# -*- 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.async_support.base.exchange import Exchange
from ccxt.abstract.bigone import ImplicitAPI
import asyncio
from ccxt.base.types import Any, Balances, Currencies, Currency, DepositAddress, Int, Market, Num, Order, OrderBook, OrderSide, OrderType, Str, Strings, Ticker, Tickers, Trade, Transaction, TransferEntry
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 InvalidOrder
from ccxt.base.errors import NotSupported
from ccxt.base.errors import RateLimitExceeded
from ccxt.base.decimal_to_precision import TICK_SIZE
from ccxt.base.precise import Precise


class bigone(Exchange, ImplicitAPI):

    def describe(self) -> Any:
        return self.deep_extend(super(bigone, self).describe(), {
            'id': 'bigone',
            'name': 'BigONE',
            'countries': ['CN'],
            'version': 'v3',
            'rateLimit': 20,  # 500 requests per 10 seconds
            'has': {
                'CORS': None,
                'spot': True,
                'margin': False,
                'swap': True,
                'future': None,  # has but unimplemented
                'option': False,
                'borrowCrossMargin': False,
                'borrowIsolatedMargin': False,
                'borrowMargin': False,
                'cancelAllOrders': True,
                'cancelOrder': True,
                'createMarketBuyOrderWithCost': True,
                'createMarketOrderWithCost': False,
                'createMarketSellOrderWithCost': False,
                'createOrder': True,
                'createPostOnlyOrder': True,
                'createStopLimitOrder': True,
                'createStopMarketOrder': True,
                'createStopOrder': True,
                'fetchAllGreeks': False,
                'fetchBalance': True,
                'fetchBorrowInterest': False,
                'fetchBorrowRate': False,
                'fetchBorrowRateHistories': False,
                'fetchBorrowRateHistory': False,
                'fetchBorrowRates': False,
                'fetchBorrowRatesPerSymbol': False,
                'fetchClosedOrders': True,
                'fetchCrossBorrowRate': False,
                'fetchCrossBorrowRates': False,
                'fetchCurrencies': True,
                'fetchDepositAddress': True,
                'fetchDepositAddresses': False,
                'fetchDepositAddressesByNetwork': False,
                'fetchDeposits': True,
                'fetchFundingHistory': False,
                'fetchFundingRate': False,
                'fetchFundingRateHistory': False,
                'fetchFundingRates': False,
                'fetchGreeks': False,
                'fetchIsolatedBorrowRate': False,
                'fetchIsolatedBorrowRates': False,
                'fetchMarkets': True,
                'fetchMyTrades': True,
                'fetchOHLCV': True,
                'fetchOpenOrders': True,
                'fetchOption': False,
                'fetchOptionChain': False,
                'fetchOrder': True,
                'fetchOrderBook': True,
                'fetchOrders': True,
                'fetchTicker': True,
                'fetchTickers': True,
                'fetchTime': True,
                'fetchTrades': True,
                'fetchTradingFee': False,
                'fetchTradingFees': False,
                'fetchTransactionFees': False,
                'fetchVolatilityHistory': False,
                'fetchWithdrawals': True,
                'repayCrossMargin': False,
                'repayIsolatedMargin': False,
                'transfer': True,
                'withdraw': True,
            },
            'timeframes': {
                '1m': 'min1',
                '5m': 'min5',
                '15m': 'min15',
                '30m': 'min30',
                '1h': 'hour1',
                '3h': 'hour3',
                '4h': 'hour4',
                '6h': 'hour6',
                '12h': 'hour12',
                '1d': 'day1',
                '1w': 'week1',
                '1M': 'month1',
            },
            'hostname': 'big.one',  # or 'bigone.com'
            'urls': {
                'logo': 'https://github.com/user-attachments/assets/4e5cfd53-98cc-4b90-92cd-0d7b512653d1',
                'api': {
                    'public': 'https://{hostname}/api/v3',
                    'private': 'https://{hostname}/api/v3/viewer',
                    'contractPublic': 'https://{hostname}/api/contract/v2',
                    'contractPrivate': 'https://{hostname}/api/contract/v2',
                    'webExchange': 'https://{hostname}/api/',
                },
                'www': 'https://big.one',
                'doc': 'https://open.big.one/docs/api.html',
                'fees': 'https://bigone.zendesk.com/hc/en-us/articles/115001933374-BigONE-Fee-Policy',
                'referral': 'https://b1.run/users/new?code=D3LLBVFT',
            },
            'api': {
                'public': {
                    'get': [
                        'ping',
                        'asset_pairs',
                        'asset_pairs/{asset_pair_name}/depth',
                        'asset_pairs/{asset_pair_name}/trades',
                        'asset_pairs/{asset_pair_name}/ticker',
                        'asset_pairs/{asset_pair_name}/candles',
                        'asset_pairs/tickers',
                    ],
                },
                'private': {
                    'get': [
                        'accounts',
                        'fund/accounts',
                        'assets/{asset_symbol}/address',
                        'orders',
                        'orders/{id}',
                        'orders/multi',
                        'trades',
                        'withdrawals',
                        'deposits',
                    ],
                    'post': [
                        'orders',
                        'orders/{id}/cancel',
                        'orders/cancel',
                        'withdrawals',
                        'transfer',
                    ],
                },
                'contractPublic': {
                    'get': [
                        'symbols',
                        'instruments',
                        'depth@{symbol}/snapshot',
                        'instruments/difference',
                        'instruments/prices',
                    ],
                },
                'contractPrivate': {
                    'get': [
                        'accounts',
                        'orders/{id}',
                        'orders',
                        'orders/opening',
                        'orders/count',
                        'orders/opening/count',
                        'trades',
                        'trades/count',
                    ],
                    'post': [
                        'orders',
                        'orders/batch',
                    ],
                    'put': [
                        'positions/{symbol}/margin',
                        'positions/{symbol}/risk-limit',
                    ],
                    'delete': [
                        'orders/{id}',
                        'orders/batch',
                    ],
                },
                'webExchange': {
                    'get': [
                        'v3/assets',
                    ],
                },
            },
            'fees': {
                'trading': {
                    'maker': self.parse_number('0.001'),
                    'taker': self.parse_number('0.001'),
                },
                'funding': {
                    'withdraw': {},
                },
            },
            'options': {
                'createMarketBuyOrderRequiresPrice': True,
                'accountsByType': {
                    'spot': 'SPOT',
                    'fund': 'FUND',
                    'funding': 'FUND',
                    'future': 'CONTRACT',
                    'swap': 'CONTRACT',
                },
                'transfer': {
                    'fillResponseFromRequest': True,
                },
                'exchangeMillisecondsCorrection': -100,
                'fetchCurrencies': {
                    'webApiEnable': True,  # fetches from WEB
                    'webApiRetries': 5,
                    'webApiMuteFailure': True,
                },
                'defaultNetwork': 'ERC20',
                'defaultNetworks': {
                    'USDT': 'TRC20',
                },
                'networks': {
                    'ABBC': 'ABBC',
                    'ACA': 'Acala',
                    'AE': 'Aeternity',
                    'ALGO': 'Algorand',
                    'APT': 'Aptos',
                    'AR': 'Arweave',
                    'ASTR': 'Astar',
                    'AVAXC': 'Avax',
                    'AVAXX': 'AvaxChain',
                    'BEAM': 'Beam',
                    'BEP20': 'BinanceSmartChain',
                    'BITCI': 'BitciChain',
                    'BTC': 'Bitcoin',
                    'BCH': 'BitcoinCash',
                    'BSV': 'BitcoinSV',
                    'CELO': 'Celo',
                    'CKKB': 'CKB',
                    'ATOM': 'Cosmos',
                    'CRC20': 'CRO',
                    'DASH': 'Dash',
                    'DOGE': 'Dogecoin',
                    'XEC': 'ECash',
                    'EOS': 'EOS',
                    'ETH': 'Ethereum',
                    'ETC': 'EthereumClassic',
                    'ETHW': 'EthereumPow',
                    'FTM': 'Fantom',
                    'FIL': 'Filecoin',
                    'FSN': 'Fusion',
                    'GRIN': 'Grin',
                    'ONE': 'Harmony',
                    'HRC20': 'Hecochain',
                    'HBAR': 'Hedera',
                    'HNT': 'Helium',
                    'ZEN': 'Horizen',
                    'IOST': 'IOST',
                    'IRIS': 'IRIS',
                    'KLAY': 'Klaytn',
                    'KSM': 'Kusama',
                    'LTC': 'Litecoin',
                    'XMR': 'Monero',
                    'GLMR': 'Moonbeam',
                    'NEAR': 'Near',
                    'NEO': 'Neo',
                    'NEON3': 'NeoN3',
                    'OASIS': 'Oasis',
                    'OKC': 'Okexchain',
                    'ONT': 'Ontology',
                    'OPTIMISM': 'Optimism',
                    'DOT': 'Polkadot',
                    'MATIC': 'Polygon',
                    'QTUM': 'Qtum',
                    'REI': 'REI',
                    'XRP': 'Ripple',
                    'SGB': 'SGB',
                    'SDN': 'Shiden',
                    'SOL': 'Solana',
                    'XLM': 'Stellar',
                    'TERA': 'Tera',
                    'XTZ': 'Tezos',
                    'TRC20': 'Tron',
                    'VET': 'Vechain',
                    'VSYS': 'VSystems',
                    'WAX': 'WAX',
                    'ZEC': 'Zcash',
                    # todo: uncomment after consensus
                    # 'BITSHARES_OLD': 'Bitshares',
                    # 'BITSHARES_NEW': 'NewBitshares',
                    # 'MOBILECOIN': 'Mobilecoin',
                    # 'LBRY': 'Lbry',
                    # 'ZEEPIN': 'Zeepin',
                    # 'WAYFCOIN': 'Wayfcoin',
                    # 'UCACOIN': 'Ucacoin',
                    # 'VANILLACASH': 'Vcash',
                    # 'LAMDEN': 'Lamden',
                    # 'GXSHARES': 'Gxshares',
                    # 'ICP': 'Dfinity',
                    # 'CLOVER': 'Clover',
                    # 'CLASSZZ': 'Classzz',
                    # 'CLASSZZ_V2': 'ClasszzV2',
                    # 'CHAINX_V2': 'ChainxV2',
                    # 'BITCOINDIAMON': 'BitcoinDiamond',
                    # 'BITCOINGOLD': 'BitcoinGold',
                    # 'BUTTRUSTSYSTEM': 'BitTrustSystem',
                    # 'BYTOM_V2': 'BytomV2',
                    # 'LIBONOMY': 'Libonomy',
                    # 'TERRACLASSIC': 'Terra',
                    # 'TERRA': 'Terra2',
                    # 'SUPERBITCOIN': 'SuperBitcoin',
                    # 'SIACLASSIC': 'Sia',
                    # 'SIACOIN': 'SiaCore',
                    # 'PARALLELFINANCE': 'Parallel',
                    # 'PLCULTIMA': 'Plcu',
                    # 'PLCULTIMA2': 'Plcu2',
                    # undetermined: XinFin, YAS, Ycash
                },
            },
            'features': {
                'default': {
                    'sandbox': False,
                    'createOrder': {
                        'marginMode': False,
                        'triggerPrice': True,
                        'triggerPriceType': None,
                        'triggerDirection': True,  # todo implement
                        'stopLossPrice': False,  # todo by trigger
                        'takeProfitPrice': False,  # todo by trigger
                        'attachedStopLossTakeProfit': None,
                        'timeInForce': {
                            'IOC': True,
                            'FOK': False,
                            'PO': True,
                            'GTD': False,
                        },
                        'hedged': False,
                        'trailing': False,
                        'leverage': False,
                        'marketBuyRequiresPrice': True,
                        'marketBuyByCost': True,
                        'selfTradePrevention': False,
                        'iceberg': False,
                    },
                    'createOrders': None,  # todo: implement
                    'fetchMyTrades': {
                        'marginMode': False,
                        'limit': 200,
                        'daysBack': None,
                        'untilDays': None,
                        'symbolRequired': True,
                    },
                    'fetchOrder': {
                        'marginMode': False,
                        'trigger': False,
                        'trailing': False,
                        'symbolRequired': False,
                    },
                    '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': {
                        'marginMode': False,
                        'limit': 200,
                        'daysBack': None,
                        'daysBackCanceled': None,
                        'untilDays': None,
                        'trigger': False,
                        'trailing': False,
                        'symbolRequired': True,
                    },
                    'fetchOHLCV': {
                        'limit': 500,
                    },
                },
                'spot': {
                    'extends': 'default',
                },
                'forDerivatives': {
                    'extends': 'default',
                    'createOrder': {
                        # todo: implement
                        'triggerPriceType': {
                            'mark': True,
                            'index': True,
                            'last': True,
                        },
                    },
                    'fetchOrders': {
                        'daysBack': 100000,
                        'untilDays': 100000,
                    },
                    'fetchClosedOrders': {
                        'daysBack': 100000,
                        'untilDays': 100000,
                    },
                },
                'swap': {
                    'linear': {
                        'extends': 'forDerivatives',
                    },
                    'inverse': {
                        'extends': 'forDerivatives',
                    },
                },
                'future': {
                    'linear': None,
                    'inverse': None,
                },
            },
            'precisionMode': TICK_SIZE,
            'exceptions': {
                'exact': {
                    '10001': BadRequest,  # syntax error
                    '10005': ExchangeError,  # internal error
                    "Amount's scale must greater than AssetPair's base scale": InvalidOrder,
                    "Price mulit with amount should larger than AssetPair's min_quote_value": InvalidOrder,
                    '10007': BadRequest,  # parameter error, {"code":10007,"message":"Amount's scale must greater than AssetPair's base scale"}
                    '10011': ExchangeError,  # system error
                    '10013': BadSymbol,  # {"code":10013,"message":"Resource not found"}
                    '10014': InsufficientFunds,  # {"code":10014,"message":"Insufficient funds"}
                    '10403': PermissionDenied,  # permission denied
                    '10429': RateLimitExceeded,  # too many requests
                    '40004': AuthenticationError,  # {"code":40004,"message":"invalid jwt"}
                    '40103': AuthenticationError,  # invalid otp code
                    '40104': AuthenticationError,  # invalid asset pin code
                    '40301': PermissionDenied,  # {"code":40301,"message":"Permission denied withdrawal create"}
                    '40302': ExchangeError,  # already requested
                    '40601': ExchangeError,  # resource is locked
                    '40602': ExchangeError,  # resource is depleted
                    '40603': InsufficientFunds,  # insufficient resource
                    '40604': InvalidOrder,  # {"code":40604,"message":"Price exceed the maximum order price"}
                    '40605': InvalidOrder,  # {"code":40605,"message":"Price less than the minimum order price"}
                    '40120': InvalidOrder,  # Order is in trading
                    '40121': InvalidOrder,  # Order is already cancelled or filled
                    '60100': BadSymbol,  # {"code":60100,"message":"Asset pair is suspended"}
                },
                'broad': {
                },
            },
            'commonCurrencies': {
                'CRE': 'Cybereits',
                'FXT': 'FXTTOKEN',
                'FREE': 'FreeRossDAO',
                'MBN': 'Mobilian Coin',
                'ONE': 'BigONE Token',
            },
        })

    async 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
        """
        # we use undocumented link(possible, less informative alternative is : https://big.one/api/uc/v3/assets/accounts)
        data = await self.fetch_web_endpoint('fetchCurrencies', 'webExchangeGetV3Assets', True)
        if data is None:
            return {}
        #
        # {
        #     "code": "0",
        #     "message": "",
        #     "data": [
        #       {
        #             "uuid": "17082d1c-0195-4fb6-8779-2cdbcb9eeb3c",
        #             "symbol": "USDT",
        #             "name": "TetherUS",
        #             "scale": 12,
        #             "is_fiat": False,
        #             "is_transfer_enabled": True,
        #             "transfer_scale": 12,
        #             "binding_gateways": [
        #                 {
        #                     "guid": "07efc37f-d1ec-4bc9-8339-a745256ea2ba",
        #                     "is_deposit_enabled": True,
        #                     "gateway_name": "Ethereum",
        #                     "min_withdrawal_amount": "0.000001",
        #                     "withdrawal_fee": "5.71",
        #                     "is_withdrawal_enabled": True,
        #                     "min_deposit_amount": "0.000001",
        #                     "is_memo_required": False,
        #                     "withdrawal_scale": 6,
        #                     "scale": 12
        #                 },
        #                 {
        #                     "guid": "4e387a9a-a480-40a3-b4ae-ed1773c2db5a",
        #                     "is_deposit_enabled": True,
        #                     "gateway_name": "BinanceSmartChain",
        #                     "min_withdrawal_amount": "10",
        #                     "withdrawal_fee": "5",
        #                     "is_withdrawal_enabled": False,
        #                     "min_deposit_amount": "1",
        #                     "is_memo_required": False,
        #                     "withdrawal_scale": 8,
        #                     "scale": 12
        #                 }
        #             ]
        #         },
        #       ...
        #     ],
        # }
        #
        currenciesData = self.safe_list(data, 'data', [])
        result: dict = {}
        for i in range(0, len(currenciesData)):
            currency = currenciesData[i]
            id = self.safe_string(currency, 'symbol')
            code = self.safe_currency_code(id)
            name = self.safe_string(currency, 'name')
            networks: dict = {}
            chains = self.safe_list(currency, 'binding_gateways', [])
            currencyMaxPrecision = self.parse_precision(self.safe_string_2(currency, 'withdrawal_scale', 'scale'))
            for j in range(0, len(chains)):
                chain = chains[j]
                networkId = self.safe_string(chain, 'gateway_name')
                networkCode = self.network_id_to_code(networkId)
                deposit = self.safe_bool(chain, 'is_deposit_enabled')
                withdraw = self.safe_bool(chain, 'is_withdrawal_enabled')
                minDepositAmount = self.safe_string(chain, 'min_deposit_amount')
                minWithdrawalAmount = self.safe_string(chain, 'min_withdrawal_amount')
                withdrawalFee = self.safe_string(chain, 'withdrawal_fee')
                precision = self.parse_precision(self.safe_string_2(chain, 'withdrawal_scale', 'scale'))
                networks[networkCode] = {
                    'id': networkId,
                    'network': networkCode,
                    'margin': None,
                    'deposit': deposit,
                    'withdraw': withdraw,
                    'active': None,
                    'fee': self.parse_number(withdrawalFee),
                    'precision': self.parse_number(precision),
                    'limits': {
                        'deposit': {
                            'min': minDepositAmount,
                            'max': None,
                        },
                        'withdraw': {
                            'min': minWithdrawalAmount,
                            'max': None,
                        },
                    },
                    'info': chain,
                }
            chainLength = len(chains)
            type: Str = None
            if self.safe_bool(currency, 'is_fiat'):
                type = 'fiat'
            elif chainLength == 0:
                if self.is_leveraged_currency(id):
                    type = 'leveraged'
                else:
                    type = 'other'
            else:
                type = 'crypto'
            result[code] = self.safe_currency_structure({
                'id': id,
                'code': code,
                'info': currency,
                'name': name,
                'type': type,
                'active': None,
                'deposit': None,
                'withdraw': None,
                'fee': None,
                'precision': self.parse_number(currencyMaxPrecision),
                'limits': {
                    'amount': {
                        'min': None,
                        'max': None,
                    },
                    'withdraw': {
                        'min': None,
                        'max': None,
                    },
                },
                'networks': networks,
            })
        return result

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

        https://open.big.one/docs/spot_asset_pair.html

        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict[]: an array of objects representing market data
        """
        promises = [self.publicGetAssetPairs(params), self.contractPublicGetSymbols(params)]
        promisesResult = await asyncio.gather(*promises)
        response = promisesResult[0]
        contractResponse = promisesResult[1]
        #
        #     {
        #         "code":0,
        #         "data":[
        #             {
        #                 "id":"01e48809-b42f-4a38-96b1-c4c547365db1",
        #                 "name":"PCX-BTC",
        #                 "quote_scale":7,
        #                 "quote_asset":{
        #                     "id":"0df9c3c3-255a-46d7-ab82-dedae169fba9",
        #                     "symbol":"BTC",
        #                     "name":"Bitcoin",
        #                 },
        #                 "base_asset":{
        #                     "id":"405484f7-4b03-4378-a9c1-2bd718ecab51",
        #                     "symbol":"PCX",
        #                     "name":"ChainX",
        #                 },
        #                 "base_scale":3,
        #                 "min_quote_value":"0.0001",
        #                 "max_quote_value":"35"
        #             },
        #         ]
        #     }
        #
        #
        #    [
        #        {
        #            "baseCurrency": "BTC",
        #            "multiplier": 1,
        #            "enable": True,
        #            "priceStep": 0.5,
        #            "maxRiskLimit": 1000,
        #            "pricePrecision": 1,
        #            "maintenanceMargin": 0.00500,
        #            "symbol": "BTCUSD",
        #            "valuePrecision": 4,
        #            "minRiskLimit": 100,
        #            "riskLimit": 100,
        #            "isInverse": True,
        #            "riskStep": 1,
        #            "settleCurrency": "BTC",
        #            "baseName": "Bitcoin",
        #            "feePrecision": 8,
        #            "priceMin": 0.5,
        #            "priceMax": 1E+6,
        #            "initialMargin": 0.01000,
        #            "quoteCurrency": "USD"
        #        },
        #        ...
        #    ]
        #
        markets = self.safe_list(response, 'data', [])
        result = []
        for i in range(0, len(markets)):
            market = markets[i]
            baseAsset = self.safe_dict(market, 'base_asset', {})
            quoteAsset = self.safe_dict(market, 'quote_asset', {})
            baseId = self.safe_string(baseAsset, 'symbol')
            quoteId = self.safe_string(quoteAsset, 'symbol')
            base = self.safe_currency_code(baseId)
            quote = self.safe_currency_code(quoteId)
            result.append(self.safe_market_structure({
                'id': self.safe_string(market, 'name'),
                'uuid': self.safe_string(market, 'id'),
                'symbol': base + '/' + quote,
                'base': base,
                'quote': quote,
                'settle': None,
                'baseId': baseId,
                'quoteId': quoteId,
                '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, 'base_scale'))),
                    'price': self.parse_number(self.parse_precision(self.safe_string(market, 'quote_scale'))),
                },
                'limits': {
                    'leverage': {
                        'min': None,
                        'max': None,
                    },
                    'amount': {
                        'min': None,
                        'max': None,
                    },
                    'price': {
                        'min': None,
                        'max': None,
                    },
                    'cost': {
                        'min': self.safe_number(market, 'min_quote_value'),
                        'max': self.safe_number(market, 'max_quote_value'),
                    },
                },
                'created': None,
                'info': market,
            }))
        for i in range(0, len(contractResponse)):
            market = contractResponse[i]
            baseId = self.safe_string(market, 'baseCurrency')
            quoteId = self.safe_string(market, 'quoteCurrency')
            settleId = self.safe_string(market, 'settleCurrency')
            marketId = self.safe_string(market, 'symbol')
            base = self.safe_currency_code(baseId)
            quote = self.safe_currency_code(quoteId)
            settle = self.safe_currency_code(settleId)
            inverse = self.safe_bool(market, 'isInverse')
            result.append(self.safe_market_structure({
                'id': marketId,
                'symbol': base + '/' + quote + ':' + settle,
                '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': self.safe_bool(market, 'enable'),
                'contract': True,
                'linear': not inverse,
                'inverse': inverse,
                'contractSize': self.safe_number(market, 'multiplier'),
                'expiry': None,
                'expiryDatetime': None,
                'strike': None,
                'optionType': None,
                'precision': {
                    'amount': self.parse_number(self.parse_precision(self.safe_string(market, 'valuePrecision'))),
                    'price': self.parse_number(self.parse_precision(self.safe_string(market, 'pricePrecision'))),
                },
                'limits': {
                    'leverage': {
                        'min': None,
                        'max': None,
                    },
                    'amount': {
                        'min': None,
                        'max': None,
                    },
                    'price': {
                        'min': self.safe_number(market, 'priceMin'),
                        'max': self.safe_number(market, 'priceMax'),
                    },
                    'cost': {
                        'min': self.safe_number(market, 'initialMargin'),
                        'max': None,
                    },
                },
                'info': market,
            }))
        return result

    def parse_ticker(self, ticker: dict, market: Market = None) -> Ticker:
        #
        # spot
        #
        #    {
        #        "asset_pair_name": "ETH-BTC",
        #        "bid": {
        #            "price": "0.021593",
        #            "order_count": 1,
        #            "quantity": "0.20936"
        #        },
        #        "ask": {
        #            "price": "0.021613",
        #            "order_count": 1,
        #            "quantity": "2.87064"
        #        },
        #        "open": "0.021795",
        #        "high": "0.021795",
        #        "low": "0.021471",
        #        "close": "0.021613",
        #        "volume": "117078.90431",
        #        "daily_change": "-0.000182"
        #    }
        #
        # contract
        #
        #    {
        #        "usdtPrice": 1.00031998,
        #        "symbol": "BTCUSD",
        #        "btcPrice": 34700.4,
        #        "ethPrice": 1787.83,
        #        "nextFundingRate": 0.00010,
        #        "fundingRate": 0.00010,
        #        "latestPrice": 34708.5,
        #        "last24hPriceChange": 0.0321,
        #        "indexPrice": 34700.4,
        #        "volume24h": 261319063,
        #        "turnover24h": 8204.129380685496,
        #        "nextFundingTime": 1698285600000,
        #        "markPrice": 34702.4646738,
        #        "last24hMaxPrice": 35127.5,
        #        "volume24hInUsd": 0.0,
        #        "openValue": 32.88054722085945,
        #        "last24hMinPrice": 33552.0,
        #        "openInterest": 1141372.0
        #    }
        #
        marketType = 'spot' if ('asset_pair_name' in ticker) else 'swap'
        marketId = self.safe_string_2(ticker, 'asset_pair_name', 'symbol')
        symbol = self.safe_symbol(marketId, market, '-', marketType)
        close = self.safe_string_2(ticker, 'close', 'latestPrice')
        bid = self.safe_dict(ticker, 'bid', {})
        ask = self.safe_dict(ticker, 'ask', {})
        return self.safe_ticker({
            'symbol': symbol,
            'timestamp': None,
            'datetime': None,
            'high': self.safe_string_2(ticker, 'high', 'last24hMaxPrice'),
            'low': self.safe_string_2(ticker, 'low', 'last24hMinPrice'),
            'bid': self.safe_string(bid, 'price'),
            'bidVolume': self.safe_string(bid, 'quantity'),
            'ask': self.safe_string(ask, 'price'),
            'askVolume': self.safe_string(ask, 'quantity'),
            'vwap': None,
            'open': self.safe_string(ticker, 'open'),
            'close': close,
            'last': close,
            'previousClose': None,
            'change': self.safe_string_2(ticker, 'daily_change', 'last24hPriceChange'),
            'percentage': None,
            'average': None,
            'baseVolume': self.safe_string_2(ticker, 'volume', 'volume24h'),
            'quoteVolume': self.safe_string(ticker, 'volume24hInUsd'),
            'markPrice': self.safe_string(ticker, 'markPrice'),
            'indexPrice': self.safe_string(ticker, 'indexPrice'),
            'info': ticker,
        }, market)

    async 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://open.big.one/docs/spot_tickers.html

        :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>`
        """
        await self.load_markets()
        market = self.market(symbol)
        type = None
        type, params = self.handle_market_type_and_params('fetchTicker', market, params)
        if type == 'spot':
            request: dict = {
                'asset_pair_name': market['id'],
            }
            response = await self.publicGetAssetPairsAssetPairNameTicker(self.extend(request, params))
            #
            #     {
            #         "code":0,
            #         "data":{
            #             "asset_pair_name":"ETH-BTC",
            #             "bid":{"price":"0.021593","order_count":1,"quantity":"0.20936"},
            #             "ask":{"price":"0.021613","order_count":1,"quantity":"2.87064"},
            #             "open":"0.021795",
            #             "high":"0.021795",
            #             "low":"0.021471",
            #             "close":"0.021613",
            #             "volume":"117078.90431",
            #             "daily_change":"-0.000182"
            #         }
            #     }
            #
            ticker = self.safe_dict(response, 'data', {})
            return self.parse_ticker(ticker, market)
        else:
            tickers = await self.fetch_tickers([symbol], params)
            return self.safe_value(tickers, symbol)

    async 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://open.big.one/docs/spot_tickers.html

        :param str[] [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>`
        """
        await self.load_markets()
        market = None
        symbol = self.safe_string(symbols, 0)
        if symbol is not None:
            market = self.market(symbol)
        type = None
        type, params = self.handle_market_type_and_params('fetchTickers', market, params)
        isSpot = type == 'spot'
        request: dict = {}
        symbols = self.market_symbols(symbols)
        data = None
        if isSpot:
            if symbols is not None:
                ids = self.market_ids(symbols)
                request['pair_names'] = ','.join(ids)
            response = await self.publicGetAssetPairsTickers(self.extend(request, params))
            #
            #    {
            #        "code": 0,
            #        "data": [
            #            {
            #                "asset_pair_name": "PCX-BTC",
            #                "bid": {
            #                    "price": "0.000234",
            #                    "order_count": 1,
            #                    "quantity": "0.518"
            #                },
            #                "ask": {
            #                    "price": "0.0002348",
            #                    "order_count": 1,
            #                    "quantity": "2.348"
            #                },
            #                "open": "0.0002343",
            #                "high": "0.0002348",
            #                "low": "0.0002162",
            #                "close": "0.0002348",
            #                "volume": "12887.016",
            #                "daily_change": "0.0000005"
            #            },
            #            ...
            #        ]
            #    }
            #
            data = self.safe_list(response, 'data', [])
        else:
            data = await self.contractPublicGetInstruments(params)
            #
            #    [
            #        {
            #            "usdtPrice": 1.00031998,
            #            "symbol": "BTCUSD",
            #            "btcPrice": 34700.4,
            #            "ethPrice": 1787.83,
            #            "nextFundingRate": 0.00010,
            #            "fundingRate": 0.00010,
            #            "latestPrice": 34708.5,
            #            "last24hPriceChange": 0.0321,
            #            "indexPrice": 34700.4,
            #            "volume24h": 261319063,
            #            "turnover24h": 8204.129380685496,
            #            "nextFundingTime": 1698285600000,
            #            "markPrice": 34702.4646738,
            #            "last24hMaxPrice": 35127.5,
            #            "volume24hInUsd": 0.0,
            #            "openValue": 32.88054722085945,
            #            "last24hMinPrice": 33552.0,
            #            "openInterest": 1141372.0
            #        }
            #        ...
            #    ]
            #
        tickers = self.parse_tickers(data, symbols)
        return self.filter_by_array_tickers(tickers, 'symbol', symbols)

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

        https://open.big.one/docs/spot_ping.html

        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns int: the current integer timestamp in milliseconds from the exchange server
        """
        response = await self.publicGetPing(params)
        #
        #     {
        #         "data": {
        #             "timestamp": 1527665262168391000
        #         }
        #     }
        #
        data = self.safe_dict(response, 'data', {})
        timestamp = self.safe_integer(data, 'Timestamp')
        return self.parse_to_int(timestamp / 1000000)

    async 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://open.big.one/docs/contract_misc.html#get-orderbook-snapshot

        :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
        """
        await self.load_markets()
        market = self.market(symbol)
        response = None
        if market['contract']:
            request: dict = {
                'symbol': market['id'],
            }
            response = await self.contractPublicGetDepthSymbolSnapshot(self.extend(request, params))
            #
            #    {
            #        bids: {
            #            '20000': '20',
            #            ...
            #            '34552': '64851',
            #            '34526.5': '59594',
            #            ...
            #            '34551.5': '29711'
            #        },
            #        asks: {
            #            '34557': '34395',
            #            ...
            #            '40000': '20',
            #            '34611.5': '56024',
            #            ...
            #            '34578.5': '66367'
            #        },
            #        to: '59737174',
            #        lastPrice: '34554.5',
            #        bestPrices: {
            #            ask: '34557.0',
            #            bid: '34552.0'
            #        },
            #        from: '0'
            #    }
            #
            return self.parse_contract_order_book(response, market['symbol'], limit)
        else:
            request: dict = {
                'asset_pair_name': market['id'],
            }
            if limit is not None:
                request['limit'] = limit  # default 50, max 200
            response = await self.publicGetAssetPairsAssetPairNameDepth(self.extend(request, params))
            #
            #     {
            #         "code":0,
            #         "data": {
            #             "asset_pair_name": "EOS-BTC",
            #             "bids": [
            #                 {"price": "42", "order_count": 4, "quantity": "23.33363711"}
            #             ],
            #             "asks": [
            #                 {"price": "45", "order_count": 2, "quantity": "4193.3283464"}
            #             ]
            #         }
            #     }
            #
            orderbook = self.safe_dict(response, 'data', {})
            return self.parse_order_book(orderbook, market['symbol'], None, 'bids', 'asks', 'price', 'quantity')

    def parse_contract_bids_asks(self, bidsAsks):
        bidsAsksKeys = list(bidsAsks.keys())
        result = []
        for i in range(0, len(bidsAsksKeys)):
            price = bidsAsksKeys[i]
            amount = bidsAsks[price]
            result.append([self.parse_number(price), self.parse_number(amount)])
        return result

    def parse_contract_order_book(self, orderbook: object, symbol: str, limit: Int = None) -> OrderBook:
        responseBids = self.safe_value(orderbook, 'bids')
        responseAsks = self.safe_value(orderbook, 'asks')
        bids = self.parse_contract_bids_asks(responseBids)
        asks = self.parse_contract_bids_asks(responseAsks)
        return {
            'symbol': symbol,
            'bids': self.filter_by_limit(self.sort_by(bids, 0, True), limit),
            'asks': self.filter_by_limit(self.sort_by(asks, 0), limit),
            'timestamp': None,
            'datetime': None,
            'nonce': None,
        }

    def parse_trade(self, trade: dict, market: Market = None) -> Trade:
        #
        # fetchTrades(public)
        #
        #     {
        #         "id": 38199941,
        #         "price": "3378.67",
        #         "amount": "0.019812",
        #         "taker_side": "ASK",
        #         "created_at": "2019-01-29T06:05:56Z"
        #     }
        #
        # fetchMyTrades(private)
        #
        #     {
        #         "id": 10854280,
        #         "asset_pair_name": "XIN-USDT",
        #         "price": "70",
        #         "amount": "1",
        #         "taker_side": "ASK",
        #         "maker_order_id": 58284908,
        #         "taker_order_id": 58284909,
        #         "maker_fee": "0.0008",
        #         "taker_fee": "0.07",
        #         "side": "SELF_TRADING",
        #         "inserted_at": "2019-04-16T12:00:01Z"
        #     },
        #
        #     {
        #         "id": 10854263,
        #         "asset_pair_name": "XIN-USDT",
        #         "price": "75.7",
        #         "amount": "12.743149",
        #         "taker_side": "BID",
        #         "maker_order_id": null,
        #         "taker_order_id": 58284888,
        #         "maker_fee": null,
        #         "taker_fee": "0.0025486298",
        #         "side": "BID",
        #         "inserted_at": "2019-04-15T06:20:57Z"
        #     }
        #
        timestamp = self.parse8601(self.safe_string_2(trade, 'created_at', 'inserted_at'))
        priceString = self.safe_string(trade, 'price')
        amountString = self.safe_string(trade, 'amount')
        marketId = self.safe_string(trade, 'asset_pair_name')
        market = self.safe_market(marketId, market, '-')
        side = self.safe_string(trade, 'side')
        takerSide = self.safe_string(trade, 'taker_side')
        takerOrMaker: Str = None
        if (takerSide is not None) and (side is not None) and (side != 'SELF_TRADING'):
            takerOrMaker = 'taker' if (takerSide == side) else 'maker'
        if side is None:
            # taker side is not related to buy/sell side
            # the following code is probably a mistake
            side = 'sell' if (takerSide == 'ASK') else 'buy'
        else:
            if side == 'BID':
                side = 'buy'
            elif side == 'ASK':
                side = 'sell'
        makerOrderId = self.safe_string(trade, 'maker_order_id')
        takerOrderId = self.safe_string(trade, 'taker_order_id')
        orderId: Str = None
        if makerOrderId is not None:
            orderId = makerOrderId
        elif takerOrderId is not None:
            orderId = takerOrderId
        id = self.safe_string(trade, 'id')
        result: dict = {
            'id': id,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'symbol': market['symbol'],
            'order': orderId,
            'type': 'limit',
            'side': side,
            'takerOrMaker': takerOrMaker,
            'price': priceString,
            'amount': amountString,
            'cost': None,
            'info': trade,
        }
        makerCurrencyCode: str
        takerCurrencyCode: str
        if takerOrMaker is not None:
            if side == 'buy':
                if takerOrMaker == 'maker':
                    makerCurrencyCode = market['base']
                    takerCurrencyCode = market['quote']
                else:
                    makerCurrencyCode = market['quote']
                    takerCurrencyCode = market['base']
            else:
                if takerOrMaker == 'maker':
                    makerCurrencyCode = market['quote']
                    takerCurrencyCode = market['base']
                else:
                    makerCurrencyCode = market['base']
                    takerCurrencyCode = market['quote']
        elif side == 'SELF_TRADING':
            if takerSide == 'BID':
                makerCurrencyCode = market['quote']
                takerCurrencyCode = market['base']
            elif takerSide == 'ASK':
                makerCurrencyCode = market['base']
                takerCurrencyCode = market['quote']
        makerFeeCost = self.safe_string(trade, 'maker_fee')
        takerFeeCost = self.safe_string(trade, 'taker_fee')
        if makerFeeCost is not None:
            if takerFeeCost is not None:
                result['fees'] = [
                    {'cost': makerFeeCost, 'currency': makerCurrencyCode},
                    {'cost': takerFeeCost, 'currency': takerCurrencyCode},
                ]
            else:
                result['fee'] = {'cost': makerFeeCost, 'currency': makerCurrencyCode}
        elif takerFeeCost is not None:
            result['fee'] = {'cost': takerFeeCost, 'currency': takerCurrencyCode}
        else:
            result['fee'] = None
        return self.safe_trade(result, market)

    async 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://open.big.one/docs/spot_asset_pair_trade.html

        :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>`
        """
        await self.load_markets()
        market = self.market(symbol)
        if market['contract']:
            raise NotSupported(self.id + ' fetchTrades() can only fetch trades for spot markets')
        request: dict = {
            'asset_pair_name': market['id'],
        }
        response = await self.publicGetAssetPairsAssetPairNameTrades(self.extend(request, params))
        #
        #     {
        #         "code": 0,
        #         "data": [
        #             {
        #                 "id": 38199941,
        #                 "price": "3378.67",
        #                 "amount": "0.019812",
        #                 "taker_side": "ASK",
        #                 "created_at": "2019-01-29T06:05:56Z"
        #             },
        #             {
        #                 "id": 38199934,
        #                 "price": "3376.14",
        #                 "amount": "0.019384",
        #                 "taker_side": "ASK",
        #                 "created_at": "2019-01-29T06:05:40Z"
        #             }
        #         ]
        #     }
        #
        trades = self.safe_list(response, 'data', [])
        return self.parse_trades(trades, market, since, limit)

    def parse_ohlcv(self, ohlcv, market: Market = None) -> list:
        #
        #     {
        #         "close": "0.021562",
        #         "high": "0.021563",
        #         "low": "0.02156",
        #         "open": "0.021563",
        #         "time": "2019-11-21T07:54:00Z",
        #         "volume": "59.84376"
        #     }
        #
        return [
            self.parse8601(self.safe_string(ohlcv, 'time')),
            self.safe_number(ohlcv, 'open'),
            self.safe_number(ohlcv, 'high'),
            self.safe_number(ohlcv, 'low'),
            self.safe_number(ohlcv, 'close'),
            self.safe_number(ohlcv, 'volume'),
        ]

    async 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://open.big.one/docs/spot_asset_pair_candle.html

        :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
        :param int [params.until]: timestamp in ms of the earliest candle to fetch
        :returns int[][]: A list of candles ordered, open, high, low, close, volume
        """
        await self.load_markets()
        market = self.market(symbol)
        if market['contract']:
            raise NotSupported(self.id + ' fetchOHLCV() can only fetch ohlcvs for spot markets')
        until = self.safe_integer(params, 'until')
        untilIsDefined = (until is not None)
        sinceIsDefined = (since is not None)
        if limit is None:
            limit = 500 if (sinceIsDefined and untilIsDefined) else 100  # default 100, max 500, if since and limit defined then fetch all the candles between them unless it exceeds the max of 500
        request: dict = {
            'asset_pair_name': market['id'],
            'period': self.safe_string(self.timeframes, timeframe, timeframe),
            'limit': limit,
        }
        if sinceIsDefined:
            # start = self.parse_to_int(since / 1000)
            duration = self.parse_timeframe(timeframe)
            endByLimit = self.sum(since, limit * duration * 1000)
            if untilIsDefined:
                request['time'] = self.iso8601(min(endByLimit, until + 1))
            else:
                request['time'] = self.iso8601(endByLimit)
        elif untilIsDefined:
            request['time'] = self.iso8601(until + 1)
        params = self.omit(params, 'until')
        response = await self.publicGetAssetPairsAssetPairNameCandles(self.extend(request, params))
        #
        #     {
        #         "code": 0,
        #         "data": [
        #             {
        #                 "close": "0.021656",
        #                 "high": "0.021658",
        #                 "low": "0.021652",
        #                 "open": "0.021652",
        #                 "time": "2019-11-21T09:30:00Z",
        #                 "volume": "53.08664"
        #             },
        #             {
        #                 "close": "0.021652",
        #                 "high": "0.021656",
        #                 "low": "0.021652",
        #                 "open": "0.021656",
        #                 "time": "2019-11-21T09:29:00Z",
        #                 "volume": "88.39861"
        #             },
        #         ]
        #     }
        #
        data = self.safe_list(response, 'data', [])
        return self.parse_ohlcvs(data, market, timeframe, since, limit)

    def parse_balance(self, response) -> Balances:
        result: dict = {
            'info': response,
            'timestamp': None,
            'datetime': None,
        }
        balances = self.safe_list(response, 'data', [])
        for i in range(0, len(balances)):
            balance = balances[i]
            symbol = self.safe_string(balance, 'asset_symbol')
            code = self.safe_currency_code(symbol)
            account = self.account()
            account['total'] = self.safe_string(balance, 'balance')
            account['used'] = self.safe_string(balance, 'locked_balance')
            result[code] = account
        return self.safe_balance(result)

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

        https://open.big.one/docs/fund_accounts.html
        https://open.big.one/docs/spot_accounts.html

        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: a `balance structure <https://docs.ccxt.com/#/?id=balance-structure>`
        """
        await self.load_markets()
        type = self.safe_string(params, 'type', '')
        params = self.omit(params, 'type')
        response = None
        if type == 'funding' or type == 'fund':
            response = await self.privateGetFundAccounts(params)
        else:
            response = await self.privateGetAccounts(params)
        #
        #     {
        #         "code":0,
        #         "data":[
        #             {"asset_symbol":"NKC","balance":"0","locked_balance":"0"},
        #             {"asset_symbol":"UBTC","balance":"0","locked_balance":"0"},
        #             {"asset_symbol":"READ","balance":"0","locked_balance":"0"},
        #         ],
        #     }
        #
        return self.parse_balance(response)

    def parse_type(self, type: str):
        types: dict = {
            'STOP_LIMIT': 'limit',
            'STOP_MARKET': 'market',
            'LIMIT': 'limit',
            'MARKET': 'market',
        }
        return self.safe_string(types, type, type)

    def parse_order(self, order: dict, market: Market = None) -> Order:
        #
        #    {
        #        "id": "42154072251",
        #        "asset_pair_name": "SOL-USDT",
        #        "price": "20",
        #        "amount": "0.5",
        #        "filled_amount": "0",
        #        "avg_deal_price": "0",
        #        "side": "ASK",
        #        "state": "PENDING",
        #        "created_at": "2023-09-13T03:42:00Z",
        #        "updated_at": "2023-09-13T03:42:00Z",
        #        "type": "LIMIT",
        #        "stop_price": "0",
        #        "immediate_or_cancel": False,
        #        "post_only": False,
        #        "client_order_id": ''
        #    }
        #
        id = self.safe_string(order, 'id')
        marketId = self.safe_string(order, 'asset_pair_name')
        symbol = self.safe_symbol(marketId, market, '-')
        timestamp = self.parse8601(self.safe_string(order, 'created_at'))
        side = self.safe_string(order, 'side')
        if side == 'BID':
            side = 'buy'
        else:
            side = 'sell'
        triggerPrice = self.safe_string(order, 'stop_price')
        if Precise.string_eq(triggerPrice, '0'):
            triggerPrice = None
        immediateOrCancel = self.safe_bool(order, 'immediate_or_cancel')
        timeInForce = None
        if immediateOrCancel:
            timeInForce = 'IOC'
        type = self.parse_type(self.safe_string(order, 'type'))
        price = self.safe_string(order, 'price')
        amount = None
        filled = None
        cost = None
        if type == 'market' and side == 'buy':
            cost = self.safe_string(order, 'filled_amount')
        else:
            amount = self.safe_string(order, 'amount')
            filled = self.safe_string(order, 'filled_amount')
        return self.safe_order({
            'info': order,
            'id': id,
            'clientOrderId': self.safe_string(order, 'client_order_id'),
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'lastTradeTimestamp': self.parse8601(self.safe_string(order, 'updated_at')),
            'symbol': symbol,
            'type': type,
            'timeInForce': timeInForce,
            'postOnly': self.safe_bool(order, 'post_only'),
            'side': side,
            'price': price,
            'triggerPrice': triggerPrice,
            'amount': amount,
            'cost': cost,
            'average': self.safe_string(order, 'avg_deal_price'),
            'filled': filled,
            'remaining': None,
            'status': self.parse_order_status(self.safe_string(order, 'state')),
            'fee': None,
            'trades': None,
        }, market)

    async 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://open.big.one/docs/spot_orders.html#create-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>`
        """
        await self.load_markets()
        market = self.market(symbol)
        if not market['spot']:
            raise NotSupported(self.id + ' createMarketBuyOrderWithCost() supports spot orders only')
        params['createMarketBuyOrderRequiresPrice'] = False
        return await self.create_order(symbol, 'market', 'buy', cost, None, params)

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

        https://open.big.one/docs/spot_orders.html#create-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
        :param float [params.triggerPrice]: the price at which a trigger order is triggered at
        :param bool [params.postOnly]: if True, the order will only be posted to the order book and not executed immediately
        :param str [params.timeInForce]: "GTC", "IOC", or "PO"
        :param float [params.cost]: *spot market buy only* the quote quantity that can be used alternative for the amount

 EXCHANGE SPECIFIC PARAMETERS
        :param str [params.operator]: *stop order only* GTE or LTE(default)
        :param str [params.client_order_id]: must match ^[a-zA-Z0-9-_]{1,36}$ self regex. client_order_id is unique in 24 hours, If created 24 hours later and the order closed, it will be released and can be reused
        :returns dict: an `order structure <https://docs.ccxt.com/#/?id=order-structure>`
        """
        await self.load_markets()
        market = self.market(symbol)
        isBuy = (side == 'buy')
        requestSide = 'BID' if isBuy else 'ASK'
        uppercaseType = type.upper()
        isLimit = uppercaseType == 'LIMIT'
        exchangeSpecificParam = self.safe_bool(params, 'post_only', False)
        postOnly = None
        postOnly, params = self.handle_post_only((uppercaseType == 'MARKET'), exchangeSpecificParam, params)
        triggerPrice = self.safe_string_n(params, ['triggerPrice', 'stopPrice', 'stop_price'])
        request: dict = {
            'asset_pair_name': market['id'],  # asset pair name BTC-USDT, required
            'side': requestSide,  # order side one of "ASK"/"BID", required
            'amount': self.amount_to_precision(symbol, amount),  # order amount, string, required
            # "price": self.price_to_precision(symbol, price),  # order price, string, required
            # "operator": "GTE",  # stop orders only, GTE greater than and equal, LTE less than and equal
            # "immediate_or_cancel": False,  # limit orders only, must be False when post_only is True
            # "post_only": False,  # limit orders only, must be False when immediate_or_cancel is True
        }
        if isLimit or (uppercaseType == 'STOP_LIMIT'):
            request['price'] = self.price_to_precision(symbol, price)
            if isLimit:
                timeInForce = self.safe_string(params, 'timeInForce')
                if timeInForce == 'IOC':
                    request['immediate_or_cancel'] = True
                if postOnly:
                    request['post_only'] = True
            request['amount'] = self.amount_to_precision(symbol, amount)
        else:
            if isBuy:
                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 createMarketBuyOrderRequiresPrice:
                    if (price is None) and (cost 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)
                        quoteAmount = self.parse_to_numeric(Precise.string_mul(amountString, priceString))
                        costRequest = cost if (cost is not None) else quoteAmount
                        request['amount'] = self.cost_to_precision(symbol, costRequest)
                else:
                    request['amount'] = self.cost_to_precision(symbol, amount)
            else:
                request['amount'] = self.amount_to_precision(symbol, amount)
        if triggerPrice is not None:
            request['stop_price'] = self.price_to_precision(symbol, triggerPrice)
            request['operator'] = 'GTE' if isBuy else 'LTE'
            if isLimit:
                uppercaseType = 'STOP_LIMIT'
            elif uppercaseType == 'MARKET':
                uppercaseType = 'STOP_MARKET'
        request['type'] = uppercaseType
        clientOrderId = self.safe_string(params, 'clientOrderId')
        if clientOrderId is not None:
            request['client_order_id'] = clientOrderId
        params = self.omit(params, ['stop_price', 'stopPrice', 'triggerPrice', 'timeInForce', 'clientOrderId'])
        response = await self.privatePostOrders(self.extend(request, params))
        #
        #    {
        #        "id": 10,
        #        "asset_pair_name": "EOS-BTC",
        #        "price": "10.00",
        #        "amount": "10.00",
        #        "filled_amount": "9.0",
        #        "avg_deal_price": "12.0",
        #        "side": "ASK",
        #        "state": "FILLED",
        #        "created_at":"2019-01-29T06:05:56Z",
        #        "updated_at":"2019-01-29T06:05:56Z"
        #    }
        #
        order = self.safe_dict(response, 'data')
        return self.parse_order(order, market)

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

        https://open.big.one/docs/spot_orders.html#cancel-order

        :param str id: order id
        :param str symbol: Not used by bigone cancelOrder()
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: An `order structure <https://docs.ccxt.com/#/?id=order-structure>`
        """
        await self.load_markets()
        request: dict = {'id': id}
        response = await self.privatePostOrdersIdCancel(self.extend(request, params))
        #    {
        #        "id": 10,
        #        "asset_pair_name": "EOS-BTC",
        #        "price": "10.00",
        #        "amount": "10.00",
        #        "filled_amount": "9.0",
        #        "avg_deal_price": "12.0",
        #        "side": "ASK",
        #        "state": "CANCELLED",
        #        "created_at":"2019-01-29T06:05:56Z",
        #        "updated_at":"2019-01-29T06:05:56Z"
        #    }
        order = self.safe_dict(response, 'data')
        return self.parse_order(order)

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

        https://open.big.one/docs/spot_orders.html#cancel-all-orders

        :param str symbol: unified market symbol, only orders in the market of self symbol are cancelled when symbol is not None
        :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>`
        """
        await self.load_markets()
        market = self.market(symbol)
        request: dict = {
            'asset_pair_name': market['id'],
        }
        response = await self.privatePostOrdersCancel(self.extend(request, params))
        #
        #     {
        #         "code":0,
        #         "data": {
        #             "cancelled":[
        #                 58272370,
        #                 58272377
        #             ],
        #             "failed": []
        #         }
        #     }
        #
        data = self.safe_dict(response, 'data', {})
        cancelled = self.safe_list(data, 'cancelled', [])
        failed = self.safe_list(data, 'failed', [])
        result = []
        for i in range(0, len(cancelled)):
            orderId = cancelled[i]
            result.append(self.safe_order({
                'info': orderId,
                'id': orderId,
                'status': 'canceled',
            }))
        for i in range(0, len(failed)):
            orderId = failed[i]
            result.append(self.safe_order({
                'info': orderId,
                'id': orderId,
                'status': 'failed',
            }))
        return result

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

        https://open.big.one/docs/spot_orders.html#get-one-order

        :param str id: the order id
        :param str symbol: not used by bigone fetchOrder
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: An `order structure <https://docs.ccxt.com/#/?id=order-structure>`
        """
        await self.load_markets()
        request: dict = {'id': id}
        response = await self.privateGetOrdersId(self.extend(request, params))
        order = self.safe_dict(response, 'data', {})
        return self.parse_order(order)

    async 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://open.big.one/docs/spot_orders.html#get-user-orders-in-one-asset-pair

        :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>`
        """
        if symbol is None:
            raise ArgumentsRequired(self.id + ' fetchOrders() requires a symbol argument')
        await self.load_markets()
        market = self.market(symbol)
        request: dict = {
            'asset_pair_name': market['id'],
            # 'page_token': 'dxzef',  # request page after self page token
            # 'side': 'ASK',  # 'ASK' or 'BID', optional
            # 'state': 'FILLED',  # 'CANCELLED', 'FILLED', 'PENDING'
            # 'limit' 20,  # default 20, max 200
        }
        if limit is not None:
            request['limit'] = limit  # default 20, max 200
        response = await self.privateGetOrders(self.extend(request, params))
        #
        #    {
        #        "code":0,
        #        "data": [
        #             {
        #                 "id": 10,
        #                 "asset_pair_name": "ETH-BTC",
        #                 "price": "10.00",
        #                 "amount": "10.00",
        #                 "filled_amount": "9.0",
        #                 "avg_deal_price": "12.0",
        #                 "side": "ASK",
        #                 "state": "FILLED",
        #                 "created_at":"2019-01-29T06:05:56Z",
        #                 "updated_at":"2019-01-29T06:05:56Z",
        #             },
        #         ],
        #        "page_token":"dxzef",
        #    }
        #
        orders = self.safe_list(response, 'data', [])
        return self.parse_orders(orders, market, since, limit)

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

        https://open.big.one/docs/spot_trade.html#trades-of-user

        :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 trades 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')
        await self.load_markets()
        market = self.market(symbol)
        request: dict = {
            'asset_pair_name': market['id'],
            # 'page_token': 'dxzef',  # request page after self page token
        }
        if limit is not None:
            request['limit'] = limit  # default 20, max 200
        response = await self.privateGetTrades(self.extend(request, params))
        #
        #     {
        #         "code": 0,
        #         "data": [
        #             {
        #                 "id": 10854280,
        #                 "asset_pair_name": "XIN-USDT",
        #                 "price": "70",
        #                 "amount": "1",
        #                 "taker_side": "ASK",
        #                 "maker_order_id": 58284908,
        #                 "taker_order_id": 58284909,
        #                 "maker_fee": "0.0008",
        #                 "taker_fee": "0.07",
        #                 "side": "SELF_TRADING",
        #                 "inserted_at": "2019-04-16T12:00:01Z"
        #             },
        #             {
        #                 "id": 10854263,
        #                 "asset_pair_name": "XIN-USDT",
        #                 "price": "75.7",
        #                 "amount": "12.743149",
        #                 "taker_side": "BID",
        #                 "maker_order_id": null,
        #                 "taker_order_id": 58284888,
        #                 "maker_fee": null,
        #                 "taker_fee": "0.0025486298",
        #                 "side": "BID",
        #                 "inserted_at": "2019-04-15T06:20:57Z"
        #             }
        #         ],
        #         "page_token":"dxfv"
        #     }
        #
        trades = self.safe_list(response, 'data', [])
        return self.parse_trades(trades, market, since, limit)

    def parse_order_status(self, status: Str):
        statuses: dict = {
            'PENDING': 'open',
            'FILLED': 'closed',
            'CANCELLED': 'canceled',
        }
        return self.safe_string(statuses, status)

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

        https://open.big.one/docs/spot_orders.html#get-user-orders-in-one-asset-pair

        :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 orders 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>`
        """
        request: dict = {
            'state': 'PENDING',
        }
        return await self.fetch_orders(symbol, since, limit, self.extend(request, params))

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

        https://open.big.one/docs/spot_orders.html#get-user-orders-in-one-asset-pair

        :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>`
        """
        request: dict = {
            'state': 'FILLED',
        }
        return await self.fetch_orders(symbol, since, limit, self.extend(request, params))

    def nonce(self):
        exchangeTimeCorrection = self.safe_integer(self.options, 'exchangeMillisecondsCorrection', 0) * 1000000
        return self.sum(self.microseconds() * 1000, exchangeTimeCorrection)

    def sign(self, path, api='public', method='GET', params={}, headers=None, body=None):
        query = self.omit(params, self.extract_params(path))
        baseUrl = self.implode_hostname(self.urls['api'][api])
        url = baseUrl + '/' + self.implode_params(path, params)
        headers = {}
        if api == 'public' or api == 'webExchange' or api == 'contractPublic':
            if query:
                url += '?' + self.urlencode(query)
        else:
            self.check_required_credentials()
            nonce = str(self.nonce())
            request: dict = {
                'type': 'OpenAPIV2',
                'sub': self.apiKey,
                'nonce': nonce,
                # 'recv_window': '30',  # default 30
            }
            token = self.jwt(request, self.encode(self.secret), 'sha256')
            headers['Authorization'] = 'Bearer ' + token
            if method == 'GET':
                if query:
                    url += '?' + self.urlencode(query)
            elif method == 'POST':
                headers['Content-Type'] = 'application/json'
                body = self.json(query)
        headers['User-Agent'] = 'ccxt/' + self.id + '-' + self.version
        return {'url': url, 'method': method, 'body': body, 'headers': headers}

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

        https://open.big.one/docs/spot_deposit.html#get-deposite-address-of-one-asset-of-user

        :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>`
        """
        await self.load_markets()
        currency = self.currency(code)
        request: dict = {
            'asset_symbol': currency['id'],
        }
        networkCode, paramsOmitted = self.handle_network_code_and_params(params)
        response = await self.privateGetAssetsAssetSymbolAddress(self.extend(request, paramsOmitted))
        #
        # the actual response format is not the same documented one
        # the data key contains an array in the actual response
        #
        #     {
        #         "code":0,
        #         "message":"",
        #         "data":[
        #             {
        #                 "id":5521878,
        #                 "chain":"Bitcoin",
        #                 "value":"1GbmyKoikhpiQVZ1C9sbF17mTyvBjeobVe",
        #                 "memo":""
        #             }
        #         ]
        #     }
        #
        data = self.safe_list(response, 'data', [])
        dataLength = len(data)
        if dataLength < 1:
            raise ExchangeError(self.id + ' fetchDepositAddress() returned empty address response')
        chainsIndexedById = self.index_by(data, 'chain')
        selectedNetworkId = self.select_network_id_from_raw_networks(code, networkCode, chainsIndexedById)
        addressObject = self.safe_dict(chainsIndexedById, selectedNetworkId, {})
        address = self.safe_string(addressObject, 'value')
        tag = self.safe_string(addressObject, 'memo')
        self.check_address(address)
        return {
            'info': response,
            'currency': code,
            'network': self.network_id_to_code(selectedNetworkId),
            'address': address,
            'tag': tag,
        }

    def parse_transaction_status(self, status: Str):
        statuses: dict = {
            # what are other statuses here?
            'WITHHOLD': 'ok',  # deposits
            'UNCONFIRMED': 'pending',
            'CONFIRMED': 'ok',  # withdrawals
            'COMPLETED': 'ok',
            'PENDING': 'pending',
        }
        return self.safe_string(statuses, status, status)

    def parse_transaction(self, transaction: dict, currency: Currency = None) -> Transaction:
        #
        # fetchDeposits
        #
        #     {
        #         "amount": "25.0",
        #         "asset_symbol": "BTS"
        #         "confirms": 100,
        #         "id": 5,
        #         "inserted_at": "2018-02-16T11:39:58.000Z",
        #         "is_internal": False,
        #         "kind": "default",
        #         "memo": "",
        #         "state": "WITHHOLD",
        #         "txid": "72e03037d144dae3d32b68b5045462b1049a0755",
        #         "updated_at": "2018-11-09T10:20:09.000Z",
        #     }
        #
        # fetchWithdrawals
        #
        #     {
        #         "amount": "5",
        #         "asset_symbol": "ETH",
        #         "completed_at": "2018-03-15T16:13:45.610463Z",
        #         "customer_id": "10",
        #         "id": 10,
        #         "inserted_at": "2018-03-15T16:13:45.610463Z",
        #         "is_internal": True,
        #         "note": "2018-03-15T16:13:45.610463Z",
        #         "state": "CONFIRMED",
        #         "target_address": "0x4643bb6b393ac20a6175c713175734a72517c63d6f7"
        #         "txid": "0x4643bb6b393ac20a6175c713175734a72517c63d6f73a3ca90a15356f2e967da0",
        #     }
        #
        # withdraw
        #
        #     {
        #         "id":1077391,
        #         "customer_id":1082679,
        #         "amount":"21.9000000000000000",
        #         "txid":"",
        #         "is_internal":false,
        #         "kind":"on_chain",
        #         "state":"PENDING",
        #         "inserted_at":"2020-06-03T00:50:57+00:00",
        #         "updated_at":"2020-06-03T00:50:57+00:00",
        #         "memo":"",
        #         "target_address":"rDYtYT3dBeuw376rvHqoZBKW3UmvguoBAf",
        #         "fee":"0.1000000000000000",
        #         "asset_symbol":"XRP"
        #     }
        #
        currencyId = self.safe_string(transaction, 'asset_symbol')
        code = self.safe_currency_code(currencyId)
        id = self.safe_string(transaction, 'id')
        amount = self.safe_number(transaction, 'amount')
        status = self.parse_transaction_status(self.safe_string(transaction, 'state'))
        timestamp = self.parse8601(self.safe_string(transaction, 'inserted_at'))
        updated = self.parse8601(self.safe_string_2(transaction, 'updated_at', 'completed_at'))
        txid = self.safe_string(transaction, 'txid')
        address = self.safe_string(transaction, 'target_address')
        tag = self.safe_string(transaction, 'memo')
        type = 'withdrawal' if ('customer_id' in transaction) else 'deposit'
        internal = self.safe_bool(transaction, 'is_internal')
        return {
            'info': transaction,
            'id': id,
            'txid': txid,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'network': None,
            'addressFrom': None,
            'address': None,
            'addressTo': address,
            'tagFrom': None,
            'tag': tag,
            'tagTo': None,
            'type': type,
            'amount': amount,
            'currency': code,
            'status': status,
            'updated': updated,
            'fee': None,
            'comment': None,
            'internal': internal,
        }

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

        https://open.big.one/docs/spot_deposit.html#deposit-of-user

        :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>`
        """
        await self.load_markets()
        request: dict = {
            # 'page_token': 'dxzef',  # request page after self page token
            # 'limit': 50,  # optional, default 50
            # 'kind': 'string',  # optional - air_drop, big_holder_dividend, default, eosc_to_eos, internal, equally_airdrop, referral_mining, one_holder_dividend, single_customer, snapshotted_airdrop, trade_mining
            # 'asset_symbol': 'BTC',  # optional
        }
        currency = None
        if code is not None:
            currency = self.currency(code)
            request['asset_symbol'] = currency['id']
        if limit is not None:
            request['limit'] = limit  # default 50
        response = await self.privateGetDeposits(self.extend(request, params))
        #
        #     {
        #         "code": 0,
        #         "page_token": "NQ==",
        #         "data": [
        #             {
        #                 "id": 5,
        #                 "amount": "25.0",
        #                 "confirms": 100,
        #                 "txid": "72e03037d144dae3d32b68b5045462b1049a0755",
        #                 "is_internal": False,
        #                 "inserted_at": "2018-02-16T11:39:58.000Z",
        #                 "updated_at": "2018-11-09T10:20:09.000Z",
        #                 "kind": "default",
        #                 "memo": "",
        #                 "state": "WITHHOLD",
        #                 "asset_symbol": "BTS"
        #             }
        #         ]
        #     }
        #
        deposits = self.safe_list(response, 'data', [])
        return self.parse_transactions(deposits, currency, since, limit)

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

        https://open.big.one/docs/spot_withdrawal.html#get-withdrawals-of-user

        :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>`
        """
        await self.load_markets()
        request: dict = {
            # 'page_token': 'dxzef',  # request page after self page token
            # 'limit': 50,  # optional, default 50
            # 'kind': 'string',  # optional - air_drop, big_holder_dividend, default, eosc_to_eos, internal, equally_airdrop, referral_mining, one_holder_dividend, single_customer, snapshotted_airdrop, trade_mining
            # 'asset_symbol': 'BTC',  # optional
        }
        currency = None
        if code is not None:
            currency = self.currency(code)
            request['asset_symbol'] = currency['id']
        if limit is not None:
            request['limit'] = limit  # default 50
        response = await self.privateGetWithdrawals(self.extend(request, params))
        #
        #     {
        #         "code": 0,
        #         "data": [
        #             {
        #                 "id": 10,
        #                 "customer_id": "10",
        #                 "asset_symbol": "ETH",
        #                 "amount": "5",
        #                 "state": "CONFIRMED",
        #                 "note": "2018-03-15T16:13:45.610463Z",
        #                 "txid": "0x4643bb6b393ac20a6175c713175734a72517c63d6f73a3ca90a15356f2e967da0",
        #                 "completed_at": "2018-03-15T16:13:45.610463Z",
        #                 "inserted_at": "2018-03-15T16:13:45.610463Z",
        #                 "is_internal": True,
        #                 "target_address": "0x4643bb6b393ac20a6175c713175734a72517c63d6f7"
        #             }
        #         ],
        #         "page_token":"dxvf"
        #     }
        #
        withdrawals = self.safe_list(response, 'data', [])
        return self.parse_transactions(withdrawals, currency, since, limit)

    async def transfer(self, code: str, amount: float, fromAccount: str, toAccount: str, params={}) -> TransferEntry:
        """
        transfer currency internally between wallets on the same account

        https://open.big.one/docs/spot_transfer.html#transfer-of-user

        :param str code: unified currency code
        :param float amount: amount to transfer
        :param str fromAccount: 'SPOT', 'FUND', or 'CONTRACT'
        :param str toAccount: 'SPOT', 'FUND', or 'CONTRACT'
        :param dict [params]: extra parameters specific to the exchange API endpoint
        :returns dict: a `transfer structure <https://docs.ccxt.com/#/?id=transfer-structure>`
        """
        await self.load_markets()
        currency = self.currency(code)
        accountsByType = self.safe_dict(self.options, 'accountsByType', {})
        fromId = self.safe_string(accountsByType, fromAccount, fromAccount)
        toId = self.safe_string(accountsByType, toAccount, toAccount)
        guid = self.safe_string(params, 'guid', self.uuid())
        request: dict = {
            'symbol': currency['id'],
            'amount': self.currency_to_precision(code, amount),
            'from': fromId,
            'to': toId,
            'guid': guid,
            # 'type': type,  # NORMAL, MASTER_TO_SUB, SUB_TO_MASTER, SUB_INTERNAL, default is NORMAL
            # 'sub_acccunt': '',  # when type is NORMAL, it should be empty, and when type is others it is required
        }
        response = await self.privatePostTransfer(self.extend(request, params))
        #
        #     {
        #         "code": 0,
        #         "data": null
        #     }
        #
        transfer = self.parse_transfer(response, currency)
        transferOptions = self.safe_dict(self.options, 'transfer', {})
        fillResponseFromRequest = self.safe_bool(transferOptions, 'fillResponseFromRequest', True)
        if fillResponseFromRequest:
            transfer['fromAccount'] = fromAccount
            transfer['toAccount'] = toAccount
            transfer['amount'] = amount
            transfer['id'] = guid
        return transfer

    def parse_transfer(self, transfer: dict, currency: Currency = None) -> TransferEntry:
        #
        #     {
        #         "code": 0,
        #         "data": null
        #     }
        #
        code = self.safe_string(transfer, 'code')
        return {
            'info': transfer,
            'id': None,
            'timestamp': None,
            'datetime': None,
            'currency': None,
            'amount': None,
            'fromAccount': None,
            'toAccount': None,
            'status': self.parse_transfer_status(code),
        }

    def parse_transfer_status(self, status: Str) -> Str:
        statuses: dict = {
            '0': 'ok',
        }
        return self.safe_string(statuses, status, 'failed')

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

        https://open.big.one/docs/spot_withdrawal.html#create-withdrawal-of-user

        :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)
        await self.load_markets()
        currency = self.currency(code)
        request: dict = {
            'symbol': currency['id'],
            'target_address': address,
            'amount': self.currency_to_precision(code, amount),
        }
        if tag is not None:
            request['memo'] = tag
        networkCode = None
        networkCode, params = self.handle_network_code_and_params(params)
        if networkCode is not None:
            request['gateway_name'] = self.network_code_to_id(networkCode)
        # requires write permission on the wallet
        response = await self.privatePostWithdrawals(self.extend(request, params))
        #
        #     {
        #         "code":0,
        #         "message":"",
        #         "data":{
        #             "id":1077391,
        #             "customer_id":1082679,
        #             "amount":"21.9000000000000000",
        #             "txid":"",
        #             "is_internal":false,
        #             "kind":"on_chain",
        #             "state":"PENDING",
        #             "inserted_at":"2020-06-03T00:50:57+00:00",
        #             "updated_at":"2020-06-03T00:50:57+00:00",
        #             "memo":"",
        #             "target_address":"rDYtYT3dBeuw376rvHqoZBKW3UmvguoBAf",
        #             "fee":"0.1000000000000000",
        #             "asset_symbol":"XRP"
        #         }
        #     }
        #
        data = self.safe_dict(response, 'data', {})
        return self.parse_transaction(data, currency)

    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  # fallback to default error handler
        #
        #      {"code":10013,"message":"Resource not found"}
        #      {"code":40004,"message":"invalid jwt"}
        #
        code = self.safe_string(response, 'code')
        message = self.safe_string(response, 'message')
        if (code != '0') and (code is not None):
            feedback = self.id + ' ' + body
            self.throw_exactly_matched_exception(self.exceptions['exact'], message, feedback)
            self.throw_exactly_matched_exception(self.exceptions['exact'], code, feedback)
            self.throw_broadly_matched_exception(self.exceptions['broad'], message, feedback)
            raise ExchangeError(feedback)  # unknown message
        return None
