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bitstamp.js
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"use strict";
// ---------------------------------------------------------------------------
const Exchange = require ('./base/Exchange')
const { ExchangeError, AuthenticationError } = require ('./base/errors')
// ---------------------------------------------------------------------------
module.exports = class bitstamp extends Exchange {
describe () {
return this.deepExtend (super.describe (), {
'id': 'bitstamp',
'name': 'Bitstamp',
'countries': 'GB',
'rateLimit': 1000,
'version': 'v2',
'hasCORS': false,
'hasFetchOrder': true,
'hasWithdraw': true,
'urls': {
'logo': 'https://user-images.githubusercontent.com/1294454/27786377-8c8ab57e-5fe9-11e7-8ea4-2b05b6bcceec.jpg',
'api': 'https://www.bitstamp.net/api',
'www': 'https://www.bitstamp.net',
'doc': 'https://www.bitstamp.net/api',
},
'requiredCredentials': {
'apiKey': true,
'secret': true,
'uid': true,
},
'api': {
'public': {
'get': [
'order_book/{pair}/',
'ticker_hour/{pair}/',
'ticker/{pair}/',
'transactions/{pair}/',
'trading-pairs-info/',
],
},
'private': {
'post': [
'balance/',
'balance/{pair}/',
'bch_withdrawal/',
'bch_address/',
'user_transactions/',
'user_transactions/{pair}/',
'open_orders/all/',
'open_orders/{pair}/',
'order_status/',
'cancel_order/',
'buy/{pair}/',
'buy/market/{pair}/',
'sell/{pair}/',
'sell/market/{pair}/',
'ltc_withdrawal/',
'ltc_address/',
'eth_withdrawal/',
'eth_address/',
'transfer-to-main/',
'transfer-from-main/',
'withdrawal/open/',
'withdrawal/status/',
'withdrawal/cancel/',
'liquidation_address/new/',
'liquidation_address/info/',
],
},
'v1': {
'post': [
'bitcoin_deposit_address/',
'unconfirmed_btc/',
'bitcoin_withdrawal/',
'ripple_withdrawal/',
'ripple_address/',
],
},
},
'fees': {
'trading': {
'tierBased': true,
'percentage': true,
'taker': 0.25 / 100,
'maker': 0.25 / 100,
'tiers': {
'taker': [
[0, 0.25 / 100],
[20000, 0.24 / 100],
[100000, 0.22 / 100],
[400000, 0.20 / 100],
[600000, 0.15 / 100],
[1000000, 0.14 / 100],
[2000000, 0.13 / 100],
[4000000, 0.12 / 100],
[20000000, 0.11 / 100],
[20000001, 0.10 / 100],
],
'maker': [
[0, 0.25 / 100],
[20000, 0.24 / 100],
[100000, 0.22 / 100],
[400000, 0.20 / 100],
[600000, 0.15 / 100],
[1000000, 0.14 / 100],
[2000000, 0.13 / 100],
[4000000, 0.12 / 100],
[20000000, 0.11 / 100],
[20000001, 0.10 / 100],
],
},
},
'funding': {
'tierBased': false,
'percentage': false,
'withdraw': {
'BTC': 0,
'BCH': 0,
'LTC': 0,
'ETH': 0,
'XRP': 0,
'USD': 25,
'EUR': 0.90,
},
'deposit': {
'BTC': 0,
'BCH': 0,
'LTC': 0,
'ETH': 0,
'XRP': 0,
'USD': 25,
'EUR': 0,
},
},
},
});
}
async fetchMarkets () {
let markets = await this.publicGetTradingPairsInfo ();
let result = [];
for (let i = 0; i < markets.length; i++) {
let market = markets[i];
let symbol = market['name'];
let [ base, quote ] = symbol.split ('/');
let baseId = base.toLowerCase ();
let quoteId = quote.toLowerCase ();
let symbolId = baseId + '_' + quoteId;
let id = market['url_symbol'];
let precision = {
'amount': market['base_decimals'],
'price': market['counter_decimals'],
};
let [ cost, currency ] = market['minimum_order'].split (' ');
let active = (market['trading'] == 'Enabled');
let lot = Math.pow (10, -precision['amount']);
result.push ({
'id': id,
'symbol': symbol,
'base': base,
'quote': quote,
'baseId': baseId,
'quoteId': quoteId,
'symbolId': symbolId,
'info': market,
'lot': lot,
'active': active,
'precision': precision,
'limits': {
'amount': {
'min': lot,
'max': undefined,
},
'price': {
'min': Math.pow (10, -precision['price']),
'max': undefined,
},
'cost': {
'min': parseFloat (cost),
'max': undefined,
},
},
});
}
return result;
}
async fetchOrderBook (symbol, params = {}) {
await this.loadMarkets ();
let orderbook = await this.publicGetOrderBookPair (this.extend ({
'pair': this.marketId (symbol),
}, params));
let timestamp = parseInt (orderbook['timestamp']) * 1000;
return this.parseOrderBook (orderbook, timestamp);
}
async fetchTicker (symbol, params = {}) {
await this.loadMarkets ();
let ticker = await this.publicGetTickerPair (this.extend ({
'pair': this.marketId (symbol),
}, params));
let timestamp = parseInt (ticker['timestamp']) * 1000;
let vwap = parseFloat (ticker['vwap']);
let baseVolume = parseFloat (ticker['volume']);
let quoteVolume = baseVolume * vwap;
return {
'symbol': symbol,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'high': parseFloat (ticker['high']),
'low': parseFloat (ticker['low']),
'bid': parseFloat (ticker['bid']),
'ask': parseFloat (ticker['ask']),
'vwap': vwap,
'open': parseFloat (ticker['open']),
'close': undefined,
'first': undefined,
'last': parseFloat (ticker['last']),
'change': undefined,
'percentage': undefined,
'average': undefined,
'baseVolume': baseVolume,
'quoteVolume': quoteVolume,
'info': ticker,
};
}
parseTrade (trade, market = undefined) {
let timestamp = undefined;
if ('date' in trade) {
timestamp = parseInt (trade['date']) * 1000;
} else if ('datetime' in trade) {
timestamp = this.parse8601 (trade['datetime']);
}
let side = (trade['type'] == '0') ? 'buy' : 'sell';
let order = undefined;
if ('order_id' in trade)
order = trade['order_id'].toString ();
if ('currency_pair' in trade) {
let marketId = trade['currency_pair'];
if (marketId in this.markets_by_id)
market = this.markets_by_id[marketId];
}
let price = this.safeFloat (trade, 'price');
price = this.safeFloat (trade, market['symbolId'], price);
let amount = this.safeFloat (trade, 'amount');
amount = this.safeFloat (trade, market['baseId'], amount);
let id = this.safeValue (trade, 'tid');
id = this.safeValue (trade, 'id', id);
if (id)
id = id.toString ();
return {
'id': id,
'info': trade,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'symbol': market['symbol'],
'order': order,
'type': undefined,
'side': side,
'price': parseFloat (price),
'amount': parseFloat (amount),
};
}
async fetchTrades (symbol, since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let response = await this.publicGetTransactionsPair (this.extend ({
'pair': market['id'],
'time': 'minute',
}, params));
return this.parseTrades (response, market, since, limit);
}
async fetchBalance (params = {}) {
await this.loadMarkets ();
let balance = await this.privatePostBalance ();
let result = { 'info': balance };
let currencies = Object.keys (this.currencies);
for (let i = 0; i < currencies.length; i++) {
let currency = currencies[i];
let lowercase = currency.toLowerCase ();
let total = lowercase + '_balance';
let free = lowercase + '_available';
let used = lowercase + '_reserved';
let account = this.account ();
if (free in balance)
account['free'] = parseFloat (balance[free]);
if (used in balance)
account['used'] = parseFloat (balance[used]);
if (total in balance)
account['total'] = parseFloat (balance[total]);
result[currency] = account;
}
return this.parseBalance (result);
}
async createOrder (symbol, type, side, amount, price = undefined, params = {}) {
await this.loadMarkets ();
let method = 'privatePost' + this.capitalize (side);
let order = {
'pair': this.marketId (symbol),
'amount': amount,
};
if (type == 'market')
method += 'Market';
else
order['price'] = price;
method += 'Pair';
let response = await this[method] (this.extend (order, params));
return {
'info': response,
'id': response['id'],
};
}
async cancelOrder (id, symbol = undefined, params = {}) {
await this.loadMarkets ();
return await this.privatePostCancelOrder ({ 'id': id });
}
parseOrderStatus (order) {
if ((order['status'] == 'Queue') || (order['status'] == 'Open'))
return 'open';
if (order['status'] == 'Finished')
return 'closed';
return order['status'];
}
async fetchOrderStatus (id, symbol = undefined) {
await this.loadMarkets ();
let response = await this.privatePostOrderStatus ({ 'id': id });
return this.parseOrderStatus (response);
}
async fetchMyTrades (symbol = undefined, since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
let market = undefined;
if (symbol)
market = this.market (symbol);
let pair = market ? market['id'] : 'all';
let request = this.extend ({ 'pair': pair }, params);
let response = await this.privatePostUserTransactionsPair (request);
return this.parseTrades (response, market, since, limit);
}
async fetchOrder (id, symbol = undefined, params = {}) {
await this.loadMarkets ();
return await this.privatePostOrderStatus ({ 'id': id });
}
getCurrencyName (code) {
if (code == 'BTC')
return 'bitcoin';
if (code == 'XRP')
return 'ripple';
return code.toLowerCase ();
}
isFiat (code) {
if (code == 'USD')
return true;
if (code == 'EUR')
return true;
return false;
}
async withdraw (code, amount, address, params = {}) {
let isFiat = this.isFiat (code);
if (isFiat)
throw new ExchangeError (this.id + ' fiat withdraw() for ' + code + ' is not implemented yet');
let name = this.getCurrencyName (code);
let request = {
'amount': amount,
'address': address,
};
let v1 = (code == 'BTC') || (code == 'XRP');
let method = v1 ? 'v1' : 'private'; // v1 or v2
method += 'Post' + this.capitalize (name) + 'Withdrawal';
let query = params;
if (code == 'XRP') {
let tag = this.safeString (params, 'destination_tag');
if (tag) {
request['destination_tag'] = tag;
query = this.omit (params, 'destination_tag');
} else {
throw new ExchangeError (this.id + ' withdraw() requires a destination_tag param for ' + code);
}
}
let response = await this[method] (this.extend (request, query));
return {
'info': response,
'id': response['id'],
};
}
sign (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
let url = this.urls['api'] + '/';
if (api != 'v1')
url += this.version + '/';
url += this.implodeParams (path, params);
let query = this.omit (params, this.extractParams (path));
if (api == 'public') {
if (Object.keys (query).length)
url += '?' + this.urlencode (query);
} else {
this.checkRequiredCredentials ();
let nonce = this.nonce ().toString ();
let auth = nonce + this.uid + this.apiKey;
let signature = this.encode (this.hmac (this.encode (auth), this.encode (this.secret)));
query = this.extend ({
'key': this.apiKey,
'signature': signature.toUpperCase (),
'nonce': nonce,
}, query);
body = this.urlencode (query);
headers = {
'Content-Type': 'application/x-www-form-urlencoded',
};
}
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 ('status' in response)
if (response['status'] == 'error')
throw new ExchangeError (this.id + ' ' + this.json (response));
return response;
}
}