_high'),
'low': this.safeFloat (ticker, '24h_low'),
'bid': this.safeFloat (ticker, 'highest_bid'),
'bidVolume': undefined,
'ask': this.safeFloat (ticker, 'lowest_ask'),
'askVolume': undefined,
'vwap': undefined,
'open': undefined,
'close': last,
'last': last,
'previousClose': undefined,
'change': this.safeFloat (ticker, 'percentChanged24hr'),
'percentage': undefined,
'average': undefined,
'baseVolume': this.safeFloat (ticker, '24h_volume'),
'quoteVolume': this.safeFloat (ticker, 'quote_volume'),
'info': ticker,
};
}
async fetchTicker (symbol, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let response = await this.publicGetMarketTickersTradingPairId (this.extend ({
'trading_pair_id': market['id'],
}, params));
let ticker = response['result']['ticker'];
return this.parseTicker (ticker, market);
}
async fetchTickers (symbols = undefined, params = {}) {
await this.loadMarkets ();
let response = await this.publicGetMarketTickers (params);
let tickers = response['result']['tickers'];
let result = [];
for (let i = 0; i < tickers.length; i++) {
result.push (this.parseTicker (tickers[i]));
}
return this.indexBy (result, 'symbol');
}
async fetchOrderBook (symbol, limit = undefined, params = {}) {
await this.loadMarkets ();
let request = {
'trading_pair_id': this.marketId (symbol),
};
if (typeof limit !== 'undefined')
request['limit'] = limit; // 100
let response = await this.publicGetMarketOrderbooksTradingPairId (this.extend (request, params));
return this.parseOrderBook (response['result']['orderbook'], undefined, 'bids', 'asks', 0, 2);
}
parseTrade (trade, market = undefined) {
let symbol = undefined;
if (market)
symbol = market['symbol'];
let timestamp = trade['timestamp'];
let price = this.safeFloat (trade, 'price');
let amount = this.safeFloat (trade, 'size');
let cost = parseFloat (this.costToPrecision (symbol, price * amount));
let side = trade['maker_side'] === 'bid' ? 'sell' : 'buy';
return {
'info': trade,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'symbol': symbol,
'id': trade['id'],
'order': undefined,
'type': undefined,
'side': side,
'price': price,
'amount': amount,
'cost': cost,
'fee': undefined,
};
}
async fetchTrades (symbol, since = undefined, limit = 50, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let response = await this.publicGetMarketTradesTradingPairId (this.extend ({
'trading_pair_id': market['id'],
'limit': limit, // default 20, but that seems too little
}, params));
let trades = response['result']['trades'];
return this.parseTrades (trades, market, since, limit);
}
parseOHLCV (ohlcv, market = undefined, timeframe = '5m', since = undefined, limit = undefined) {
return [
// they say that timestamps are Unix Timestamps in seconds, but in fact those are milliseconds
ohlcv['timestamp'],
parseFloat (ohlcv['open']),
parseFloat (ohlcv['high']),
parseFloat (ohlcv['low']),
parseFloat (ohlcv['close']),
parseFloat (ohlcv['volume']),
];
}
async fetchOHLCV (symbol, timeframe = '1m', since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
//
// they say in their docs that end_time defaults to current server time
// but if you don't specify it, their range limits does not allow you to query anything
//
// they also say that start_time defaults to 0,
// but most calls fail if you do not specify any of end_time
//
// to make things worse, their docs say it should be a Unix Timestamp
// but with seconds it fails, so we set milliseconds (somehow it works that way)
//
let endTime = this.milliseconds ();
let request = {
'trading_pair_id': market['id'],
'timeframe': this.timeframes[timeframe],
'end_time': endTime,
};
if (typeof since !== 'undefined')
request['start_time'] = since;
let response = await this.publicGetChartCandlesTradingPairId (this.extend (request, params));
let ohlcv = response['result']['candles'];
return this.parseOHLCVs (ohlcv, market, timeframe, since, limit);
}
async fetchBalance (params = {}) {
await this.loadMarkets ();
let response = await this.privateGetWalletBalances (params);
let result = { 'info': response };
let balances = response['result']['balances'];
for (let i = 0; i < balances.length; i++) {
let balance = balances[i];
let currency = balance['currency'];
if (currency in this.currencies_by_id)
currency = this.currencies_by_id[currency]['code'];
let account = {
'used': parseFloat (balance['on_order']),
'total': parseFloat (balance['total']),
};
account['free'] = parseFloat (account['total'] - account['used']);
result[currency] = account;
}
return this.parseBalance (result);
}
parseOrderStatus (status) {
let statuses = {
'filled': 'closed',
'rejected': 'closed',
'partially_filled': 'open',
'pending_cancellation': 'open',
'pending_modification': 'open',
'open': 'open',
'new': 'open',
'queued': 'open',
'cancelled': 'canceled',
'triggered': 'triggered',
};
if (status in statuses)
return statuses[status];
return status;
}
parseOrder (order, market = undefined) {
let symbol = undefined;
if (typeof market === 'undefined') {
let marketId = this.safeString (order, 'trading_pair');
marketId = this.safeString (order, 'trading_pair_id', marketId);
market = this.safeValue (this.markets_by_id, marketId);
}
if (typeof market !== 'undefined')
symbol = market['symbol'];
let timestamp = this.safeInteger (order, 'timestamp');
let price = this.safeFloat (order, 'eq_price');
let amount = this.safeFloat (order, 'size');
let filled = this.safeFloat (order, 'filled');
let remaining = undefined;
let cost = undefined;
if (typeof amount !== 'undefined') {
if (typeof filled !== 'undefined') {
remaining = amount - filled;
}
if (typeof filled !== 'undefined' && typeof price !== 'undefined') {
cost = price * filled;
} else if (typeof price !== 'undefined') {
cost = price * amount;
}
}
let status = this.parseOrderStatus (this.safeString (order, 'state'));
let side = this.safeString (order, 'side');
if (side === 'bid') {
side = 'buy';
} else if (side === 'ask') {
side = 'sell';
}
return {
'id': this.safeString (order, 'id'),
'datetime': this.iso8601 (timestamp),
'timestamp': timestamp,
'lastTradeTimestamp': undefined,
'status': status,
'symbol': symbol,
'type': this.safeString (order, 'type'), // market, limit, stop, stop_limit, trailing_stop, fill_or_kill
'side': side,
'price': price,
'cost': cost,
'amount': amount,
'filled': filled,
'remaining': remaining,
'trades': undefined,
'fee': undefined,
'info': order,
};
}
async createOrder (symbol, type, side, amount, price = undefined, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
side = (side === 'sell') ? 'ask' : 'bid';
let request = {
'trading_pair_id': market['id'],
'type': type, // market, limit, stop, stop_limit
'side': side,
'size': this.amountToString (symbol, amount),
};
if (type !== 'market')
request['price'] = this.priceToPrecision (symbol, price);
let response = await this.privatePostTradingOrders (this.extend (request, params));
let order = this.parseOrder (response['result']['order'], market);
let id = order['id'];
this.orders[id] = order;
return order;
}
async cancelOrder (id, symbol = undefined, params = {}) {
let response = await this.privateDeleteTradingOrdersOrderId (this.extend ({
'order_id': id,
}, params));
return this.parseOrder (this.extend (response, {
'id': id,
}));
}
async fetchOrder (id, symbol = undefined, params = {}) {
await this.loadMarkets ();
let response = await this.privateGetTradingOrdersOrderId (this.extend ({
'order_id': id.toString (),
}, params));
return this.parseOrder (response['result']['order']);
}
async fetchOpenOrders (symbol = undefined, since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
let result = await this.privateGetTradingOrders (params);
let orders = this.parseOrders (result['result']['orders'], undefined, since, limit);
if (typeof symbol !== 'undefined')
return this.filterBySymbol (orders, symbol);
return orders;
}
async fetchOrderTrades (id, symbol = undefined, params = {}) {
await this.loadMarkets ();
let response = await this.privateGetTradingOrdersOrderIdTrades (this.extend ({
'order_id': id,
}, params));
let market = (typeof symbol === 'undefined') ? undefined : this.market (symbol);
return this.parseTrades (response['result']['trades'], market);
}
async createDepositAddress (code, params = {}) {
await this.loadMarkets ();
let currency = this.currency (code);
let response = await this.privatePostWalletDepositAddresses ({
'currency': currency['id'],
});
let address = this.safeString (response['result']['deposit_address'], 'address');
this.checkAddress (address);
return {
'currency': code,
'address': address,
'info': response,
};
}
async fetchDepositAddress (code, params = {}) {
await this.loadMarkets ();
let currency = this.currency (code);
let response = await this.privateGetWalletDepositAddresses (this.extend ({
'currency': currency['id'],
}, params));
let addresses = this.safeValue (response['result'], 'deposit_addresses', []);
let address = undefined;
if (addresses.length > 0) {
address = this.safeString (addresses[0], 'address');
}
this.checkAddress (address);
return {
'currency': code,
'address': address,
'info': response,
};
}
async withdraw (code, amount, address, params = {}) {
await this.loadMarkets ();
let currency = this.currency (code);
let response = await this.privatePostWalletWithdrawals (this.extend ({
'currency': currency['id'],
'amount': amount,
'address': address,
}, params));
return {
'id': response['result']['withdrawal_id'],
'info': response,
};
}
async fetchMyTrades (symbol = undefined, since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let request = {};
if (typeof symbol !== 'undefined') {
request['trading_pair_id'] = market['id'];
}
let response = await this.privateGetTradingTrades (this.extend (request, params));
return this.parseTrades (response['result']['trades'], market, since, limit);
}
sign (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
let url = this.urls['api']['web'] + '/' + this.implodeParams (path, params);
let query = this.omit (params, this.extractParams (path));
headers = {};
if (api === 'private') {
this.checkRequiredCredentials ();
// headers['device_id'] = this.apiKey;
headers['nonce'] = this.nonce ().toString ();
headers['Authorization'] = this.apiKey;
}
if (method === 'GET') {
query = this.urlencode (query);
if (query.length)
url += '?' + query;
} else {
headers['Content-type'] = 'application/json; charset=UTF-8';
body = this.json (query);
}
return { 'url': url, 'method': method, 'body': body, 'headers': headers };
}
handleErrors (code, reason, url, method, headers, body) {
if (code < 400 || code >= 600) {
return;
}
if (body[0] !== '{') {
throw new ExchangeError (this.id + ' ' + body);
}
let response = JSON.parse (body);
const feedback = this.id + ' ' + this.json (response);
let errorCode = this.safeValue (response['error'], 'error_code');
if (method === 'DELETE' || method === 'GET') {
if (errorCode === 'parameter_error') {
if (url.indexOf ('trading/orders/') >= 0) {
// Cobinhood returns vague "parameter_error" on fetchOrder() and cancelOrder() calls
// for invalid order IDs as well as orders that are not "open"
throw new InvalidOrder (feedback);
}
}
}
const exceptions = this.exceptions;
if (errorCode in exceptions) {
throw new exceptions[errorCode] (feedback);
}
throw new ExchangeError (feedback);
}
nonce () {
return this.milliseconds ();
}
};