UNPKG

ccxt-xigua

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

2,076 lines 95 kB
'use strict';

//  ---------------------------------------------------------------------------

const { ArgumentsRequired, ExchangeNotAvailable, InvalidOrder, InsufficientFunds, AccountSuspended, InvalidNonce, NotSupported, OrderNotFound, BadRequest, AuthenticationError, RateLimitExceeded, PermissionDenied } = require ('./base/errors');
const Precise = require ('./base/Precise');
const kucoin = require ('./kucoin.js');
const { TICK_SIZE } = require ('./base/functions/number');

//  ---------------------------------------------------------------------------

module.exports = class kucoinfutures extends kucoin {
    describe () {
        return this.deepExtend (super.describe (), {
            'id': 'kucoinfutures',
            'name': 'KuCoin Futures',
            'countries': [ 'SC' ],
            'rateLimit': 75,
            'version': 'v1',
            'certified': false,
            'pro': false,
            'comment': 'Platform 2.0',
            'quoteJsonNumbers': false,
            'has': {
                'CORS': undefined,
                'spot': false,
                'margin': false,
                'swap': true,
                'future': true,
                'option': false,
                'addMargin': true,
                'cancelAllOrders': true,
                'cancelOrder': true,
                'createDepositAddress': true,
                'createOrder': true,
                'createStopLimitOrder': true,
                'createStopMarketOrder': true,
                'createStopOrder': true,
                'fetchAccounts': true,
                'fetchBalance': true,
                'fetchBorrowRate': false,
                'fetchBorrowRateHistories': false,
                'fetchBorrowRateHistory': false,
                'fetchBorrowRates': false,
                'fetchBorrowRatesPerSymbol': false,
                'fetchClosedOrders': true,
                'fetchCurrencies': false,
                'fetchDepositAddress': true,
                'fetchDeposits': true,
                'fetchFundingHistory': true,
                'fetchFundingRate': true,
                'fetchFundingRateHistory': false,
                'fetchIndexOHLCV': false,
                'fetchL3OrderBook': true,
                'fetchLedger': true,
                'fetchLeverageTiers': false,
                'fetchMarginMode': false,
                'fetchMarketLeverageTiers': true,
                'fetchMarkets': true,
                'fetchMarkOHLCV': false,
                'fetchMyTrades': true,
                'fetchOHLCV': true,
                'fetchOpenOrders': true,
                'fetchOrder': true,
                'fetchOrderBook': true,
                'fetchPositionMode': false,
                'fetchPositions': true,
                'fetchPremiumIndexOHLCV': false,
                'fetchStatus': true,
                'fetchTicker': true,
                'fetchTickers': false,
                'fetchTime': true,
                'fetchTrades': true,
                'fetchTransactionFee': true,
                'fetchWithdrawals': true,
                'setMarginMode': false,
                'transfer': true,
                'withdraw': undefined,
            },
            'urls': {
                'logo': 'https://user-images.githubusercontent.com/1294454/147508995-9e35030a-d046-43a1-a006-6fabd981b554.jpg',
                'doc': [
                    'https://docs.kucoin.com/futures',
                    'https://docs.kucoin.com',
                ],
                'www': 'https://futures.kucoin.com/',
                'referral': 'https://futures.kucoin.com/?rcode=E5wkqe',
                'api': {
                    'public': 'https://openapi-v2.kucoin.com',
                    'private': 'https://openapi-v2.kucoin.com',
                    'futuresPrivate': 'https://api-futures.kucoin.com',
                    'futuresPublic': 'https://api-futures.kucoin.com',
                },
                'test': {
                    'public': 'https://openapi-sandbox.kucoin.com',
                    'private': 'https://openapi-sandbox.kucoin.com',
                    'futuresPrivate': 'https://api-sandbox-futures.kucoin.com',
                    'futuresPublic': 'https://api-sandbox-futures.kucoin.com',
                },
            },
            'requiredCredentials': {
                'apiKey': true,
                'secret': true,
                'password': true,
            },
            'api': {
                'futuresPublic': {
                    'get': {
                        'contracts/active': 1,
                        'contracts/{symbol}': 1,
                        'contracts/risk-limit/{symbol}': 1,
                        'ticker': 1,
                        'level2/snapshot': 1.33,
                        'level2/depth{limit}': 1,
                        'level2/message/query': 1,
                        'level3/message/query': 1, // deprecated,level3/snapshot is suggested
                        'level3/snapshot': 1, // v2
                        'trade/history': 1,
                        'interest/query': 1,
                        'index/query': 1,
                        'mark-price/{symbol}/current': 1,
                        'premium/query': 1,
                        'funding-rate/{symbol}/current': 1,
                        'timestamp': 1,
                        'status': 1,
                        'kline/query': 1,
                    },
                    'post': {
                        'bullet-public': 1,
                    },
                },
                'futuresPrivate': {
                    'get': {
                        'account-overview': 1.33,
                        'transaction-history': 4.44,
                        'deposit-address': 1,
                        'deposit-list': 1,
                        'withdrawals/quotas': 1,
                        'withdrawal-list': 1,
                        'transfer-list': 1,
                        'orders': 1.33,
                        'stopOrders': 1,
                        'recentDoneOrders': 1,
                        'orders/{orderId}': 1, // ?clientOid={client-order-id} // get order by orderId
                        'orders/byClientOid': 1, // ?clientOid=eresc138b21023a909e5ad59 // get order by clientOid
                        'fills': 4.44,
                        'recentFills': 4.44,
                        'openOrderStatistics': 1,
                        'position': 1,
                        'positions': 4.44,
                        'funding-history': 4.44,
                    },
                    'post': {
                        'withdrawals': 1,
                        'transfer-out': 1, // v2
                        'orders': 1.33,
                        'position/margin/auto-deposit-status': 1,
                        'position/margin/deposit-margin': 1,
                        'bullet-private': 1,
                    },
                    'delete': {
                        'withdrawals/{withdrawalId}': 1,
                        'cancel/transfer-out': 1,
                        'orders/{orderId}': 1,
                        'orders': 4.44,
                        'stopOrders': 1,
                    },
                },
            },
            'precisionMode': TICK_SIZE,
            'exceptions': {
                'exact': {
                    '400': BadRequest, // Bad Request -- Invalid request format
                    '401': AuthenticationError, // Unauthorized -- Invalid API Key
                    '403': NotSupported, // Forbidden -- The request is forbidden
                    '404': NotSupported, // Not Found -- The specified resource could not be found
                    '405': NotSupported, // Method Not Allowed -- You tried to access the resource with an invalid method.
                    '415': BadRequest,  // Content-Type -- application/json
                    '429': RateLimitExceeded, // Too Many Requests -- Access limit breached
                    '500': ExchangeNotAvailable, // Internal Server Error -- We had a problem with our server. Try again later.
                    '503': ExchangeNotAvailable, // Service Unavailable -- We're temporarily offline for maintenance. Please try again later.
                    '100001': InvalidOrder,     // {"code":"100001","msg":"Unavailable to enable both \"postOnly\" and \"hidden\""}
                    '100004': BadRequest,       // {"code":"100004","msg":"Order is in not cancelable state"}
                    '101030': PermissionDenied, // {"code":"101030","msg":"You haven't yet enabled the margin trading"}
                    '200004': InsufficientFunds,
                    '230003': InsufficientFunds, // {"code":"230003","msg":"Balance insufficient!"}
                    '260100': InsufficientFunds, // {"code":"260100","msg":"account.noBalance"}
                    '300003': InsufficientFunds,
                    '300012': InvalidOrder,
                    '400001': AuthenticationError, // Any of KC-API-KEY, KC-API-SIGN, KC-API-TIMESTAMP, KC-API-PASSPHRASE is missing in your request header.
                    '400002': InvalidNonce, // KC-API-TIMESTAMP Invalid -- Time differs from server time by more than 5 seconds
                    '400003': AuthenticationError, // KC-API-KEY not exists
                    '400004': AuthenticationError, // KC-API-PASSPHRASE error
                    '400005': AuthenticationError, // Signature error -- Please check your signature
                    '400006': AuthenticationError, // The IP address is not in the API whitelist
                    '400007': AuthenticationError, // Access Denied -- Your API key does not have sufficient permissions to access the URI
                    '404000': NotSupported, // URL Not Found -- The requested resource could not be found
                    '400100': BadRequest, // Parameter Error -- You tried to access the resource with invalid parameters
                    '411100': AccountSuspended, // User is frozen -- Please contact us via support center
                    '500000': ExchangeNotAvailable, // Internal Server Error -- We had a problem with our server. Try again later.
                },
                'broad': {
                    'Position does not exist': OrderNotFound, // { "code":"200000", "msg":"Position does not exist" }
                },
            },
            'fees': {
                'trading': {
                    'tierBased': true,
                    'percentage': true,
                    'taker': this.parseNumber ('0.0006'),
                    'maker': this.parseNumber ('0.0002'),
                    'tiers': {
                        'taker': [
                            [ this.parseNumber ('0'), this.parseNumber ('0.0006') ],
                            [ this.parseNumber ('50'), this.parseNumber ('0.0006') ],
                            [ this.parseNumber ('200'), this.parseNumber ('0.0006') ],
                            [ this.parseNumber ('500'), this.parseNumber ('0.0005') ],
                            [ this.parseNumber ('1000'), this.parseNumber ('0.0004') ],
                            [ this.parseNumber ('2000'), this.parseNumber ('0.0004') ],
                            [ this.parseNumber ('4000'), this.parseNumber ('0.00038') ],
                            [ this.parseNumber ('8000'), this.parseNumber ('0.00035') ],
                            [ this.parseNumber ('15000'), this.parseNumber ('0.00032') ],
                            [ this.parseNumber ('25000'), this.parseNumber ('0.0003') ],
                            [ this.parseNumber ('40000'), this.parseNumber ('0.0003') ],
                            [ this.parseNumber ('60000'), this.parseNumber ('0.0003') ],
                            [ this.parseNumber ('80000'), this.parseNumber ('0.0003') ],
                        ],
                        'maker': [
                            [ this.parseNumber ('0'), this.parseNumber ('0.02') ],
                            [ this.parseNumber ('50'), this.parseNumber ('0.015') ],
                            [ this.parseNumber ('200'), this.parseNumber ('0.01') ],
                            [ this.parseNumber ('500'), this.parseNumber ('0.01') ],
                            [ this.parseNumber ('1000'), this.parseNumber ('0.01') ],
                            [ this.parseNumber ('2000'), this.parseNumber ('0') ],
                            [ this.parseNumber ('4000'), this.parseNumber ('0') ],
                            [ this.parseNumber ('8000'), this.parseNumber ('0') ],
                            [ this.parseNumber ('15000'), this.parseNumber ('-0.003') ],
                            [ this.parseNumber ('25000'), this.parseNumber ('-0.006') ],
                            [ this.parseNumber ('40000'), this.parseNumber ('-0.009') ],
                            [ this.parseNumber ('60000'), this.parseNumber ('-0.012') ],
                            [ this.parseNumber ('80000'), this.parseNumber ('-0.015') ],
                        ],
                    },
                },
                'funding': {
                    'tierBased': false,
                    'percentage': false,
                    'withdraw': {},
                    'deposit': {},
                },
            },
            'commonCurrencies': {
                'HOT': 'HOTNOW',
                'EDGE': 'DADI', // https://github.com/ccxt/ccxt/issues/5756
                'WAX': 'WAXP',
                'TRY': 'Trias',
                'VAI': 'VAIOT',
                'XBT': 'BTC',
            },
            'timeframes': {
                '1m': 1,
                '3m': undefined,
                '5m': 5,
                '15m': 15,
                '30m': 30,
                '1h': 60,
                '2h': 120,
                '4h': 240,
                '6h': undefined,
                '8h': 480,
                '12h': 720,
                '1d': 1440,
                '1w': 10080,
            },
            'options': {
                'version': 'v1',
                'symbolSeparator': '-',
                'defaultType': 'swap',
                'code': 'USDT',
                'marginModes': {},
                'marginTypes': {},
                // endpoint versions
                'versions': {
                    'futuresPrivate': {
                        'POST': {
                            'transfer-out': 'v2',
                        },
                    },
                    'futuresPublic': {
                        'GET': {
                            'level3/snapshot': 'v2',
                        },
                    },
                },
                'networks': {
                    'OMNI': 'omni',
                    'ERC20': 'eth',
                    'TRC20': 'trx',
                },
                // 'code': 'BTC',
                // 'fetchBalance': {
                //    'code': 'BTC',
                // },
            },
        });
    }

    async fetchAccounts (params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchAccounts
         * @description fetch all the accounts associated with a profile
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} a dictionary of [account structures]{@link https://docs.ccxt.com/en/latest/manual.html#account-structure} indexed by the account type
         */
        throw new BadRequest (this.id + ' fetchAccounts() is not supported yet');
    }

    async fetchStatus (params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchStatus
         * @description the latest known information on the availability of the exchange API
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} a [status structure]{@link https://docs.ccxt.com/en/latest/manual.html#exchange-status-structure}
         */
        const response = await this.futuresPublicGetStatus (params);
        //
        //     {
        //         "code":"200000",
        //         "data":{
        //             "status": "open", // open, close, cancelonly
        //             "msg": "upgrade match engine" // remark for operation when status not open
        //         }
        //     }
        //
        const data = this.safeValue (response, 'data', {});
        const status = this.safeString (data, 'status');
        return {
            'status': (status === 'open') ? 'ok' : 'maintenance',
            'updated': undefined,
            'eta': undefined,
            'url': undefined,
            'info': response,
        };
    }

    async fetchMarkets (params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchMarkets
         * @description retrieves data on all markets for kucoinfutures
         * @param {dict} params extra parameters specific to the exchange api endpoint
         * @returns {[dict]} an array of objects representing market data
         */
        const response = await this.futuresPublicGetContractsActive (params);
        //
        //    {
        //        "code": "200000",
        //        "data": {
        //            "symbol": "ETHUSDTM",
        //            "rootSymbol": "USDT",
        //            "type": "FFWCSX",
        //            "firstOpenDate": 1591086000000,
        //            "expireDate": null,
        //            "settleDate": null,
        //            "baseCurrency": "ETH",
        //            "quoteCurrency": "USDT",
        //            "settleCurrency": "USDT",
        //            "maxOrderQty": 1000000,
        //            "maxPrice": 1000000.0000000000,
        //            "lotSize": 1,
        //            "tickSize": 0.05,
        //            "indexPriceTickSize": 0.01,
        //            "multiplier": 0.01,
        //            "initialMargin": 0.01,
        //            "maintainMargin": 0.005,
        //            "maxRiskLimit": 1000000,
        //            "minRiskLimit": 1000000,
        //            "riskStep": 500000,
        //            "makerFeeRate": 0.00020,
        //            "takerFeeRate": 0.00060,
        //            "takerFixFee": 0.0000000000,
        //            "makerFixFee": 0.0000000000,
        //            "settlementFee": null,
        //            "isDeleverage": true,
        //            "isQuanto": true,
        //            "isInverse": false,
        //            "markMethod": "FairPrice",
        //            "fairMethod": "FundingRate",
        //            "fundingBaseSymbol": ".ETHINT8H",
        //            "fundingQuoteSymbol": ".USDTINT8H",
        //            "fundingRateSymbol": ".ETHUSDTMFPI8H",
        //            "indexSymbol": ".KETHUSDT",
        //            "settlementSymbol": "",
        //            "status": "Open",
        //            "fundingFeeRate": 0.000535,
        //            "predictedFundingFeeRate": 0.002197,
        //            "openInterest": "8724443",
        //            "turnoverOf24h": 341156641.03354263,
        //            "volumeOf24h": 74833.54000000,
        //            "markPrice": 4534.07,
        //            "indexPrice":4531.92,
        //            "lastTradePrice": 4545.4500000000,
        //            "nextFundingRateTime": 25481884,
        //            "maxLeverage": 100,
        //            "sourceExchanges":  [
        //                "huobi",
        //                "Okex",
        //                "Binance",
        //                "Kucoin",
        //                "Poloniex",
        //                "Hitbtc"
        //            ],
        //            "premiumsSymbol1M": ".ETHUSDTMPI",
        //            "premiumsSymbol8H": ".ETHUSDTMPI8H",
        //            "fundingBaseSymbol1M": ".ETHINT",
        //            "fundingQuoteSymbol1M": ".USDTINT",
        //            "lowPrice": 4456.90,
        //            "highPrice":  4674.25,
        //            "priceChgPct": 0.0046,
        //            "priceChg": 21.15
        //        }
        //    }
        //
        const result = [];
        const data = this.safeValue (response, 'data', []);
        for (let i = 0; i < data.length; i++) {
            const market = data[i];
            const id = this.safeString (market, 'symbol');
            const expiry = this.safeInteger (market, 'expireDate');
            const future = expiry ? true : false;
            const swap = !future;
            const baseId = this.safeString (market, 'baseCurrency');
            const quoteId = this.safeString (market, 'quoteCurrency');
            const settleId = this.safeString (market, 'settleCurrency');
            const base = this.safeCurrencyCode (baseId);
            const quote = this.safeCurrencyCode (quoteId);
            const settle = this.safeCurrencyCode (settleId);
            let symbol = base + '/' + quote + ':' + settle;
            let type = 'swap';
            if (future) {
                symbol = symbol + '-' + this.yymmdd (expiry, '');
                type = 'future';
            }
            const baseMinSizeString = this.safeString (market, 'baseMinSize');
            const quoteMaxSizeString = this.safeString (market, 'quoteMaxSize');
            const inverse = this.safeValue (market, 'isInverse');
            const status = this.safeString (market, 'status');
            const multiplier = this.safeString (market, 'multiplier');
            result.push ({
                'id': id,
                'symbol': symbol,
                'base': base,
                'quote': quote,
                'settle': settle,
                'baseId': baseId,
                'quoteId': quoteId,
                'settleId': settleId,
                'type': type,
                'spot': false,
                'margin': false,
                'swap': swap,
                'future': future,
                'option': false,
                'active': (status === 'Open'),
                'contract': true,
                'linear': !inverse,
                'inverse': inverse,
                'taker': this.safeNumber (market, 'takerFeeRate'),
                'maker': this.safeNumber (market, 'makerFeeRate'),
                'contractSize': this.parseNumber (Precise.stringAbs (multiplier)),
                'expiry': expiry,
                'expiryDatetime': this.iso8601 (expiry),
                'strike': undefined,
                'optionType': undefined,
                'precision': {
                    'amount': this.safeNumber (market, 'lotSize'),
                    'price': this.safeNumber (market, 'tickSize'),
                },
                'limits': {
                    'leverage': {
                        'min': this.parseNumber ('1'),
                        'max': this.safeNumber (market, 'maxLeverage'),
                    },
                    'amount': {
                        'min': this.parseNumber (baseMinSizeString),
                        'max': this.safeNumber (market, 'baseMaxSize'),
                    },
                    'price': {
                        'min': undefined,
                        'max': this.parseNumber (Precise.stringDiv (quoteMaxSizeString, baseMinSizeString)),
                    },
                    'cost': {
                        'min': this.safeNumber (market, 'quoteMinSize'),
                        'max': this.parseNumber (quoteMaxSizeString),
                    },
                },
                'info': market,
            });
        }
        return result;
    }

    async fetchTime (params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchTime
         * @description fetches the current integer timestamp in milliseconds from the exchange server
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {int} the current integer timestamp in milliseconds from the exchange server
         */
        const response = await this.futuresPublicGetTimestamp (params);
        //
        //    {
        //        code: "200000",
        //        data: 1637385119302,
        //    }
        //
        return this.safeNumber (response, 'data');
    }

    async fetchOHLCV (symbol, timeframe = '15m', since = undefined, limit = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchOHLCV
         * @description fetches historical candlestick data containing the open, high, low, and close price, and the volume of a market
         * @param {str} symbol unified symbol of the market to fetch OHLCV data for
         * @param {str} timeframe the length of time each candle represents
         * @param {int|undefined} since timestamp in ms of the earliest candle to fetch
         * @param {int|undefined} limit the maximum amount of candles to fetch
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {[[int]]} A list of candles ordered as timestamp, open, high, low, close, volume
         */
        await this.loadMarkets ();
        const market = this.market (symbol);
        const marketId = market['id'];
        const request = {
            'symbol': marketId,
            'granularity': this.timeframes[timeframe],
        };
        const duration = this.parseTimeframe (timeframe) * 1000;
        let endAt = this.milliseconds ();
        if (since !== undefined) {
            request['from'] = since;
            if (limit === undefined) {
                limit = this.safeInteger (this.options, 'fetchOHLCVLimit', 200);
            }
            endAt = this.sum (since, limit * duration);
        } else if (limit !== undefined) {
            since = endAt - limit * duration;
            request['from'] = since;
        }
        request['to'] = endAt;
        const response = await this.futuresPublicGetKlineQuery (this.extend (request, params));
        //
        //    {
        //        "code": "200000",
        //        "data": [
        //            [1636459200000, 4779.3, 4792.1, 4768.7, 4770.3, 78051],
        //            [1636460100000, 4770.25, 4778.55, 4757.55, 4777.25, 80164],
        //            [1636461000000, 4777.25, 4791.45, 4774.5, 4791.3, 51555]
        //        ]
        //    }
        //
        const data = this.safeValue (response, 'data', []);
        return this.parseOHLCVs (data, market, timeframe, since, limit);
    }

    parseOHLCV (ohlcv, market = undefined) {
        //
        //    [
        //        "1545904980000",          // Start time of the candle cycle
        //        "0.058",                  // opening price
        //        "0.049",                  // closing price
        //        "0.058",                  // highest price
        //        "0.049",                  // lowest price
        //        "0.018",                  // base volume
        //        "0.000945",               // quote volume
        //    ]
        //
        return [
            this.safeInteger (ohlcv, 0),
            this.safeNumber (ohlcv, 1),
            this.safeNumber (ohlcv, 2),
            this.safeNumber (ohlcv, 3),
            this.safeNumber (ohlcv, 4),
            this.safeNumber (ohlcv, 5),
        ];
    }

    async createDepositAddress (code, params = {}) {
        /**
         * @method
         * @name kucoinfutures#createDepositAddress
         * @description create a currency deposit address
         * @param {str} code unified currency code of the currency for the deposit address
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} an [address structure]{@link https://docs.ccxt.com/en/latest/manual.html#address-structure}
         */
        throw new BadRequest (this.id + ' createDepositAddress() is not supported yet');
    }

    async fetchDepositAddress (code, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchDepositAddress
         * @description fetch the deposit address for a currency associated with this account
         * @param {str} code unified currency code
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} an [address structure]{@link https://docs.ccxt.com/en/latest/manual.html#address-structure}
         */
        await this.loadMarkets ();
        const currency = this.currency (code);
        const currencyId = currency['id'];
        const request = {
            'currency': currencyId, // Currency,including XBT,USDT
        };
        const response = await this.futuresPrivateGetDepositAddress (this.extend (request, params));
        //
        //    {
        //        "code": "200000",
        //        "data": {
        //            "address": "0x78d3ad1c0aa1bf068e19c94a2d7b16c9c0fcd8b1",//Deposit address
        //            "memo": null//Address tag. If the returned value is null, it means that the requested token has no memo. If you are to transfer funds from another platform to KuCoin Futures and if the token to be //transferred has memo(tag), you need to fill in the memo to ensure the transferred funds will be sent //to the address you specified.
        //        }
        //    }
        //
        const data = this.safeValue (response, 'data', {});
        const address = this.safeString (data, 'address');
        if (currencyId !== 'NIM') {
            // contains spaces
            this.checkAddress (address);
        }
        return {
            'info': response,
            'currency': currencyId,
            'address': address,
            'tag': this.safeString (data, 'memo'),
            'network': this.safeString (data, 'chain'),
        };
    }

    async fetchOrderBook (symbol, limit = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchOrderBook
         * @description fetches information on open orders with bid (buy) and ask (sell) prices, volumes and other data
         * @param {str} 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 {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} 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 level = this.safeNumber (params, 'level');
        if (level !== 2 && level !== undefined) {
            throw new BadRequest (this.id + ' fetchOrderBook() can only return level 2');
        }
        const market = this.market (symbol);
        const request = {
            'symbol': market['id'],
        };
        if (limit !== undefined) {
            if ((limit === 20) || (limit === 100)) {
                request['limit'] = limit;
            } else {
                throw new BadRequest (this.id + ' fetchOrderBook() limit argument must be 20 or 100');
            }
        } else {
            request['limit'] = 20;
        }
        const response = await this.futuresPublicGetLevel2DepthLimit (this.extend (request, params));
        //
        //     {
        //         "code": "200000",
        //         "data": {
        //           "symbol": "XBTUSDM",      //Symbol
        //           "sequence": 100,          //Ticker sequence number
        //           "asks": [
        //                 ["5000.0", 1000],   //Price, quantity
        //                 ["6000.0", 1983]    //Price, quantity
        //           ],
        //           "bids": [
        //                 ["3200.0", 800],    //Price, quantity
        //                 ["3100.0", 100]     //Price, quantity
        //           ],
        //           "ts": 1604643655040584408  // timestamp
        //         }
        //     }
        //
        const data = this.safeValue (response, 'data', {});
        const timestamp = parseInt (this.safeInteger (data, 'ts') / 1000000);
        const orderbook = this.parseOrderBook (data, market['symbol'], timestamp, 'bids', 'asks', 0, 1);
        orderbook['nonce'] = this.safeInteger (data, 'sequence');
        return orderbook;
    }

    async fetchL3OrderBook (symbol, limit = undefined, params = {}) {
        throw new BadRequest (this.id + ' fetchL3OrderBook() is not supported yet');
    }

    async fetchTicker (symbol, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchTicker
         * @description fetches a price ticker, a statistical calculation with the information calculated over the past 24 hours for a specific market
         * @param {str} symbol unified symbol of the market to fetch the ticker for
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} a [ticker structure]{@link https://docs.ccxt.com/en/latest/manual.html#ticker-structure}
         */
        await this.loadMarkets ();
        const market = this.market (symbol);
        const request = {
            'symbol': market['id'],
        };
        const response = await this.futuresPublicGetTicker (this.extend (request, params));
        //
        //    {
        //        "code": "200000",
        //        "data": {
        //            "sequence": 1638444978558,
        //            "symbol": "ETHUSDTM",
        //            "side": "sell",
        //            "size": 4,
        //            "price": "4229.35",
        //            "bestBidSize": 2160,
        //            "bestBidPrice": "4229.0",
        //            "bestAskPrice": "4229.05",
        //            "tradeId": "61aaa8b777a0c43055fe4851",
        //            "ts": 1638574296209786785,
        //            "bestAskSize": 36,
        //        }
        //    }
        //
        return this.parseTicker (response['data'], market);
    }

    parseTicker (ticker, market = undefined) {
        //
        //     {
        //         "code": "200000",
        //         "data": {
        //             "sequence":  1629930362547,
        //             "symbol": "ETHUSDTM",
        //             "side": "buy",
        //             "size":  130,
        //             "price": "4724.7",
        //             "bestBidSize":  5,
        //             "bestBidPrice": "4724.6",
        //             "bestAskPrice": "4724.65",
        //             "tradeId": "618d2a5a77a0c4431d2335f4",
        //             "ts":  1636641371963227600,
        //             "bestAskSize":  1789
        //          }
        //     }
        //
        const last = this.safeString (ticker, 'price');
        const marketId = this.safeString (ticker, 'symbol');
        market = this.safeMarket (marketId, market, '-');
        const timestamp = this.safeIntegerProduct (ticker, 'ts', 0.000001);
        return this.safeTicker ({
            'symbol': market['symbol'],
            'timestamp': timestamp,
            'datetime': this.iso8601 (timestamp),
            'high': undefined,
            'low': undefined,
            'bid': this.safeString (ticker, 'bestBidPrice'),
            'bidVolume': this.safeString (ticker, 'bestBidSize'),
            'ask': this.safeString (ticker, 'bestAskPrice'),
            'askVolume': this.safeString (ticker, 'bestAskSize'),
            'vwap': undefined,
            'open': undefined,
            'close': last,
            'last': last,
            'previousClose': undefined,
            'change': undefined,
            'percentage': undefined,
            'average': undefined,
            'baseVolume': undefined,
            'quoteVolume': undefined,
            'info': ticker,
        }, market);
    }

    async fetchFundingHistory (symbol = undefined, since = undefined, limit = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchFundingHistory
         * @description fetch the history of funding payments paid and received on this account
         * @param {str} symbol unified market symbol
         * @param {int|undefined} since the earliest time in ms to fetch funding history for
         * @param {int|undefined} limit the maximum number of funding history structures to retrieve
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} a [funding history structure]{@link https://docs.ccxt.com/en/latest/manual.html#funding-history-structure}
         */
        //
        if (symbol === undefined) {
            throw new ArgumentsRequired (this.id + ' fetchFundingHistory() requires a symbol argument');
        }
        await this.loadMarkets ();
        const market = this.market (symbol);
        const request = {
            'symbol': market['id'],
        };
        if (since !== undefined) {
            request['startAt'] = since;
        }
        if (limit !== undefined) {
            // * Since is ignored if limit is defined
            request['maxCount'] = limit;
        }
        const response = await this.futuresPrivateGetFundingHistory (this.extend (request, params));
        //
        //    {
        //        "code": "200000",
        //        "data": {
        //            "dataList": [
        //                {
        //                    "id": 239471298749817,
        //                    "symbol": "ETHUSDTM",
        //                    "timePoint": 1638532800000,
        //                    "fundingRate": 0.000100,
        //                    "markPrice": 4612.8300000000,
        //                    "positionQty": 12,
        //                    "positionCost": 553.5396000000,
        //                    "funding": -0.0553539600,
        //                    "settleCurrency": "USDT"
        //                },
        //                ...
        //            ],
        //            "hasMore": true
        //        }
        //    }
        //
        const data = this.safeValue (response, 'data');
        const dataList = this.safeValue (data, 'dataList', []);
        const fees = [];
        for (let i = 0; i < dataList.length; i++) {
            const listItem = dataList[i];
            const timestamp = this.safeInteger (listItem, 'timePoint');
            fees.push ({
                'info': listItem,
                'symbol': symbol,
                'code': this.safeCurrencyCode (this.safeString (listItem, 'settleCurrency')),
                'timestamp': timestamp,
                'datetime': this.iso8601 (timestamp),
                'id': this.safeNumber (listItem, 'id'),
                'amount': this.safeNumber (listItem, 'funding'),
                'fundingRate': this.safeNumber (listItem, 'fundingRate'),
                'markPrice': this.safeNumber (listItem, 'markPrice'),
                'positionQty': this.safeNumber (listItem, 'positionQty'),
                'positionCost': this.safeNumber (listItem, 'positionCost'),
            });
        }
        return fees;
    }

    async fetchPositions (symbols = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchPositions
         * @description fetch all open positions
         * @param {[str]|undefined} symbols list of unified market symbols
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {[dict]} a list of [position structure]{@link https://docs.ccxt.com/en/latest/manual.html#position-structure}
         */
        await this.loadMarkets ();
        const response = await this.futuresPrivateGetPositions (params);
        //
        //    {
        //        "code": "200000",
        //        "data": [
        //            {
        //                "id": "615ba79f83a3410001cde321",
        //                "symbol": "ETHUSDTM",
        //                "autoDeposit": false,
        //                "maintMarginReq": 0.005,
        //                "riskLimit": 1000000,
        //                "realLeverage": 18.61,
        //                "crossMode": false,
        //                "delevPercentage": 0.86,
        //                "openingTimestamp": 1638563515618,
        //                "currentTimestamp": 1638576872774,
        //                "currentQty": 2,
        //                "currentCost": 83.64200000,
        //                "currentComm": 0.05018520,
        //                "unrealisedCost": 83.64200000,
        //                "realisedGrossCost": 0.00000000,
        //                "realisedCost": 0.05018520,
        //                "isOpen": true,
        //                "markPrice": 4225.01,
        //                "markValue": 84.50020000,
        //                "posCost": 83.64200000,
        //                "posCross": 0.0000000000,
        //                "posInit": 3.63660870,
        //                "posComm": 0.05236717,
        //                "posLoss": 0.00000000,
        //                "posMargin": 3.68897586,
        //                "posMaint": 0.50637594,
        //                "maintMargin": 4.54717586,
        //                "realisedGrossPnl": 0.00000000,
        //                "realisedPnl": -0.05018520,
        //                "unrealisedPnl": 0.85820000,
        //                "unrealisedPnlPcnt": 0.0103,
        //                "unrealisedRoePcnt": 0.2360,
        //                "avgEntryPrice": 4182.10,
        //                "liquidationPrice": 4023.00,
        //                "bankruptPrice": 4000.25,
        //                "settleCurrency": "USDT",
        //                "isInverse": false
        //            }
        //        ]
        //    }
        //
        const data = this.safeValue (response, 'data');
        return this.parsePositions (data, symbols);
    }

    parsePosition (position, market = undefined) {
        //
        //    {
        //        "code": "200000",
        //        "data": [
        //            {
        //                "id": "615ba79f83a3410001cde321",         // Position ID
        //                "symbol": "ETHUSDTM",                     // Symbol
        //                "autoDeposit": false,                     // Auto deposit margin or not
        //                "maintMarginReq": 0.005,                  // Maintenance margin requirement
        //                "riskLimit": 1000000,                     // Risk limit
        //                "realLeverage": 25.92,                    // Leverage of the order
        //                "crossMode": false,                       // Cross mode or not
        //                "delevPercentage": 0.76,                  // ADL ranking percentile
        //                "openingTimestamp": 1638578546031,        // Open time
        //                "currentTimestamp": 1638578563580,        // Current timestamp
        //                "currentQty": 2,                          // Current postion quantity
        //                "currentCost": 83.787,                    // Current postion value
        //                "currentComm": 0.0167574,                 // Current commission
        //                "unrealisedCost": 83.787,                 // Unrealised value
        //                "realisedGrossCost": 0.0,                 // Accumulated realised gross profit value
        //                "realisedCost": 0.0167574,                // Current realised position value
        //                "isOpen": true,                           // Opened position or not
        //                "markPrice": 4183.38,                     // Mark price
        //                "markValue": 83.6676,                     // Mark value
        //                "posCost": 83.787,                        // Position value
        //                "posCross": 0.0,                          // added margin
        //                "posInit": 3.35148,                       // Leverage margin
        //                "posComm": 0.05228309,                    // Bankruptcy cost
        //                "posLoss": 0.0,                           // Funding fees paid out
        //                "posMargin": 3.40376309,                  // Position margin
        //                "posMaint": 0.50707892,                   // Maintenance margin
        //                "maintMargin": 3.28436309,                // Position margin
        //                "realisedGrossPnl": 0.0,                  // Accumulated realised gross profit value
        //                "realisedPnl": -0.0167574,                // Realised profit and loss
        //                "unrealisedPnl": -0.1194,                 // Unrealised profit and loss
        //                "unrealisedPnlPcnt": -0.0014,             // Profit-loss ratio of the position
        //                "unrealisedRoePcnt": -0.0356,             // Rate of return on investment
        //                "avgEntryPrice": 4189.35,                 // Average entry price
        //                "liquidationPrice": 4044.55,              // Liquidation price
        //                "bankruptPrice": 4021.75,                 // Bankruptcy price
        //                "settleCurrency": "USDT",                 // Currency used to clear and settle the trades
        //                "isInverse": false
        //            }
        //        ]
        //    }
        //
        const symbol = this.safeString (position, 'symbol');
        market = this.safeMarket (symbol, market);
        const timestamp = this.safeNumber (position, 'currentTimestamp');
        const size = this.safeString (position, 'currentQty');
        let side = undefined;
        if (Precise.stringGt (size, '0')) {
            side = 'long';
        } else if (Precise.stringLt (size, '0')) {
            side = 'short';
        }
        const notional = Precise.stringAbs (this.safeString (position, 'posCost'));
        const initialMargin = this.safeString (position, 'posInit');
        const initialMarginPercentage = Precise.stringDiv (initialMargin, notional);
        // const marginRatio = Precise.stringDiv (maintenanceRate, collateral);
        const unrealisedPnl = this.safeString (position, 'unrealisedPnl');
        const crossMode = this.safeValue (position, 'crossMode');
        // currently crossMode is always set to false and only isolated positions are supported
        const marginMode = crossMode ? 'cross' : 'isolated';
        return {
            'info': position,
            'symbol': this.safeString (market, 'symbol'),
            'timestamp': timestamp,
            'datetime': this.iso8601 (timestamp),
            'initialMargin': this.parseNumber (initialMargin),
            'initialMarginPercentage': this.parseNumber (initialMarginPercentage),
            'maintenanceMargin': this.safeNumber (position, 'posMaint'),
            'maintenanceMarginPercentage': this.safeNumber (position, 'maintMarginReq'),
            'entryPrice': this.safeNumber (position, 'avgEntryPrice'),
            'notional': this.parseNumber (notional),
            'leverage': this.safeNumber (position, 'realLeverage'),
            'unrealizedPnl': this.parseNumber (unrealisedPnl),
            'contracts': this.parseNumber (Precise.stringAbs (size)),
            'contractSize': this.safeValue (market, 'contractSize'),
            //     realisedPnl: position['realised_pnl'],
            'marginRatio': undefined,
            'liquidationPrice': this.safeNumber (position, 'liquidationPrice'),
            'markPrice': this.safeNumber (position, 'markPrice'),
            'collateral': this.safeNumber (position, 'maintMargin'),
            'marginMode': marginMode,
            'side': side,
            'percentage': this.parseNumber (Precise.stringDiv (unrealisedPnl, initialMargin)),
        };
    }

    async createOrder (symbol, type, side, amount, price = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#createOrder
         * @description Create an order on the exchange
         * @param {str} symbol Unified CCXT market symbol
         * @param {str} type 'limit' or 'market'
         * @param {str} side 'buy' or 'sell'
         * @param {float} amount the amount of currency to trade
         * @param {float} price *ignored in "market" orders* the price at which the order is to be fullfilled at in units of the quote currency
         * @param {dict} params  Extra parameters specific to the exchange API endpoint
         * @param {float} params.leverage Leverage size of the order
         * @param {float} params.stopPrice The price at which a trigger order is triggered at
         * @param {bool} params.reduceOnly A mark to reduce the position size only. Set to false by default. Need to set the position size when reduceOnly is true.
         * @param {str} params.timeInForce GTC, GTT, IOC, or FOK, default is GTC, limit orders only
         * @param {str} params.postOnly Post only flag, invalid when timeInForce is IOC or FOK
         * @param {str} params.clientOid client order id, defaults to uuid if not passed
         * @param {str} params.remark remark for the order, length cannot exceed 100 utf8 characters
         * @param {str} params.stop 'up' or 'down', defaults to 'up' if side is sell and 'down' if side is buy, requires stopPrice
         * @param {str} params.stopPriceType  TP, IP or MP, defaults to TP
         * @param {bool} params.closeOrder set to true to close position
         * @param {bool} params.forceHold A mark to forcely hold the funds for an order, even though it's an order to reduce the position size. This helps the order stay on the order book and not get canceled when the position size changes. Set to false by default.
         * @returns {dict} an [order structure]{@link https://docs.ccxt.com/en/latest/manual.html#order-structure}
         */
        await this.loadMarkets ();
        const market = this.market (symbol);
        // required param, cannot be used twice
        const clientOrderId = this.safeString2 (params, 'clientOid', 'clientOrderId', this.uuid ());
        params = this.omit (params, [ 'clientOid', 'clientOrderId' ]);
        if (amount < 1) {
            throw new InvalidOrder (this.id + ' createOrder() minimum contract order amount is 1');
        }
        const preciseAmount = parseInt (this.amountToPrecision (symbol, amount));
        const request = {
            'clientOid': clientOrderId,
            'side': side,
            'symbol': market['id'],
            'type': type, // limit or market
            'size': preciseAmount,
            'leverage': 1,
        };
        const stopPrice = this.safeNumber (params, 'stopPrice');
        if (stopPrice) {
            request['stop'] = (side === 'buy') ? 'up' : 'down';
            const stopPriceType = this.safeString (params, 'stopPriceType', 'TP');
            request['stopPriceType'] = stopPriceType;
        }
        const uppercaseType = type.toUpperCase ();
        let timeInForce = this.safeString (params, 'timeInForce');
        if (uppercaseType === 'LIMIT') {
            if (price === undefined) {
                throw new ArgumentsRequired (this.id + ' createOrder() requires a price argument for limit orders');
            } else {
                request['price'] = this.priceToPrecision (symbol, price);
            }
            if (timeInForce !== undefined) {
                timeInForce = timeInForce.toUpperCase ();
                request['timeInForce'] = timeInForce;
            }
        }
        const postOnly = this.safeValue (params, 'postOnly', false);
        const hidden = this.safeValue (params, 'hidden');
        if (postOnly && hidden !== undefined) {
            throw new BadRequest (this.id + ' createOrder() does not support the postOnly parameter together with a hidden parameter');
        }
        const iceberg = this.safeValue (params, 'iceberg');
        if (iceberg) {
            const visibleSize = this.safeValue (params, 'visibleSize');
            if (visibleSize === undefined) {
                throw new ArgumentsRequired (this.id + ' createOrder() requires a visibleSize parameter for iceberg orders');
            }
        }
        params = this.omit (params, 'timeInForce'); // Time in force only valid for limit orders, exchange error when gtc for market orders
        const response = await this.futuresPrivatePostOrders (this.extend (request, params));
        //
        //    {
        //        code: "200000",
        //        data: {
        //            orderId: "619717484f1d010001510cde",
        //        },
        //    }
        //
        const data = this.safeValue (response, 'data', {});
        return {
            'id': this.safeString (data, 'orderId'),
            'clientOrderId': undefined,
            'timestamp': undefined,
            'datetime': undefined,
            'lastTradeTimestamp': undefined,
            'symbol': undefined,
            'type': undefined,
            'side': undefined,
            'price': undefined,
            'amount': undefined,
            'cost': undefined,
            'average': undefined,
            'filled': undefined,
            'remaining': undefined,
            'status': undefined,
            'fee': undefined,
            'trades': undefined,
            'timeInForce': undefined,
            'postOnly': undefined,
            'stopPrice': undefined,
            'info': response,
        };
    }

    async cancelOrder (id, symbol = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#cancelOrder
         * @description cancels an open order
         * @param {str} id order id
         * @param {str|undefined} symbol unified symbol of the market the order was made in
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} An [order structure]{@link https://docs.ccxt.com/en/latest/manual.html#order-structure}
         */
        await this.loadMarkets ();
        const request = {
            'orderId': id,
        };
        const response = await this.futuresPrivateDeleteOrdersOrderId (this.extend (request, params));
        //
        //   {
        //       code: "200000",
        //       data: {
        //           cancelledOrderIds: [
        //                "619714b8b6353000014c505a",
        //           ],
        //       },
        //   }
        //
        return this.safeValue (response, 'data');
    }

    async cancelAllOrders (symbol = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#cancelAllOrders
         * @description cancel all open orders
         * @param {str|undefined} symbol unified market symbol, only orders in the market of this symbol are cancelled when symbol is not undefined
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @param {dict} params.stop When true, all the trigger orders will be cancelled
         * @returns Response from the exchange
         */
        await this.loadMarkets ();
        const request = {};
        if (symbol !== undefined) {
            request['symbol'] = this.marketId (symbol);
        }
        const stop = this.safeValue (params, 'stop');
        const method = stop ? 'futuresPrivateDeleteStopOrders' : 'futuresPrivateDeleteOrders';
        const response = await this[method] (this.extend (request, params));
        //
        //   {
        //       code: "200000",
        //       data: {
        //           cancelledOrderIds: [
        //                "619714b8b6353000014c505a",
        //           ],
        //       },
        //   }
        //
        return this.safeValue (response, 'data');
    }

    async addMargin (symbol, amount, params = {}) {
        /**
         * @method
         * @name kucoinfutures#addMargin
         * @description add margin
         * @param {str} symbol unified market symbol
         * @param {float} amount amount of margin to add
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} a [margin structure]{@link https://docs.ccxt.com/en/latest/manual.html#add-margin-structure}
         */
        await this.loadMarkets ();
        const market = this.market (symbol);
        const uuid = this.uuid ();
        const request = {
            'symbol': market['id'],
            'margin': this.amountToPrecision (symbol, amount),
            'bizNo': uuid,
        };
        const response = await this.futuresPrivatePostPositionMarginDepositMargin (this.extend (request, params));
        //
        //    {
        //        code: '200000',
        //        data: {
        //            id: '62311d26064e8f00013f2c6d',
        //            symbol: 'XRPUSDTM',
        //            autoDeposit: false,
        //            maintMarginReq: 0.01,
        //            riskLimit: 200000,
        //            realLeverage: 0.88,
        //            crossMode: false,
        //            delevPercentage: 0.4,
        //            openingTimestamp: 1647385894798,
        //            currentTimestamp: 1647414510672,
        //            currentQty: -1,
        //            currentCost: -7.658,
        //            currentComm: 0.0053561,
        //            unrealisedCost: -7.658,
        //            realisedGrossCost: 0,
        //            realisedCost: 0.0053561,
        //            isOpen: true,
        //            markPrice: 0.7635,
        //            markValue: -7.635,
        //            posCost: -7.658,
        //            posCross: 1.00016084,
        //            posInit: 7.658,
        //            posComm: 0.00979006,
        //            posLoss: 0,
        //            posMargin: 8.6679509,
        //            posMaint: 0.08637006,
        //            maintMargin: 8.6909509,
        //            realisedGrossPnl: 0,
        //            realisedPnl: -0.0038335,
        //            unrealisedPnl: 0.023,
        //            unrealisedPnlPcnt: 0.003,
        //            unrealisedRoePcnt: 0.003,
        //            avgEntryPrice: 0.7658,
        //            liquidationPrice: 1.6239,
        //            bankruptPrice: 1.6317,
        //            settleCurrency: 'USDT'
        //        }
        //    }
        //
        //
        //    {
        //        "code":"200000",
        //        "msg":"Position does not exist"
        //    }
        //
        const data = this.safeValue (response, 'data');
        return this.extend (this.parseModifyMargin (data, market), {
            'amount': this.amountToPrecision (symbol, amount),
            'direction': 'in',
        });
    }

    parseMarginModification (info, market = undefined) {
        //
        //    {
        //        id: '62311d26064e8f00013f2c6d',
        //        symbol: 'XRPUSDTM',
        //        autoDeposit: false,
        //        maintMarginReq: 0.01,
        //        riskLimit: 200000,
        //        realLeverage: 0.88,
        //        crossMode: false,
        //        delevPercentage: 0.4,
        //        openingTimestamp: 1647385894798,
        //        currentTimestamp: 1647414510672,
        //        currentQty: -1,
        //        currentCost: -7.658,
        //        currentComm: 0.0053561,
        //        unrealisedCost: -7.658,
        //        realisedGrossCost: 0,
        //        realisedCost: 0.0053561,
        //        isOpen: true,
        //        markPrice: 0.7635,
        //        markValue: -7.635,
        //        posCost: -7.658,
        //        posCross: 1.00016084,
        //        posInit: 7.658,
        //        posComm: 0.00979006,
        //        posLoss: 0,
        //        posMargin: 8.6679509,
        //        posMaint: 0.08637006,
        //        maintMargin: 8.6909509,
        //        realisedGrossPnl: 0,
        //        realisedPnl: -0.0038335,
        //        unrealisedPnl: 0.023,
        //        unrealisedPnlPcnt: 0.003,
        //        unrealisedRoePcnt: 0.003,
        //        avgEntryPrice: 0.7658,
        //        liquidationPrice: 1.6239,
        //        bankruptPrice: 1.6317,
        //        settleCurrency: 'USDT'
        //    }
        //
        //    {
        //        "code":"200000",
        //        "msg":"Position does not exist"
        //    }
        //
        const id = this.safeString (info, 'id');
        market = this.safeMarket (id, market);
        const currencyId = this.safeString (info, 'settleCurrency');
        const crossMode = this.safeValue (info, 'crossMode');
        const mode = crossMode ? 'cross' : 'isolated';
        const marketId = this.safeString (market, 'symbol');
        return {
            'info': info,
            'direction': undefined,
            'mode': mode,
            'amount': undefined,
            'code': this.safeCurrencyCode (currencyId),
            'symbol': this.safeSymbol (marketId, market),
            'status': undefined,
        };
    }

    async fetchOrdersByStatus (status, symbol = undefined, since = undefined, limit = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchOrdersByStatus
         * @description fetches a list of orders placed on the exchange
         * @param {str} status 'active' or 'closed', only 'active' is valid for stop orders
         * @param {str|undefined} symbol unified symbol for the market to retrieve orders from
         * @param {int|undefined} since timestamp in ms of the earliest order to retrieve
         * @param {int|undefined} limit The maximum number of orders to retrieve
         * @param {dict} params exchange specific parameters
         * @param {bool|undefined} params.stop set to true to retrieve untriggered stop orders
         * @param {int|undefined} params.until End time in ms
         * @param {str|undefined} params.side buy or sell
         * @param {str|undefined} params.type limit or market
         * @returns An [array of order structures]{@link https://docs.ccxt.com/en/latest/manual.html#order-structure}
         */
        await this.loadMarkets ();
        const stop = this.safeValue (params, 'stop');
        const until = this.safeInteger2 (params, 'until', 'till');
        params = this.omit (params, [ 'stop', 'until', 'till' ]);
        if (status === 'closed') {
            status = 'done';
        } else if (status === 'open') {
            status = 'active';
        }
        const request = {};
        if (!stop) {
            request['status'] = status;
        } else if (status !== 'active') {
            throw new BadRequest (this.id + ' fetchOrdersByStatus() can only fetch untriggered stop orders');
        }
        let market = undefined;
        if (symbol !== undefined) {
            market = this.market (symbol);
            request['symbol'] = market['id'];
        }
        if (since !== undefined) {
            request['startAt'] = since;
        }
        if (until !== undefined) {
            request['endAt'] = until;
        }
        const method = stop ? 'futuresPrivateGetStopOrders' : 'futuresPrivateGetOrders';
        const response = await this[method] (this.extend (request, params));
        const responseData = this.safeValue (response, 'data', {});
        const orders = this.safeValue (responseData, 'items', []);
        return this.parseOrders (orders, market, since, limit);
    }

    async fetchClosedOrders (symbol = undefined, since = undefined, limit = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchClosedOrders
         * @description fetches information on multiple closed orders made by the user
         * @param {str|undefined} symbol unified market symbol of the market orders were made in
         * @param {int|undefined} since the earliest time in ms to fetch orders for
         * @param {int|undefined} limit the maximum number of  orde structures to retrieve
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @param {int|undefined} params.till end time in ms
         * @param {str|undefined} params.side buy or sell
         * @param {str|undefined} params.type limit, or market
         * @returns {[dict]} a list of [order structures]{@link https://docs.ccxt.com/en/latest/manual.html#order-structure
         */
        return await this.fetchOrdersByStatus ('done', symbol, since, limit, params);
    }

    async fetchOrder (id = undefined, symbol = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchOrder
         * @description fetches information on an order made by the user
         * @param {str|undefined} symbol unified symbol of the market the order was made in
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} An [order structure]{@link https://docs.ccxt.com/en/latest/manual.html#order-structure}
         */
        await this.loadMarkets ();
        const request = {};
        let method = 'futuresPrivateGetOrdersOrderId';
        if (id === undefined) {
            const clientOrderId = this.safeString2 (params, 'clientOid', 'clientOrderId');
            if (clientOrderId === undefined) {
                throw new InvalidOrder (this.id + ' fetchOrder() requires parameter id or params.clientOid');
            }
            request['clientOid'] = clientOrderId;
            method = 'futuresPrivateGetOrdersByClientOid';
            params = this.omit (params, [ 'clientOid', 'clientOrderId' ]);
        } else {
            request['orderId'] = id;
        }
        const response = await this[method] (this.extend (request, params));
        const market = (symbol !== undefined) ? this.market (symbol) : undefined;
        const responseData = this.safeValue (response, 'data');
        return this.parseOrder (responseData, market);
    }

    parseOrder (order, market = undefined) {
        const marketId = this.safeString (order, 'symbol');
        market = this.safeMarket (marketId, market);
        const symbol = market['symbol'];
        const orderId = this.safeString (order, 'id');
        const type = this.safeString (order, 'type');
        const timestamp = this.safeInteger (order, 'createdAt');
        const datetime = this.iso8601 (timestamp);
        const price = this.safeString (order, 'price');
        // price is zero for market order
        // omitZero is called in safeOrder2
        const side = this.safeString (order, 'side');
        const feeCurrencyId = this.safeString (order, 'feeCurrency');
        const feeCurrency = this.safeCurrencyCode (feeCurrencyId);
        const feeCost = this.safeNumber (order, 'fee');
        const amount = this.safeString (order, 'size');
        const filled = this.safeString (order, 'dealSize');
        const rawCost = this.safeString2 (order, 'dealFunds', 'filledValue');
        const leverage = this.safeString (order, 'leverage');
        const cost = Precise.stringDiv (rawCost, leverage);
        let average = undefined;
        if (Precise.stringGt (filled, '0')) {
            const contractSize = this.safeString (market, 'contractSize');
            if (market['linear']) {
                average = Precise.stringDiv (rawCost, Precise.stringMul (contractSize, filled));
            } else {
                average = Precise.stringDiv (Precise.stringMul (contractSize, filled), rawCost);
            }
        }
        // precision reported by their api is 8 d.p.
        // const average = Precise.stringDiv (rawCost, Precise.stringMul (filled, market['contractSize']));
        // bool
        const isActive = this.safeValue (order, 'isActive', false);
        const cancelExist = this.safeValue (order, 'cancelExist', false);
        let status = isActive ? 'open' : 'closed';
        status = cancelExist ? 'canceled' : status;
        const fee = {
            'currency': feeCurrency,
            'cost': feeCost,
        };
        const clientOrderId = this.safeString (order, 'clientOid');
        const timeInForce = this.safeString (order, 'timeInForce');
        const stopPrice = this.safeNumber (order, 'stopPrice');
        const postOnly = this.safeValue (order, 'postOnly');
        return this.safeOrder ({
            'id': orderId,
            'clientOrderId': clientOrderId,
            'symbol': symbol,
            'type': type,
            'timeInForce': timeInForce,
            'postOnly': postOnly,
            'side': side,
            'amount': amount,
            'price': price,
            'stopPrice': stopPrice,
            'cost': cost,
            'filled': filled,
            'remaining': undefined,
            'timestamp': timestamp,
            'datetime': datetime,
            'fee': fee,
            'status': status,
            'info': order,
            'lastTradeTimestamp': undefined,
            'average': average,
            'trades': undefined,
        }, market);
    }

    async fetchFundingRate (symbol, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchFundingRate
         * @description fetch the current funding rate
         * @param {str} symbol unified market symbol
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} a [funding rate structure]{@link https://docs.ccxt.com/en/latest/manual.html#funding-rate-structure}
         */
        await this.loadMarkets ();
        const market = this.market (symbol);
        const request = {
            'symbol': market['id'],
        };
        const response = await this.futuresPublicGetFundingRateSymbolCurrent (this.extend (request, params));
        //
        //    {
        //        code: "200000",
        //        data: {
        //            symbol: ".ETHUSDTMFPI8H",
        //            granularity: 28800000,
        //            timePoint: 1637380800000,
        //            value: 0.0001,
        //            predictedValue: 0.0001,
        //        },
        //    }
        //
        const data = this.safeValue (response, 'data');
        const fundingTimestamp = this.safeNumber (data, 'timePoint');
        return {
            'info': data,
            'symbol': market['symbol'],
            'markPrice': undefined,
            'indexPrice': undefined,
            'interestRate': undefined,
            'estimatedSettlePrice': undefined,
            'timestamp': undefined,
            'datetime': undefined,
            'fundingRate': this.safeNumber (data, 'value'),
            'fundingTimestamp': fundingTimestamp,
            'fundingDatetime': this.iso8601 (fundingTimestamp),
            'nextFundingRate': this.safeNumber (data, 'predictedValue'),
            'nextFundingTimestamp': undefined,
            'nextFundingDatetime': undefined,
            'previousFundingRate': undefined,
            'previousFundingTimestamp': undefined,
            'previousFundingDatetime': undefined,
        };
    }

    parseBalance (response) {
        const result = {
            'info': response,
            'timestamp': undefined,
            'datetime': undefined,
        };
        const data = this.safeValue (response, 'data');
        const currencyId = this.safeString (data, 'currency');
        const code = this.safeCurrencyCode (currencyId);
        const account = this.account ();
        account['free'] = this.safeString (data, 'availableBalance');
        account['total'] = this.safeString (data, 'accountEquity');
        result[code] = account;
        return this.safeBalance (result);
    }

    async fetchBalance (params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchBalance
         * @description query for balance and get the amount of funds available for trading or funds locked in orders
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} a [balance structure]{@link https://docs.ccxt.com/en/latest/manual.html?#balance-structure}
         */
        await this.loadMarkets ();
        // only fetches one balance at a time
        let defaultCode = this.safeString (this.options, 'code');
        const fetchBalanceOptions = this.safeValue (this.options, 'fetchBalance', {});
        defaultCode = this.safeString (fetchBalanceOptions, 'code', defaultCode);
        const code = this.safeString (params, 'code', defaultCode);
        const currency = this.currency (code);
        const request = {
            'currency': currency['id'],
        };
        const response = await this.futuresPrivateGetAccountOverview (this.extend (request, params));
        //
        //     {
        //         code: '200000',
        //         data: {
        //             accountEquity: 0.00005,
        //             unrealisedPNL: 0,
        //             marginBalance: 0.00005,
        //             positionMargin: 0,
        //             orderMargin: 0,
        //             frozenFunds: 0,
        //             availableBalance: 0.00005,
        //             currency: 'XBT'
        //         }
        //     }
        //
        return this.parseBalance (response);
    }

    async transfer (code, amount, fromAccount, toAccount, params = {}) {
        /**
         * @method
         * @name kucoinfutures#transfer
         * @description transfer currency internally between wallets on the same account
         * @param {str} code unified currency code
         * @param {float} amount amount to transfer
         * @param {str} fromAccount account to transfer from
         * @param {str} toAccount account to transfer to
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} a [transfer structure]{@link https://docs.ccxt.com/en/latest/manual.html#transfer-structure}
         */
        if ((toAccount !== 'main' && toAccount !== 'funding') || (fromAccount !== 'futures' && fromAccount !== 'future' && fromAccount !== 'contract')) {
            throw new BadRequest (this.id + ' transfer() only supports transfers from contract(future) account to main(funding) account');
        }
        await this.loadMarkets ();
        const currency = this.currency (code);
        const amountToPrecision = this.currencyToPrecision (code, amount);
        const request = {
            'currency': this.safeString (currency, 'id'), // Currency,including XBT,USDT
            'amount': amountToPrecision,
        };
        // transfer from usdm futures wallet to spot wallet
        const response = await this.futuresPrivatePostTransferOut (this.extend (request, params));
        //
        //    {
        //        "code": "200000",
        //        "data": {
        //            "applyId": "5bffb63303aa675e8bbe18f9" // Transfer-out request ID
        //        }
        //    }
        //
        const data = this.safeValue (response, 'data');
        return this.extend (this.parseTransfer (data, currency), {
            'amount': this.parseNumber (amountToPrecision),
            'fromAccount': 'future',
            'toAccount': 'spot',
        });
    }

    parseTransfer (transfer, currency = undefined) {
        //
        // transfer
        //
        //     {
        //            "applyId": "5bffb63303aa675e8bbe18f9" // Transfer-out request ID
        //     }
        //
        const timestamp = this.safeInteger (transfer, 'updatedAt');
        return {
            'id': this.safeString (transfer, 'applyId'),
            'timestamp': timestamp,
            'datetime': this.iso8601 (timestamp),
            'currency': this.safeCurrencyCode (undefined, currency),
            'amount': undefined,
            'fromAccount': undefined,
            'toAccount': undefined,
            'status': this.safeString (transfer, 'status'),
            'info': transfer,
        };
    }

    parseTransferStatus (status) {
        const statuses = {
            'PROCESSING': 'pending',
        };
        return this.safeString (statuses, status, status);
    }

    async fetchMyTrades (symbol = undefined, since = undefined, limit = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchMyTrades
         * @description fetch all trades made by the user
         * @param {str|undefined} 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 {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {[dict]} a list of [trade structures]{@link https://docs.ccxt.com/en/latest/manual.html#trade-structure}
         */
        await this.loadMarkets ();
        const request = {
            // orderId (String) [optional] Fills for a specific order (other parameters can be ignored if specified)
            // symbol (String) [optional] Symbol of the contract
            // side (String) [optional] buy or sell
            // type (String) [optional] limit, market, limit_stop or market_stop
            // startAt (long) [optional] Start time (milisecond)
            // endAt (long) [optional] End time (milisecond)
        };
        let market = undefined;
        if (symbol !== undefined) {
            market = this.market (symbol);
            request['symbol'] = market['id'];
        }
        if (since !== undefined) {
            request['startAt'] = since;
        }
        const response = await this.futuresPrivateGetFills (this.extend (request, params));
        //
        //    {
        //        "code": "200000",
        //        "data": {
        //          "currentPage": 1,
        //          "pageSize": 1,
        //          "totalNum": 251915,
        //          "totalPage": 251915,
        //          "items": [
        //              {
        //                  "symbol": "XBTUSDM",  // Ticker symbol of the contract
        //                  "tradeId": "5ce24c1f0c19fc3c58edc47c",  // Trade ID
        //                  "orderId": "5ce24c16b210233c36ee321d",  // Order ID
        //                  "side": "sell",  // Transaction side
        //                  "liquidity": "taker",  // Liquidity- taker or maker
        //                  "price": "8302",  // Filled price
        //                  "size": 10,  // Filled amount
        //                  "value": "0.001204529",  // Order value
        //                  "feeRate": "0.0005",  // Floating fees
        //                  "fixFee": "0.00000006",  // Fixed fees
        //                  "feeCurrency": "XBT",  // Charging currency
        //                  "stop": "",  // A mark to the stop order type
        //                  "fee": "0.0000012022",  // Transaction fee
        //                  "orderType": "limit",  // Order type
        //                  "tradeType": "trade",  // Trade type (trade, liquidation, ADL or settlement)
        //                  "createdAt": 1558334496000,  // Time the order created
        //                  "settleCurrency": "XBT", // settlement currency
        //                  "tradeTime": 1558334496000000000 // trade time in nanosecond
        //              }
        //            ]
        //        }
        //    }
        //
        const data = this.safeValue (response, 'data', {});
        const trades = this.safeValue (data, 'items', {});
        return this.parseTrades (trades, market, since, limit);
    }

    async fetchTrades (symbol, since = undefined, limit = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchTrades
         * @description get the list of most recent trades for a particular symbol
         * @param {str} 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 {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {[dict]} 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 = {
            'symbol': market['id'],
        };
        const response = await this.futuresPublicGetTradeHistory (this.extend (request, params));
        //
        //      {
        //          "code": "200000",
        //          "data": [
        //              {
        //                  "sequence": 32114961,
        //                  "side": "buy",
        //                  "size": 39,
        //                  "price": "4001.6500000000",
        //                  "takerOrderId": "61c20742f172110001e0ebe4",
        //                  "makerOrderId": "61c2073fcfc88100010fcb5d",
        //                  "tradeId": "61c2074277a0c473e69029b8",
        //                  "ts": 1640105794099993896   // filled time
        //              }
        //          ]
        //      }
        //
        const trades = this.safeValue (response, 'data', []);
        return this.parseTrades (trades, market, since, limit);
    }

    parseTrade (trade, market = undefined) {
        //
        // fetchTrades (public)
        //
        //     {
        //         "sequence": 32114961,
        //         "side": "buy",
        //         "size": 39,
        //         "price": "4001.6500000000",
        //         "takerOrderId": "61c20742f172110001e0ebe4",
        //         "makerOrderId": "61c2073fcfc88100010fcb5d",
        //         "tradeId": "61c2074277a0c473e69029b8",
        //         "ts": 1640105794099993896   // filled time
        //     }
        //
        // fetchMyTrades (private) v2
        //
        //     {
        //         "symbol":"BTC-USDT",
        //         "tradeId":"5c35c02709e4f67d5266954e",
        //         "orderId":"5c35c02703aa673ceec2a168",
        //         "counterOrderId":"5c1ab46003aa676e487fa8e3",
        //         "side":"buy",
        //         "liquidity":"taker",
        //         "forceTaker":true,
        //         "price":"0.083",
        //         "size":"0.8424304",
        //         "funds":"0.0699217232",
        //         "fee":"0",
        //         "feeRate":"0",
        //         "feeCurrency":"USDT",
        //         "stop":"",
        //         "type":"limit",
        //         "createdAt":1547026472000
        //     }
        //
        // fetchMyTrades (private) v1
        //
        //      {
        //          "symbol":"DOGEUSDTM",
        //          "tradeId":"620ec41a96bab27b5f4ced56",
        //          "orderId":"620ec41a0d1d8a0001560bd0",
        //          "side":"sell",
        //          "liquidity":"taker",
        //          "forceTaker":true,
        //          "price":"0.13969",
        //          "size":1,
        //          "value":"13.969",
        //          "feeRate":"0.0006",
        //          "fixFee":"0",
        //          "feeCurrency":"USDT",
        //          "stop":"",
        //          "tradeTime":1645134874858018058,
        //          "fee":"0.0083814",
        //          "settleCurrency":"USDT",
        //          "orderType":"market",
        //          "tradeType":"trade",
        //          "createdAt":1645134874858
        //      }
        //
        const marketId = this.safeString (trade, 'symbol');
        market = this.safeMarket (marketId, market, '-');
        const id = this.safeString2 (trade, 'tradeId', 'id');
        const orderId = this.safeString (trade, 'orderId');
        const takerOrMaker = this.safeString (trade, 'liquidity');
        let timestamp = this.safeInteger (trade, 'ts');
        if (timestamp !== undefined) {
            timestamp = parseInt (timestamp / 1000000);
        } else {
            timestamp = this.safeInteger (trade, 'createdAt');
            // if it's a historical v1 trade, the exchange returns timestamp in seconds
            if (('dealValue' in trade) && (timestamp !== undefined)) {
                timestamp = timestamp * 1000;
            }
        }
        const priceString = this.safeString2 (trade, 'price', 'dealPrice');
        const amountString = this.safeString2 (trade, 'size', 'amount');
        const side = this.safeString (trade, 'side');
        let fee = undefined;
        const feeCostString = this.safeString (trade, 'fee');
        if (feeCostString !== undefined) {
            const feeCurrencyId = this.safeString (trade, 'feeCurrency');
            let feeCurrency = this.safeCurrencyCode (feeCurrencyId);
            if (feeCurrency === undefined) {
                feeCurrency = (side === 'sell') ? market['quote'] : market['base'];
            }
            fee = {
                'cost': feeCostString,
                'currency': feeCurrency,
                'rate': this.safeString (trade, 'feeRate'),
            };
        }
        let type = this.safeString2 (trade, 'type', 'orderType');
        if (type === 'match') {
            type = undefined;
        }
        let costString = this.safeString2 (trade, 'funds', 'value');
        if (costString === undefined) {
            const contractSize = this.safeString (market, 'contractSize');
            const contractCost = Precise.stringMul (priceString, amountString);
            costString = Precise.stringMul (contractCost, contractSize);
        }
        return this.safeTrade ({
            'info': trade,
            'id': id,
            'order': orderId,
            'timestamp': timestamp,
            'datetime': this.iso8601 (timestamp),
            'symbol': market['symbol'],
            'type': type,
            'takerOrMaker': takerOrMaker,
            'side': side,
            'price': priceString,
            'amount': amountString,
            'cost': costString,
            'fee': fee,
        }, market);
    }

    async fetchDeposits (code = undefined, since = undefined, limit = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchDeposits
         * @description fetch all deposits made to an account
         * @param {str|undefined} code unified currency code
         * @param {int|undefined} since the earliest time in ms to fetch deposits for
         * @param {int|undefined} limit the maximum number of deposits structures to retrieve
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {[dict]} a list of [transaction structures]{@link https://docs.ccxt.com/en/latest/manual.html#transaction-structure}
         */
        await this.loadMarkets ();
        const request = {};
        let currency = undefined;
        if (code !== undefined) {
            currency = this.currency (code);
            request['currency'] = currency['id'];
        }
        if (limit !== undefined) {
            request['pageSize'] = limit;
        }
        if (since !== undefined) {
            request['startAt'] = since;
        }
        const response = await this.futuresPrivateGetDepositList (this.extend (request, params));
        //
        //     {
        //         code: '200000',
        //         data: {
        //             "currentPage": 1,
        //             "pageSize": 5,
        //             "totalNum": 2,
        //             "totalPage": 1,
        //             "items": [
        //                 {
        //                     "address": "0x5f047b29041bcfdbf0e4478cdfa753a336ba6989",
        //                     "memo": "5c247c8a03aa677cea2a251d",
        //                     "amount": 1,
        //                     "fee": 0.0001,
        //                     "currency": "KCS",
        //                     "isInner": false,
        //                     "walletTxId": "5bbb57386d99522d9f954c5a@test004",
        //                     "status": "SUCCESS",
        //                     "createdAt": 1544178843000,
        //                     "updatedAt": 1544178891000
        //                     "remark":"foobar"
        //                 },
        //                 ...
        //             ]
        //         }
        //     }
        //
        const responseData = response['data']['items'];
        return this.parseTransactions (responseData, currency, since, limit, { 'type': 'deposit' });
    }

    async fetchWithdrawals (code = undefined, since = undefined, limit = undefined, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchWithdrawals
         * @description fetch all withdrawals made from an account
         * @param {str|undefined} code unified currency code
         * @param {int|undefined} since the earliest time in ms to fetch withdrawals for
         * @param {int|undefined} limit the maximum number of withdrawals structures to retrieve
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {[dict]} a list of [transaction structures]{@link https://docs.ccxt.com/en/latest/manual.html#transaction-structure}
         */
        await this.loadMarkets ();
        const request = {};
        let currency = undefined;
        if (code !== undefined) {
            currency = this.currency (code);
            request['currency'] = currency['id'];
        }
        if (limit !== undefined) {
            request['pageSize'] = limit;
        }
        if (since !== undefined) {
            request['startAt'] = since;
        }
        const response = await this.futuresPrivateGetWithdrawalList (this.extend (request, params));
        //
        //     {
        //         code: '200000',
        //         data: {
        //             "currentPage": 1,
        //             "pageSize": 5,
        //             "totalNum": 2,
        //             "totalPage": 1,
        //             "items": [
        //                 {
        //                     "id": "5c2dc64e03aa675aa263f1ac",
        //                     "address": "0x5bedb060b8eb8d823e2414d82acce78d38be7fe9",
        //                     "memo": "",
        //                     "currency": "ETH",
        //                     "amount": 1.0000000,
        //                     "fee": 0.0100000,
        //                     "walletTxId": "3e2414d82acce78d38be7fe9",
        //                     "isInner": false,
        //                     "status": "FAILURE",
        //                     "createdAt": 1546503758000,
        //                     "updatedAt": 1546504603000
        //                 },
        //                 ...
        //             ]
        //         }
        //     }
        //
        const responseData = response['data']['items'];
        return this.parseTransactions (responseData, currency, since, limit, { 'type': 'withdrawal' });
    }

    async fetchTransactionFee (code, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchTransactionFee
         * @description fetch the fee for a transaction
         * @param {str} code unified currency code
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} a [fee structure]{@link https://docs.ccxt.com/en/latest/manual.html#fee-structure}
         */
        throw new BadRequest (this.id + ' fetchTransactionFee() is not supported yet');
    }

    async fetchLedger (code = undefined, since = undefined, limit = undefined, params = {}) {
        throw new BadRequest (this.id + ' fetchLedger() is not supported yet');
    }

    async fetchMarketLeverageTiers (symbol, params = {}) {
        /**
         * @method
         * @name kucoinfutures#fetchMarketLeverageTiers
         * @description retrieve information on the maximum leverage, and maintenance margin for trades of varying trade sizes for a single market
         * @param {str} symbol unified market symbol
         * @param {dict} params extra parameters specific to the kucoinfutures api endpoint
         * @returns {dict} a [leverage tiers structure]{@link https://docs.ccxt.com/en/latest/manual.html#leverage-tiers-structure}
         */
        await this.loadMarkets ();
        const market = this.market (symbol);
        if (!market['contract']) {
            throw new BadRequest (this.id + ' fetchMarketLeverageTiers() supports contract markets only');
        }
        const request = {
            'symbol': market['id'],
        };
        const response = await this.futuresPublicGetContractsRiskLimitSymbol (this.extend (request, params));
        //
        //    {
        //        "code": "200000",
        //        "data": [
        //            {
        //                "symbol": "ETHUSDTM",
        //                "level": 1,
        //                "maxRiskLimit": 300000,
        //                "minRiskLimit": 0,
        //                "maxLeverage": 100,
        //                "initialMargin": 0.0100000000,
        //                "maintainMargin": 0.0050000000
        //            },
        //            ...
        //        ]
        //    }
        //
        const data = this.safeValue (response, 'data');
        return this.parseMarketLeverageTiers (data, market);
    }

    parseMarketLeverageTiers (info, market) {
        /**
         * @ignore
         * @method
         * @param {dict} info Exchange market response for 1 market
         * @param {dict} market CCXT market
         */
        //
        //    {
        //        "symbol": "ETHUSDTM",
        //        "level": 1,
        //        "maxRiskLimit": 300000,
        //        "minRiskLimit": 0,
        //        "maxLeverage": 100,
        //        "initialMargin": 0.0100000000,
        //        "maintainMargin": 0.0050000000
        //    }
        //
        const tiers = [];
        for (let i = 0; i < info.length; i++) {
            const tier = info[i];
            tiers.push ({
                'tier': this.safeNumber (tier, 'level'),
                'currency': market['base'],
                'minNotional': this.safeNumber (tier, 'minRiskLimit'),
                'maxNotional': this.safeNumber (tier, 'maxRiskLimit'),
                'maintenanceMarginRate': this.safeNumber (tier, 'maintainMargin'),
                'maxLeverage': this.safeNumber (tier, 'maxLeverage'),
                'info': tier,
            });
        }
        return tiers;
    }
};