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A JavaScript / Python / PHP cryptocurrency trading library with support for 130+ exchanges

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'use strict'; // --------------------------------------------------------------------------- const Exchange = require ('./base/Exchange'); const { BadSymbol, BadRequest, ExchangeError, ArgumentsRequired, OrderNotFound, OnMaintenance } = require ('./base/errors'); const { TICK_SIZE } = require ('./base/functions/number'); const Precise = require ('./base/Precise'); // --------------------------------------------------------------------------- module.exports = class coinone extends Exchange { describe () { return this.deepExtend (super.describe (), { 'id': 'coinone', 'name': 'CoinOne', 'countries': [ 'KR' ], // Korea // 'enableRateLimit': false, 'rateLimit': 667, 'version': 'v2', 'has': { 'CORS': undefined, 'spot': true, 'margin': false, 'swap': false, 'future': false, 'option': false, 'addMargin': false, 'cancelOrder': true, 'createMarketOrder': undefined, 'createOrder': true, 'createReduceOnlyOrder': false, 'createStopLimitOrder': false, 'createStopMarketOrder': false, 'createStopOrder': false, 'fetchBalance': true, 'fetchBorrowRate': false, 'fetchBorrowRateHistories': false, 'fetchBorrowRateHistory': false, 'fetchBorrowRates': false, 'fetchBorrowRatesPerSymbol': false, 'fetchClosedOrders': undefined, // the endpoint that should return closed orders actually returns trades, https://github.com/ccxt/ccxt/pull/7067 'fetchDepositAddresses': true, 'fetchFundingHistory': false, 'fetchFundingRate': false, 'fetchFundingRateHistory': false, 'fetchFundingRates': false, 'fetchIndexOHLCV': false, 'fetchLeverage': false, 'fetchLeverageTiers': false, 'fetchMarginMode': false, 'fetchMarkets': true, 'fetchMarkOHLCV': false, 'fetchMyTrades': true, 'fetchOpenInterestHistory': false, 'fetchOpenOrders': true, 'fetchOrder': true, 'fetchOrderBook': true, 'fetchPosition': false, 'fetchPositionMode': false, 'fetchPositions': false, 'fetchPositionsRisk': false, 'fetchPremiumIndexOHLCV': false, 'fetchTicker': true, 'fetchTickers': true, 'fetchTrades': true, 'reduceMargin': false, 'setLeverage': false, 'setMarginMode': false, 'setPositionMode': false, }, 'urls': { 'logo': 'https://user-images.githubusercontent.com/1294454/38003300-adc12fba-323f-11e8-8525-725f53c4a659.jpg', 'api': { 'rest': 'https://api.coinone.co.kr', }, 'www': 'https://coinone.co.kr', 'doc': 'https://doc.coinone.co.kr', }, 'requiredCredentials': { 'apiKey': true, 'secret': true, }, 'api': { 'public': { 'get': [ 'orderbook/', 'trades/', 'ticker/', ], }, 'private': { 'post': [ 'account/deposit_address/', 'account/btc_deposit_address/', 'account/balance/', 'account/daily_balance/', 'account/user_info/', 'account/virtual_account/', 'order/cancel_all/', 'order/cancel/', 'order/limit_buy/', 'order/limit_sell/', 'order/complete_orders/', 'order/limit_orders/', 'order/order_info/', 'transaction/auth_number/', 'transaction/history/', 'transaction/krw/history/', 'transaction/btc/', 'transaction/coin/', ], }, }, 'fees': { 'trading': { 'tierBased': false, 'percentage': true, 'taker': 0.002, 'maker': 0.002, }, }, 'precisionMode': TICK_SIZE, 'exceptions': { '405': OnMaintenance, // {"errorCode":"405","status":"maintenance","result":"error"} '104': OrderNotFound, // {"errorCode":"104","errorMsg":"Order id is not exist","result":"error"} '108': BadSymbol, // {"errorCode":"108","errorMsg":"Unknown CryptoCurrency","result":"error"} '107': BadRequest, // {"errorCode":"107","errorMsg":"Parameter error","result":"error"} }, 'commonCurrencies': { 'SOC': 'Soda Coin', }, }); } async fetchMarkets (params = {}) { /** * @method * @name coinone#fetchMarkets * @description retrieves data on all markets for coinone * @param {object} params extra parameters specific to the exchange api endpoint * @returns {[object]} an array of objects representing market data */ const request = { 'currency': 'all', }; const response = await this.publicGetTicker (request); // // { // "result": "success", // "errorCode": "0", // "timestamp": "1643676668", // "xec": { // "currency": "xec", // "first": "0.0914", // "low": "0.0894", // "high": "0.096", // "last": "0.0937", // "volume": "1673283662.9797", // "yesterday_first": "0.0929", // "yesterday_low": "0.0913", // "yesterday_high": "0.0978", // "yesterday_last": "0.0913", // "yesterday_volume": "1167285865.4571" // }, // ... // } // const result = []; const quoteId = 'krw'; const quote = this.safeCurrencyCode (quoteId); const baseIds = Object.keys (response); for (let i = 0; i < baseIds.length; i++) { const baseId = baseIds[i]; const ticker = this.safeValue (response, baseId, {}); const currency = this.safeValue (ticker, 'currency'); if (currency === undefined) { continue; } const base = this.safeCurrencyCode (baseId); result.push ({ 'id': baseId, 'symbol': base + '/' + quote, 'base': base, 'quote': quote, 'settle': undefined, 'baseId': baseId, 'quoteId': quoteId, 'settleId': undefined, 'type': 'spot', 'spot': true, 'margin': false, 'swap': false, 'future': false, 'option': false, 'active': undefined, 'contract': false, 'linear': undefined, 'inverse': undefined, 'contractSize': undefined, 'expiry': undefined, 'expiryDatetime': undefined, 'strike': undefined, 'optionType': undefined, 'precision': { 'amount': this.parseNumber ('1e-4'), 'price': this.parseNumber ('1e-4'), 'cost': this.parseNumber ('1e-8'), }, 'limits': { 'leverage': { 'min': undefined, 'max': undefined, }, 'amount': { 'min': undefined, 'max': undefined, }, 'price': { 'min': undefined, 'max': undefined, }, 'cost': { 'min': undefined, 'max': undefined, }, }, 'info': ticker, }); } return result; } parseBalance (response) { const result = { 'info': response }; const balances = this.omit (response, [ 'errorCode', 'result', 'normalWallets', ]); const currencyIds = Object.keys (balances); for (let i = 0; i < currencyIds.length; i++) { const currencyId = currencyIds[i]; const balance = balances[currencyId]; const code = this.safeCurrencyCode (currencyId); const account = this.account (); account['free'] = this.safeString (balance, 'avail'); account['total'] = this.safeString (balance, 'balance'); result[code] = account; } return this.safeBalance (result); } async fetchBalance (params = {}) { /** * @method * @name coinone#fetchBalance * @description query for balance and get the amount of funds available for trading or funds locked in orders * @param {object} params extra parameters specific to the coinone api endpoint * @returns {object} a [balance structure]{@link https://docs.ccxt.com/en/latest/manual.html?#balance-structure} */ await this.loadMarkets (); const response = await this.privatePostAccountBalance (params); return this.parseBalance (response); } async fetchOrderBook (symbol, limit = undefined, params = {}) { /** * @method * @name coinone#fetchOrderBook * @description fetches information on open orders with bid (buy) and ask (sell) prices, volumes and other data * @param {string} symbol unified symbol of the market to fetch the order book for * @param {int|undefined} limit the maximum amount of order book entries to return * @param {object} params extra parameters specific to the coinone api endpoint * @returns {object} A dictionary of [order book structures]{@link https://docs.ccxt.com/en/latest/manual.html#order-book-structure} indexed by market symbols */ await this.loadMarkets (); const market = this.market (symbol); const request = { 'currency': market['id'], 'format': 'json', }; const response = await this.publicGetOrderbook (this.extend (request, params)); const timestamp = this.safeTimestamp (response, 'timestamp'); return this.parseOrderBook (response, market['symbol'], timestamp, 'bid', 'ask', 'price', 'qty'); } async fetchTickers (symbols = undefined, params = {}) { /** * @method * @name coinone#fetchTickers * @description fetches price tickers for multiple markets, statistical calculations with the information calculated over the past 24 hours each market * @param {[string]|undefined} symbols unified symbols of the markets to fetch the ticker for, all market tickers are returned if not assigned * @param {object} params extra parameters specific to the coinone api endpoint * @returns {object} an array of [ticker structures]{@link https://docs.ccxt.com/en/latest/manual.html#ticker-structure} */ await this.loadMarkets (); symbols = this.marketSymbols (symbols); const request = { 'currency': 'all', 'format': 'json', }; const response = await this.publicGetTicker (this.extend (request, params)); const result = {}; const ids = Object.keys (response); const timestamp = this.safeTimestamp (response, 'timestamp'); for (let i = 0; i < ids.length; i++) { const id = ids[i]; const market = this.safeMarket (id); const symbol = market['symbol']; const ticker = response[id]; result[symbol] = this.parseTicker (ticker, market); result[symbol]['timestamp'] = timestamp; } return this.filterByArray (result, 'symbol', symbols); } async fetchTicker (symbol, params = {}) { /** * @method * @name coinone#fetchTicker * @description fetches a price ticker, a statistical calculation with the information calculated over the past 24 hours for a specific market * @param {string} symbol unified symbol of the market to fetch the ticker for * @param {object} params extra parameters specific to the coinone api endpoint * @returns {object} a [ticker structure]{@link https://docs.ccxt.com/en/latest/manual.html#ticker-structure} */ await this.loadMarkets (); const market = this.market (symbol); const request = { 'currency': market['id'], 'format': 'json', }; const response = await this.publicGetTicker (this.extend (request, params)); return this.parseTicker (response, market); } parseTicker (ticker, market = undefined) { // // { // "currency":"xec", // "first":"0.1069", // "low":"0.09", // "high":"0.1069", // "last":"0.0911", // "volume":"4591217267.4974", // "yesterday_first":"0.1128", // "yesterday_low":"0.1035", // "yesterday_high":"0.1167", // "yesterday_last":"0.1069", // "yesterday_volume":"4014832231.5102" // } // const timestamp = this.safeTimestamp (ticker, 'timestamp'); const open = this.safeString (ticker, 'first'); const last = this.safeString (ticker, 'last'); const previousClose = this.safeString (ticker, 'yesterday_last'); const symbol = this.safeSymbol (undefined, market); return this.safeTicker ({ 'symbol': symbol, 'timestamp': timestamp, 'datetime': this.iso8601 (timestamp), 'high': this.safeString (ticker, 'high'), 'low': this.safeString (ticker, 'low'), 'bid': undefined, 'bidVolume': undefined, 'ask': undefined, 'askVolume': undefined, 'vwap': undefined, 'open': open, 'close': last, 'last': last, 'previousClose': previousClose, 'change': undefined, 'percentage': undefined, 'average': undefined, 'baseVolume': this.safeString (ticker, 'volume'), 'quoteVolume': undefined, 'info': ticker, }, market); } parseTrade (trade, market = undefined) { // // fetchTrades (public) // // { // "timestamp": "1416893212", // "price": "420000.0", // "qty": "0.1", // "is_ask": "1" // } // // fetchMyTrades (private) // // { // "timestamp": "1416561032", // "price": "419000.0", // "type": "bid", // "qty": "0.001", // "feeRate": "-0.0015", // "fee": "-0.0000015", // "orderId": "E84A1AC2-8088-4FA0-B093-A3BCDB9B3C85" // } // const timestamp = this.safeTimestamp (trade, 'timestamp'); market = this.safeMarket (undefined, market); const is_ask = this.safeString (trade, 'is_ask'); let side = this.safeString (trade, 'type'); if (is_ask !== undefined) { if (is_ask === '1') { side = 'sell'; } else if (is_ask === '0') { side = 'buy'; } } else { if (side === 'ask') { side = 'sell'; } else if (side === 'bid') { side = 'buy'; } } const priceString = this.safeString (trade, 'price'); const amountString = this.safeString (trade, 'qty'); const orderId = this.safeString (trade, 'orderId'); let feeCostString = this.safeString (trade, 'fee'); let fee = undefined; if (feeCostString !== undefined) { feeCostString = Precise.stringAbs (feeCostString); let feeRateString = this.safeString (trade, 'feeRate'); feeRateString = Precise.stringAbs (feeRateString); const feeCurrencyCode = (side === 'sell') ? market['quote'] : market['base']; fee = { 'cost': feeCostString, 'currency': feeCurrencyCode, 'rate': feeRateString, }; } return this.safeTrade ({ 'id': this.safeString (trade, 'id'), 'info': trade, 'timestamp': timestamp, 'datetime': this.iso8601 (timestamp), 'order': orderId, 'symbol': market['symbol'], 'type': undefined, 'side': side, 'takerOrMaker': undefined, 'price': priceString, 'amount': amountString, 'cost': undefined, 'fee': fee, }, market); } async fetchTrades (symbol, since = undefined, limit = undefined, params = {}) { /** * @method * @name coinone#fetchTrades * @description get the list of most recent trades for a particular symbol * @param {string} symbol unified symbol of the market to fetch trades for * @param {int|undefined} since timestamp in ms of the earliest trade to fetch * @param {int|undefined} limit the maximum amount of trades to fetch * @param {object} params extra parameters specific to the coinone api endpoint * @returns {[object]} a list of [trade structures]{@link https://docs.ccxt.com/en/latest/manual.html?#public-trades} */ await this.loadMarkets (); const market = this.market (symbol); const request = { 'currency': market['id'], 'format': 'json', }; const response = await this.publicGetTrades (this.extend (request, params)); // // { // "result": "success", // "errorCode": "0", // "timestamp": "1416895635", // "currency": "btc", // "completeOrders": [ // { // "timestamp": "1416893212", // "price": "420000.0", // "qty": "0.1", // "is_ask": "1" // } // ] // } // const completeOrders = this.safeValue (response, 'completeOrders', []); return this.parseTrades (completeOrders, market, since, limit); } async createOrder (symbol, type, side, amount, price = undefined, params = {}) { /** * @method * @name coinone#createOrder * @description create a trade order * @param {string} symbol unified symbol of the market to create an order in * @param {string} type 'market' or 'limit' * @param {string} side 'buy' or 'sell' * @param {float} amount how much of currency you want to trade in units of base currency * @param {float|undefined} price the price at which the order is to be fullfilled, in units of the quote currency, ignored in market orders * @param {object} params extra parameters specific to the coinone api endpoint * @returns {object} an [order structure]{@link https://docs.ccxt.com/en/latest/manual.html#order-structure} */ if (type !== 'limit') { throw new ExchangeError (this.id + ' createOrder() allows limit orders only'); } await this.loadMarkets (); const market = this.market (symbol); const request = { 'price': price, 'currency': market['id'], 'qty': amount, }; const method = 'privatePostOrder' + this.capitalize (type) + this.capitalize (side); const response = await this[method] (this.extend (request, params)); // // { // "result": "success", // "errorCode": "0", // "orderId": "8a82c561-40b4-4cb3-9bc0-9ac9ffc1d63b" // } // return this.parseOrder (response, market); } async fetchOrder (id, symbol = undefined, params = {}) { /** * @method * @name coinone#fetchOrder * @description fetches information on an order made by the user * @param {string} symbol unified symbol of the market the order was made in * @param {object} params extra parameters specific to the coinone api endpoint * @returns {object} An [order structure]{@link https://docs.ccxt.com/en/latest/manual.html#order-structure} */ if (symbol === undefined) { throw new ArgumentsRequired (this.id + ' fetchOrder() requires a symbol argument'); } await this.loadMarkets (); const market = this.market (symbol); const request = { 'order_id': id, 'currency': market['id'], }; const response = await this.privatePostOrderOrderInfo (this.extend (request, params)); // // { // "result": "success", // "errorCode": "0", // "status": "live", // "info": { // "orderId": "32FF744B-D501-423A-8BA1-05BB6BE7814A", // "currency": "BTC", // "type": "bid", // "price": "2922000.0", // "qty": "115.4950", // "remainQty": "45.4950", // "feeRate": "0.0003", // "fee": "0", // "timestamp": "1499340941" // } // } // const info = this.safeValue (response, 'info', {}); info['status'] = this.safeString (info, 'status'); return this.parseOrder (info, market); } parseOrderStatus (status) { const statuses = { 'live': 'open', 'partially_filled': 'open', 'filled': 'closed', }; return this.safeString (statuses, status, status); } parseOrder (order, market = undefined) { // // createOrder // // { // "result": "success", // "errorCode": "0", // "orderId": "8a82c561-40b4-4cb3-9bc0-9ac9ffc1d63b" // } // // fetchOrder // // { // "status": "live", // injected in fetchOrder // "orderId": "32FF744B-D501-423A-8BA1-05BB6BE7814A", // "currency": "BTC", // "type": "bid", // "price": "2922000.0", // "qty": "115.4950", // "remainQty": "45.4950", // "feeRate": "0.0003", // "fee": "0", // "timestamp": "1499340941" // } // // fetchOpenOrders // // { // "index": "0", // "orderId": "68665943-1eb5-4e4b-9d76-845fc54f5489", // "timestamp": "1449037367", // "price": "444000.0", // "qty": "0.3456", // "type": "ask", // "feeRate": "-0.0015" // } // const id = this.safeString (order, 'orderId'); const priceString = this.safeString (order, 'price'); const timestamp = this.safeTimestamp (order, 'timestamp'); let side = this.safeString (order, 'type'); if (side === 'ask') { side = 'sell'; } else if (side === 'bid') { side = 'buy'; } const remainingString = this.safeString (order, 'remainQty'); const amountString = this.safeString (order, 'qty'); let status = this.safeString (order, 'status'); // https://github.com/ccxt/ccxt/pull/7067 if (status === 'live') { if ((remainingString !== undefined) && (amountString !== undefined)) { const isLessThan = Precise.stringLt (remainingString, amountString); if (isLessThan) { status = 'canceled'; } } } status = this.parseOrderStatus (status); const symbol = market['symbol']; const base = market['base']; const quote = market['quote']; let fee = undefined; const feeCostString = this.safeString (order, 'fee'); if (feeCostString !== undefined) { const feeCurrencyCode = (side === 'sell') ? quote : base; fee = { 'cost': feeCostString, 'rate': this.safeString (order, 'feeRate'), 'currency': feeCurrencyCode, }; } return this.safeOrder ({ 'info': order, 'id': id, 'clientOrderId': undefined, 'timestamp': timestamp, 'datetime': this.iso8601 (timestamp), 'lastTradeTimestamp': undefined, 'symbol': symbol, 'type': 'limit', 'timeInForce': undefined, 'postOnly': undefined, 'side': side, 'price': priceString, 'stopPrice': undefined, 'cost': undefined, 'average': undefined, 'amount': amountString, 'filled': undefined, 'remaining': remainingString, 'status': status, 'fee': fee, 'trades': undefined, }, market); } async fetchOpenOrders (symbol = undefined, since = undefined, limit = undefined, params = {}) { /** * @method * @name coinone#fetchOpenOrders * @description fetch all unfilled currently open orders * @param {string} symbol unified market symbol * @param {int|undefined} since the earliest time in ms to fetch open orders for * @param {int|undefined} limit the maximum number of open orders structures to retrieve * @param {object} params extra parameters specific to the coinone api endpoint * @returns {[object]} a list of [order structures]{@link https://docs.ccxt.com/en/latest/manual.html#order-structure} */ // The returned amount might not be same as the ordered amount. If an order is partially filled, the returned amount means the remaining amount. // For the same reason, the returned amount and remaining are always same, and the returned filled and cost are always zero. if (symbol === undefined) { throw new ExchangeError (this.id + ' fetchOpenOrders() allows fetching closed orders with a specific symbol'); } await this.loadMarkets (); const market = this.market (symbol); const request = { 'currency': market['id'], }; const response = await this.privatePostOrderLimitOrders (this.extend (request, params)); // // { // "result": "success", // "errorCode": "0", // "limitOrders": [ // { // "index": "0", // "orderId": "68665943-1eb5-4e4b-9d76-845fc54f5489", // "timestamp": "1449037367", // "price": "444000.0", // "qty": "0.3456", // "type": "ask", // "feeRate": "-0.0015" // } // ] // } // const limitOrders = this.safeValue (response, 'limitOrders', []); return this.parseOrders (limitOrders, market, since, limit); } async fetchMyTrades (symbol = undefined, since = undefined, limit = undefined, params = {}) { /** * @method * @name coinone#fetchMyTrades * @description fetch all trades made by the user * @param {string} symbol unified market symbol * @param {int|undefined} since the earliest time in ms to fetch trades for * @param {int|undefined} limit the maximum number of trades structures to retrieve * @param {object} params extra parameters specific to the coinone api endpoint * @returns {[object]} a list of [trade structures]{@link https://docs.ccxt.com/en/latest/manual.html#trade-structure} */ if (symbol === undefined) { throw new ArgumentsRequired (this.id + ' fetchMyTrades() requires a symbol argument'); } await this.loadMarkets (); const market = this.market (symbol); const request = { 'currency': market['id'], }; const response = await this.privatePostOrderCompleteOrders (this.extend (request, params)); // // despite the name of the endpoint it returns trades which may have a duplicate orderId // https://github.com/ccxt/ccxt/pull/7067 // // { // "result": "success", // "errorCode": "0", // "completeOrders": [ // { // "timestamp": "1416561032", // "price": "419000.0", // "type": "bid", // "qty": "0.001", // "feeRate": "-0.0015", // "fee": "-0.0000015", // "orderId": "E84A1AC2-8088-4FA0-B093-A3BCDB9B3C85" // } // ] // } // const completeOrders = this.safeValue (response, 'completeOrders', []); return this.parseTrades (completeOrders, market, since, limit); } async cancelOrder (id, symbol = undefined, params = {}) { /** * @method * @name coinone#cancelOrder * @description cancels an open order * @param {string} id order id * @param {string} symbol unified symbol of the market the order was made in * @param {object} params extra parameters specific to the coinone api endpoint * @returns {object} An [order structure]{@link https://docs.ccxt.com/en/latest/manual.html#order-structure} */ if (symbol === undefined) { // eslint-disable-next-line quotes throw new ArgumentsRequired (this.id + " cancelOrder() requires a symbol argument. To cancel the order, pass a symbol argument and {'price': 12345, 'qty': 1.2345, 'is_ask': 0} in the params argument of cancelOrder."); } const price = this.safeNumber (params, 'price'); const qty = this.safeNumber (params, 'qty'); const isAsk = this.safeInteger (params, 'is_ask'); if ((price === undefined) || (qty === undefined) || (isAsk === undefined)) { // eslint-disable-next-line quotes throw new ArgumentsRequired (this.id + " cancelOrder() requires {'price': 12345, 'qty': 1.2345, 'is_ask': 0} in the params argument."); } await this.loadMarkets (); const request = { 'order_id': id, 'price': price, 'qty': qty, 'is_ask': isAsk, 'currency': this.marketId (symbol), }; const response = await this.privatePostOrderCancel (this.extend (request, params)); // // { // "result": "success", // "errorCode": "0" // } // return response; } async fetchDepositAddresses (codes = undefined, params = {}) { /** * @method * @name coinone#fetchDepositAddresses * @description fetch deposit addresses for multiple currencies and chain types * @param {[string]|undefined} codes list of unified currency codes, default is undefined * @param {object} params extra parameters specific to the coinone api endpoint * @returns {object} a list of [address structures]{@link https://docs.ccxt.com/en/latest/manual.html#address-structure} */ await this.loadMarkets (); const response = await this.privatePostAccountDepositAddress (params); // // { // result: 'success', // errorCode: '0', // walletAddress: { // matic: null, // btc: "mnobqu4i6qMCJWDpf5UimRmr8JCvZ8FLcN", // xrp: null, // xrp_tag: '-1', // kava: null, // kava_memo: null, // } // } // const walletAddress = this.safeValue (response, 'walletAddress', {}); const keys = Object.keys (walletAddress); const result = {}; for (let i = 0; i < keys.length; i++) { const key = keys[i]; const value = walletAddress[key]; if ((!value) || (value === '-1')) { continue; } const parts = key.split ('_'); const currencyId = this.safeValue (parts, 0); const secondPart = this.safeValue (parts, 1); const code = this.safeCurrencyCode (currencyId); let depositAddress = this.safeValue (result, code); if (depositAddress === undefined) { depositAddress = { 'currency': code, 'address': undefined, 'tag': undefined, 'info': value, }; } const address = this.safeString (depositAddress, 'address', value); this.checkAddress (address); depositAddress['address'] = address; depositAddress['info'] = address; if ((secondPart === 'tag' || secondPart === 'memo')) { depositAddress['tag'] = value; depositAddress['info'] = [ address, value ]; } result[code] = depositAddress; } return result; } sign (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) { const request = this.implodeParams (path, params); const query = this.omit (params, this.extractParams (path)); let url = this.urls['api']['rest'] + '/'; if (api === 'public') { url += request; if (Object.keys (query).length) { url += '?' + this.urlencode (query); } } else { this.checkRequiredCredentials (); url += this.version + '/' + request; const nonce = this.nonce ().toString (); const json = this.json (this.extend ({ 'access_token': this.apiKey, 'nonce': nonce, }, params)); const payload = this.stringToBase64 (json); body = this.decode (payload); const secret = this.secret.toUpperCase (); const signature = this.hmac (payload, this.encode (secret), 'sha512'); headers = { 'Content-Type': 'application/json', 'X-COINONE-PAYLOAD': payload, 'X-COINONE-SIGNATURE': signature, }; } return { 'url': url, 'method': method, 'body': body, 'headers': headers }; } handleErrors (code, reason, url, method, headers, body, response, requestHeaders, requestBody) { if (response === undefined) { return; } if ('result' in response) { const result = response['result']; if (result !== 'success') { // // { "errorCode": "405", "status": "maintenance", "result": "error"} // const errorCode = this.safeString (response, 'errorCode'); const feedback = this.id + ' ' + body; this.throwExactlyMatchedException (this.exceptions, errorCode, feedback); throw new ExchangeError (feedback); } } else { throw new ExchangeError (this.id + ' ' + body); } } };