672 lines
25 KiB
JavaScript
672 lines
25 KiB
JavaScript
'use strict';
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// ---------------------------------------------------------------------------
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const Exchange = require ('./base/Exchange');
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const { ExchangeError, DDoSProtection, AuthenticationError, InvalidOrder, ArgumentsRequired } = require ('./base/errors');
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// ---------------------------------------------------------------------------
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module.exports = class lbank extends Exchange {
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describe () {
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return this.deepExtend (super.describe (), {
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'id': 'lbank',
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'name': 'LBank',
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'countries': [ 'CN' ],
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'version': 'v1',
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'has': {
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'fetchTickers': true,
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'fetchOHLCV': true,
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'fetchOrder': true,
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'fetchOrders': true,
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'fetchOpenOrders': false, // status 0 API doesn't work
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'fetchClosedOrders': true,
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},
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'timeframes': {
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'1m': 'minute1',
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'5m': 'minute5',
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'15m': 'minute15',
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'30m': 'minute30',
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'1h': 'hour1',
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'2h': 'hour2',
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'4h': 'hour4',
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'6h': 'hour6',
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'8h': 'hour8',
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'12h': 'hour12',
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'1d': 'day1',
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'1w': 'week1',
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},
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'urls': {
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'logo': 'https://user-images.githubusercontent.com/1294454/38063602-9605e28a-3302-11e8-81be-64b1e53c4cfb.jpg',
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'api': 'https://api.lbank.info',
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'www': 'https://www.lbank.info',
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'doc': 'https://github.com/LBank-exchange/lbank-official-api-docs',
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'fees': 'https://lbankinfo.zendesk.com/hc/en-gb/articles/360012072873-Trading-Fees',
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'referral': 'https://www.lbex.io/invite?icode=7QCY',
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},
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'api': {
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'public': {
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'get': [
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'currencyPairs',
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'ticker',
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'depth',
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'trades',
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'kline',
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'accuracy',
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],
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},
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'private': {
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'post': [
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'user_info',
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'create_order',
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'cancel_order',
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'orders_info',
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'orders_info_history',
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'withdraw',
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'withdrawCancel',
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'withdraws',
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'withdrawConfigs',
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],
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},
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},
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'fees': {
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'trading': {
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'maker': 0.1 / 100,
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'taker': 0.1 / 100,
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},
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'funding': {
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'withdraw': {
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'BTC': undefined,
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'ZEC': 0.01,
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'ETH': 0.01,
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'ETC': 0.01,
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// 'QTUM': amount => Math.max (0.01, amount * (0.1 / 100)),
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'VEN': 10.0,
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'BCH': 0.0002,
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'SC': 50.0,
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'BTM': 20.0,
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'NAS': 1.0,
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'EOS': 1.0,
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'XWC': 5.0,
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'BTS': 1.0,
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'INK': 10.0,
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'BOT': 3.0,
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'YOYOW': 15.0,
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'TGC': 10.0,
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'NEO': 0.0,
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'CMT': 20.0,
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'SEER': 2000.0,
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'FIL': undefined,
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'BTG': undefined,
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},
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},
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},
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'commonCurrencies': {
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'VET_ERC20': 'VEN',
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},
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'options': {
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'cacheSecretAsPem': true,
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},
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});
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}
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async fetchMarkets (params = {}) {
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const response = await this.publicGetAccuracy (params);
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const result = [];
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for (let i = 0; i < response.length; i++) {
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const market = response[i];
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const id = market['symbol'];
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const parts = id.split ('_');
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let baseId = undefined;
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let quoteId = undefined;
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const numParts = parts.length;
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// lbank will return symbols like "vet_erc20_usdt"
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if (numParts > 2) {
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baseId = parts[0] + '_' + parts[1];
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quoteId = parts[2];
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} else {
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baseId = parts[0];
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quoteId = parts[1];
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}
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const base = this.safeCurrencyCode (baseId);
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const quote = this.safeCurrencyCode (quoteId);
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const symbol = base + '/' + quote;
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const precision = {
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'amount': this.safeInteger (market, 'quantityAccuracy'),
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'price': this.safeInteger (market, 'priceAccuracy'),
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};
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result.push ({
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'id': id,
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'symbol': symbol,
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'base': base,
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'quote': quote,
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'baseId': baseId,
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'quoteId': quoteId,
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'active': true,
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'precision': precision,
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'limits': {
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'amount': {
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'min': Math.pow (10, -precision['amount']),
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'max': undefined,
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},
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'price': {
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'min': Math.pow (10, -precision['price']),
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'max': Math.pow (10, precision['price']),
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},
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'cost': {
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'min': undefined,
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'max': undefined,
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},
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},
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'info': id,
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});
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}
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return result;
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}
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parseTicker (ticker, market = undefined) {
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let symbol = undefined;
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if (market === undefined) {
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const marketId = this.safeString (ticker, 'symbol');
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if (marketId in this.markets_by_id) {
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const market = this.marketsById[marketId];
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symbol = market['symbol'];
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} else {
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const parts = marketId.split ('_');
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let baseId = undefined;
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let quoteId = undefined;
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const numParts = parts.length;
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// lbank will return symbols like "vet_erc20_usdt"
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if (numParts > 2) {
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baseId = parts[0] + '_' + parts[1];
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quoteId = parts[2];
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} else {
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baseId = parts[0];
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quoteId = parts[1];
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}
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const base = this.safeCurrencyCode (baseId);
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const quote = this.safeCurrencyCode (quoteId);
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symbol = base + '/' + quote;
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}
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}
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const timestamp = this.safeInteger (ticker, 'timestamp');
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const info = ticker;
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ticker = info['ticker'];
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const last = this.safeFloat (ticker, 'latest');
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const percentage = this.safeFloat (ticker, 'change');
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let open = undefined;
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if (percentage !== undefined) {
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const relativeChange = this.sum (1, percentage / 100);
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if (relativeChange > 0) {
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open = last / this.sum (1, relativeChange);
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}
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}
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let change = undefined;
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let average = undefined;
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if (last !== undefined && open !== undefined) {
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change = last - open;
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average = this.sum (last, open) / 2;
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}
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if (market !== undefined) {
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symbol = market['symbol'];
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}
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return {
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'symbol': symbol,
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'timestamp': timestamp,
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'datetime': this.iso8601 (timestamp),
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'high': this.safeFloat (ticker, 'high'),
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'low': this.safeFloat (ticker, 'low'),
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'bid': undefined,
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'bidVolume': undefined,
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'ask': undefined,
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'askVolume': undefined,
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'vwap': undefined,
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'open': undefined,
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'close': last,
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'last': last,
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'previousClose': undefined,
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'change': change,
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'percentage': percentage,
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'average': average,
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'baseVolume': this.safeFloat (ticker, 'vol'),
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'quoteVolume': this.safeFloat (ticker, 'turnover'),
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'info': info,
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};
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}
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async fetchTicker (symbol, params = {}) {
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await this.loadMarkets ();
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const market = this.market (symbol);
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const request = {
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'symbol': market['id'],
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};
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const response = await this.publicGetTicker (this.extend (request, params));
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return this.parseTicker (response, market);
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}
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async fetchTickers (symbols = undefined, params = {}) {
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await this.loadMarkets ();
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const request = {
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'symbol': 'all',
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};
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const response = await this.publicGetTicker (this.extend (request, params));
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const result = {};
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for (let i = 0; i < response.length; i++) {
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const ticker = this.parseTicker (response[i]);
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const symbol = ticker['symbol'];
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result[symbol] = ticker;
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}
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return result;
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}
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async fetchOrderBook (symbol, limit = 60, params = {}) {
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await this.loadMarkets ();
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let size = 60;
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if (limit !== undefined) {
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size = Math.min (limit, size);
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}
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const request = {
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'symbol': this.marketId (symbol),
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'size': size,
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};
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const response = await this.publicGetDepth (this.extend (request, params));
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return this.parseOrderBook (response);
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}
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parseTrade (trade, market = undefined) {
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let symbol = undefined;
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if (market !== undefined) {
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symbol = market['symbol'];
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}
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const timestamp = this.safeInteger (trade, 'date_ms');
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const price = this.safeFloat (trade, 'price');
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const amount = this.safeFloat (trade, 'amount');
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let cost = undefined;
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if (price !== undefined) {
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if (amount !== undefined) {
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cost = parseFloat (this.costToPrecision (symbol, price * amount));
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}
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}
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const id = this.safeString (trade, 'tid');
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const type = undefined;
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const side = this.safeString (trade, 'type');
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return {
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'id': id,
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'info': this.safeValue (trade, 'info', trade),
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'timestamp': timestamp,
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'datetime': this.iso8601 (timestamp),
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'symbol': symbol,
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'order': undefined,
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'type': type,
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'side': side,
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'takerOrMaker': undefined,
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'price': price,
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'amount': amount,
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'cost': cost,
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'fee': undefined,
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};
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}
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async fetchTrades (symbol, since = undefined, limit = undefined, params = {}) {
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await this.loadMarkets ();
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const market = this.market (symbol);
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const request = {
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'symbol': market['id'],
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'size': 100,
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};
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if (since !== undefined) {
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request['time'] = parseInt (since);
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}
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if (limit !== undefined) {
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request['size'] = limit;
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}
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const response = await this.publicGetTrades (this.extend (request, params));
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return this.parseTrades (response, market, since, limit);
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}
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parseOHLCV (ohlcv, market = undefined, timeframe = '1m', since = undefined, limit = undefined) {
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return [
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ohlcv[0] * 1000,
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ohlcv[1],
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ohlcv[2],
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ohlcv[3],
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ohlcv[4],
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ohlcv[5],
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];
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}
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async fetchOHLCV (symbol, timeframe = '5m', since = undefined, limit = 1000, params = {}) {
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await this.loadMarkets ();
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const market = this.market (symbol);
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if (since === undefined) {
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throw new ArgumentsRequired (this.id + ' fetchOHLCV requires a `since` argument');
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}
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if (limit === undefined) {
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throw new ArgumentsRequired (this.id + ' fetchOHLCV requires a `limit` argument');
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}
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const request = {
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'symbol': market['id'],
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'type': this.timeframes[timeframe],
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'size': limit,
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'time': parseInt (since / 1000),
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};
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const response = await this.publicGetKline (this.extend (request, params));
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return this.parseOHLCVs (response, market, timeframe, since, limit);
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}
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async fetchBalance (params = {}) {
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await this.loadMarkets ();
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const response = await this.privatePostUserInfo (params);
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//
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// {
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// "result":"true",
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// "info":{
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// "freeze":{
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// "iog":"0.00000000",
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// "ssc":"0.00000000",
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// "eon":"0.00000000",
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// },
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// "asset":{
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// "iog":"0.00000000",
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// "ssc":"0.00000000",
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// "eon":"0.00000000",
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// },
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// "free":{
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// "iog":"0.00000000",
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// "ssc":"0.00000000",
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// "eon":"0.00000000",
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// },
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// }
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// }
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//
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const result = { 'info': response };
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const info = this.safeValue (response, 'info', {});
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const free = this.safeValue (info, 'free', {});
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const freeze = this.safeValue (info, 'freeze', {});
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const asset = this.safeValue (info, 'asset', {});
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const currencyIds = Object.keys (free);
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for (let i = 0; i < currencyIds.length; i++) {
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const currencyId = currencyIds[i];
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const code = this.safeCurrencyCode (currencyId);
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const account = this.account ();
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account['free'] = this.safeFloat (free, currencyId);
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account['used'] = this.safeFloat (freeze, currencyId);
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account['total'] = this.safeFloat (asset, currencyId);
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result[code] = account;
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}
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return this.parseBalance (result);
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}
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parseOrderStatus (status) {
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const statuses = {
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'-1': 'cancelled', // cancelled
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'0': 'open', // not traded
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'1': 'open', // partial deal
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'2': 'closed', // complete deal
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'4': 'closed', // disposal processing
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};
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return this.safeString (statuses, status);
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}
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parseOrder (order, market = undefined) {
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//
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// {
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// "symbol"："eth_btc",
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// "amount"：10.000000,
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// "create_time"：1484289832081,
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// "price"：5000.000000,
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// "avg_price"：5277.301200,
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// "type"："sell",
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// "order_id"："ab704110-af0d-48fd-a083-c218f19a4a55",
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// "deal_amount"：10.000000,
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// "status"：2
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// }
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//
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let symbol = undefined;
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const responseMarket = this.safeValue (this.marketsById, order['symbol']);
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if (responseMarket !== undefined) {
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symbol = responseMarket['symbol'];
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} else if (market !== undefined) {
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symbol = market['symbol'];
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}
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const timestamp = this.safeInteger (order, 'create_time');
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// Limit Order Request Returns: Order Price
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// Market Order Returns: cny amount of market order
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const price = this.safeFloat (order, 'price');
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const amount = this.safeFloat (order, 'amount', 0.0);
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const filled = this.safeFloat (order, 'deal_amount', 0.0);
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const av_price = this.safeFloat (order, 'avg_price');
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let cost = undefined;
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if (av_price !== undefined) {
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cost = filled * av_price;
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}
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const status = this.parseOrderStatus (this.safeString (order, 'status'));
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const id = this.safeString (order, 'order_id');
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const type = this.safeString (order, 'order_type');
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const side = this.safeString (order, 'type');
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let remaining = undefined;
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if (amount !== undefined) {
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if (filled !== undefined) {
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remaining = amount - filled;
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}
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}
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return {
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'id': id,
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'clientOrderId': undefined,
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'datetime': this.iso8601 (timestamp),
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'timestamp': timestamp,
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'lastTradeTimestamp': undefined,
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'status': status,
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'symbol': symbol,
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'type': type,
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'side': side,
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'price': price,
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'cost': cost,
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'amount': amount,
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'filled': filled,
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'remaining': remaining,
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'trades': undefined,
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'fee': undefined,
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'info': this.safeValue (order, 'info', order),
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'average': undefined,
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};
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}
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async createOrder (symbol, type, side, amount, price = undefined, params = {}) {
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await this.loadMarkets ();
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const market = this.market (symbol);
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let order = {
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'symbol': market['id'],
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'type': side,
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'amount': amount,
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};
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if (type === 'market') {
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order['type'] += '_market';
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} else {
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order['price'] = price;
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}
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const response = await this.privatePostCreateOrder (this.extend (order, params));
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order = this.omit (order, 'type');
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order['order_id'] = response['order_id'];
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order['type'] = side;
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order['order_type'] = type;
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order['create_time'] = this.milliseconds ();
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order['info'] = response;
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order = this.parseOrder (order, market);
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const id = order['id'];
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this.orders[id] = order;
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return order;
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}
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async cancelOrder (id, symbol = undefined, params = {}) {
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await this.loadMarkets ();
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const market = this.market (symbol);
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const request = {
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'symbol': market['id'],
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'order_id': id,
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};
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const response = await this.privatePostCancelOrder (this.extend (request, params));
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return response;
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}
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async fetchOrder (id, symbol = undefined, params = {}) {
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// Id can be a list of ids delimited by a comma
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await this.loadMarkets ();
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const market = this.market (symbol);
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const request = {
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'symbol': market['id'],
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'order_id': id,
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};
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const response = await this.privatePostOrdersInfo (this.extend (request, params));
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const orders = this.parseOrders (response['orders'], market);
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const numOrders = orders.length;
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if (numOrders === 1) {
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return orders[0];
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} else {
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return orders;
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}
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}
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async fetchOrders (symbol = undefined, since = undefined, limit = undefined, params = {}) {
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await this.loadMarkets ();
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if (limit === undefined) {
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limit = 100;
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}
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const market = this.market (symbol);
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const request = {
|
||
'symbol': market['id'],
|
||
'current_page': 1,
|
||
'page_length': limit,
|
||
};
|
||
const response = await this.privatePostOrdersInfoHistory (this.extend (request, params));
|
||
return this.parseOrders (response['orders'], undefined, since, limit);
|
||
}
|
||
|
||
async fetchClosedOrders (symbol = undefined, since = undefined, limit = undefined, params = {}) {
|
||
const orders = await this.fetchOrders (symbol, since, limit, params);
|
||
const closed = this.filterBy (orders, 'status', 'closed');
|
||
const canceled = this.filterBy (orders, 'status', 'cancelled'); // cancelled orders may be partially filled
|
||
const allOrders = this.arrayConcat (closed, canceled);
|
||
return this.filterBySymbolSinceLimit (allOrders, symbol, since, limit);
|
||
}
|
||
|
||
async withdraw (code, amount, address, tag = undefined, params = {}) {
|
||
// mark and fee are optional params, mark is a note and must be less than 255 characters
|
||
this.checkAddress (address);
|
||
await this.loadMarkets ();
|
||
const currency = this.currency (code);
|
||
const request = {
|
||
'assetCode': currency['id'],
|
||
'amount': amount,
|
||
'account': address,
|
||
};
|
||
if (tag !== undefined) {
|
||
request['memo'] = tag;
|
||
}
|
||
const response = this.privatePostWithdraw (this.extend (request, params));
|
||
return {
|
||
'id': response['id'],
|
||
'info': response,
|
||
};
|
||
}
|
||
|
||
convertSecretToPem (secret) {
|
||
const lineLength = 64;
|
||
const secretLength = secret.length - 0;
|
||
let numLines = parseInt (secretLength / lineLength);
|
||
numLines = this.sum (numLines, 1);
|
||
let pem = "-----BEGIN PRIVATE KEY-----\n"; // eslint-disable-line
|
||
for (let i = 0; i < numLines; i++) {
|
||
const start = i * lineLength;
|
||
const end = this.sum (start, lineLength);
|
||
pem += this.secret.slice (start, end) + "\n"; // eslint-disable-line
|
||
}
|
||
return pem + '-----END PRIVATE KEY-----';
|
||
}
|
||
|
||
sign (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
|
||
const 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 ();
|
||
const query = this.keysort (this.extend ({
|
||
'api_key': this.apiKey,
|
||
}, params));
|
||
const queryString = this.rawencode (query);
|
||
const message = this.hash (this.encode (queryString)).toUpperCase ();
|
||
const cacheSecretAsPem = this.safeValue (this.options, 'cacheSecretAsPem', true);
|
||
let pem = undefined;
|
||
if (cacheSecretAsPem) {
|
||
pem = this.safeValue (this.options, 'pem');
|
||
if (pem === undefined) {
|
||
pem = this.convertSecretToPem (this.secret);
|
||
this.options['pem'] = pem;
|
||
}
|
||
} else {
|
||
pem = this.convertSecretToPem (this.secret);
|
||
}
|
||
const sign = this.binaryToBase64 (this.rsa (message, this.encode (pem), 'RS256'));
|
||
query['sign'] = sign;
|
||
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) {
|
||
const response = await this.fetch2 (path, api, method, params, headers, body);
|
||
const success = this.safeString (response, 'result');
|
||
if (success === 'false') {
|
||
const errorCode = this.safeString (response, 'error_code');
|
||
const 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',
|
||
'10022': 'Insufficient key authority',
|
||
}, errorCode, this.json (response));
|
||
const 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,
|
||
'10022': AuthenticationError,
|
||
}, errorCode, ExchangeError);
|
||
throw new ErrorClass (message);
|
||
}
|
||
return response;
|
||
}
|
||
};
|