@jmparsons/ccxt
Version:
A JavaScript / Python / PHP cryptocurrency trading library with support for 100+ exchanges
462 lines (439 loc) • 17.7 kB
JavaScript
'use strict';
// ---------------------------------------------------------------------------
const Exchange = require ('./base/Exchange');
const { ExchangeError, DDoSProtection, AuthenticationError, InvalidOrder } = require ('./base/errors');
// ---------------------------------------------------------------------------
module.exports = class lbank extends Exchange {
describe () {
return this.deepExtend (super.describe (), {
'id': 'lbank',
'name': 'LBank',
'countries': 'CN',
'version': 'v1',
'has': {
'fetchTickers': true,
'fetchOHLCV': true,
'fetchOrder': true,
'fetchOrders': true,
'fetchOpenOrders': true,
'fetchClosedOrders': true,
},
'timeframes': {
'1m': 'minute1',
'5m': 'minute5',
'15m': 'minute15',
'30m': 'minute30',
'1h': 'hour1',
'2h': 'hour2',
'4h': 'hour4',
'6h': 'hour6',
'8h': 'hour8',
'12h': 'hour12',
'1d': 'day1',
'1w': 'week1',
},
'urls': {
'logo': 'https://user-images.githubusercontent.com/1294454/38063602-9605e28a-3302-11e8-81be-64b1e53c4cfb.jpg',
'api': 'https://api.lbank.info',
'www': 'https://www.lbank.info',
'doc': 'https://www.lbank.info/api/api-overview',
'fees': 'https://lbankinfo.zendesk.com/hc/zh-cn/articles/115002295114--%E8%B4%B9%E7%8E%87%E8%AF%B4%E6%98%8E',
},
'api': {
'public': {
'get': [
'currencyPairs',
'ticker',
'depth',
'trades',
'kline',
],
},
'private': {
'post': [
'user_info',
'create_order',
'cancel_order',
'orders_info',
'orders_info_history',
],
},
},
'fees': {
'trading': {
'maker': 0.1 / 100,
'taker': 0.1 / 100,
},
'funding': {
'withdraw': {
'BTC': undefined,
'ZEC': 0.01,
'ETH': 0.01,
'ETC': 0.01,
// 'QTUM': amount => Math.max (0.01, amount * (0.1 / 100)),
'VEN': 10.0,
'BCH': 0.0002,
'SC': 50.0,
'BTM': 20.0,
'NAS': 1.0,
'EOS': 1.0,
'XWC': 5.0,
'BTS': 1.0,
'INK': 10.0,
'BOT': 3.0,
'YOYOW': 15.0,
'TGC': 10.0,
'NEO': 0.0,
'CMT': 20.0,
'SEER': 2000.0,
'FIL': undefined,
'BTG': undefined,
},
},
},
});
}
async fetchMarkets () {
let markets = await this.publicGetCurrencyPairs ();
let result = [];
for (let i = 0; i < markets.length; i++) {
let id = markets[i];
let [ baseId, quoteId ] = id.split ('_');
let base = this.commonCurrencyCode (baseId.toUpperCase ());
let quote = this.commonCurrencyCode (quoteId.toUpperCase ());
let symbol = [base, quote].join ('/');
let precision = {
'amount': 8,
'price': 8,
};
let lot = Math.pow (10, -precision['amount']);
result.push ({
'id': id,
'symbol': symbol,
'base': base,
'quote': quote,
'baseId': baseId,
'quoteId': quoteId,
'active': true,
'lot': lot,
'precision': precision,
'limits': {
'amount': {
'min': lot,
'max': undefined,
},
'price': {
'min': Math.pow (10, -precision['price']),
'max': Math.pow (10, precision['price']),
},
'cost': {
'min': undefined,
'max': undefined,
},
},
'info': id,
});
}
return result;
}
parseTicker (ticker, market = undefined) {
let symbol = market['symbol'];
let timestamp = this.safeInteger (ticker, 'timestamp');
let info = ticker;
ticker = info['ticker'];
let last = this.safeFloat (ticker, 'latest');
return {
'symbol': symbol,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'high': this.safeFloat (ticker, 'high'),
'low': this.safeFloat (ticker, 'low'),
'bid': undefined,
'bidVolume': undefined,
'ask': undefined,
'askVolume': undefined,
'vwap': undefined,
'open': undefined,
'close': last,
'last': last,
'previousClose': undefined,
'change': this.safeFloat (ticker, 'change'),
'percentage': undefined,
'average': undefined,
'baseVolume': this.safeFloat (ticker, 'vol'),
'quoteVolume': this.safeFloat (ticker, 'turnover'),
'info': info,
};
}
async fetchTicker (symbol, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let response = await this.publicGetTicker (this.extend ({
'symbol': market['id'],
}, params));
return this.parseTicker (response, market);
}
async fetchTickers (symbols = undefined, params = {}) {
await this.loadMarkets ();
let tickers = await this.publicGetTicker (this.extend ({
'symbol': 'all',
}, params));
let result = {};
for (let i = 0; i < tickers.length; i++) {
let ticker = tickers[i];
let id = ticker['symbol'];
let market = this.marketsById[id];
let symbol = market['symbol'];
result[symbol] = this.parseTicker (ticker, market);
}
return result;
}
async fetchOrderBook (symbol, limit = 60, params = {}) {
await this.loadMarkets ();
let response = await this.publicGetDepth (this.extend ({
'symbol': this.marketId (symbol),
'size': Math.min (limit, 60),
}, params));
return this.parseOrderBook (response);
}
parseTrade (trade, market = undefined) {
let symbol = market['symbol'];
let timestamp = parseInt (trade['date_ms']);
let price = this.safeFloat (trade, 'price');
let amount = this.safeFloat (trade, 'amount');
let cost = this.costToPrecision (symbol, price * amount);
return {
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'symbol': symbol,
'id': this.safeString (trade, 'tid'),
'order': undefined,
'type': undefined,
'side': trade['type'],
'price': price,
'amount': amount,
'cost': parseFloat (cost),
'fee': undefined,
'info': this.safeValue (trade, 'info', trade),
};
}
async fetchTrades (symbol, since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let request = {
'symbol': market['id'],
'size': 100,
};
if (since)
request['time'] = parseInt (since / 1000);
if (limit)
request['size'] = limit;
let response = await this.publicGetTrades (this.extend (request, params));
return this.parseTrades (response, market, since, limit);
}
async fetchOHLCV (symbol, timeframe = '5m', since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let request = {
'symbol': market['id'],
'type': this.timeframes[timeframe],
'size': 1000,
};
if (since)
request['time'] = parseInt (since / 1000);
if (limit)
request['size'] = limit;
let response = await this.publicGetKline (this.extend (request, params));
return this.parseOHLCVs (response, market, timeframe, since, limit);
}
async fetchBalance (params = {}) {
await this.loadMarkets ();
let response = await this.privatePostUserInfo (params);
let result = { 'info': response };
let ids = Object.keys (this.extend (response['info']['free'], response['info']['freeze']));
for (let i = 0; i < ids.length; i++) {
let id = ids[i];
let code = id;
if (id in this.currencies_by_id)
code = this.currencies_by_id[id]['code'];
let free = this.safeFloat (response['info']['free'], id, 0.0);
let used = this.safeFloat (response['info']['freeze'], id, 0.0);
let account = {
'free': free,
'used': used,
'total': 0.0,
};
account['total'] = this.sum (account['free'], account['used']);
result[code] = account;
}
return this.parseBalance (result);
}
parseOrder (order, market = undefined) {
let symbol = this.safeValue (this.marketsById, order['symbol'], { 'symbol': undefined });
let timestamp = this.safeInteger (order, 'create_time');
// Limit Order Request Returns: Order Price
// Market Order Returns: cny amount of market order
let price = this.safeFloat (order, 'price');
let amount = this.safeFloat (order, 'amount');
let filled = this.safeFloat (order, 'deal_amount');
let cost = filled * this.safeFloat (order, 'avg_price');
let status = this.safeInteger (order, 'status');
if (status === -1 || status === 4) {
status = 'canceled';
} else if (status === 2) {
status = 'closed';
} else {
status = 'open';
}
return {
'id': this.safeString (order, 'order_id'),
'datetime': this.iso8601 (timestamp),
'timestamp': timestamp,
'lastTradeTimestamp': undefined,
'status': status,
'symbol': symbol,
'type': this.safeString (order, 'order_type'),
'side': order['type'],
'price': price,
'cost': cost,
'amount': amount,
'filled': undefined,
'remaining': undefined,
'trades': undefined,
'fee': undefined,
'info': this.safeValue (order, 'info', order),
};
}
async createOrder (symbol, type, side, amount, price = undefined, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let order = {
'symbol': market['id'],
'type': side,
'amount': amount,
};
if (type === 'market') {
order['type'] += '_market';
} else {
order['price'] = price;
}
let response = await this.privatePostCreateOrder (this.extend (order, params));
order = this.omit (order, 'type');
order['order_id'] = response['order_id'];
order['type'] = side;
order['order_type'] = type;
order['create_time'] = this.milliseconds ();
order['info'] = response;
order = this.parseOrder (order, market);
let id = order['id'];
this.orders[id] = order;
return order;
}
async cancelOrder (id, symbol = undefined, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let response = await this.privatePostCancelOrder (this.extend ({
'symbol': market['id'],
'order_id': id,
}, params));
return response;
}
async fetchOrder (id, symbol = undefined, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let response = await this.privatePostOrdersInfo (this.extend ({
'symbol': market['id'],
'order_id': id,
}, params));
return this.parseOrder (response['orders'][0], market);
}
async fetchOrders (symbol = undefined, since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
let market = this.market (symbol);
let response = await this.privatePostOrdersInfoHistory (this.extend ({
'symbol': market['id'],
'current_page': 1,
'page_length': 100,
}, params));
return this.parseOrders (response['orders'], undefined, since, limit);
}
async fetchOpenOrders (symbol = undefined, since = undefined, limit = undefined, params = {}) {
let response = await this.fetchOrders (this.extend ({
'status': 0,
}, params));
return response;
}
async fetchClosedOrders (symbol = undefined, since = undefined, limit = undefined, params = {}) {
let response = await this.fetchOrders (this.extend ({
'status': 1,
}, params));
return response;
}
sign (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
let query = this.omit (params, this.extractParams (path));
let url = this.urls['api'] + '/' + this.version + '/' + this.implodeParams (path, params);
// Every endpoint ends with ".do"
url += '.do';
if (api === 'public') {
if (Object.keys (query).length)
url += '?' + this.urlencode (query);
} else {
this.checkRequiredCredentials ();
let query = this.keysort (this.extend ({
'api_key': this.apiKey,
}, params));
let queryString = this.rawencode (query) + '&secret_key=' + this.secret;
query['sign'] = this.hash (this.encode (queryString)).toUpperCase ();
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);
let success = this.safeString (response, 'result');
if (success === 'false') {
let errorCode = this.safeString (response, 'error_code');
let message = this.safeString ({
'10000': 'Internal error',
'10001': 'The required parameters can not be empty',
'10002': 'verification failed',
'10003': 'Illegal parameters',
'10004': 'User requests are too frequent',
'10005': 'Key does not exist',
'10006': 'user does not exist',
'10007': 'Invalid signature',
'10008': 'This currency pair is not supported',
'10009': 'Limit orders can not be missing orders and the number of orders',
'10010': 'Order price or order quantity must be greater than 0',
'10011': 'Market orders can not be missing the amount of the order',
'10012': 'market sell orders can not be missing orders',
'10013': 'is less than the minimum trading position 0.001',
'10014': 'Account number is not enough',
'10015': 'The order type is wrong',
'10016': 'Account balance is not enough',
'10017': 'Abnormal server',
'10018': 'order inquiry can not be more than 50 less than one',
'10019': 'withdrawal orders can not be more than 3 less than one',
'10020': 'less than the minimum amount of the transaction limit of 0.001',
}, errorCode, this.json (response));
let ErrorClass = this.safeValue ({
'10002': AuthenticationError,
'10004': DDoSProtection,
'10005': AuthenticationError,
'10006': AuthenticationError,
'10007': AuthenticationError,
'10009': InvalidOrder,
'10010': InvalidOrder,
'10011': InvalidOrder,
'10012': InvalidOrder,
'10013': InvalidOrder,
'10014': InvalidOrder,
'10015': InvalidOrder,
'10016': InvalidOrder,
}, errorCode, ExchangeError);
throw new ErrorClass (message);
}
return response;
}
};