ccxt-js
Version:
The node.js portion of original ccxt cryptocurrency trading library with support for 100+ exchanges. It reduces the size of the library from 40MB to 8MB
413 lines (391 loc) • 14.8 kB
JavaScript
'use strict';
// ---------------------------------------------------------------------------
const Exchange = require ('./base/Exchange');
const { ExchangeError } = require ('./base/errors');
// ---------------------------------------------------------------------------
module.exports = class crypton extends Exchange {
describe () {
return this.deepExtend (super.describe (), {
'id': 'crypton',
'name': 'Crypton',
'countries': [ 'EU' ],
'rateLimit': 500,
'version': '1',
'has': {
'fetchDepositAddress': true,
'fetchMyTrades': true,
'fetchOpenOrders': true,
'fetchOrder': true,
'fetchTicker': false,
'fetchTickers': true,
},
'urls': {
'logo': 'https://user-images.githubusercontent.com/1294454/41334251-905b5a78-6eed-11e8-91b9-f3aa435078a1.jpg',
'api': 'https://api.cryptonbtc.com',
'www': 'https://cryptonbtc.com',
'doc': 'https://cryptonbtc.docs.apiary.io/',
'fees': 'https://help.cryptonbtc.com/hc/en-us/articles/360004089872-Fees',
},
'api': {
'public': {
'get': [
'currencies',
'markets',
'markets/{id}',
'markets/{id}/orderbook',
'markets/{id}/trades',
'tickers',
],
},
'private': {
'get': [
'balances',
'orders',
'orders/{id}',
'fills',
'deposit_address/{currency}',
'deposits',
],
'post': [
'orders',
],
'delete': [
'orders/{id}',
],
},
},
'fees': {
'trading': {
'tierBased': false,
'percentage': true,
'maker': 0.0020,
'taker': 0.0020,
},
},
});
}
async fetchMarkets () {
let response = await this.publicGetMarkets ();
let markets = response['result'];
let result = [];
let keys = Object.keys (markets);
for (let i = 0; i < keys.length; i++) {
let id = keys[i];
let market = markets[id];
let baseId = market['base'];
let quoteId = market['quote'];
let base = this.commonCurrencyCode (baseId);
let quote = this.commonCurrencyCode (quoteId);
let symbol = base + '/' + quote;
let precision = {
'amount': 8,
'price': this.precisionFromString (this.safeString (market, 'priceStep')),
};
let active = market['enabled'];
result.push ({
'id': id,
'symbol': symbol,
'base': base,
'quote': quote,
'baseId': baseId,
'quoteId': quoteId,
'active': active,
'info': market,
'precision': precision,
'limits': {
'amount': {
'min': this.safeFloat (market, 'minSize'),
'max': undefined,
},
'price': {
'min': this.safeFloat (market, 'priceStep'),
'max': undefined,
},
'cost': {
'min': undefined,
'max': undefined,
},
},
});
}
return result;
}
async fetchBalance (params = {}) {
await this.loadMarkets ();
let balances = await this.privateGetBalances (params);
let result = { 'info': balances };
let keys = Object.keys (balances);
for (let i = 0; i < keys.length; i++) {
let id = keys[i];
let currency = this.commonCurrencyCode (id);
let account = this.account ();
let balance = balances[id];
let total = parseFloat (balance['total']);
let free = parseFloat (balance['free']);
let used = parseFloat (balance['locked']);
account['total'] = total;
account['free'] = free;
account['used'] = used;
result[currency] = account;
}
return this.parseBalance (result);
}
async fetchOrderBook (symbol, limit = undefined, params = {}) {
await this.loadMarkets ();
let orderbook = await this.publicGetMarketsIdOrderbook (this.extend ({
'id': this.marketId (symbol),
}, params));
return this.parseOrderBook (orderbook);
}
parseTicker (ticker, market = undefined) {
let symbol = undefined;
if (market)
symbol = market['symbol'];
let last = this.safeFloat (ticker, 'last');
let relativeChange = this.safeFloat (ticker, 'change24h', 0.0);
return {
'symbol': symbol,
'timestamp': undefined,
'datetime': undefined,
'high': undefined,
'low': undefined,
'bid': this.safeFloat (ticker, 'bid'),
'bidVolume': undefined,
'ask': this.safeFloat (ticker, 'ask'),
'askVolume': undefined,
'vwap': undefined,
'open': undefined,
'close': last,
'last': last,
'previousClose': undefined,
'change': undefined,
'percentage': relativeChange * 100,
'average': undefined,
'baseVolume': this.safeFloat (ticker, 'volume24h'),
'quoteVolume': undefined,
'info': ticker,
};
}
async fetchTickers (symbols = undefined, params = {}) {
await this.loadMarkets ();
let tickers = await this.publicGetTickers (params);
let keys = Object.keys (tickers);
let result = {};
for (let i = 0; i < keys.length; i++) {
let id = keys[i];
let ticker = tickers[id];
let market = undefined;
let symbol = id;
if (id in this.markets_by_id) {
market = this.markets_by_id[id];
symbol = market['symbol'];
} else {
symbol = this.parseSymbol (id);
}
result[symbol] = this.parseTicker (ticker, market);
}
return result;
}
parseTrade (trade, market = undefined) {
let timestamp = this.parse8601 (trade['time']);
let symbol = undefined;
if ('market' in trade) {
let marketId = trade['market'];
if (marketId in this.markets_by_id) {
market = this.markets_by_id[marketId];
} else {
symbol = this.parseSymbol (marketId);
}
}
if (typeof market !== 'undefined') {
symbol = market['symbol'];
}
let fee = undefined;
if ('fee' in trade) {
fee = {
'cost': this.safeFloat (trade, 'fee'),
'currency': this.commonCurrencyCode (trade['feeCurrency']),
};
}
return {
'id': trade['id'].toString (),
'info': trade,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'symbol': symbol,
'type': undefined,
'side': trade['side'],
'price': this.safeFloat (trade, 'price'),
'amount': this.safeFloat (trade, 'size'),
'order': this.safeString (trade, 'orderId'),
'fee': fee,
};
}
async fetchTrades (symbol, since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let request = {
'id': market['id'],
};
if (typeof limit !== 'undefined')
request['limit'] = limit;
let response = await this.publicGetMarketsIdTrades (this.extend (request, params));
return this.parseTrades (response['result'], market, since, limit);
}
async fetchMyTrades (symbol = undefined, since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let request = {};
if (typeof limit !== 'undefined')
request['limit'] = limit;
let response = await this.privateGetFills (this.extend (request, params));
let trades = this.parseTrades (response['result'], market, since, limit);
return this.filterBySymbol (trades, symbol);
}
parseOrder (order, market = undefined) {
let id = order['id'].toString ();
let status = order['status'];
let side = order['side'];
let type = order['type'];
let symbol = undefined;
let marketId = order['market'];
if (marketId in this.markets_by_id) {
market = this.markets_by_id[marketId];
symbol = market['symbol'];
} else {
symbol = this.parseSymbol (marketId);
}
let timestamp = this.parse8601 (order['createdAt']);
let iso8601 = this.iso8601 (timestamp);
let fee = undefined;
if ('fee' in order) {
fee = {
'cost': parseFloat (order['fee']),
'currency': this.commonCurrencyCode (order['feeCurrency']),
};
}
let price = this.safeFloat (order, 'price');
let amount = this.safeFloat (order, 'size');
let filled = this.safeFloat (order, 'filledSize');
let remaining = amount - filled;
let cost = filled * price;
let result = {
'info': order,
'id': id,
'timestamp': timestamp,
'datetime': iso8601,
'lastTradeTimestamp': undefined,
'symbol': symbol,
'type': type,
'side': side,
'price': price,
'cost': cost,
'average': undefined,
'amount': amount,
'filled': filled,
'remaining': remaining,
'status': status,
'fee': fee,
};
return result;
}
async fetchOrder (id, symbol = undefined, params = {}) {
await this.loadMarkets ();
let request = {
'id': id,
};
let response = await this.privateGetOrdersId (this.extend (request, params));
return this.parseOrder (response['result']);
}
async fetchOpenOrders (symbol = undefined, since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
let request = {};
let market = undefined;
if (typeof symbol !== 'undefined') {
request['market'] = this.marketId (symbol);
}
let response = await this.privateGetOrders (this.extend (request, params));
return this.parseOrders (response['result'], market, since, limit);
}
async createOrder (symbol, type, side, amount, price = undefined, params = {}) {
await this.loadMarkets ();
let order = {
'market': this.marketId (symbol),
'side': side,
'type': type,
'size': this.amountToPrecision (symbol, amount),
'price': this.priceToPrecision (symbol, price),
};
let response = await this.privatePostOrders (this.extend (order, params));
return this.parseOrder (response['result']);
}
async cancelOrder (id, symbol = undefined, params = {}) {
await this.loadMarkets ();
let request = {
'id': id,
};
let response = await this.privateDeleteOrdersId (this.extend (request, params));
return this.parseOrder (response['result']);
}
parseSymbol (id) {
let [ base, quote ] = id.split ('-');
base = this.commonCurrencyCode (base);
quote = this.commonCurrencyCode (quote);
return base + '/' + quote;
}
async fetchDepositAddress (code, params = {}) {
await this.loadMarkets ();
let currency = this.currency (code);
let response = await this.privateGetDepositAddressCurrency (this.extend ({
'currency': currency['id'],
}, params));
let result = response['result'];
let address = this.safeString (result, 'address');
let tag = this.safeString (result, 'tag');
this.checkAddress (address);
return {
'currency': code,
'address': address,
'tag': tag,
'info': response,
};
}
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 (method === 'GET') {
if (Object.keys (query).length)
request += '?' + this.urlencode (query);
}
let url = this.urls['api'] + request;
if (api === 'private') {
this.checkRequiredCredentials ();
let timestamp = this.milliseconds ().toString ();
let payload = '';
if (method !== 'GET') {
if (Object.keys (query).length) {
body = this.json (query);
payload = body;
}
}
let what = timestamp + method + request + payload;
let signature = this.hmac (this.encode (what), this.encode (this.secret), 'sha256');
headers = {
'CRYPTON-APIKEY': this.apiKey,
'CRYPTON-SIGNATURE': signature,
'CRYPTON-TIMESTAMP': timestamp,
'Content-Type': 'application/json',
};
}
return { 'url': url, 'method': method, 'body': body, 'headers': headers };
}
handleErrors (code, reason, url, method, headers, body) {
if (body[0] === '{') {
let response = JSON.parse (body);
let success = this.safeValue (response, 'success');
if (!success) {
throw new ExchangeError (this.id + ' ' + body);
}
}
}
};