# -*- coding: utf-8 -*-

# PLEASE DO NOT EDIT THIS FILE, IT IS GENERATED AND WILL BE OVERWRITTEN:
# https://github.com/ccxt/ccxt/blob/master/CONTRIBUTING.md#how-to-contribute-code

from ccxt.base.exchange import Exchange
from ccxt.abstract.lbank import ImplicitAPI
import hashlib
from ccxt.base.types import Any, Balances, Currencies, Currency, DepositAddress, Int, Market, Num, Order, OrderBook, OrderSide, OrderType, Str, Strings, Ticker, Tickers, FundingRate, FundingRates, Trade, TradingFeeInterface, TradingFees, Transaction
from typing import List
from ccxt.base.errors import ExchangeError
from ccxt.base.errors import AuthenticationError
from ccxt.base.errors import PermissionDenied
from ccxt.base.errors import ArgumentsRequired
from ccxt.base.errors import BadRequest
from ccxt.base.errors import BadSymbol
from ccxt.base.errors import InsufficientFunds
from ccxt.base.errors import InvalidAddress
from ccxt.base.errors import InvalidOrder
from ccxt.base.errors import DuplicateOrderId
from ccxt.base.errors import NotSupported
from ccxt.base.errors import RateLimitExceeded
from ccxt.base.errors import InvalidNonce
from ccxt.base.decimal_to_precision import TICK_SIZE
from ccxt.base.precise import Precise


class lbank(Exchange, ImplicitAPI):

    def describe(self) -> Any:
        return self.deep_extend(super(lbank, self).describe(), {
            'id': 'lbank',
            'name': 'LBank',
            'countries': ['CN'],
            'version': 'v2',
            # 50 per second for making and cancelling orders 1000ms / 50 = 20
            # 20 per second for all other requests, cost = 50 / 20 = 2.5
            'rateLimit': 20,
            'pro': True,
            'has': {
                'CORS': False,
                'spot': True,
                'margin': False,
                'swap': None,
                'future': False,
                'option': False,
                'addMargin': False,
                'cancelAllOrders': True,
                'cancelOrder': True,
                'createMarketBuyOrderWithCost': True,
                'createMarketOrderWithCost': False,
                'createMarketSellOrderWithCost': False,
                'createOrder': True,
                'createReduceOnlyOrder': False,
                'createStopLimitOrder': False,
                'createStopMarketOrder': False,
                'createStopOrder': False,
                'fetchBalance': True,
                'fetchBorrowRateHistories': False,
                'fetchBorrowRateHistory': False,
                'fetchClosedOrders': False,
                'fetchCrossBorrowRate': False,
                'fetchCrossBorrowRates': False,
                'fetchCurrencies': True,
                'fetchDepositAddress': True,
                'fetchDepositAddresses': False,
                'fetchDepositAddressesByNetwork': False,
                'fetchDepositWithdrawFee': 'emulated',
                'fetchDepositWithdrawFees': True,
                'fetchFundingHistory': False,
                'fetchFundingRate': False,
                'fetchFundingRateHistory': False,
                'fetchFundingRates': True,
                'fetchIndexOHLCV': False,
                'fetchIsolatedBorrowRate': False,
                'fetchIsolatedBorrowRates': False,
                'fetchIsolatedPositions': False,
                'fetchLeverage': False,
                'fetchLeverageTiers': False,
                'fetchMarginMode': False,
                'fetchMarkets': True,
                'fetchMarkOHLCV': False,
                'fetchMyTrades': True,
                'fetchOHLCV': True,
                'fetchOpenOrders': True,
                'fetchOrder': True,
                'fetchOrderBook': True,
                'fetchOrders': True,
                'fetchPosition': False,
                'fetchPositionMode': False,
                'fetchPositions': False,
                'fetchPositionsRisk': False,
                'fetchPremiumIndexOHLCV': False,
                'fetchTicker': True,
                'fetchTickers': True,
                'fetchTime': True,
                'fetchTrades': True,
                'fetchTradingFees': True,
                'fetchTransactionFees': True,
                'reduceMargin': False,
                'setLeverage': False,
                'setMarginMode': False,
                'setPositionMode': False,
                'withdraw': True,
            },
            'timeframes': {
                '1m': 'minute1',
                '5m': 'minute5',
                '15m': 'minute15',
                '30m': 'minute30',
                '1h': 'hour1',
                '2h': 'hour2',
                '4h': 'hour4',
                '6h': 'hour6',
                '8h': 'hour8',
                '12h': 'hour12',
                '1d': 'day1',
                '1w': 'week1',
            },
            'urls': {
                'logo': 'https://user-images.githubusercontent.com/1294454/38063602-9605e28a-3302-11e8-81be-64b1e53c4cfb.jpg',
                'api': {
                    'rest': 'https://api.lbank.info',
                    'contract': 'https://lbkperp.lbank.com',
                },
                'api2': 'https://api.lbkex.com',
                'www': 'https://www.lbank.com',
                'doc': 'https://www.lbank.com/en-US/docs/index.html',
                'fees': 'https://support.lbank.site/hc/en-gb/articles/900000535703-Trading-Fees-From-14-00-on-April-7-2020-UTC-8-',
                'referral': 'https://www.lbank.com/login/?icode=7QCY',
            },
            'api': {
                'spot': {
                    'public': {
                        'get': {
                            'currencyPairs': 2.5,
                            'accuracy': 2.5,
                            'usdToCny': 2.5,
                            'assetConfigs': 2.5,
                            'withdrawConfigs': 2.5 * 1.5,  # frequently rate-limits, so increase self endpoint RL
                            'timestamp': 2.5,
                            'ticker/24hr': 2.5,
                            'ticker': 2.5,
                            'depth': 2.5,
                            'incrDepth': 2.5,
                            'trades': 2.5,
                            'kline': 2.5,
                            # new quote endpoints
                            'supplement/system_ping': 2.5,
                            'supplement/incrDepth': 2.5,
                            'supplement/trades': 2.5,
                            'supplement/ticker/price': 2.5,
                            'supplement/ticker/bookTicker': 2.5,
                        },
                        'post': {
                            'supplement/system_status': 2.5,
                        },
                    },
                    'private': {
                        'post': {
                            # account
                            'user_info': 2.5,
                            'subscribe/get_key': 2.5,
                            'subscribe/refresh_key': 2.5,
                            'subscribe/destroy_key': 2.5,
                            'get_deposit_address': 2.5,
                            'deposit_history': 2.5,
                            # order
                            'create_order': 1,
                            'batch_create_order': 1,
                            'cancel_order': 1,
                            'cancel_clientOrders': 1,
                            'orders_info': 2.5,
                            'orders_info_history': 2.5,
                            'order_transaction_detail': 2.5,
                            'transaction_history': 2.5,
                            'orders_info_no_deal': 2.5,
                            # withdraw
                            'withdraw': 2.5,
                            'withdrawCancel': 2.5,
                            'withdraws': 2.5,
                            'supplement/user_info': 2.5,
                            'supplement/withdraw': 2.5,
                            'supplement/deposit_history': 2.5,
                            'supplement/withdraws': 2.5,
                            'supplement/get_deposit_address': 2.5,
                            'supplement/asset_detail': 2.5,
                            'supplement/customer_trade_fee': 2.5,
                            'supplement/api_Restrictions': 2.5,
                            # new quote endpoints
                            'supplement/system_ping': 2.5,
                            # new order endpoints
                            'supplement/create_order_test': 1,
                            'supplement/create_order': 1,
                            'supplement/cancel_order': 1,
                            'supplement/cancel_order_by_symbol': 1,
                            'supplement/orders_info': 2.5,
                            'supplement/orders_info_no_deal': 2.5,
                            'supplement/orders_info_history': 2.5,
                            'supplement/user_info_account': 2.5,
                            'supplement/transaction_history': 2.5,
                        },
                    },
                },
                'contract': {
                    'public': {
                        'get': {
                            'cfd/openApi/v1/pub/getTime': 2.5,
                            'cfd/openApi/v1/pub/instrument': 2.5,
                            'cfd/openApi/v1/pub/marketData': 2.5,
                            'cfd/openApi/v1/pub/marketOrder': 2.5,
                        },
                    },
                },
            },
            'fees': {
                'trading': {
                    'maker': self.parse_number('0.001'),
                    'taker': self.parse_number('0.001'),
                },
                'funding': {
                    'withdraw': {},
                },
            },
            'commonCurrencies': {
                'XBT': 'XBT',  # not BTC!
                'HIT': 'Hiver',
                'VET_ERC20': 'VEN',
                'PNT': 'Penta',
            },
            'precisionMode': TICK_SIZE,
            'options': {
                'cacheSecretAsPem': True,
                'createMarketBuyOrderRequiresPrice': True,
                'fetchTrades': {
                    'method': 'spotPublicGetTrades',  # or 'spotPublicGetTradesSupplement'
                },
                'fetchTransactionFees': {  # DEPRECATED, please use fetchDepositWithdrawFees
                    'method': 'fetchPrivateTransactionFees',  # or 'fetchPublicTransactionFees'
                },
                'fetchDepositWithdrawFees': {
                    'method': 'fetchPrivateDepositWithdrawFees',  # or 'fetchPublicDepositWithdrawFees'
                },
                'fetchDepositAddress': {
                    'method': 'fetchDepositAddressDefault',  # or fetchDepositAddressSupplement
                },
                'createOrder': {
                    'method': 'spotPrivatePostSupplementCreateOrder',  # or spotPrivatePostCreateOrder
                },
                'fetchOrder': {
                    'method': 'fetchOrderSupplement',  # or fetchOrderDefault
                },
                'fetchBalance': {
                    'method': 'spotPrivatePostSupplementUserInfo',  # or spotPrivatePostSupplementUserInfoAccount or spotPrivatePostUserInfo
                },
                'networks': {
                    'ERC20': 'erc20',
                    'ETH': 'erc20',
                    'TRC20': 'trc20',
                    'TRX': 'trc20',
                    'OMNI': 'omni',
                    'ASA': 'asa',
                    'BEP20': 'bep20(bsc)',
                    'BSC': 'bep20(bsc)',
                    'HT': 'heco',
                    'BNB': 'bep2',
                    'BTC': 'btc',
                    'DOGE': 'dogecoin',
                    'MATIC': 'matic',
                    'POLYGON': 'matic',
                    'OEC': 'oec',
                    'BTCTRON': 'btctron',
                    'XRP': 'xrp',
                    # other unusual chains with number of listed currencies supported
                    #     'avax c-chain': 1,
                    #     klay: 12,
                    #     bta: 1,
                    #     fantom: 1,
                    #     celo: 1,
                    #     sol: 2,
                    #     zenith: 1,
                    #     ftm: 5,
                    #     bep20: 1,(single token with mis-named chain) SSS
                    #     bitci: 1,
                    #     sgb: 1,
                    #     moonbeam: 1,
                    #     ekta: 1,
                    #     etl: 1,
                    #     arbitrum: 1,
                    #     tpc: 1,
                    #     ptx: 1
                    # }
                },
                'networksById': {
                    'erc20': 'ERC20',
                    'trc20': 'TRC20',
                    'TRX': 'TRC20',
                    'bep20(bsc)': 'BEP20',
                    'bep20': 'BEP20',
                },
                'defaultNetworks': {
                    'USDT': 'TRC20',
                },
            },
            'features': {
                'default': {
                    'sandbox': False,
                    'createOrder': {
                        'marginMode': False,
                        'triggerPrice': False,
                        'triggerPriceType': None,
                        'triggerDirection': False,
                        'stopLossPrice': False,
                        'takeProfitPrice': False,
                        'attachedStopLossTakeProfit': None,
                        'timeInForce': {
                            'IOC': True,
                            'FOK': True,
                            'PO': False,
                            'GTD': False,
                        },
                        'hedged': False,
                        'selfTradePrevention': False,
                        'trailing': False,
                        'leverage': False,
                        'marketBuyByCost': True,
                        'marketBuyRequiresPrice': False,
                        'iceberg': False,
                    },
                    'createOrders': None,  # todo
                    'fetchMyTrades': {
                        'marginMode': False,
                        'limit': 100,
                        'daysBack': 100000,  # todo
                        'untilDays': 2,
                        'symbolRequired': True,
                    },
                    'fetchOrder': {
                        'marginMode': False,
                        'trigger': False,
                        'trailing': False,
                        'symbolRequired': True,
                    },
                    'fetchOpenOrders': {
                        'marginMode': False,
                        'limit': 200,
                        'trigger': False,
                        'trailing': False,
                        'symbolRequired': True,
                    },
                    'fetchOrders': {
                        'marginMode': False,
                        'limit': 200,
                        'daysBack': None,
                        'untilDays': None,
                        'trigger': False,
                        'trailing': False,
                        'symbolRequired': True,
                    },
                    'fetchClosedOrders': None,  # todo: through fetchOrders "status" -1: Cancelled 0: Unfilled 1: Partially filled 2: Completely filled 3: Partially filled has been cancelled 4: Cancellation is being processed
                    'fetchOHLCV': {
                        'limit': 2000,
                    },
                },
                'spot': {
                    'extends': 'default',
                },
                'swap': {
                    'linear': {
                        'extends': 'default',
                    },
                    'inverse': None,
                },
                'future': {
                    'linear': None,
                    'inverse': None,
                },
            },
        })

    def fetch_time(self, params={}) -> Int:
        """
        fetches the current integer timestamp in milliseconds from the exchange server

        https://www.lbank.com/en-US/docs/index.html#get-timestamp
        https://www.lbank.com/en-US/docs/contract.html#get-the-current-time

        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns int: the current integer timestamp in milliseconds from the exchange server
        """
        type = None
        type, params = self.handle_market_type_and_params('fetchTime', None, params)
        response = None
        if type == 'swap':
            response = self.contractPublicGetCfdOpenApiV1PubGetTime(params)
        else:
            response = self.spotPublicGetTimestamp(params)
        #
        # spot
        #
        #     {
        #         "result": "true",
        #         "data": 1691789627950,
        #         "error_code": 0,
        #         "ts": 1691789627950
        #     }
        #
        # swap
        #
        #     {
        #         "data": 1691789627950,
        #         "error_code": 0,
        #         "msg": "Success",
        #         "result": "true",
        #         "success": True
        #     }
        #
        return self.safe_integer(response, 'data')

    def fetch_currencies(self, params={}) -> Currencies:
        """
        fetches all available currencies on an exchange
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: an associative dictionary of currencies
        """
        response = self.spotPublicGetWithdrawConfigs(params)
        #
        #    {
        #        "msg": "Success",
        #        "result": "true",
        #        "data": [
        #            {
        #                "amountScale": "4",
        #                "chain": "bep20(bsc)",
        #                "assetCode": "usdt",
        #                "min": "10",
        #                "transferAmtScale": "4",
        #                "canWithDraw": True,
        #                "fee": "0.0000",
        #                "minTransfer": "0.0001",
        #                "type": "1"
        #            },
        #            {
        #                "amountScale": "4",
        #                "chain": "trc20",
        #                "assetCode": "usdt",
        #                "min": "1",
        #                "transferAmtScale": "4",
        #                "canWithDraw": True,
        #                "fee": "1.0000",
        #                "minTransfer": "0.0001",
        #                "type": "1"
        #            },
        #            ...
        #        ],
        #        "error_code": "0",
        #        "ts": "1747973911431"
        #    }
        #
        currenciesData = self.safe_list(response, 'data', [])
        grouped = self.group_by(currenciesData, 'assetCode')
        groupedKeys = list(grouped.keys())
        result: dict = {}
        for i in range(0, len(groupedKeys)):
            id = str((groupedKeys[i]))  # some currencies are numeric
            code = self.safe_currency_code(id)
            networksRaw = grouped[id]
            networks = {}
            for j in range(0, len(networksRaw)):
                networkEntry = networksRaw[j]
                networkId = self.safe_string(networkEntry, 'chain')
                if networkId is None:
                    networkId = self.safe_string(networkEntry, 'assetCode')  # use type if networkId is not present
                networkCode = self.network_id_to_code(networkId)
                networks[networkCode] = {
                    'id': networkId,
                    'network': networkCode,
                    'limits': {
                        'withdraw': {
                            'min': self.safe_number(networkEntry, 'min'),
                            'max': None,
                        },
                        'deposit': {
                            'min': self.safe_number(networkEntry, 'minTransfer'),
                            'max': None,
                        },
                    },
                    'active': None,
                    'deposit': None,
                    'withdraw': self.safe_bool(networkEntry, 'canWithDraw'),
                    'fee': self.safe_number(networkEntry, 'fee'),
                    'precision': self.parse_number(self.parse_precision(self.safe_string(networkEntry, 'transferAmtScale'))),
                    'info': networkEntry,
                }
            result[code] = self.safe_currency_structure({
                'id': id,
                'code': code,
                'precision': None,
                'type': None,
                'name': None,
                'active': None,
                'deposit': None,
                'withdraw': None,
                'fee': None,
                'limits': {
                    'withdraw': {
                        'min': None,
                        'max': None,
                    },
                    'deposit': {
                        'min': None,
                        'max': None,
                    },
                },
                'networks': networks,
                'info': networksRaw,
            })
        return result

    def fetch_markets(self, params={}) -> List[Market]:
        """
        retrieves data on all markets for lbank

        https://www.lbank.com/en-US/docs/index.html#trading-pairs
        https://www.lbank.com/en-US/docs/contract.html#query-contract-information-list

        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict[]: an array of objects representing market data
        """
        marketsPromises = [
            self.fetch_spot_markets(params),
            self.fetch_swap_markets(params),
        ]
        resolvedMarkets = marketsPromises
        return self.array_concat(resolvedMarkets[0], resolvedMarkets[1])

    def fetch_spot_markets(self, params={}):
        response = self.spotPublicGetAccuracy(params)
        #
        #     {
        #         "result": "true",
        #         "data": [
        #             {
        #                 "symbol": "btc_usdt",
        #                 "quantityAccuracy": "4",
        #                 "minTranQua": "0.0001",
        #                 "priceAccuracy": "2"
        #             },
        #         ],
        #         "error_code": 0,
        #         "ts": 1691560288484
        #     }
        #
        data = self.safe_value(response, 'data', [])
        result = []
        for i in range(0, len(data)):
            market = data[i]
            marketId = self.safe_string(market, 'symbol')
            parts = marketId.split('_')
            baseId = parts[0]
            quoteId = parts[1]
            base = self.safe_currency_code(baseId)
            quote = self.safe_currency_code(quoteId)
            symbol = base + '/' + quote
            result.append({
                'id': marketId,
                'symbol': symbol,
                'base': base,
                'quote': quote,
                'baseId': baseId,
                'quoteId': quoteId,
                'settle': None,
                'settleId': None,
                'type': 'spot',
                'spot': True,
                'margin': False,
                'swap': False,
                'future': False,
                'option': False,
                'active': True,
                'contract': False,
                'linear': None,
                'inverse': None,
                'contractSize': None,
                'expiry': None,
                'expiryDatetime': None,
                'strike': None,
                'optionType': None,
                'precision': {
                    'amount': self.parse_number(self.parse_precision(self.safe_string(market, 'quantityAccuracy'))),
                    'price': self.parse_number(self.parse_precision(self.safe_string(market, 'priceAccuracy'))),
                },
                'limits': {
                    'leverage': {
                        'min': None,
                        'max': None,
                    },
                    'amount': {
                        'min': self.safe_number(market, 'minTranQua'),
                        'max': None,
                    },
                    'price': {
                        'min': None,
                        'max': None,
                    },
                    'cost': {
                        'min': None,
                        'max': None,
                    },
                },
                'created': None,
                'info': market,
            })
        return result

    def fetch_swap_markets(self, params={}):
        request: dict = {
            'productGroup': 'SwapU',
        }
        response = self.contractPublicGetCfdOpenApiV1PubInstrument(self.extend(request, params))
        #
        #     {
        #         "data": [
        #             {
        #                 "priceLimitUpperValue": 0.2,
        #                 "symbol": "BTCUSDT",
        #                 "volumeTick": 0.0001,
        #                 "indexPrice": "29707.70200000",
        #                 "minOrderVolume": "0.0001",
        #                 "priceTick": 0.1,
        #                 "maxOrderVolume": "30.0",
        #                 "baseCurrency": "BTC",
        #                 "volumeMultiple": 1.0,
        #                 "exchangeID": "Exchange",
        #                 "priceCurrency": "USDT",
        #                 "priceLimitLowerValue": 0.2,
        #                 "clearCurrency": "USDT",
        #                 "symbolName": "BTCUSDT",
        #                 "defaultLeverage": 20.0,
        #                 "minOrderCost": "5.0"
        #             },
        #         ],
        #         "error_code": 0,
        #         "msg": "Success",
        #         "result": "true",
        #         "success": True
        #     }
        #
        data = self.safe_value(response, 'data', [])
        result = []
        for i in range(0, len(data)):
            market = data[i]
            marketId = self.safe_string(market, 'symbol')
            baseId = self.safe_string(market, 'baseCurrency')
            settleId = self.safe_string(market, 'clearCurrency')
            quoteId = settleId
            base = self.safe_currency_code(baseId)
            quote = self.safe_currency_code(quoteId)
            settle = self.safe_currency_code(settleId)
            symbol = base + '/' + quote + ':' + settle
            result.append({
                'id': marketId,
                'symbol': symbol,
                'base': base,
                'quote': quote,
                'settle': settle,
                'baseId': baseId,
                'quoteId': quoteId,
                'settleId': settleId,
                'type': 'swap',
                'spot': False,
                'margin': False,
                'swap': True,
                'future': False,
                'option': False,
                'active': True,
                'contract': True,
                'linear': True,
                'inverse': False,
                'contractSize': self.safe_number(market, 'volumeMultiple'),
                'expiry': None,
                'expiryDatetime': None,
                'strike': None,
                'optionType': None,
                'precision': {
                    'amount': self.safe_number(market, 'volumeTick'),
                    'price': self.safe_number(market, 'priceTick'),
                },
                'limits': {
                    'leverage': {
                        'min': None,
                        'max': None,
                    },
                    'amount': {
                        'min': self.safe_number(market, 'minOrderVolume'),
                        'max': self.safe_number(market, 'maxOrderVolume'),
                    },
                    'price': {
                        'min': self.safe_number(market, 'priceLimitLowerValue'),
                        'max': self.safe_number(market, 'priceLimitUpperValue'),
                    },
                    'cost': {
                        'min': self.safe_number(market, 'minOrderCost'),
                        'max': None,
                    },
                },
                'created': None,
                'info': market,
            })
        return result

    def parse_ticker(self, ticker: dict, market: Market = None) -> Ticker:
        #
        # spot: fetchTicker, fetchTickers
        #
        #     {
        #         "symbol": "btc_usdt",
        #         "ticker": {
        #             "high": "29695.57",
        #             "vol": "6890.2789",
        #             "low": "29110",
        #             "change": "0.58",
        #             "turnover": "202769821.06",
        #             "latest": "29405.98"
        #         },
        #         "timestamp": :1692064274908
        #     }
        #
        # swap: fetchTickers
        #
        #     {
        #         "prePositionFeeRate": "0.000053",
        #         "volume": "2435.459",
        #         "symbol": "BTCUSDT",
        #         "highestPrice": "29446.5",
        #         "lowestPrice": "29362.9",
        #         "openPrice": "29419.5",
        #         "markedPrice": "29385.1",
        #         "turnover": "36345526.2438402",
        #         "lastPrice": "29387.0"
        #     }
        #
        timestamp = self.safe_integer(ticker, 'timestamp')
        marketId = self.safe_string(ticker, 'symbol')
        symbol = self.safe_symbol(marketId, market)
        tickerData = self.safe_value(ticker, 'ticker', {})
        market = self.safe_market(marketId, market)
        data = ticker if (market['contract']) else tickerData
        return self.safe_ticker({
            'symbol': symbol,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'high': self.safe_string_2(data, 'high', 'highestPrice'),
            'low': self.safe_string_2(data, 'low', 'lowestPrice'),
            'bid': None,
            'bidVolume': None,
            'ask': None,
            'askVolume': None,
            'vwap': None,
            'open': self.safe_string(data, 'openPrice'),
            'close': None,
            'last': self.safe_string_2(data, 'latest', 'lastPrice'),
            'previousClose': None,
            'change': None,
            'percentage': self.safe_string(data, 'change'),
            'average': None,
            'baseVolume': self.safe_string_2(data, 'vol', 'volume'),
            'quoteVolume': self.safe_string(data, 'turnover'),
            'info': ticker,
        }, market)

    def fetch_ticker(self, symbol: str, params={}) -> Ticker:
        """
        fetches a price ticker, a statistical calculation with the information calculated over the past 24 hours for a specific market

        https://www.lbank.com/en-US/docs/index.html#query-current-market-data-new

        :param str symbol: unified symbol of the market to fetch the ticker for
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: a `ticker structure <https://docs.ccxt.com/?id=ticker-structure>`
        """
        self.load_markets()
        market = self.market(symbol)
        if market['swap']:
            responseForSwap = self.fetch_tickers([market['symbol']], params)
            return self.safe_value(responseForSwap, market['symbol'])
        request: dict = {
            'symbol': market['id'],
        }
        response = self.spotPublicGetTicker24hr(self.extend(request, params))
        #
        #     {
        #         "result": "true",
        #         "data": [
        #             {
        #                 "symbol": "btc_usdt",
        #                 "ticker": {
        #                     "high": "29695.57",
        #                     "vol": "6890.2789",
        #                     "low": "29110",
        #                     "change": "0.58",
        #                     "turnover": "202769821.06",
        #                     "latest": "29405.98"
        #                 },
        #                 "timestamp": :1692064274908
        #             }
        #         ],
        #         "error_code": 0,
        #         "ts": :1692064276872
        #     }
        #
        data = self.safe_value(response, 'data', [])
        first = self.safe_dict(data, 0, {})
        return self.parse_ticker(first, market)

    def fetch_tickers(self, symbols: Strings = None, params={}) -> Tickers:
        """
        fetches price tickers for multiple markets, statistical information calculated over the past 24 hours for each market

        https://www.lbank.com/en-US/docs/index.html#query-current-market-data-new
        https://www.lbank.com/en-US/docs/contract.html#query-contract-market-list

        :param str[]|None symbols: unified symbols of the markets to fetch the ticker for, all market tickers are returned if not assigned
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: a dictionary of `ticker structures <https://docs.ccxt.com/?id=ticker-structure>`
        """
        self.load_markets()
        market = None
        if symbols is not None:
            symbols = self.market_symbols(symbols)
            symbolsLength = len(symbols)
            if symbolsLength > 0:
                market = self.market(symbols[0])
        request: dict = {}
        type = None
        type, params = self.handle_market_type_and_params('fetchTickers', market, params)
        response = None
        if type == 'swap':
            request['productGroup'] = 'SwapU'
            response = self.contractPublicGetCfdOpenApiV1PubMarketData(self.extend(request, params))
        else:
            request['symbol'] = 'all'
            response = self.spotPublicGetTicker24hr(self.extend(request, params))
        #
        # spot
        #
        #     {
        #         "result": "true",
        #         "data": [
        #             {
        #                 "symbol": "btc_usdt",
        #                 "ticker": {
        #                     "high": "29695.57",
        #                     "vol": "6890.2789",
        #                     "low": "29110",
        #                     "change": "0.58",
        #                     "turnover": "202769821.06",
        #                     "latest": "29405.98"
        #                 },
        #                 "timestamp": :1692064274908
        #             }
        #         ],
        #         "error_code": 0,
        #         "ts": :1692064276872
        #     }
        #
        # swap
        #
        #     {
        #         "data": [
        #             {
        #                 "prePositionFeeRate": "0.000053",
        #                 "volume": "2435.459",
        #                 "symbol": "BTCUSDT",
        #                 "highestPrice": "29446.5",
        #                 "lowestPrice": "29362.9",
        #                 "openPrice": "29419.5",
        #                 "markedPrice": "29385.1",
        #                 "turnover": "36345526.2438402",
        #                 "lastPrice": "29387.0"
        #             },
        #         ],
        #         "error_code": 0,
        #         "msg": "Success",
        #         "result": "true",
        #         "success": True
        #     }
        #
        data = self.safe_list(response, 'data', [])
        return self.parse_tickers(data, symbols)

    def fetch_order_book(self, symbol: str, limit: Int = None, params={}) -> OrderBook:
        """
        fetches information on open orders with bid(buy) and ask(sell) prices, volumes and other data

        https://www.lbank.com/en-US/docs/index.html#query-market-depth
        https://www.lbank.com/en-US/docs/contract.html#get-handicap

        :param str symbol: unified symbol of the market to fetch the order book for
        :param int [limit]: the maximum amount of order book entries to return
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: A dictionary of `order book structures <https://docs.ccxt.com/?id=order-book-structure>` indexed by market symbols
        """
        self.load_markets()
        market = self.market(symbol)
        if limit is None:
            limit = 60
        request: dict = {
            'symbol': market['id'],
        }
        type = None
        type, params = self.handle_market_type_and_params('fetchOrderBook', market, params)
        response = None
        if type == 'swap':
            request['depth'] = limit
            response = self.contractPublicGetCfdOpenApiV1PubMarketOrder(self.extend(request, params))
        else:
            request['size'] = limit
            response = self.spotPublicGetDepth(self.extend(request, params))
        #
        # spot
        #
        #     {
        #         "result": "true",
        #         "data": {
        #             "asks": [
        #                 ["29243.37", "2.8783"],
        #                 ["29243.39", "2.2842"],
        #                 ["29243.4", "0.0337"]
        #             ],
        #             "bids": [
        #                 ["29243.36", "1.5258"],
        #                 ["29243.34", "0.8218"],
        #                 ["29243.28", "1.285"]
        #             ],
        #             "timestamp": :1692157328820
        #         },
        #         "error_code": 0,
        #         "ts": :1692157328820
        #     }
        #
        # swap
        #
        #     {
        #         "data": {
        #             "symbol": "BTCUSDT",
        #             "asks": [
        #                 {
        #                     "volume": "14.6535",
        #                     "price": "29234.2",
        #                     "orders": "1"
        #                 },
        #             ],
        #             "bids": [
        #                 {
        #                     "volume": "13.4899",
        #                     "price": "29234.1",
        #                     "orders": "4"
        #                 },
        #             ]
        #         },
        #         "error_code": 0,
        #         "msg": "Success",
        #         "result": "true",
        #         "success": True
        #     }
        #
        orderbook = self.safe_value(response, 'data', {})
        timestamp = self.milliseconds()
        if market['swap']:
            return self.parse_order_book(orderbook, market['symbol'], timestamp, 'bids', 'asks', 'price', 'volume')
        return self.parse_order_book(orderbook, market['symbol'], timestamp, 'bids', 'asks')

    def parse_trade(self, trade: dict, market: Market = None) -> Trade:
        #
        # fetchTrades(old) spotPublicGetTrades
        #
        #      {
        #          "date_ms":1647021989789,
        #          "amount":0.0028,
        #          "price":38804.2,
        #          "type":"buy",
        #          "tid":"52d5616ee35c43019edddebe59b3e094"
        #      }
        #
        #
        # fetchTrades(new) spotPublicGetTradesSupplement
        #
        #      {
        #          "quoteQty":1675.048485,
        #          "price":0.127545,
        #          "qty":13133,
        #          "id":"3589541dc22e4357b227283650f714e2",
        #          "time":1648058297110,
        #          "isBuyerMaker":false
        #      }
        #
        # fetchMyTrades(private)
        #
        #      {
        #          "orderUuid":"38b4e7a4-14f6-45fd-aba1-1a37024124a0",
        #          "tradeFeeRate":0.0010000000,
        #          "dealTime":1648500944496,
        #          "dealQuantity":30.00000000000000000000,
        #          "tradeFee":0.00453300000000000000,
        #          "txUuid":"11f3850cc6214ea3b495adad3a032794",
        #          "dealPrice":0.15111300000000000000,
        #          "dealVolumePrice":4.53339000000000000000,
        #          "tradeType":"sell_market"
        #      }
        #
        timestamp = self.safe_integer_2(trade, 'date_ms', 'time')
        if timestamp is None:
            timestamp = self.safe_integer(trade, 'dealTime')
        amountString = self.safe_string_2(trade, 'amount', 'qty')
        if amountString is None:
            amountString = self.safe_string(trade, 'dealQuantity')
        priceString = self.safe_string(trade, 'price')
        if priceString is None:
            priceString = self.safe_string(trade, 'dealPrice')
        costString = self.safe_string(trade, 'quoteQty')
        if costString is None:
            costString = self.safe_string(trade, 'dealVolumePrice')
        side = self.safe_string_2(trade, 'tradeType', 'type')
        type = None
        takerOrMaker = None
        if side is not None:
            parts = side.split('_')
            side = self.safe_string(parts, 0)
            typePart = self.safe_string(parts, 1)
            type = 'limit'
            takerOrMaker = 'taker'
            if typePart is not None:
                if typePart == 'market':
                    type = 'market'
                elif typePart == 'maker':
                    takerOrMaker = 'maker'
        id = self.safe_string_2(trade, 'tid', 'id')
        if id is None:
            id = self.safe_string(trade, 'txUuid')
        order = self.safe_string(trade, 'orderUuid')
        symbol = self.safe_symbol(None, market)
        fee = None
        feeCost = self.safe_string(trade, 'tradeFee')
        if feeCost is not None:
            feeCurr = market['base'] if (side == 'buy') else market['quote']
            fee = {
                'cost': feeCost,
                'currency': feeCurr,
                'rate': self.safe_string(trade, 'tradeFeeRate'),
            }
        return self.safe_trade({
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'symbol': symbol,
            'id': id,
            'order': order,
            'type': type,
            'takerOrMaker': takerOrMaker,
            'side': side,
            'price': priceString,
            'amount': amountString,
            'cost': costString,
            'fee': fee,
            'info': trade,
        }, market)

    def fetch_trades(self, symbol: str, since: Int = None, limit: Int = None, params={}) -> List[Trade]:
        """
        get the list of most recent trades for a particular symbol

        https://www.lbank.com/en-US/docs/index.html#query-historical-transactions
        https://www.lbank.com/en-US/docs/index.html#recent-transactions-list

        :param str symbol: unified symbol of the market to fetch trades for
        :param int [since]: timestamp in ms of the earliest trade to fetch
        :param int [limit]: the maximum amount of trades to fetch
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns Trade[]: a list of `trade structures <https://docs.ccxt.com/?id=public-trades>`
        """
        self.load_markets()
        market = self.market(symbol)
        request: dict = {
            'symbol': market['id'],
        }
        if since is not None:
            request['time'] = since
        if limit is not None:
            request['size'] = min(limit, 600)
        else:
            request['size'] = 600  # max
        options = self.safe_value(self.options, 'fetchTrades', {})
        defaultMethod = self.safe_string(options, 'method', 'spotPublicGetTrades')
        method = self.safe_string(params, 'method', defaultMethod)
        params = self.omit(params, 'method')
        response = None
        if method == 'spotPublicGetSupplementTrades':
            response = self.spotPublicGetSupplementTrades(self.extend(request, params))
        else:
            response = self.spotPublicGetTrades(self.extend(request, params))
        #
        #      {
        #          "result":"true",
        #          "data": [
        #              {
        #                  "date_ms":1647021989789,
        #                  "amount":0.0028,
        #                  "price":38804.2,
        #                  "type":"buy",
        #                  "tid":"52d5616ee35c43019edddebe59b3e094"
        #               }
        #           ],
        #           "error_code":0,
        #           "ts":1647021999308
        #      }
        #
        trades = self.safe_list(response, 'data', [])
        return self.parse_trades(trades, market, since, limit)

    def parse_ohlcv(self, ohlcv, market: Market = None) -> list:
        #
        #   [
        #     1482311500,  # timestamp
        #     5423.23,    # open
        #     5472.80,    # high
        #     5516.09,    # low
        #     5462,       # close
        #     234.3250    # volume
        #   ],
        #
        return [
            self.safe_timestamp(ohlcv, 0),  # timestamp
            self.safe_number(ohlcv, 1),  # open
            self.safe_number(ohlcv, 2),  # high
            self.safe_number(ohlcv, 3),  # low
            self.safe_number(ohlcv, 4),  # close
            self.safe_number(ohlcv, 5),  # volume
        ]

    def fetch_ohlcv(self, symbol: str, timeframe: str = '1m', since: Int = None, limit: Int = None, params={}) -> List[list]:
        """
        fetches historical candlestick data containing the open, high, low, and close price, and the volume of a market

        https://www.lbank.com/en-US/docs/index.html#query-k-bar-data

        :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 [since]: timestamp in ms of the earliest candle to fetch
        :param int [limit]: the maximum amount of candles to fetch
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns int[][]: A list of candles ordered, open, high, low, close, volume
        """
        # endpoint doesnt work
        self.load_markets()
        market = self.market(symbol)
        if limit is None:
            limit = 100
        else:
            limit = min(limit, 2000)
        if since is None:
            duration = self.parse_timeframe(timeframe)
            since = self.milliseconds() - (duration * 1000 * limit)
        parsedSince = self.parse_to_int(since / 1000)
        parsedLimit = min(limit + 1, 2000)  # max 2000
        request: dict = {
            'symbol': market['id'],
            'type': self.safe_string(self.timeframes, timeframe, timeframe),
            'time': parsedSince,
            'size': parsedLimit,
        }
        response = self.spotPublicGetKline(self.extend(request, params))
        ohlcvs = self.safe_list(response, 'data', [])
        #
        #
        # [
        #   [
        #     1482311500,
        #     5423.23,
        #     5472.80,
        #     5516.09,
        #     5462,
        #     234.3250
        #   ],
        #   [
        #     1482311400,
        #     5432.52,
        #     5459.87,
        #     5414.30,
        #     5428.23,
        #     213.7329
        #   ]
        # ]
        #
        return self.parse_ohlcvs(ohlcvs, market, timeframe, since, limit)

    def parse_balance(self, response) -> Balances:
        #
        # spotPrivatePostUserInfo
        #
        #      {
        #          "toBtc": {
        #              "egc:": "0",
        #              "iog": "0",
        #              "ksm": "0",
        #              },
        #          "freeze": {
        #              "egc": "0",
        #              "iog": "0",
        #              "ksm": "0" ,
        #              },
        #          "asset": {
        #              "egc": "0",
        #              "iog": "0",
        #              "ksm": "0",
        #              },
        #          "free": {
        #              "egc": "0",
        #              "iog": "0",
        #              "ksm": "0",
        #              }
        #      }
        #
        # spotPrivatePostSupplementUserInfoAccount
        #
        #      {
        #          "balances":[
        #              {
        #                  "asset":"lbk",
        #                  "free":"0",
        #                  "locked":"0"
        #              }, ...
        #          ]
        #      }
        #
        # spotPrivatePostSupplementUserInfo
        #
        #      [
        #          {
        #              "usableAmt":"31.45130723",
        #              "assetAmt":"31.45130723",
        #              "networkList":[
        #                  {
        #                      "isDefault":true,
        #                      "withdrawFeeRate":"",
        #                      "name":"bep20(bsc)",
        #                      "withdrawMin":30,
        #                      "minLimit":0.0001,
        #                      "minDeposit":0.0001,
        #                      "feeAssetCode":"doge",
        #                      "withdrawFee":"30",
        #                      "type":1,
        #                      "coin":"doge",
        #                      "network":"bsc"
        #                  },
        #                  {
        #                      "isDefault":false,
        #                      "withdrawFeeRate":"",
        #                      "name":"dogecoin",
        #                      "withdrawMin":10,
        #                      "minLimit":0.0001,
        #                      "minDeposit":10,
        #                      "feeAssetCode":"doge",
        #                      "withdrawFee":"10",
        #                      "type":1,
        #                      "coin":"doge",
        #                      "network":"dogecoin"
        #                  }
        #              ],
        #              "freezeAmt":"0",
        #              "coin":"doge"
        #          }, ...
        #      ]
        #
        timestamp = self.safe_integer(response, 'ts')
        result: dict = {
            'info': response,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
        }
        data = self.safe_value(response, 'data')
        # from spotPrivatePostUserInfo
        toBtc = self.safe_value(data, 'toBtc')
        if toBtc is not None:
            used = self.safe_value(data, 'freeze', {})
            free = self.safe_value(data, 'free', {})
            currencies = list(free.keys())
            for i in range(0, len(currencies)):
                currencyId = currencies[i]
                code = self.safe_currency_code(currencyId)
                account = self.account()
                account['used'] = self.safe_string(used, currencyId)
                account['free'] = self.safe_string(free, currencyId)
                result[code] = account
            return self.safe_balance(result)
        # from spotPrivatePostSupplementUserInfoAccount
        balances = self.safe_value(data, 'balances')
        if balances is not None:
            for i in range(0, len(balances)):
                item = balances[i]
                currencyId = self.safe_string(item, 'asset')
                codeInner = self.safe_currency_code(currencyId)
                account = self.account()
                account['free'] = self.safe_string(item, 'free')
                account['used'] = self.safe_string(item, 'locked')
                result[codeInner] = account
            return self.safe_balance(result)
        # from spotPrivatePostSupplementUserInfo
        isArray = isinstance(data, list)
        if isArray is True:
            for i in range(0, len(data)):
                item = data[i]
                currencyId = self.safe_string(item, 'coin')
                codeInner = self.safe_currency_code(currencyId)
                account = self.account()
                account['free'] = self.safe_string(item, 'usableAmt')
                account['used'] = self.safe_string(item, 'freezeAmt')
                result[codeInner] = account
            return self.safe_balance(result)
        return None

    def parse_funding_rate(self, ticker, market: Market = None) -> FundingRate:
        # {
        #     "symbol": "BTCUSDT",
        #     "highestPrice": "69495.5",
        #     "underlyingPrice": "68455.904",
        #     "lowestPrice": "68182.1",
        #     "openPrice": "68762.4",
        #     "positionFeeRate": "0.0001",
        #     "volume": "33534.2858",
        #     "markedPrice": "68434.1",
        #     "turnover": "1200636218.210558",
        #     "positionFeeTime": "28800",
        #     "lastPrice": "68427.3",
        #     "nextFeeTime": "1730736000000",
        #     "fundingRate": "0.0001",
        # }
        marketId = self.safe_string(ticker, 'symbol')
        symbol = self.safe_symbol(marketId, market)
        markPrice = self.safe_number(ticker, 'markedPrice')
        indexPrice = self.safe_number(ticker, 'underlyingPrice')
        fundingRate = self.safe_number(ticker, 'fundingRate')
        fundingTime = self.safe_integer(ticker, 'nextFeeTime')
        positionFeeTime = self.safe_integer(ticker, 'positionFeeTime')
        intervalString = None
        if positionFeeTime is not None:
            interval = self.parse_to_int(positionFeeTime / 60 / 60)
            intervalString = str(interval) + 'h'
        return {
            'info': ticker,
            'symbol': symbol,
            'markPrice': markPrice,
            'indexPrice': indexPrice,
            'fundingRate': fundingRate,
            'fundingTimestamp': fundingTime,
            'fundingDatetime': self.iso8601(fundingTime),
            'timestamp': None,
            'datetime': None,
            'nextFundingRate': None,
            'nextFundingTimestamp': None,
            'nextFundingDatetime': None,
            'previousFundingRate': None,
            'previousFundingTimestamp': None,
            'previousFundingDatetime': None,
            'interval': intervalString,
        }

    def fetch_funding_rate(self, symbol: str, params={}) -> FundingRate:
        """
        fetch the current funding rate

        https://www.lbank.com/en-US/docs/contract.html#query-contract-market-list

        :param str symbol: unified market symbol
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: a `funding rate structure <https://docs.ccxt.com/?id=funding-rate-structure>`
        """
        self.load_markets()
        market = self.market(symbol)
        responseForSwap = self.fetch_funding_rates([market['symbol']], params)
        return self.safe_value(responseForSwap, market['symbol'])

    def fetch_funding_rates(self, symbols: Strings = None, params={}) -> FundingRates:
        """
        fetch the funding rate for multiple markets

        https://www.lbank.com/en-US/docs/contract.html#query-contract-market-list

        :param str[]|None symbols: list of unified market symbols
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: a dictionary of `funding rate structures <https://docs.ccxt.com/?id=funding-rates-structure>`, indexed by market symbols
        """
        self.load_markets()
        symbols = self.market_symbols(symbols)
        request: dict = {
            'productGroup': 'SwapU',
        }
        response = self.contractPublicGetCfdOpenApiV1PubMarketData(self.extend(request, params))
        # {
        #     "data": [
        #         {
        #             "symbol": "BTCUSDT",
        #             "highestPrice": "69495.5",
        #             "underlyingPrice": "68455.904",
        #             "lowestPrice": "68182.1",
        #             "openPrice": "68762.4",
        #             "positionFeeRate": "0.0001",
        #             "volume": "33534.2858",
        #             "markedPrice": "68434.1",
        #             "turnover": "1200636218.210558",
        #             "positionFeeTime": "28800",
        #             "lastPrice": "68427.3",
        #             "nextFeeTime": "1730736000000",
        #             "fundingRate": "0.0001",
        #         }
        #     ],
        #     "error_code": "0",
        #     "msg": "Success",
        #     "result": "true",
        #     "success": True,
        # }
        data = self.safe_list(response, 'data', [])
        return self.parse_funding_rates(data, symbols)

    def fetch_balance(self, params={}) -> Balances:
        """
        query for balance and get the amount of funds available for trading or funds locked in orders

        https://www.lbank.com/en-US/docs/index.html#asset-information
        https://www.lbank.com/en-US/docs/index.html#account-information
        https://www.lbank.com/en-US/docs/index.html#get-all-coins-information

        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: a `balance structure <https://docs.ccxt.com/?id=balance-structure>`
        """
        self.load_markets()
        options = self.safe_value(self.options, 'fetchBalance', {})
        defaultMethod = self.safe_string(options, 'method', 'spotPrivatePostSupplementUserInfo')
        method = self.safe_string(params, 'method', defaultMethod)
        response = None
        if method == 'spotPrivatePostSupplementUserInfoAccount':
            response = self.spotPrivatePostSupplementUserInfoAccount()
        elif method == 'spotPrivatePostUserInfo':
            response = self.spotPrivatePostUserInfo()
        else:
            response = self.spotPrivatePostSupplementUserInfo()
        #
        #    {
        #        "result": "true",
        #        "data": [
        #            {
        #                "usableAmt": "14.36",
        #                "assetAmt": "14.36",
        #                "networkList": [
        #                    {
        #                        "isDefault": False,
        #                        "withdrawFeeRate": "",
        #                        "name": "erc20",
        #                        "withdrawMin": 30,
        #                        "minLimit": 0.0001,
        #                        "minDeposit": 20,
        #                        "feeAssetCode": "usdt",
        #                        "withdrawFee": "30",
        #                        "type": 1,
        #                        "coin": "usdt",
        #                        "network": "eth"
        #                    },
        #                    ...
        #                ],
        #                "freezeAmt": "0",
        #                "coin": "ada"
        #            }
        #        ],
        #        "code": 0
        #    }
        #
        return self.parse_balance(response)

    def parse_trading_fee(self, fee: dict, market: Market = None) -> TradingFeeInterface:
        #
        #      {
        #          "symbol":"skt_usdt",
        #          "makerCommission":"0.10",
        #          "takerCommission":"0.10"
        #      }
        #
        marketId = self.safe_string(fee, 'symbol')
        symbol = self.safe_symbol(marketId)
        return {
            'info': fee,
            'symbol': symbol,
            'maker': self.safe_number(fee, 'makerCommission'),
            'taker': self.safe_number(fee, 'takerCommission'),
            'percentage': None,
            'tierBased': None,
        }

    def fetch_trading_fee(self, symbol: str, params={}) -> TradingFeeInterface:
        """
        fetch the trading fees for a market

        https://www.lbank.com/en-US/docs/index.html#transaction-fee-rate-query

        :param str symbol: unified market symbol
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: a `fee structure <https://docs.ccxt.com/?id=fee-structure>`
        """
        market = self.market(symbol)
        result = self.fetch_trading_fees(self.extend(params, {'category': market['id']}))
        return self.safe_dict(result, symbol)

    def fetch_trading_fees(self, params={}) -> TradingFees:
        """
        fetch the trading fees for multiple markets

        https://www.lbank.com/en-US/docs/index.html#transaction-fee-rate-query

        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: a dictionary of `fee structures <https://docs.ccxt.com/?id=fee-structure>` indexed by market symbols
        """
        self.load_markets()
        request: dict = {}
        response = self.spotPrivatePostSupplementCustomerTradeFee(self.extend(request, params))
        fees = self.safe_value(response, 'data', [])
        result: dict = {}
        for i in range(0, len(fees)):
            fee = self.parse_trading_fee(fees[i])
            symbol = fee['symbol']
            result[symbol] = fee
        return result

    def create_market_buy_order_with_cost(self, symbol: str, cost: float, params={}):
        """
        create a market buy order by providing the symbol and cost

        https://www.lbank.com/en-US/docs/index.html#place-order
        https://www.lbank.com/en-US/docs/index.html#place-an-order

        :param str symbol: unified symbol of the market to create an order in
        :param float cost: how much you want to trade in units of the quote currency
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: an `order structure <https://docs.ccxt.com/?id=order-structure>`
        """
        self.load_markets()
        market = self.market(symbol)
        if not market['spot']:
            raise NotSupported(self.id + ' createMarketBuyOrderWithCost() supports spot orders only')
        params['createMarketBuyOrderRequiresPrice'] = False
        return self.create_order(symbol, 'market', 'buy', cost, None, params)

    def create_order(self, symbol: str, type: OrderType, side: OrderSide, amount: float, price: Num = None, params={}):
        """
        create a trade order

        https://www.lbank.com/en-US/docs/index.html#place-order
        https://www.lbank.com/en-US/docs/index.html#place-an-order

        :param str symbol: unified symbol of the market to create an order in
        :param str type: 'market' or 'limit'
        :param str side: 'buy' or 'sell'
        :param float amount: how much of currency you want to trade in units of base currency
        :param float [price]: the price at which the order is to be fulfilled, in units of the quote currency, ignored in market orders
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: an `order structure <https://docs.ccxt.com/?id=order-structure>`
        """
        self.load_markets()
        market = self.market(symbol)
        clientOrderId = self.safe_string_2(params, 'custom_id', 'clientOrderId')
        postOnly = self.safe_bool(params, 'postOnly', False)
        timeInForce = self.safe_string_upper(params, 'timeInForce')
        params = self.omit(params, ['custom_id', 'clientOrderId', 'timeInForce', 'postOnly'])
        request: dict = {
            'symbol': market['id'],
        }
        ioc = (timeInForce == 'IOC')
        fok = (timeInForce == 'FOK')
        maker = (postOnly or (timeInForce == 'PO'))
        if (type == 'market') and (ioc or fok or maker):
            raise InvalidOrder(self.id + ' createOrder() does not allow market FOK, IOC, or postOnly orders. Only limit IOC, FOK, and postOnly orders are allowed')
        if type == 'limit':
            request['type'] = side
            request['price'] = self.price_to_precision(symbol, price)
            request['amount'] = self.amount_to_precision(symbol, amount)
            if ioc:
                request['type'] = side + '_' + 'ioc'
            elif fok:
                request['type'] = side + '_' + 'fok'
            elif maker:
                request['type'] = side + '_' + 'maker'
        elif type == 'market':
            if side == 'sell':
                request['type'] = side + '_' + 'market'
                request['amount'] = self.amount_to_precision(symbol, amount)
            elif side == 'buy':
                request['type'] = side + '_' + 'market'
                quoteAmount = None
                createMarketBuyOrderRequiresPrice = True
                createMarketBuyOrderRequiresPrice, params = self.handle_option_and_params(params, 'createOrder', 'createMarketBuyOrderRequiresPrice', True)
                cost = self.safe_number(params, 'cost')
                params = self.omit(params, 'cost')
                if cost is not None:
                    quoteAmount = self.cost_to_precision(symbol, cost)
                elif createMarketBuyOrderRequiresPrice:
                    if price is None:
                        raise InvalidOrder(self.id + ' createOrder() requires the price argument for market buy orders to calculate the total cost to spend(amount * price), alternatively set the createMarketBuyOrderRequiresPrice option or param to False and pass the cost to spend in the amount argument')
                    else:
                        amountString = self.number_to_string(amount)
                        priceString = self.number_to_string(price)
                        costRequest = Precise.string_mul(amountString, priceString)
                        quoteAmount = self.cost_to_precision(symbol, costRequest)
                else:
                    quoteAmount = self.cost_to_precision(symbol, amount)
                # market buys require filling the price param instead of the amount param, for market buys the price is treated cost by lbank
                request['price'] = quoteAmount
        if clientOrderId is not None:
            request['custom_id'] = clientOrderId
        options = self.safe_value(self.options, 'createOrder', {})
        defaultMethod = self.safe_string(options, 'method', 'spotPrivatePostSupplementCreateOrder')
        method = self.safe_string(params, 'method', defaultMethod)
        params = self.omit(params, 'method')
        response = None
        if method == 'spotPrivatePostCreateOrder':
            response = self.spotPrivatePostCreateOrder(self.extend(request, params))
        else:
            response = self.spotPrivatePostSupplementCreateOrder(self.extend(request, params))
        #
        #      {
        #          "result":true,
        #          "data":{
        #              "symbol":"doge_usdt",
        #              "order_id":"0cf8a3de-4597-4296-af45-be7abaa06b07"
        #              },
        #          "error_code":0,
        #          "ts":1648162321043
        #      }
        #
        result = self.safe_value(response, 'data', {})
        return self.safe_order({
            'id': self.safe_string(result, 'order_id'),
            'info': result,
        }, market)

    def parse_order_status(self, status: Str):
        statuses: dict = {
            '-1': 'canceled',  # canceled
            '0': 'open',  # not traded
            '1': 'open',  # partial deal
            '2': 'closed',  # complete deal
            '3': 'canceled',  # filled partially and cancelled
            '4': 'closed',  # disposal processing
        }
        return self.safe_string(statuses, status, status)

    def parse_order(self, order: dict, market: Market = None) -> Order:
        #
        # fetchOrderSupplement(private)
        #
        #      {
        #          "cummulativeQuoteQty":0,
        #          "symbol":"doge_usdt",
        #          "executedQty":0,
        #          "orderId":"53d2d53e-70fb-4398-b722-f48571a5f61e",
        #          "origQty":1E+2,
        #          "price":0.05,
        #          "clientOrderId":null,
        #          "origQuoteOrderQty":5,
        #          "updateTime":1648163406000,
        #          "time":1648163139387,
        #          "type":"buy_maker",
        #          "status":-1
        #      }
        #
        #
        # fetchOrderDefault(private)
        #
        #      {
        #          "symbol":"shib_usdt",
        #          "amount":1,
        #          "create_time":1649367863356,
        #          "price":0.0000246103,
        #          "avg_price":0.00002466180000000104,
        #          "type":"buy_market",
        #          "order_id":"abe8b92d-86d9-4d6d-b71e-d14f5fb53ddf",
        #          "custom_id": "007",                                 # field only present if user creates it at order time
        #          "deal_amount":40548.54065802,
        #          "status":2
        #      }
        #
        # fetchOpenOrders(private)
        #
        #      {
        #          "cummulativeQuoteQty":0,
        #          "symbol":"doge_usdt",
        #          "executedQty":0,
        #          "orderId":"73878edf-008d-4e4c-8041-df1f1b2cd8bb",
        #          "origQty":100,
        #          "price":0.05,
        #          "origQuoteOrderQty":5,
        #          "updateTime":1648501762000,
        #          "time":1648501762353,
        #          "type":"buy",
        #          "status":0
        #      }
        #
        # fetchOrders(private)
        #
        #      {
        #          "cummulativeQuoteQty":0,
        #          "symbol":"doge_usdt",
        #          "executedQty":0,
        #          "orderId":"2cadc7cc-b5f6-486b-a5b4-d6ac49a9c186",
        #          "origQty":100,
        #          "price":0.05,
        #          "origQuoteOrderQty":5,
        #          "updateTime":1648501384000,
        #          "time":1648501363889,
        #          "type":"buy",
        #          "status":-1
        #      }
        #
        # cancelOrder
        #
        #    {
        #        "executedQty":0.0,
        #        "price":0.05,
        #        "origQty":100.0,
        #        "tradeType":"buy",
        #        "status":0
        #    }
        #
        # cancelAllOrders
        #
        #    {
        #        "executedQty":0.00000000000000000000,
        #        "orderId":"293ef71b-3e67-4962-af93-aa06990a045f",
        #        "price":0.05000000000000000000,
        #        "origQty":100.00000000000000000000,
        #        "tradeType":"buy",
        #        "status":0
        #    }
        #
        id = self.safe_string_2(order, 'orderId', 'order_id')
        clientOrderId = self.safe_string_2(order, 'clientOrderId', 'custom_id')
        timestamp = self.safe_integer_2(order, 'time', 'create_time')
        rawStatus = self.safe_string(order, 'status')
        marketId = self.safe_string(order, 'symbol')
        market = self.safe_market(marketId, market)
        timeInForce = None
        postOnly = False
        type = 'limit'
        rawType = self.safe_string_2(order, 'type', 'tradeType')  # buy, sell, buy_market, sell_market, buy_maker,sell_maker,buy_ioc,sell_ioc, buy_fok, sell_fok
        parts = rawType.split('_')
        side = self.safe_string(parts, 0)
        typePart = self.safe_string(parts, 1)  # market, maker, ioc, fok or None(limit)
        if typePart == 'market':
            type = 'market'
        if typePart == 'maker':
            postOnly = True
            timeInForce = 'PO'
        if typePart == 'ioc':
            timeInForce = 'IOC'
        if typePart == 'fok':
            timeInForce = 'FOK'
        price = self.safe_string(order, 'price')
        costString = self.safe_string(order, 'cummulativeQuoteQty')
        amountString = None
        if rawType != 'buy_market':
            amountString = self.safe_string_2(order, 'origQty', 'amount')
        filledString = self.safe_string_2(order, 'executedQty', 'deal_amount')
        return self.safe_order({
            'id': id,
            'clientOrderId': clientOrderId,
            'datetime': self.iso8601(timestamp),
            'timestamp': timestamp,
            'lastTradeTimestamp': None,
            'status': self.parse_order_status(rawStatus),
            'symbol': market['symbol'],
            'type': type,
            'timeInForce': timeInForce,
            'postOnly': postOnly,
            'side': side,
            'price': price,
            'triggerPrice': None,
            'cost': costString,
            'amount': amountString,
            'filled': filledString,
            'remaining': None,
            'trades': None,
            'fee': None,
            'info': order,
            'average': None,
        }, market)

    def fetch_order(self, id: str, symbol: Str = None, params={}):
        """
        fetches information on an order made by the user

        https://www.lbank.com/en-US/docs/index.html#query-order
        https://www.lbank.com/en-US/docs/index.html#query-order-new

        :param str id: order id
        :param str symbol: unified symbol of the market the order was made in
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: An `order structure <https://docs.ccxt.com/?id=order-structure>`
        """
        self.load_markets()
        method = self.safe_string(params, 'method')
        if method is None:
            options = self.safe_value(self.options, 'fetchOrder', {})
            method = self.safe_string(options, 'method', 'fetchOrderSupplement')
        if method == 'fetchOrderSupplement':
            return self.fetch_order_supplement(id, symbol, params)
        return self.fetch_order_default(id, symbol, params)

    def fetch_order_supplement(self, id: str, symbol: Str = None, params={}):
        if symbol is None:
            raise ArgumentsRequired(self.id + ' fetchOrder() requires a symbol argument')
        self.load_markets()
        market = self.market(symbol)
        request: dict = {
            'symbol': market['id'],
            'orderId': id,
        }
        response = self.spotPrivatePostSupplementOrdersInfo(self.extend(request, params))
        #
        #      {
        #          "result":true,
        #          "data":{
        #              "cummulativeQuoteQty":0,
        #              "symbol":"doge_usdt",
        #              "executedQty":0,
        #              "orderId":"53d2d53e-70fb-4398-b722-f48571a5f61e",
        #              "origQty":1E+2,
        #              "price":0.05,
        #              "clientOrderId":null,
        #              "origQuoteOrderQty":5,
        #              "updateTime":1648163406000,
        #              "time":1648163139387,
        #              "type":"buy_maker",
        #              "status":-1
        #              },
        #          "error_code":0,
        #          "ts":1648164471827
        #      }
        #
        result = self.safe_dict(response, 'data', {})
        return self.parse_order(result)

    def fetch_order_default(self, id: str, symbol: Str = None, params={}):
        # Id can be a list of ids delimited by a comma
        if symbol is None:
            raise ArgumentsRequired(self.id + ' fetchOrder() requires a symbol argument')
        self.load_markets()
        market = self.market(symbol)
        request: dict = {
            'symbol': market['id'],
            'order_id': id,
        }
        response = self.spotPrivatePostOrdersInfo(self.extend(request, params))
        #
        #      {
        #          "result":true,
        #          "data":[
        #              {
        #                  "symbol":"doge_usdt",
        #                  "amount":18,
        #                  "create_time":1647455223186,
        #                  "price":0,
        #                  "avg_price":0.113344,
        #                  "type":"sell_market",
        #                  "order_id":"d4ca1ddd-40d9-42c1-9717-5de435865bec",
        #                  "deal_amount":18,
        #                  "status":2
        #                }
        #            ],
        #          "error_code":0,
        #          "ts":1647455270776
        #      }
        #
        result = self.safe_value(response, 'data', [])
        numOrders = len(result)
        if numOrders == 1:
            return self.parse_order(result[0])
        else:
            # parsedOrders = []
            # for i in range(0, numOrders):
            #     parsedOrder = self.parse_order(result[i])
            #     parsedOrders.append(parsedOrder)
            # }
            # return parsedOrders
            raise BadRequest(self.id + ' fetchOrder() can only fetch one order at a time')

    def fetch_my_trades(self, symbol: Str = None, since: Int = None, limit: Int = None, params={}):
        """
        fetch all trades made by the user

        https://www.lbank.com/en-US/docs/index.html#past-transaction-details

        :param str symbol: unified market symbol
        :param int [since]: the earliest time in ms to fetch trades for
        :param int [limit]: the maximum number of trade structures to retrieve
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns Trade[]: a list of `trade structures <https://docs.ccxt.com/?id=trade-structure>`
        """
        if symbol is None:
            raise ArgumentsRequired(self.id + ' fetchMyTrades() requires a symbol argument')
        self.load_markets()
        market = self.market(symbol)
        since = self.safe_value(params, 'start_date', since)
        params = self.omit(params, 'start_date')
        request: dict = {
            'symbol': market['id'],
            # 'start_date' Start time yyyy-mm-dd, the maximum is today, the default is yesterday
            # 'end_date' Finish time yyyy-mm-dd, the maximum is today, the default is today
            # 'The start': and end date of the query window is up to 2 days
            # 'from' Initial transaction number inquiring
            # 'direct' inquire direction,The default is the 'next' which is the positive sequence of dealing time，the 'prev' is inverted order of dealing time
            # 'size' Query the number of defaults to 100
        }
        if limit is not None:
            request['size'] = limit
        if since is not None:
            request['start_date'] = self.ymd(since, '-')  # max query 2 days ago
            request['end_date'] = self.ymd(since + 86400000, '-')  # will cover 2 days
        response = self.spotPrivatePostTransactionHistory(self.extend(request, params))
        #
        #      {
        #          "result":true,
        #          "data":[
        #              {
        #                  "orderUuid":"38b4e7a4-14f6-45fd-aba1-1a37024124a0",
        #                  "tradeFeeRate":0.0010000000,
        #                  "dealTime":1648500944496,
        #                  "dealQuantity":30.00000000000000000000,
        #                  "tradeFee":0.00453300000000000000,
        #                  "txUuid":"11f3850cc6214ea3b495adad3a032794",
        #                  "dealPrice":0.15111300000000000000,
        #                  "dealVolumePrice":4.53339000000000000000,
        #                  "tradeType":"sell_market"
        #              }
        #          ],
        #          "error_code":0,
        #          "ts":1648509742164
        #      }
        #
        trades = self.safe_list(response, 'data', [])
        return self.parse_trades(trades, market, since, limit)

    def fetch_orders(self, symbol: Str = None, since: Int = None, limit: Int = None, params={}) -> List[Order]:
        """
        fetches information on multiple orders made by the user

        https://www.lbank.com/en-US/docs/index.html#query-all-orders

        :param str symbol: unified market symbol of the market orders were made in
        :param int [since]: the earliest time in ms to fetch orders for
        :param int [limit]: the maximum number of order structures to retrieve
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns Order[]: a list of `order structures <https://docs.ccxt.com/?id=order-structure>`
        """
        # default query is for canceled and completely filled orders
        # does not return open orders unless specified explicitly
        if symbol is None:
            raise ArgumentsRequired(self.id + ' fetchOrders() requires a symbol argument')
        self.load_markets()
        market = self.market(symbol)
        if limit is None:
            limit = 100
        request: dict = {
            'symbol': market['id'],
            'current_page': 1,
            'page_length': limit,
            # 'status'  -1: Cancelled, 0: Unfilled, 1: Partially filled, 2: Completely filled, 3: Partially filled and cancelled, 4: Cancellation is being processed
        }
        response = self.spotPrivatePostSupplementOrdersInfoHistory(self.extend(request, params))
        #
        #      {
        #          "result":true,
        #          "data":{
        #              "total":1,
        #              "page_length":100,
        #              "orders":[
        #                  {
        #                      "cummulativeQuoteQty":0,
        #                      "symbol":"doge_usdt",
        #                      "executedQty":0,
        #                      "orderId":"2cadc7cc-b5f6-486b-a5b4-d6ac49a9c186",
        #                      "origQty":100,
        #                      "price":0.05,
        #                      "origQuoteOrderQty":5,
        #                      "updateTime":1648501384000,
        #                      "time":1648501363889,
        #                      "type":"buy",
        #                      "status":-1
        #                  }, ...
        #              ],
        #              "current_page":1
        #          },
        #          "error_code":0,
        #          "ts":1648505706348
        #      }
        #
        result = self.safe_value(response, 'data', {})
        orders = self.safe_list(result, 'orders', [])
        return self.parse_orders(orders, market, since, limit)

    def fetch_open_orders(self, symbol: Str = None, since: Int = None, limit: Int = None, params={}) -> List[Order]:
        """
        fetch all unfilled currently open orders

        https://www.lbank.com/en-US/docs/index.html#current-pending-order

        :param str symbol: unified market symbol
        :param int [since]: the earliest time in ms to fetch open orders for
        :param int [limit]: the maximum number of open order structures to retrieve
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns Order[]: a list of `order structures <https://docs.ccxt.com/?id=order-structure>`
        """
        if symbol is None:
            raise ArgumentsRequired(self.id + ' fetchOpenOrders() requires a symbol argument')
        self.load_markets()
        market = self.market(symbol)
        if limit is None:
            limit = 100
        request: dict = {
            'symbol': market['id'],
            'current_page': 1,
            'page_length': limit,
        }
        response = self.spotPrivatePostSupplementOrdersInfoNoDeal(self.extend(request, params))
        #
        #      {
        #          "result":true,
        #          "data":{
        #              "total":1,
        #              "page_length":100,
        #              "orders":[
        #                  {
        #                      "cummulativeQuoteQty":0,
        #                      "symbol":"doge_usdt",
        #                      "executedQty":0,
        #                      "orderId":"73878edf-008d-4e4c-8041-df1f1b2cd8bb",
        #                      "origQty":100,
        #                      "price":0.05,
        #                      "origQuoteOrderQty":5,
        #                      "updateTime":1648501762000,
        #                      "time":1648501762353,
        #                      "type":"buy",
        #                      "status":0
        #                  }, ...
        #             ],
        #             "current_page":1
        #         },
        #         "error_code":0,
        #         "ts":1648506110196
        #     }
        #
        result = self.safe_value(response, 'data', {})
        orders = self.safe_list(result, 'orders', [])
        return self.parse_orders(orders, market, since, limit)

    def cancel_order(self, id: str, symbol: Str = None, params={}):
        """
        cancels an open order

        https://www.lbank.com/en-US/docs/index.html#cancel-order-new

        :param str id: order id
        :param str symbol: unified symbol of the market the order was made in
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: An `order structure <https://docs.ccxt.com/?id=order-structure>`
        """
        if symbol is None:
            raise ArgumentsRequired(self.id + ' cancelOrder() requires a symbol argument')
        self.load_markets()
        clientOrderId = self.safe_string_2(params, 'origClientOrderId', 'clientOrderId')
        params = self.omit(params, ['origClientOrderId', 'clientOrderId'])
        market = self.market(symbol)
        request: dict = {
            'symbol': market['id'],
            'orderId': id,
        }
        if clientOrderId is not None:
            request['origClientOrderId'] = clientOrderId
        response = self.spotPrivatePostSupplementCancelOrder(self.extend(request, params))
        #
        #   {
        #      "result":true,
        #      "data":{
        #          "executedQty":0.0,
        #          "price":0.05,
        #          "origQty":100.0,
        #          "tradeType":"buy",
        #          "status":0
        #      },
        #      "error_code":0,
        #      "ts":1648501286196
        #  }
        data = self.safe_dict(response, 'data', {})
        return self.parse_order(data)

    def cancel_all_orders(self, symbol: Str = None, params={}):
        """
        cancel all open orders in a market

        https://www.lbank.com/en-US/docs/index.html#cancel-all-pending-orders-for-a-single-trading-pair

        :param str symbol: unified market symbol of the market to cancel orders in
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict[]: a list of `order structures <https://docs.ccxt.com/?id=order-structure>`
        """
        if symbol is None:
            raise ArgumentsRequired(self.id + ' cancelAllOrders() requires a symbol argument')
        self.load_markets()
        market = self.market(symbol)
        request: dict = {
            'symbol': market['id'],
        }
        response = self.spotPrivatePostSupplementCancelOrderBySymbol(self.extend(request, params))
        #
        #      {
        #          "result":"true",
        #          "data":[
        #              {
        #                  "executedQty":0.00000000000000000000,
        #                  "orderId":"293ef71b-3e67-4962-af93-aa06990a045f",
        #                  "price":0.05000000000000000000,
        #                  "origQty":100.00000000000000000000,
        #                  "tradeType":"buy",
        #                  "status":0
        #              },
        #          ],
        #          "error_code":0,
        #          "ts":1648506641468
        #      }
        #
        data = self.safe_list(response, 'data', [])
        return self.parse_orders(data)

    def get_network_code_for_currency(self, currencyCode, params):
        defaultNetworks = self.safe_value(self.options, 'defaultNetworks')
        defaultNetwork = self.safe_string_upper(defaultNetworks, currencyCode)
        networks = self.safe_value(self.options, 'networks', {})
        network = self.safe_string_upper(params, 'network', defaultNetwork)  # self line allows the user to specify either ERC20 or ETH
        network = self.safe_string(networks, network, network)  # handle ERC20>ETH alias
        return network

    def fetch_deposit_address(self, code: str, params={}) -> DepositAddress:
        """
        fetch the deposit address for a currency associated with self account

        https://www.lbank.com/en-US/docs/index.html#get-deposit-address
        https://www.lbank.com/en-US/docs/index.html#the-user-obtains-the-deposit-address

        :param str code: unified currency code
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: an `address structure <https://docs.ccxt.com/?id=address-structure>`
        """
        self.load_markets()
        options = self.safe_value(self.options, 'fetchDepositAddress', {})
        defaultMethod = self.safe_string(options, 'method', 'fetchDepositAddressDefault')
        method = self.safe_string(params, 'method', defaultMethod)
        params = self.omit(params, 'method')
        response = None
        if method == 'fetchDepositAddressSupplement':
            response = self.fetch_deposit_address_supplement(code, params)
        else:
            response = self.fetch_deposit_address_default(code, params)
        return response

    def fetch_deposit_address_default(self, code: str, params={}) -> DepositAddress:
        self.load_markets()
        currency = self.currency(code)
        request: dict = {
            'assetCode': currency['id'],
        }
        network = self.get_network_code_for_currency(code, params)
        if network is not None:
            request['netWork'] = network  # ... yes, really lol
            params = self.omit(params, 'network')
        response = self.spotPrivatePostGetDepositAddress(self.extend(request, params))
        #
        #      {
        #          "result":true,
        #          "data":{
        #              "assetCode":"usdt",
        #              "address":"0xc85689d37ca650bf2f2161364cdedee21eb6ca53",
        #              "memo":null,
        #              "netWork":"bep20(bsc)"
        #              },
        #          "error_code":0,
        #          "ts":1648075865103
        #      }
        #
        result = self.safe_value(response, 'data')
        address = self.safe_string(result, 'address')
        tag = self.safe_string(result, 'memo')
        return {
            'info': response,
            'currency': code,
            'network': self.network_id_to_code(self.safe_string(result, 'netWork')),
            'address': address,
            'tag': tag,
        }

    def fetch_deposit_address_supplement(self, code: str, params={}) -> DepositAddress:
        # returns the address for whatever the default network is...
        self.load_markets()
        currency = self.currency(code)
        request: dict = {
            'coin': currency['id'],
        }
        networks = self.safe_value(self.options, 'networks')
        network = self.safe_string_upper(params, 'network')
        network = self.safe_string(networks, network, network)
        if network is not None:
            request['networkName'] = network
            params = self.omit(params, 'network')
        response = self.spotPrivatePostSupplementGetDepositAddress(self.extend(request, params))
        #
        #      {
        #          "result":true,
        #          "data":{
        #              "address":"TDxtabCC8iQwaxUUrPcE4WL2jArGAfvQ5A",
        #              "memo":null,
        #              "coin":"usdt"
        #              },
        #          "error_code":0,
        #          "ts":1648073818880
        #     }
        #
        result = self.safe_value(response, 'data')
        address = self.safe_string(result, 'address')
        tag = self.safe_string(result, 'memo')
        return {
            'info': response,
            'currency': code,
            'network': None,
            'address': address,
            'tag': tag,
        }

    def withdraw(self, code: str, amount: float, address: str, tag: Str = None, params={}) -> Transaction:
        """
        make a withdrawal

        https://www.lbank.com/en-US/docs/index.html#withdrawal

        :param str code: unified currency code
        :param float amount: the amount to withdraw
        :param str address: the address to withdraw to
        :param str tag:
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: a `transaction structure <https://docs.ccxt.com/?id=transaction-structure>`
        """
        tag, params = self.handle_withdraw_tag_and_params(tag, params)
        self.check_address(address)
        self.load_markets()
        fee = self.safe_string(params, 'fee')
        params = self.omit(params, 'fee')
        # The relevant coin network fee can be found by calling fetchDepositWithdrawFees(), note: if no network param is supplied then the default network will be used, self can also be found in fetchDepositWithdrawFees().
        self.check_required_argument('withdraw', fee, 'fee')
        currency = self.currency(code)
        request: dict = {
            'address': address,
            'coin': currency['id'],
            'amount': amount,
            'fee': fee,  # the correct coin-network fee must be supplied, which can be found by calling fetchDepositWithdrawFees(private)
            # 'networkName': defaults to the defaultNetwork of the coin which can be found in the /supplement/user_info endpoint
            # 'memo': memo: memo word of bts and dct
            # 'mark': Withdrawal Notes
            # 'name': Remarks of the address. After hasattr(self, filling) parameter, it will be added to the withdrawal address book of the currency.
            # 'withdrawOrderId': withdrawOrderId
            # 'type': type=1 is for intra-site transfer
        }
        if tag is not None:
            request['memo'] = tag
        network = self.safe_string_upper_2(params, 'network', 'networkName')
        params = self.omit(params, ['network', 'networkName'])
        networks = self.safe_value(self.options, 'networks')
        networkId = self.safe_string(networks, network, network)
        if networkId is not None:
            request['networkName'] = networkId
        response = self.spotPrivatePostSupplementWithdraw(self.extend(request, params))
        #
        #      {
        #          "result":true,
        #          "data": {
        #              "fee":10.00000000000000000000,
        #              "withdrawId":1900377
        #              },
        #          "error_code":0,
        #          "ts":1648992501414
        #      }
        #
        result = self.safe_value(response, 'data', {})
        return {
            'info': result,
            'id': self.safe_string(result, 'withdrawId'),
        }

    def parse_transaction_status(self, status, type):
        statuses: dict = {
            'deposit': {
                '1': 'pending',
                '2': 'ok',
                '3': 'failed',
                '4': 'canceled',
                '5': 'transfer',
            },
            'withdrawal': {
                '1': 'pending',
                '2': 'canceled',
                '3': 'failed',
                '4': 'ok',
            },
        }
        return self.safe_string(self.safe_value(statuses, type, {}), status, status)

    def parse_transaction(self, transaction: dict, currency: Currency = None) -> Transaction:
        #
        # fetchDeposits(private)
        #
        #      {
        #          "insertTime":1649012310000,
        #          "amount":9.00000000000000000000,
        #          "address":"TYASr5UV6HEcXatwdFQfmLVUqQQQMUxHLS",
        #          "networkName":"trc20",
        #          "txId":"081e4e9351dd0274922168da5f2d14ea6c495b1c3b440244f4a6dd9fe196bf2b",
        #          "coin":"usdt",
        #          "status":"2"
        #      }
        #
        #
        # fetchWithdrawals(private)
        #
        #      {
        #          "amount":2.00000000000000000000,
        #          "address":"TBjrW5JHDyPZjFc5nrRMhRWUDaJmhGhmD6",
        #          "fee":1.00000000000000000000,
        #          "networkName":"trc20",
        #          "coid":"usdt",
        #          "transferType":"数字资产提现",
        #          "txId":"47eeee2763ad49b8817524dacfa7d092fb58f8b0ab7e5d25473314df1a793c3d",
        #          "id":1902194,
        #          "applyTime":1649014002000,
        #          "status":"4"
        #      }
        #
        id = self.safe_string(transaction, 'id')
        type = None
        if id is None:
            type = 'deposit'
        else:
            type = 'withdrawal'
        txid = self.safe_string(transaction, 'txId')
        timestamp = self.safe_integer_2(transaction, 'insertTime', 'applyTime')
        address = self.safe_string(transaction, 'address')
        addressFrom = None
        addressTo = None
        if type == 'deposit':
            addressFrom = address
        else:
            addressTo = address
        amount = self.safe_number(transaction, 'amount')
        currencyId = self.safe_string_2(transaction, 'coin', 'coid')
        code = self.safe_currency_code(currencyId, currency)
        status = self.parse_transaction_status(self.safe_string(transaction, 'status'), type)
        fee = None
        feeCost = self.safe_number(transaction, 'fee')
        if feeCost is not None:
            fee = {
                'cost': feeCost,
                'currency': code,
            }
        return {
            'info': transaction,
            'id': id,
            'txid': txid,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'network': self.network_id_to_code(self.safe_string(transaction, 'networkName')),
            'address': address,
            'addressTo': addressTo,
            'addressFrom': addressFrom,
            'tag': None,
            'tagTo': None,
            'tagFrom': None,
            'type': type,
            'amount': amount,
            'currency': code,
            'status': status,
            'updated': None,
            'comment': None,
            'internal': (status == 'transfer'),
            'fee': fee,
        }

    def fetch_deposits(self, code: Str = None, since: Int = None, limit: Int = None, params={}) -> List[Transaction]:
        """
        fetch all deposits made to an account

        https://www.lbank.com/en-US/docs/index.html#get-recharge-history

        :param str code: unified currency code
        :param int [since]: the earliest time in ms to fetch deposits for
        :param int [limit]: the maximum number of deposits structures to retrieve
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict[]: a list of `transaction structures <https://docs.ccxt.com/?id=transaction-structure>`
        """
        self.load_markets()
        request: dict = {
            # 'status': Recharge status: ("1","Applying"),("2","Recharge successful"),("3","Recharge failed"),("4","Already Cancel"),("5", "Transfer")
            # 'endTime': end time, timestamp in milliseconds, default now
        }
        currency = None
        if code is not None:
            currency = self.currency(code)
            request['coin'] = currency['id']
        if since is not None:
            request['startTime'] = since
        response = self.spotPrivatePostSupplementDepositHistory(self.extend(request, params))
        #
        #      {
        #          "result":true,
        #          "data": {
        #              "total":1,
        #              "depositOrders": [
        #                  {
        #                      "insertTime":1649012310000,
        #                      "amount":9.00000000000000000000,
        #                      "address":"TYASr5UV6HEcXatwdFQfmLVUqQQQMUxHLS",
        #                      "networkName":"trc20",
        #                      "txId":"081e4e9351dd0274922168da5f2d14ea6c495b1c3b440244f4a6dd9fe196bf2b",
        #                      "coin":"usdt",
        #                      "status":"2"
        #                  },
        #              ],
        #              "page_length":20,
        #              "current_page":1
        #          },
        #          "error_code":0,
        #          "ts":1649719721758
        #      }
        #
        data = self.safe_value(response, 'data', {})
        deposits = self.safe_list(data, 'depositOrders', [])
        return self.parse_transactions(deposits, currency, since, limit)

    def fetch_withdrawals(self, code: Str = None, since: Int = None, limit: Int = None, params={}) -> List[Transaction]:
        """
        fetch all withdrawals made from an account

        https://www.lbank.com/en-US/docs/index.html#get-withdrawal-history

        :param str code: unified currency code
        :param int [since]: the earliest time in ms to fetch withdrawals for
        :param int [limit]: the maximum number of withdrawals structures to retrieve
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict[]: a list of `transaction structures <https://docs.ccxt.com/?id=transaction-structure>`
        """
        self.load_markets()
        request: dict = {
            # 'status': Recharge status: ("1","Applying"),("2","Recharge successful"),("3","Recharge failed"),("4","Already Cancel"),("5", "Transfer")
            # 'endTime': end time, timestamp in milliseconds, default now
            # 'withdrawOrderId': Custom withdrawal id
        }
        currency = None
        if code is not None:
            currency = self.currency(code)
            request['coin'] = currency['id']
        if since is not None:
            request['startTime'] = since
        response = self.spotPrivatePostSupplementWithdraws(self.extend(request, params))
        #
        #      {
        #          "result":true,
        #          "data": {
        #              "total":1,
        #              "withdraws": [
        #                  {
        #                      "amount":2.00000000000000000000,
        #                      "address":"TBjrW5JHDyPZjFc5nrRMhRWUDaJmhGhmD6",
        #                      "fee":1.00000000000000000000,
        #                      "networkName":"trc20",
        #                      "coid":"usdt",
        #                      "transferType":"数字资产提现",
        #                      "txId":"47eeee2763ad49b8817524dacfa7d092fb58f8b0ab7e5d25473314df1a793c3d",
        #                      "id":1902194,
        #                      "applyTime":1649014002000,
        #                      "status":"4"
        #                  },
        #              ],
        #              "page_length":20,
        #              "current_page":1
        #          },
        #          "error_code":0,
        #          "ts":1649720362362
        #      }
        #
        data = self.safe_value(response, 'data', {})
        withdraws = self.safe_list(data, 'withdraws', [])
        return self.parse_transactions(withdraws, currency, since, limit)

    def fetch_transaction_fees(self, codes: Strings = None, params={}):
        """
 @deprecated
        please use fetchDepositWithdrawFees instead
        :param str[]|None codes: not used by lbank fetchTransactionFees()
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: a list of `fee structures <https://docs.ccxt.com/?id=fee-structure>`
        """
        # private only returns information for currencies with non-zero balance
        self.load_markets()
        isAuthorized = self.check_required_credentials(False)
        result = None
        if isAuthorized is True:
            options = self.safe_value(self.options, 'fetchTransactionFees', {})
            defaultMethod = self.safe_string(options, 'method', 'fetchPrivateTransactionFees')
            method = self.safe_string(params, 'method', defaultMethod)
            params = self.omit(params, 'method')
            if method == 'fetchPublicTransactionFees':
                result = self.fetch_public_transaction_fees(params)
            else:
                result = self.fetch_private_transaction_fees(params)
        else:
            result = self.fetch_public_transaction_fees(params)
        return result

    def fetch_private_transaction_fees(self, params={}):
        # complete response
        # incl. for coins which None in public method
        self.load_markets()
        response = self.spotPrivatePostSupplementUserInfo()
        #
        #    {
        #        "result": "true",
        #        "data": [
        #            {
        #                "usableAmt": "14.36",
        #                "assetAmt": "14.36",
        #                "networkList": [
        #                    {
        #                        "isDefault": False,
        #                        "withdrawFeeRate": "",
        #                        "name": "erc20",
        #                        "withdrawMin": 30,
        #                        "minLimit": 0.0001,
        #                        "minDeposit": 20,
        #                        "feeAssetCode": "usdt",
        #                        "withdrawFee": "30",
        #                        "type": 1,
        #                        "coin": "usdt",
        #                        "network": "eth"
        #                    },
        #                    ...
        #                ],
        #                "freezeAmt": "0",
        #                "coin": "ada"
        #            }
        #        ],
        #        "code": 0
        #    }
        #
        result = self.safe_value(response, 'data', [])
        withdrawFees: dict = {}
        for i in range(0, len(result)):
            entry = result[i]
            currencyId = self.safe_string(entry, 'coin')
            code = self.safe_currency_code(currencyId)
            networkList = self.safe_value(entry, 'networkList', [])
            withdrawFees[code] = {}
            for j in range(0, len(networkList)):
                networkEntry = networkList[j]
                fee = self.safe_number(networkEntry, 'withdrawFee')
                if fee is not None:
                    networkCode = self.network_id_to_code(self.safe_string(networkEntry, 'name'))
                    withdrawFees[code][networkCode] = fee
        return {
            'withdraw': withdrawFees,
            'deposit': {},
            'info': response,
        }

    def fetch_public_transaction_fees(self, params={}):
        # extremely incomplete response
        # vast majority fees None
        self.load_markets()
        code = self.safe_string_2(params, 'coin', 'assetCode')
        params = self.omit(params, ['coin', 'assetCode'])
        request: dict = {}
        if code is not None:
            currency = self.currency(code)
            request['assetCode'] = currency['id']
        response = self.spotPublicGetWithdrawConfigs(self.extend(request, params))
        #
        #    {
        #        "result": "true",
        #        "data": [
        #          {
        #            "amountScale": "4",
        #            "chain": "heco",
        #            "assetCode": "lbk",
        #            "min": "200",
        #            "transferAmtScale": "4",
        #            "canWithDraw": True,
        #            "fee": "100",
        #            "minTransfer": "0.0001",
        #            "type": "1"
        #          },
        #          ...
        #        ],
        #        "error_code": "0",
        #        "ts": "1663364435973"
        #    }
        #
        result = self.safe_value(response, 'data', [])
        withdrawFees: dict = {}
        for i in range(0, len(result)):
            item = result[i]
            canWithdraw = self.safe_value(item, 'canWithDraw')
            if canWithdraw == 'true':
                currencyId = self.safe_string(item, 'assetCode')
                codeInner = self.safe_currency_code(currencyId)
                network = self.network_id_to_code(self.safe_string(item, 'chain'))
                if network is None:
                    network = codeInner
                fee = self.safe_string(item, 'fee')
                if withdrawFees[codeInner] is None:
                    withdrawFees[codeInner] = {}
                withdrawFees[codeInner][network] = self.parse_number(fee)
        return {
            'withdraw': withdrawFees,
            'deposit': {},
            'info': response,
        }

    def fetch_deposit_withdraw_fees(self, codes: Strings = None, params={}):
        """
        when using private endpoint, only returns information for currencies with non-zero balance, use public method by specifying self.options['fetchDepositWithdrawFees']['method'] = 'fetchPublicDepositWithdrawFees'

        https://www.lbank.com/en-US/docs/index.html#get-all-coins-information
        https://www.lbank.com/en-US/docs/index.html#withdrawal-configurations

        :param str[] [codes]: array of unified currency codes
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: a list of `fee structures <https://docs.ccxt.com/?id=fee-structure>`
        """
        self.load_markets()
        isAuthorized = self.check_required_credentials(False)
        response = None
        if isAuthorized is True:
            options = self.safe_value(self.options, 'fetchDepositWithdrawFees', {})
            defaultMethod = self.safe_string(options, 'method', 'fetchPrivateDepositWithdrawFees')
            method = self.safe_string(params, 'method', defaultMethod)
            params = self.omit(params, 'method')
            if method == 'fetchPublicDepositWithdrawFees':
                response = self.fetch_public_deposit_withdraw_fees(codes, params)
            else:
                response = self.fetch_private_deposit_withdraw_fees(codes, params)
        else:
            response = self.fetch_public_deposit_withdraw_fees(codes, params)
        return response

    def fetch_private_deposit_withdraw_fees(self, codes=None, params={}):
        # complete response
        # incl. for coins which None in public method
        self.load_markets()
        response = self.spotPrivatePostSupplementUserInfo(params)
        #
        #    {
        #        "result": "true",
        #        "data": [
        #            {
        #                "usableAmt": "14.36",
        #                "assetAmt": "14.36",
        #                "networkList": [
        #                    {
        #                        "isDefault": False,
        #                        "withdrawFeeRate": "",
        #                        "name": "erc20",
        #                        "withdrawMin": 30,
        #                        "minLimit": 0.0001,
        #                        "minDeposit": 20,
        #                        "feeAssetCode": "usdt",
        #                        "withdrawFee": "30",
        #                        "type": 1,
        #                        "coin": "usdt",
        #                        "network": "eth"
        #                    },
        #                    ...
        #                ],
        #                "freezeAmt": "0",
        #                "coin": "ada"
        #            }
        #        ],
        #        "code": 0
        #    }
        #
        data = self.safe_list(response, 'data', [])
        return self.parse_deposit_withdraw_fees(data, codes, 'coin')

    def fetch_public_deposit_withdraw_fees(self, codes=None, params={}):
        # extremely incomplete response
        # vast majority fees None
        self.load_markets()
        request: dict = {}
        response = self.spotPublicGetWithdrawConfigs(self.extend(request, params))
        #
        #    {
        #        "result": "true",
        #        "data": [
        #            {
        #                "amountScale": "4",
        #                "chain": "heco",
        #                "assetCode": "lbk",
        #                "min": "200",
        #                "transferAmtScale": "4",
        #                "canWithDraw": True,
        #                "fee": "100",
        #                "minTransfer": "0.0001",
        #                "type": "1"
        #            },
        #            ...
        #        ],
        #        "error_code": "0",
        #        "ts": "1663364435973"
        #    }
        #
        data = self.safe_value(response, 'data', [])
        return self.parse_public_deposit_withdraw_fees(data, codes)

    def parse_public_deposit_withdraw_fees(self, response, codes=None):
        #
        #    [
        #        {
        #            "amountScale": "4",
        #            "chain": "heco",
        #            "assetCode": "lbk",
        #            "min": "200",
        #            "transferAmtScale": "4",
        #            "canWithDraw": True,
        #            "fee": "100",
        #            "minTransfer": "0.0001",
        #            "type": "1"
        #        },
        #        ...
        #    ]
        #
        result: dict = {}
        for i in range(0, len(response)):
            fee = response[i]
            canWithdraw = self.safe_value(fee, 'canWithDraw')
            if canWithdraw is True:
                currencyId = self.safe_string(fee, 'assetCode')
                code = self.safe_currency_code(currencyId)
                if codes is None or self.in_array(code, codes):
                    withdrawFee = self.safe_number(fee, 'fee')
                    if withdrawFee is not None:
                        resultValue = self.safe_value(result, code)
                        if resultValue is None:
                            result[code] = self.deposit_withdraw_fee([fee])
                        else:
                            resultCodeInfo = result[code]['info']
                            resultCodeInfo.append(fee)
                        networkCode = self.network_id_to_code(self.safe_string(fee, 'chain'))
                        if networkCode is not None:
                            result[code]['networks'][networkCode] = {
                                'withdraw': {
                                    'fee': withdrawFee,
                                    'percentage': None,
                                },
                                'deposit': {
                                    'fee': None,
                                    'percentage': None,
                                },
                            }
                        else:
                            result[code]['withdraw'] = {
                                'fee': withdrawFee,
                                'percentage': None,
                            }
        return result

    def parse_deposit_withdraw_fee(self, fee, currency: Currency = None):
        #
        # * only used for fetchPrivateDepositWithdrawFees
        #
        #    {
        #        "usableAmt": "14.36",
        #        "assetAmt": "14.36",
        #        "networkList": [
        #            {
        #                "isDefault": False,
        #                "withdrawFeeRate": "",
        #                "name": "erc20",
        #                "withdrawMin": 30,
        #                "minLimit": 0.0001,
        #                "minDeposit": 20,
        #                "feeAssetCode": "usdt",
        #                "withdrawFee": "30",
        #                "type": 1,
        #                "coin": "usdt",
        #                "network": "eth"
        #            },
        #            ...
        #        ],
        #        "freezeAmt": "0",
        #        "coin": "ada"
        #    }
        #
        result = self.deposit_withdraw_fee(fee)
        networkList = self.safe_value(fee, 'networkList', [])
        for j in range(0, len(networkList)):
            networkEntry = networkList[j]
            networkCode = self.network_id_to_code(self.safe_string(networkEntry, 'name'))
            withdrawFee = self.safe_number(networkEntry, 'withdrawFee')
            isDefault = self.safe_value(networkEntry, 'isDefault')
            if withdrawFee is not None:
                if isDefault:
                    result['withdraw'] = {
                        'fee': withdrawFee,
                        'percentage': None,
                    }
                result['networks'][networkCode] = {
                    'withdraw': {
                        'fee': withdrawFee,
                        'percentage': None,
                    },
                    'deposit': {
                        'fee': None,
                        'percentage': None,
                    },
                }
        return result

    def sign(self, path, api='public', method='GET', params={}, headers=None, body=None):
        query = self.omit(params, self.extract_params(path))
        url = self.urls['api']['rest'] + '/' + self.version + '/' + self.implode_params(path, params)
        # Every spot endpoint ends with ".do"
        if api[0] == 'spot':
            url += '.do'
        else:
            url = self.urls['api']['contract'] + '/' + self.implode_params(path, params)
        if api[1] == 'public':
            if query:
                url += '?' + self.urlencode(self.keysort(query))
        else:
            self.check_required_credentials()
            timestamp = str(self.milliseconds())
            echostr = self.uuid22() + self.uuid16()
            query = self.extend({
                'api_key': self.apiKey,
            }, query)
            signatureMethod = None
            if len(self.secret) > 32:
                signatureMethod = 'RSA'
            else:
                signatureMethod = 'HmacSHA256'
            finalSig = signatureMethod  # java req
            auth = self.rawencode(self.keysort(self.extend({
                'echostr': echostr,
                'signature_method': finalSig,
                'timestamp': timestamp,
            }, query)))
            encoded = self.encode(auth)
            hash = self.hash(encoded, 'md5')
            uppercaseHash = hash.upper()
            sign = None
            if signatureMethod == 'RSA':
                cacheSecretAsPem = self.safe_bool(self.options, 'cacheSecretAsPem', True)
                pem = None
                if cacheSecretAsPem:
                    pem = self.safe_value(self.options, 'pem')
                    if pem is None:
                        pem = self.convert_secret_to_pem(self.encode(self.secret))
                        self.options['pem'] = pem
                else:
                    pem = self.convert_secret_to_pem(self.encode(self.secret))
                sign = self.rsa(uppercaseHash, pem, 'sha256')
            elif signatureMethod == 'HmacSHA256':
                sign = self.hmac(self.encode(uppercaseHash), self.encode(self.secret), hashlib.sha256)
            query['sign'] = sign
            body = self.urlencode(self.keysort(query))
            headers = {
                'Content-Type': 'application/x-www-form-urlencoded',
                'timestamp': timestamp,
                'signature_method': signatureMethod,
                'echostr': echostr,
            }
        return {'url': url, 'method': method, 'body': body, 'headers': headers}

    def convert_secret_to_pem(self, secret):
        lineLength = 64
        secretLength = len(secret) - 0
        numLines = self.parse_to_int(secretLength / lineLength)
        numLines = self.sum(numLines, 1)
        pem = "-----BEGIN PRIVATE KEY-----\n"  # eslint-disable-line
        for i in range(0, numLines):
            start = i * lineLength
            end = self.sum(start, lineLength)
            pem += self.secret[start:end] + "\n"  # eslint-disable-line
        return pem + '-----END PRIVATE KEY-----'

    def handle_errors(self, httpCode: int, reason: str, url: str, method: str, headers: dict, body: str, response, requestHeaders, requestBody):
        if response is None:
            return None
        success = self.safe_value(response, 'result')
        if success == 'false' or not success:
            errorCode = self.safe_string(response, 'error_code')
            message = self.safe_string({
                '10000': 'Internal error',
                '10001': 'The required parameters can not be empty',
                '10002': 'Validation failed',
                '10003': 'Invalid parameter',
                '10004': 'Request too frequent',
                '10005': 'Secret key does not exist',
                '10006': 'User does not exist',
                '10007': 'Invalid signature',
                '10008': 'Invalid Trading Pair',
                '10009': 'Price and/or Amount are required for limit order',
                '10010': 'Price and/or Amount must be less than minimum requirement',
                # '10011': 'Market orders can not be missing the amount of the order',
                # '10012': 'market sell orders can not be missing orders',
                '10013': 'The amount is too small',
                '10014': 'Insufficient amount of money in the account',
                '10015': 'Invalid order type',
                '10016': 'Insufficient account balance',
                '10017': 'Server Error',
                '10018': 'Page size should be between 1 and 50',
                '10019': 'Cancel NO more than 3 orders in one request',
                '10020': 'Volume < 0.001',
                '10021': 'Price < 0.01',
                '10022': 'Invalid authorization',
                '10023': 'Market Order is not supported yet',
                '10024': 'User cannot trade on self pair',
                '10025': 'Order has been filled',
                '10026': 'Order has been cancelld',
                '10027': 'Order is cancelling',
                '10028': 'Wrong query time',
                '10029': 'from is not in the query time',
                '10030': 'from do not match the transaction type of inqury',
                '10031': 'echostr length must be valid and length must be from 30 to 40',
                '10033': 'Failed to create order',
                '10036': 'customID duplicated',
                '10100': 'Has no privilege to withdraw',
                '10101': 'Invalid fee rate to withdraw',
                '10102': 'Too little to withdraw',
                '10103': 'Exceed daily limitation of withdraw',
                '10104': 'Cancel was rejected',
                '10105': 'Request has been cancelled',
                '10106': 'None trade time',
                '10107': 'Start price exception',
                '10108': 'can not create order',
                '10109': 'wallet address is not mapping',
                '10110': 'transfer fee is not mapping',
                '10111': 'mount > 0',
                '10112': 'fee is too lower',
                '10113': 'transfer fee is 0',
                '10600': 'intercepted by replay attacks filter, check timestamp',
                '10601': 'Interface closed unavailable',
                '10701': 'invalid asset code',
                '10702': 'not allowed deposit',
            }, errorCode, self.json(response))
            ErrorClass = self.safe_value({
                '10001': BadRequest,
                '10002': AuthenticationError,
                '10003': BadRequest,
                '10004': RateLimitExceeded,
                '10005': AuthenticationError,
                '10006': AuthenticationError,
                '10007': AuthenticationError,
                '10008': BadSymbol,
                '10009': InvalidOrder,
                '10010': InvalidOrder,
                '10013': InvalidOrder,
                '10014': InsufficientFunds,
                '10015': InvalidOrder,
                '10016': InsufficientFunds,
                '10017': ExchangeError,
                '10018': BadRequest,
                '10019': BadRequest,
                '10020': BadRequest,
                '10021': InvalidOrder,
                '10022': PermissionDenied,  # 'Invalid authorization',
                '10023': InvalidOrder,  # 'Market Order is not supported yet',
                '10024': PermissionDenied,  # 'User cannot trade on self pair',
                '10025': InvalidOrder,  # 'Order has been filled',
                '10026': InvalidOrder,  # 'Order has been cancelled',
                '10027': InvalidOrder,  # 'Order is cancelling',
                '10028': BadRequest,  # 'Wrong query time',
                '10029': BadRequest,  # 'from is not in the query time',
                '10030': BadRequest,  # 'from do not match the transaction type of inqury',
                '10031': InvalidNonce,  # 'echostr length must be valid and length must be from 30 to 40',
                '10033': ExchangeError,  # 'Failed to create order',
                '10036': DuplicateOrderId,  # 'customID duplicated',
                '10100': PermissionDenied,  # 'Has no privilege to withdraw',
                '10101': BadRequest,  # 'Invalid fee rate to withdraw',
                '10102': InsufficientFunds,  # 'Too little to withdraw',
                '10103': ExchangeError,  # 'Exceed daily limitation of withdraw',
                '10104': ExchangeError,  # 'Cancel was rejected',
                '10105': ExchangeError,  # 'Request has been cancelled',
                '10106': BadRequest,  # 'None trade time',
                '10107': BadRequest,  # 'Start price exception',
                '10108': ExchangeError,  # 'can not create order',
                '10109': InvalidAddress,  # 'wallet address is not mapping',
                '10110': ExchangeError,  # 'transfer fee is not mapping',
                '10111': BadRequest,  # 'mount > 0',
                '10112': BadRequest,  # 'fee is too lower',
                '10113': BadRequest,  # 'transfer fee is 0',
                '10600': BadRequest,  # 'intercepted by replay attacks filter, check timestamp',
                '10601': ExchangeError,  # 'Interface closed unavailable',
                '10701': BadSymbol,  # 'invalid asset code',
                '10702': PermissionDenied,  # 'not allowed deposit',
            }, errorCode, ExchangeError)
            raise ErrorClass(message)
        return None
