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

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

from ccxt.base.exchange import Exchange
from ccxt.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 InsufficientFunds
from ccxt.base.errors import InvalidOrder
from ccxt.base.errors import OrderNotFound
from ccxt.base.errors import RateLimitExceeded
from ccxt.base.errors import InvalidNonce
from ccxt.base.decimal_to_precision import TICK_SIZE


class bybit(Exchange):

    def describe(self):
        return self.deep_extend(super(bybit, self).describe(), {
            'id': 'bybit',
            'name': 'Bybit',
            'countries': ['VG'],  # British Virgin Islands
            'version': 'v2',
            'userAgent': None,
            'rateLimit': 100,
            'hostname': 'bybit.com',  # bybit.com, bytick.com
            'has': {
                'cancelOrder': True,
                'CORS': True,
                'cancelAllOrders': True,
                'createOrder': True,
                'editOrder': True,
                'fetchBalance': True,
                'fetchClosedOrders': True,
                'fetchDeposits': True,
                'fetchLedger': True,
                'fetchMarkets': True,
                'fetchMyTrades': True,
                'fetchOHLCV': True,
                'fetchOpenOrders': True,
                'fetchOrder': True,
                'fetchOrderBook': True,
                'fetchOrders': True,
                'fetchOrderTrades': True,
                'fetchTicker': True,
                'fetchTickers': True,
                'fetchTime': True,
                'fetchTrades': True,
                'fetchTransactions': False,
                'fetchWithdrawals': True,
            },
            'timeframes': {
                '1m': '1',
                '3m': '3',
                '5m': '5',
                '15m': '15',
                '30m': '30',
                '1h': '60',
                '2h': '120',
                '4h': '240',
                '6h': '360',
                '12h': '720',
                '1d': 'D',
                '1w': 'W',
                '1M': 'M',
                '1y': 'Y',
            },
            'urls': {
                'test': 'https://api-testnet.{hostname}',
                'logo': 'https://user-images.githubusercontent.com/51840849/76547799-daff5b80-649e-11ea-87fb-3be9bac08954.jpg',
                'api': 'https://api.{hostname}',
                'www': 'https://www.bybit.com',
                'doc': [
                    'https://bybit-exchange.github.io/docs/inverse/',
                    'https://bybit-exchange.github.io/docs/linear/',
                    'https://github.com/bybit-exchange',
                ],
                'fees': 'https://help.bybit.com/hc/en-us/articles/360039261154',
                'referral': 'https://www.bybit.com/app/register?ref=X7Prm',
            },
            'api': {
                'v2': {
                    'public': {
                        'get': [
                            'orderBook/L2',
                            'kline/list',
                            'tickers',
                            'trading-records',
                            'symbols',
                            'liq-records',
                            'mark-price-kline',
                            'index-price-kline',
                            'premium-index-kline',
                            'open-interest',
                            'big-deal',
                            'account-ratio',
                            'time',
                            'announcement',
                        ],
                    },
                    'private': {
                        'get': [
                            'order/list',
                            'order',
                            'stop-order/list',
                            'stop-order',
                            'position/list',
                            'execution/list',
                            'trade/closed-pnl/list',
                            'funding/prev-funding-rate',
                            'funding/prev-funding',
                            'funding/predicted-funding',
                            'account/api-key',
                            'account/lcp',
                            'wallet/balance',
                            'wallet/fund/records',
                            'wallet/withdraw/list',
                            'exchange-order/list',
                        ],
                        'post': [
                            'order/create',
                            'order/cancel',
                            'order/cancelAll',
                            'order/replace',
                            'stop-order/create',
                            'stop-order/cancel',
                            'stop-order/cancelAll',
                            'stop-order/replace',
                            'position/change-position-margin',
                            'position/trading-stop',
                            'position/leverage/save',
                        ],
                    },
                },
                'public': {
                    'linear': {
                        'get': [
                            'kline',
                            'recent-trading-records',
                            'funding/prev-funding-rate',
                            'mark-price-kline',
                            'index-price-kline',
                            'premium-index-kline',
                            'risk-limit',
                        ],
                    },
                },
                'private': {
                    'linear': {
                        'get': [
                            'order/list',
                            'order/search',
                            'stop-order/list',
                            'stop-order/search',
                            'position/list',
                            'trade/execution/list',
                            'trade/closed-pnl/list',
                            'funding/predicted-funding',
                            'funding/prev-funding',
                        ],
                        'post': [
                            'order/create',
                            'order/cancel',
                            'order/cancel-all',
                            'order/replace',
                            'stop-order/create',
                            'stop-order/cancel',
                            'stop-order/cancel-all',
                            'stop-order/replace',
                            'position/set-auto-add-margin',
                            'position/switch-isolated',
                            'tpsl/switch-mode',
                            'position/add-margin',
                            'position/set-leverage',
                            'position/trading-stop',
                        ],
                    },
                },
                'openapi': {
                    'wallet': {
                        'get': [
                            'risk-limit/list',
                        ],
                        'post': [
                            'risk-limit',
                        ],
                    },
                },
            },
            'httpExceptions': {
                '403': RateLimitExceeded,  # Forbidden -- You request too many times
            },
            'exceptions': {
                'exact': {
                    '10001': BadRequest,  # parameter error
                    '10002': InvalidNonce,  # request expired, check your timestamp and recv_window
                    '10003': AuthenticationError,  # Invalid apikey
                    '10004': AuthenticationError,  # invalid sign
                    '10005': PermissionDenied,  # permission denied for current apikey
                    '10006': RateLimitExceeded,  # too many requests
                    '10007': AuthenticationError,  # api_key not found in your request parameters
                    '10010': PermissionDenied,  # request ip mismatch
                    '10017': BadRequest,  # request path not found or request method is invalid
                    '20001': OrderNotFound,  # Order not exists
                    '20003': InvalidOrder,  # missing parameter side
                    '20004': InvalidOrder,  # invalid parameter side
                    '20005': InvalidOrder,  # missing parameter symbol
                    '20006': InvalidOrder,  # invalid parameter symbol
                    '20007': InvalidOrder,  # missing parameter order_type
                    '20008': InvalidOrder,  # invalid parameter order_type
                    '20009': InvalidOrder,  # missing parameter qty
                    '20010': InvalidOrder,  # qty must be greater than 0
                    '20011': InvalidOrder,  # qty must be an integer
                    '20012': InvalidOrder,  # qty must be greater than zero and less than 1 million
                    '20013': InvalidOrder,  # missing parameter price
                    '20014': InvalidOrder,  # price must be greater than 0
                    '20015': InvalidOrder,  # missing parameter time_in_force
                    '20016': InvalidOrder,  # invalid value for parameter time_in_force
                    '20017': InvalidOrder,  # missing parameter order_id
                    '20018': InvalidOrder,  # invalid date format
                    '20019': InvalidOrder,  # missing parameter stop_px
                    '20020': InvalidOrder,  # missing parameter base_price
                    '20021': InvalidOrder,  # missing parameter stop_order_id
                    '20022': BadRequest,  # missing parameter leverage
                    '20023': BadRequest,  # leverage must be a number
                    '20031': BadRequest,  # leverage must be greater than zero
                    '20070': BadRequest,  # missing parameter margin
                    '20071': BadRequest,  # margin must be greater than zero
                    '20084': BadRequest,  # order_id or order_link_id is required
                    '30001': BadRequest,  # order_link_id is repeated
                    '30003': InvalidOrder,  # qty must be more than the minimum allowed
                    '30004': InvalidOrder,  # qty must be less than the maximum allowed
                    '30005': InvalidOrder,  # price exceeds maximum allowed
                    '30007': InvalidOrder,  # price exceeds minimum allowed
                    '30008': InvalidOrder,  # invalid order_type
                    '30009': ExchangeError,  # no position found
                    '30010': InsufficientFunds,  # insufficient wallet balance
                    '30011': PermissionDenied,  # operation not allowed as position is undergoing liquidation
                    '30012': PermissionDenied,  # operation not allowed as position is undergoing ADL
                    '30013': PermissionDenied,  # position is in liq or adl status
                    '30014': InvalidOrder,  # invalid closing order, qty should not greater than size
                    '30015': InvalidOrder,  # invalid closing order, side should be opposite
                    '30016': ExchangeError,  # TS and SL must be cancelled first while closing position
                    '30017': InvalidOrder,  # estimated fill price cannot be lower than current Buy liq_price
                    '30018': InvalidOrder,  # estimated fill price cannot be higher than current Sell liq_price
                    '30019': InvalidOrder,  # cannot attach TP/SL params for non-zero position when placing non-opening position order
                    '30020': InvalidOrder,  # position already has TP/SL params
                    '30021': InvalidOrder,  # cannot afford estimated position_margin
                    '30022': InvalidOrder,  # estimated buy liq_price cannot be higher than current mark_price
                    '30023': InvalidOrder,  # estimated sell liq_price cannot be lower than current mark_price
                    '30024': InvalidOrder,  # cannot set TP/SL/TS for zero-position
                    '30025': InvalidOrder,  # trigger price should bigger than 10% of last price
                    '30026': InvalidOrder,  # price too high
                    '30027': InvalidOrder,  # price set for Take profit should be higher than Last Traded Price
                    '30028': InvalidOrder,  # price set for Stop loss should be between Liquidation price and Last Traded Price
                    '30029': InvalidOrder,  # price set for Stop loss should be between Last Traded Price and Liquidation price
                    '30030': InvalidOrder,  # price set for Take profit should be lower than Last Traded Price
                    '30031': InsufficientFunds,  # insufficient available balance for order cost
                    '30032': InvalidOrder,  # order has been filled or cancelled
                    '30033': RateLimitExceeded,  # The number of stop orders exceeds maximum limit allowed
                    '30034': OrderNotFound,  # no order found
                    '30035': RateLimitExceeded,  # too fast to cancel
                    '30036': ExchangeError,  # the expected position value after order execution exceeds the current risk limit
                    '30037': InvalidOrder,  # order already cancelled
                    '30041': ExchangeError,  # no position found
                    '30042': InsufficientFunds,  # insufficient wallet balance
                    '30043': PermissionDenied,  # operation not allowed as position is undergoing liquidation
                    '30044': PermissionDenied,  # operation not allowed as position is undergoing AD
                    '30045': PermissionDenied,  # operation not allowed as position is not normal status
                    '30049': InsufficientFunds,  # insufficient available balance
                    '30050': ExchangeError,  # any adjustments made will trigger immediate liquidation
                    '30051': ExchangeError,  # due to risk limit, cannot adjust leverage
                    '30052': ExchangeError,  # leverage can not less than 1
                    '30054': ExchangeError,  # position margin is invalid
                    '30057': ExchangeError,  # requested quantity of contracts exceeds risk limit
                    '30063': ExchangeError,  # reduce-only rule not satisfied
                    '30067': InsufficientFunds,  # insufficient available balance
                    '30068': ExchangeError,  # exit value must be positive
                    '34026': ExchangeError,  # the limit is no change
                },
                'broad': {
                    'unknown orderInfo': OrderNotFound,  # {"ret_code":-1,"ret_msg":"unknown orderInfo","ext_code":"","ext_info":"","result":null,"time_now":"1584030414.005545","rate_limit_status":99,"rate_limit_reset_ms":1584030414003,"rate_limit":100}
                    'invalid api_key': AuthenticationError,  # {"ret_code":10003,"ret_msg":"invalid api_key","ext_code":"","ext_info":"","result":null,"time_now":"1599547085.415797"}
                },
            },
            'precisionMode': TICK_SIZE,
            'options': {
                'marketTypes': {
                    'BTC/USDT': 'linear',
                    'BCH/USDT': 'linear',
                    'ETH/USDT': 'linear',
                    'LTC/USDT': 'linear',
                    'XTZ/USDT': 'linear',
                    'LINK/USDT': 'linear',
                },
                'code': 'BTC',
                'cancelAllOrders': {
                    # 'method': 'v2PrivatePostOrderCancelAll',  # v2PrivatePostStopOrderCancelAll
                },
                'recvWindow': 5 * 1000,  # 5 sec default
                'timeDifference': 0,  # the difference between system clock and Binance clock
                'adjustForTimeDifference': False,  # controls the adjustment logic upon instantiation
            },
            'fees': {
                'trading': {
                    'tierBased': False,
                    'percentage': True,
                    'taker': 0.00075,
                    'maker': -0.00025,
                },
                'funding': {
                    'tierBased': False,
                    'percentage': False,
                    'withdraw': {},
                    'deposit': {},
                },
            },
        })

    def nonce(self):
        return self.milliseconds() - self.options['timeDifference']

    def load_time_difference(self, params={}):
        serverTime = self.fetch_time(params)
        after = self.milliseconds()
        self.options['timeDifference'] = after - serverTime
        return self.options['timeDifference']

    def fetch_time(self, params={}):
        response = self.v2PublicGetTime(params)
        #
        #     {
        #         ret_code: 0,
        #         ret_msg: 'OK',
        #         ext_code: '',
        #         ext_info: '',
        #         result: {},
        #         time_now: '1583933682.448826'
        #     }
        #
        return self.safe_timestamp(response, 'time_now')

    def fetch_markets(self, params={}):
        if self.options['adjustForTimeDifference']:
            self.load_time_difference()
        response = self.v2PublicGetSymbols(params)
        #
        #     {
        #         "ret_code":0,
        #         "ret_msg":"OK",
        #         "ext_code":"",
        #         "ext_info":"",
        #         "result":[
        #             {
        #                 "name":"BTCUSD",
        #                 "alias":"BTCUSD",
        #                 "status":"Trading",
        #                 "base_currency":"BTC",
        #                 "quote_currency":"USD",
        #                 "price_scale":2,
        #                 "taker_fee":"0.00075",
        #                 "maker_fee":"-0.00025",
        #                 "leverage_filter":{"min_leverage":1,"max_leverage":100,"leverage_step":"0.01"},
        #                 "price_filter":{"min_price":"0.5","max_price":"999999.5","tick_size":"0.5"},
        #                 "lot_size_filter":{"max_trading_qty":1000000,"min_trading_qty":1,"qty_step":1}
        #             },
        #             {
        #                 "name":"BTCUSDT",
        #                 "alias":"BTCUSDT",
        #                 "status":"Trading",
        #                 "base_currency":"BTC",
        #                 "quote_currency":"USDT",
        #                 "price_scale":2,
        #                 "taker_fee":"0.00075",
        #                 "maker_fee":"-0.00025",
        #                 "leverage_filter":{"min_leverage":1,"max_leverage":100,"leverage_step":"0.01"},
        #                 "price_filter":{"min_price":"0.5","max_price":"999999.5","tick_size":"0.5"},
        #                 "lot_size_filter":{"max_trading_qty":100,"min_trading_qty":0.001,"qty_step":0.001}
        #             },
        #         ],
        #         "time_now":"1610539664.818033"
        #     }
        #
        markets = self.safe_value(response, 'result', [])
        options = self.safe_value(self.options, 'fetchMarkets', {})
        linearQuoteCurrencies = self.safe_value(options, 'linear', {'USDT': True})
        result = []
        for i in range(0, len(markets)):
            market = markets[i]
            id = self.safe_string_2(market, 'name', 'symbol')
            baseId = self.safe_string(market, 'base_currency')
            quoteId = self.safe_string(market, 'quote_currency')
            base = self.safe_currency_code(baseId)
            quote = self.safe_currency_code(quoteId)
            linear = (quote in linearQuoteCurrencies)
            inverse = not linear
            symbol = base + '/' + quote
            baseQuote = base + quote
            if baseQuote != id:
                symbol = id
            lotSizeFilter = self.safe_value(market, 'lot_size_filter', {})
            priceFilter = self.safe_value(market, 'price_filter', {})
            precision = {
                'amount': self.safe_float(lotSizeFilter, 'qty_step'),
                'price': self.safe_float(priceFilter, 'tick_size'),
            }
            status = self.safe_string(market, 'status')
            active = None
            if status is not None:
                active = (status == 'Trading')
            result.append({
                'id': id,
                'symbol': symbol,
                'base': base,
                'quote': quote,
                'active': active,
                'precision': precision,
                'taker': self.safe_float(market, 'taker_fee'),
                'maker': self.safe_float(market, 'maker_fee'),
                'type': 'future',
                'spot': False,
                'future': True,
                'option': False,
                'linear': linear,
                'inverse': inverse,
                'limits': {
                    'amount': {
                        'min': self.safe_float(lotSizeFilter, 'min_trading_qty'),
                        'max': self.safe_float(lotSizeFilter, 'max_trading_qty'),
                    },
                    'price': {
                        'min': self.safe_float(priceFilter, 'min_price'),
                        'max': self.safe_float(priceFilter, 'max_price'),
                    },
                    'cost': {
                        'min': None,
                        'max': None,
                    },
                },
                'info': market,
            })
        return result

    def parse_ticker(self, ticker, market=None):
        #
        # fetchTicker
        #
        #     {
        #         symbol: 'BTCUSD',
        #         bid_price: '7680',
        #         ask_price: '7680.5',
        #         last_price: '7680.00',
        #         last_tick_direction: 'MinusTick',
        #         prev_price_24h: '7870.50',
        #         price_24h_pcnt: '-0.024204',
        #         high_price_24h: '8035.00',
        #         low_price_24h: '7671.00',
        #         prev_price_1h: '7780.00',
        #         price_1h_pcnt: '-0.012853',
        #         mark_price: '7683.27',
        #         index_price: '7682.74',
        #         open_interest: 188829147,
        #         open_value: '23670.06',
        #         total_turnover: '25744224.90',
        #         turnover_24h: '102997.83',
        #         total_volume: 225448878806,
        #         volume_24h: 809919408,
        #         funding_rate: '0.0001',
        #         predicted_funding_rate: '0.0001',
        #         next_funding_time: '2020-03-12T00:00:00Z',
        #         countdown_hour: 7
        #     }
        #
        timestamp = None
        marketId = self.safe_string(ticker, 'symbol')
        symbol = self.safe_symbol(marketId, market)
        last = self.safe_float(ticker, 'last_price')
        open = self.safe_float(ticker, 'prev_price_24h')
        percentage = self.safe_float(ticker, 'price_24h_pcnt')
        if percentage is not None:
            percentage *= 100
        change = None
        average = None
        if (last is not None) and (open is not None):
            change = last - open
            average = self.sum(open, last) / 2
        baseVolume = self.safe_float(ticker, 'turnover_24h')
        quoteVolume = self.safe_float(ticker, 'volume_24h')
        vwap = self.vwap(baseVolume, quoteVolume)
        return {
            'symbol': symbol,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'high': self.safe_float(ticker, 'high_price_24h'),
            'low': self.safe_float(ticker, 'low_price_24h'),
            'bid': self.safe_float(ticker, 'bid_price'),
            'bidVolume': None,
            'ask': self.safe_float(ticker, 'ask_price'),
            'askVolume': None,
            'vwap': vwap,
            'open': open,
            'close': last,
            'last': last,
            'previousClose': None,
            'change': change,
            'percentage': percentage,
            'average': average,
            'baseVolume': baseVolume,
            'quoteVolume': quoteVolume,
            'info': ticker,
        }

    def fetch_ticker(self, symbol, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {
            'symbol': market['id'],
        }
        response = self.v2PublicGetTickers(self.extend(request, params))
        #
        #     {
        #         ret_code: 0,
        #         ret_msg: 'OK',
        #         ext_code: '',
        #         ext_info: '',
        #         result: [
        #             {
        #                 symbol: 'BTCUSD',
        #                 bid_price: '7680',
        #                 ask_price: '7680.5',
        #                 last_price: '7680.00',
        #                 last_tick_direction: 'MinusTick',
        #                 prev_price_24h: '7870.50',
        #                 price_24h_pcnt: '-0.024204',
        #                 high_price_24h: '8035.00',
        #                 low_price_24h: '7671.00',
        #                 prev_price_1h: '7780.00',
        #                 price_1h_pcnt: '-0.012853',
        #                 mark_price: '7683.27',
        #                 index_price: '7682.74',
        #                 open_interest: 188829147,
        #                 open_value: '23670.06',
        #                 total_turnover: '25744224.90',
        #                 turnover_24h: '102997.83',
        #                 total_volume: 225448878806,
        #                 volume_24h: 809919408,
        #                 funding_rate: '0.0001',
        #                 predicted_funding_rate: '0.0001',
        #                 next_funding_time: '2020-03-12T00:00:00Z',
        #                 countdown_hour: 7
        #             }
        #         ],
        #         time_now: '1583948195.818255'
        #     }
        #
        result = self.safe_value(response, 'result', [])
        first = self.safe_value(result, 0)
        timestamp = self.safe_timestamp(response, 'time_now')
        ticker = self.parse_ticker(first, market)
        ticker['timestamp'] = timestamp
        ticker['datetime'] = self.iso8601(timestamp)
        return ticker

    def fetch_tickers(self, symbols=None, params={}):
        self.load_markets()
        response = self.v2PublicGetTickers(params)
        #
        #     {
        #         ret_code: 0,
        #         ret_msg: 'OK',
        #         ext_code: '',
        #         ext_info: '',
        #         result: [
        #             {
        #                 symbol: 'BTCUSD',
        #                 bid_price: '7680',
        #                 ask_price: '7680.5',
        #                 last_price: '7680.00',
        #                 last_tick_direction: 'MinusTick',
        #                 prev_price_24h: '7870.50',
        #                 price_24h_pcnt: '-0.024204',
        #                 high_price_24h: '8035.00',
        #                 low_price_24h: '7671.00',
        #                 prev_price_1h: '7780.00',
        #                 price_1h_pcnt: '-0.012853',
        #                 mark_price: '7683.27',
        #                 index_price: '7682.74',
        #                 open_interest: 188829147,
        #                 open_value: '23670.06',
        #                 total_turnover: '25744224.90',
        #                 turnover_24h: '102997.83',
        #                 total_volume: 225448878806,
        #                 volume_24h: 809919408,
        #                 funding_rate: '0.0001',
        #                 predicted_funding_rate: '0.0001',
        #                 next_funding_time: '2020-03-12T00:00:00Z',
        #                 countdown_hour: 7
        #             }
        #         ],
        #         time_now: '1583948195.818255'
        #     }
        #
        result = self.safe_value(response, 'result', [])
        tickers = {}
        for i in range(0, len(result)):
            ticker = self.parse_ticker(result[i])
            symbol = ticker['symbol']
            tickers[symbol] = ticker
        return self.filter_by_array(tickers, 'symbol', symbols)

    def parse_ohlcv(self, ohlcv, market=None):
        #
        # inverse perpetual BTC/USD
        #
        #     {
        #         symbol: 'BTCUSD',
        #         interval: '1',
        #         open_time: 1583952540,
        #         open: '7760.5',
        #         high: '7764',
        #         low: '7757',
        #         close: '7763.5',
        #         volume: '1259766',
        #         turnover: '162.32773718999994'
        #     }
        #
        # linear perpetual BTC/USDT
        #
        #     {
        #         "id":143536,
        #         "symbol":"BTCUSDT",
        #         "period":"15",
        #         "start_at":1587883500,
        #         "volume":1.035,
        #         "open":7540.5,
        #         "high":7541,
        #         "low":7540.5,
        #         "close":7541
        #     }
        #
        return [
            self.safe_timestamp_2(ohlcv, 'open_time', 'start_at'),
            self.safe_float(ohlcv, 'open'),
            self.safe_float(ohlcv, 'high'),
            self.safe_float(ohlcv, 'low'),
            self.safe_float(ohlcv, 'close'),
            self.safe_float_2(ohlcv, 'turnover', 'volume'),
        ]

    def fetch_ohlcv(self, symbol, timeframe='1m', since=None, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {
            'symbol': market['id'],
            'interval': self.timeframes[timeframe],
        }
        duration = self.parse_timeframe(timeframe)
        now = self.seconds()
        if since is None:
            if limit is None:
                raise ArgumentsRequired(self.id + ' fetchOHLCV() requires a since argument or a limit argument')
            else:
                request['from'] = now - limit * duration
        else:
            request['from'] = int(since / 1000)
        if limit is not None:
            request['limit'] = limit  # max 200, default 200
        marketTypes = self.safe_value(self.options, 'marketTypes', {})
        marketType = self.safe_string(marketTypes, symbol)
        method = 'publicLinearGetKline' if (marketType == 'linear') else 'v2PublicGetKlineList'
        response = getattr(self, method)(self.extend(request, params))
        #
        # inverse perpetual BTC/USD
        #
        #     {
        #         ret_code: 0,
        #         ret_msg: 'OK',
        #         ext_code: '',
        #         ext_info: '',
        #         result: [
        #             {
        #                 symbol: 'BTCUSD',
        #                 interval: '1',
        #                 open_time: 1583952540,
        #                 open: '7760.5',
        #                 high: '7764',
        #                 low: '7757',
        #                 close: '7763.5',
        #                 volume: '1259766',
        #                 turnover: '162.32773718999994'
        #             },
        #         ],
        #         time_now: '1583953082.397330'
        #     }
        #
        # linear perpetual BTC/USDT
        #
        #     {
        #         "ret_code":0,
        #         "ret_msg":"OK",
        #         "ext_code":"",
        #         "ext_info":"",
        #         "result":[
        #             {
        #                 "id":143536,
        #                 "symbol":"BTCUSDT",
        #                 "period":"15",
        #                 "start_at":1587883500,
        #                 "volume":1.035,
        #                 "open":7540.5,
        #                 "high":7541,
        #                 "low":7540.5,
        #                 "close":7541
        #             }
        #         ],
        #         "time_now":"1587884120.168077"
        #     }
        #
        result = self.safe_value(response, 'result', {})
        return self.parse_ohlcvs(result, market, timeframe, since, limit)

    def parse_trade(self, trade, market=None):
        #
        # fetchTrades(public)
        #
        #     {
        #         id: 43785688,
        #         symbol: 'BTCUSD',
        #         price: 7786,
        #         qty: 67,
        #         side: 'Sell',
        #         time: '2020-03-11T19:18:30.123Z'
        #     }
        #
        # fetchMyTrades, fetchOrderTrades(private)
        #
        #     {
        #         "closed_size": 0,
        #         "cross_seq": 277136382,
        #         "exec_fee": "0.0000001",
        #         "exec_id": "256e5ef8-abfe-5772-971b-f944e15e0d68",
        #         "exec_price": "8178.5",
        #         "exec_qty": 1,
        #         # the docs say the exec_time field is "abandoned" now
        #         # the user should use "trade_time_ms"
        #         "exec_time": "1571676941.70682",
        #         "exec_type": "Trade",  #Exec Type Enum
        #         "exec_value": "0.00012227",
        #         "fee_rate": "0.00075",
        #         "last_liquidity_ind": "RemovedLiquidity",  #Liquidity Enum
        #         "leaves_qty": 0,
        #         "nth_fill": 2,
        #         "order_id": "7ad50cb1-9ad0-4f74-804b-d82a516e1029",
        #         "order_link_id": "",
        #         "order_price": "8178",
        #         "order_qty": 1,
        #         "order_type": "Market",  #Order Type Enum
        #         "side": "Buy",  #Side Enum
        #         "symbol": "BTCUSD",  #Symbol Enum
        #         "user_id": 1,
        #         "trade_time_ms": 1577480599000
        #     }
        #
        id = self.safe_string_2(trade, 'id', 'exec_id')
        marketId = self.safe_string(trade, 'symbol')
        market = self.safe_market(marketId, market)
        symbol = market['symbol']
        amount = self.safe_float_2(trade, 'qty', 'exec_qty')
        cost = self.safe_float(trade, 'exec_value')
        price = self.safe_float_2(trade, 'exec_price', 'price')
        if cost is None:
            if amount is not None:
                if price is not None:
                    cost = amount * price
        timestamp = self.parse8601(self.safe_string(trade, 'time'))
        if timestamp is None:
            timestamp = self.safe_integer(trade, 'trade_time_ms')
        side = self.safe_string_lower(trade, 'side')
        lastLiquidityInd = self.safe_string(trade, 'last_liquidity_ind')
        takerOrMaker = 'maker' if (lastLiquidityInd == 'AddedLiquidity') else 'taker'
        feeCost = self.safe_float(trade, 'exec_fee')
        fee = None
        if feeCost is not None:
            feeCurrencyCode = market['base'] if market['inverse'] else market['quote']
            fee = {
                'cost': feeCost,
                'currency': feeCurrencyCode,
                'rate': self.safe_float(trade, 'fee_rate'),
            }
        return {
            'id': id,
            'info': trade,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'symbol': symbol,
            'order': self.safe_string(trade, 'order_id'),
            'type': self.safe_string_lower(trade, 'order_type'),
            'side': side,
            'takerOrMaker': takerOrMaker,
            'price': price,
            'amount': amount,
            'cost': cost,
            'fee': fee,
        }

    def fetch_trades(self, symbol, since=None, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {
            'symbol': market['id'],
            # 'from': 123,  # from id
        }
        if limit is not None:
            request['count'] = limit  # default 500, max 1000
        marketTypes = self.safe_value(self.options, 'marketTypes', {})
        marketType = self.safe_string(marketTypes, symbol)
        method = 'publicLinearGetRecentTradingRecords' if (marketType == 'linear') else 'v2PublicGetTradingRecords'
        response = getattr(self, method)(self.extend(request, params))
        #
        #     {
        #         ret_code: 0,
        #         ret_msg: 'OK',
        #         ext_code: '',
        #         ext_info: '',
        #         result: [
        #             {
        #                 id: 43785688,
        #                 symbol: 'BTCUSD',
        #                 price: 7786,
        #                 qty: 67,
        #                 side: 'Sell',
        #                 time: '2020-03-11T19:18:30.123Z'
        #             },
        #         ],
        #         time_now: '1583954313.393362'
        #     }
        #
        result = self.safe_value(response, 'result', {})
        return self.parse_trades(result, market, since, limit)

    def parse_order_book(self, orderbook, timestamp=None, bidsKey='Buy', asksKey='Sell', priceKey='price', amountKey='size'):
        bids = []
        asks = []
        for i in range(0, len(orderbook)):
            bidask = orderbook[i]
            side = self.safe_string(bidask, 'side')
            if side == 'Buy':
                bids.append(self.parse_bid_ask(bidask, priceKey, amountKey))
            elif side == 'Sell':
                asks.append(self.parse_bid_ask(bidask, priceKey, amountKey))
            else:
                raise ExchangeError(self.id + ' parseOrderBook encountered an unrecognized bidask format: ' + self.json(bidask))
        return {
            'bids': self.sort_by(bids, 0, True),
            'asks': self.sort_by(asks, 0),
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'nonce': None,
        }

    def fetch_order_book(self, symbol, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {
            'symbol': market['id'],
        }
        response = self.v2PublicGetOrderBookL2(self.extend(request, params))
        #
        #     {
        #         ret_code: 0,
        #         ret_msg: 'OK',
        #         ext_code: '',
        #         ext_info: '',
        #         result: [
        #             {symbol: 'BTCUSD', price: '7767.5', size: 677956, side: 'Buy'},
        #             {symbol: 'BTCUSD', price: '7767', size: 580690, side: 'Buy'},
        #             {symbol: 'BTCUSD', price: '7766.5', size: 475252, side: 'Buy'},
        #             {symbol: 'BTCUSD', price: '7768', size: 330847, side: 'Sell'},
        #             {symbol: 'BTCUSD', price: '7768.5', size: 97159, side: 'Sell'},
        #             {symbol: 'BTCUSD', price: '7769', size: 6508, side: 'Sell'},
        #         ],
        #         time_now: '1583954829.874823'
        #     }
        #
        result = self.safe_value(response, 'result', [])
        timestamp = self.safe_timestamp(response, 'time_now')
        return self.parse_order_book(result, timestamp, 'Buy', 'Sell', 'price', 'size')

    def fetch_balance(self, params={}):
        self.load_markets()
        request = {}
        coin = self.safe_string(params, 'coin')
        code = self.safe_string(params, 'code')
        if coin is not None:
            request['coin'] = coin
        elif code is not None:
            currency = self.currency(code)
            request['coin'] = currency['id']
        response = self.v2PrivateGetWalletBalance(self.extend(request, params))
        #
        #     {
        #         ret_code: 0,
        #         ret_msg: 'OK',
        #         ext_code: '',
        #         ext_info: '',
        #         result: {
        #             BTC: {
        #                 equity: 0,
        #                 available_balance: 0,
        #                 used_margin: 0,
        #                 order_margin: 0,
        #                 position_margin: 0,
        #                 occ_closing_fee: 0,
        #                 occ_funding_fee: 0,
        #                 wallet_balance: 0,
        #                 realised_pnl: 0,
        #                 unrealised_pnl: 0,
        #                 cum_realised_pnl: 0,
        #                 given_cash: 0,
        #                 service_cash: 0
        #             }
        #         },
        #         time_now: '1583937810.370020',
        #         rate_limit_status: 119,
        #         rate_limit_reset_ms: 1583937810367,
        #         rate_limit: 120
        #     }
        #
        result = {
            'info': response,
        }
        balances = self.safe_value(response, 'result', {})
        currencyIds = list(balances.keys())
        for i in range(0, len(currencyIds)):
            currencyId = currencyIds[i]
            balance = balances[currencyId]
            code = self.safe_currency_code(currencyId)
            account = self.account()
            account['free'] = self.safe_float(balance, 'available_balance')
            account['used'] = self.safe_float(balance, 'used_margin')
            account['total'] = self.safe_float(balance, 'equity')
            result[code] = account
        return self.parse_balance(result)

    def parse_order_status(self, status):
        statuses = {
            # basic orders
            'Created': 'open',
            'Rejected': 'rejected',  # order is triggered but failed upon being placed
            'New': 'open',
            'PartiallyFilled': 'open',
            'Filled': 'closed',
            'Cancelled': 'canceled',
            'PendingCancel': 'canceling',  # the engine has received the cancellation but there is no guarantee that it will be successful
            # conditional orders
            'Active': 'open',  # order is triggered and placed successfully
            'Untriggered': 'open',  # order waits to be triggered
            'Triggered': 'closed',  # order is triggered
            # 'Cancelled': 'canceled',  # order is cancelled
            # 'Rejected': 'rejected',  # order is triggered but fail to be placed
            'Deactivated': 'canceled',  # conditional order was cancelled before triggering
        }
        return self.safe_string(statuses, status, status)

    def parse_time_in_force(self, timeInForce):
        timeInForces = {
            'GoodTillCancel': 'GTC',
            'ImmediateOrCancel': 'IOC',
            'FillOrKill': 'FOK',
            'PostOnly': 'PO',
        }
        return self.safe_string(timeInForces, timeInForce, timeInForce)

    def parse_order(self, order, market=None):
        #
        # createOrder
        #
        #     {
        #         "user_id": 1,
        #         "order_id": "335fd977-e5a5-4781-b6d0-c772d5bfb95b",
        #         "symbol": "BTCUSD",
        #         "side": "Buy",
        #         "order_type": "Limit",
        #         "price": 8800,
        #         "qty": 1,
        #         "time_in_force": "GoodTillCancel",
        #         "order_status": "Created",
        #         "last_exec_time": 0,
        #         "last_exec_price": 0,
        #         "leaves_qty": 1,
        #         "cum_exec_qty": 0,  # in contracts, where 1 contract = 1 quote currency unit(USD for inverse contracts)
        #         "cum_exec_value": 0,  # in contract's underlying currency(BTC for inverse contracts)
        #         "cum_exec_fee": 0,
        #         "reject_reason": "",
        #         "order_link_id": "",
        #         "created_at": "2019-11-30T11:03:43.452Z",
        #         "updated_at": "2019-11-30T11:03:43.455Z"
        #     }
        #
        # fetchOrder
        #
        #     {
        #         "user_id" : 599946,
        #         "symbol" : "BTCUSD",
        #         "side" : "Buy",
        #         "order_type" : "Limit",
        #         "price" : "7948",
        #         "qty" : 10,
        #         "time_in_force" : "GoodTillCancel",
        #         "order_status" : "Filled",
        #         "ext_fields" : {
        #             "o_req_num" : -1600687220498,
        #             "xreq_type" : "x_create"
        #         },
        #         "last_exec_time" : "1588150113.968422",
        #         "last_exec_price" : "7948",
        #         "leaves_qty" : 0,
        #         "leaves_value" : "0",
        #         "cum_exec_qty" : 10,
        #         "cum_exec_value" : "0.00125817",
        #         "cum_exec_fee" : "-0.00000031",
        #         "reject_reason" : "",
        #         "cancel_type" : "",
        #         "order_link_id" : "",
        #         "created_at" : "2020-04-29T08:45:24.399146Z",
        #         "updated_at" : "2020-04-29T08:48:33.968422Z",
        #         "order_id" : "dd2504b9-0157-406a-99e1-efa522373944"
        #     }
        #
        # conditional order
        #
        #     {
        #         "user_id":##,
        #         "symbol":"BTCUSD",
        #         "side":"Buy",
        #         "order_type":"Market",
        #         "price":0,
        #         "qty":10,
        #         "time_in_force":"GoodTillCancel",
        #         "stop_order_type":"Stop",
        #         "trigger_by":"LastPrice",
        #         "base_price":11833,
        #         "order_status":"Untriggered",
        #         "ext_fields":{
        #             "stop_order_type":"Stop",
        #             "trigger_by":"LastPrice",
        #             "base_price":11833,
        #             "expected_direction":"Rising",
        #             "trigger_price":12400,
        #             "close_on_trigger":true,
        #             "op_from":"api",
        #             "remark":"145.53.159.48",
        #             "o_req_num":0
        #         },
        #         "leaves_qty":10,
        #         "leaves_value":0.00080645,
        #         "reject_reason":null,
        #         "cross_seq":-1,
        #         "created_at":"2020-08-21T09:18:48.000Z",
        #         "updated_at":"2020-08-21T09:18:48.000Z",
        #         "stop_px":12400,
        #         "stop_order_id":"3f3b54b1-3379-42c7-8510-44f4d9915be0"
        #     }
        #
        marketId = self.safe_string(order, 'symbol')
        market = self.safe_market(marketId, market)
        symbol = None
        base = None
        timestamp = self.parse8601(self.safe_string(order, 'created_at'))
        id = self.safe_string_2(order, 'order_id', 'stop_order_id')
        type = self.safe_string_lower(order, 'order_type')
        price = self.safe_float(order, 'price')
        if price == 0.0:
            price = None
        average = self.safe_float(order, 'average_price')
        amount = self.safe_float(order, 'qty')
        cost = self.safe_float(order, 'cum_exec_value')
        filled = self.safe_float(order, 'cum_exec_qty')
        remaining = self.safe_float(order, 'leaves_qty')
        if market is not None:
            symbol = market['symbol']
            base = market['base']
        lastTradeTimestamp = self.safe_timestamp(order, 'last_exec_time')
        if lastTradeTimestamp == 0:
            lastTradeTimestamp = None
        if (filled is None) and (amount is not None) and (remaining is not None):
            filled = amount - remaining
        if filled is not None:
            if (remaining is None) and (amount is not None):
                remaining = amount - filled
            if cost is None:
                if price is not None:
                    cost = price * filled
            if (type == 'market') and (cost is not None) and (cost > 0):
                price = None
                if average is None:
                    average = filled / cost
        status = self.parse_order_status(self.safe_string_2(order, 'order_status', 'stop_order_status'))
        side = self.safe_string_lower(order, 'side')
        feeCost = self.safe_float(order, 'cum_exec_fee')
        fee = None
        if feeCost is not None:
            feeCost = abs(feeCost)
            fee = {
                'cost': feeCost,
                'currency': base,
            }
        clientOrderId = self.safe_string(order, 'order_link_id')
        if (clientOrderId is not None) and (len(clientOrderId) < 1):
            clientOrderId = None
        timeInForce = self.parse_time_in_force(self.safe_string(order, 'time_in_force'))
        stopPrice = self.safe_float(order, 'stop_px')
        postOnly = (timeInForce == 'PO')
        return {
            'info': order,
            'id': id,
            'clientOrderId': clientOrderId,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'lastTradeTimestamp': lastTradeTimestamp,
            'symbol': symbol,
            'type': type,
            'timeInForce': timeInForce,
            'postOnly': postOnly,
            'side': side,
            'price': price,
            'stopPrice': stopPrice,
            'amount': amount,
            'cost': cost,
            'average': average,
            'filled': filled,
            'remaining': remaining,
            'status': status,
            'fee': fee,
            'trades': None,
        }

    def fetch_order(self, id, symbol=None, params={}):
        if symbol is None:
            raise ArgumentsRequired(self.id + ' fetchOrder() requires a symbol argument')
        self.load_markets()
        market = self.market(symbol)
        request = {
            'symbol': market['id'],
            # 'order_link_id': 'string',  # one of order_id, stop_order_id or order_link_id is required
            # regular orders ---------------------------------------------
            # 'order_id': id,  # one of order_id or order_link_id is required for regular orders
            # conditional orders ---------------------------------------------
            # 'stop_order_id': id,  # one of stop_order_id or order_link_id is required for conditional orders
        }
        marketTypes = self.safe_value(self.options, 'marketTypes', {})
        marketType = self.safe_string(marketTypes, symbol)
        method = 'privateLinearGetOrderSearch' if (marketType == 'linear') else 'v2PrivateGetOrder'
        stopOrderId = self.safe_string(params, 'stop_order_id')
        if stopOrderId is None:
            orderLinkId = self.safe_string(params, 'order_link_id')
            if orderLinkId is None:
                request['order_id'] = id
        else:
            method = 'privateLinearGetStopOrderSearch' if (marketType == 'linear') else 'v2PrivateGetStopOrder'
        response = getattr(self, method)(self.extend(request, params))
        #
        #     {
        #         "ret_code": 0,
        #         "ret_msg": "OK",
        #         "ext_code": "",
        #         "ext_info": "",
        #         "result": {
        #             "user_id": 1,
        #             "symbol": "BTCUSD",
        #             "side": "Sell",
        #             "order_type": "Limit",
        #             "price": "8083",
        #             "qty": 10,
        #             "time_in_force": "GoodTillCancel",
        #             "order_status": "New",
        #             "ext_fields": {"o_req_num": -308787, "xreq_type": "x_create", "xreq_offset": 4154640},
        #             "leaves_qty": 10,
        #             "leaves_value": "0.00123716",
        #             "cum_exec_qty": 0,
        #             "reject_reason": "",
        #             "order_link_id": "",
        #             "created_at": "2019-10-21T07:28:19.396246Z",
        #             "updated_at": "2019-10-21T07:28:19.396246Z",
        #             "order_id": "efa44157-c355-4a98-b6d6-1d846a936b93"
        #         },
        #         "time_now": "1571651135.291930",
        #         "rate_limit_status": 99,  # The remaining number of accesses in one minute
        #         "rate_limit_reset_ms": 1580885703683,
        #         "rate_limit": 100
        #     }
        #
        # conditional orders
        #
        #     {
        #         "ret_code": 0,
        #         "ret_msg": "OK",
        #         "ext_code": "",
        #         "ext_info": "",
        #         "result": {
        #             "user_id": 1,
        #             "symbol": "BTCUSD",
        #             "side": "Buy",
        #             "order_type": "Limit",
        #             "price": "8000",
        #             "qty": 1,
        #             "time_in_force": "GoodTillCancel",
        #             "order_status": "Untriggered",
        #             "ext_fields": {},
        #             "leaves_qty": 1,
        #             "leaves_value": "0.00013333",
        #             "cum_exec_qty": 0,
        #             "cum_exec_value": null,
        #             "cum_exec_fee": null,
        #             "reject_reason": "",
        #             "order_link_id": "",
        #             "created_at": "2019-12-27T19:56:24.052194Z",
        #             "updated_at": "2019-12-27T19:56:24.052194Z",
        #             "order_id": "378a1bbc-a93a-4e75-87f4-502ea754ba36"
        #         },
        #         "time_now": "1577476584.386958",
        #         "rate_limit_status": 99,
        #         "rate_limit_reset_ms": 1580885703683,
        #         "rate_limit": 100
        #     }
        #
        result = self.safe_value(response, 'result')
        return self.parse_order(result, market)

    def create_order(self, symbol, type, side, amount, price=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        qty = self.amount_to_precision(symbol, amount)
        if market['inverse']:
            qty = int(qty)
        else:
            qty = float(qty)
        request = {
            # orders ---------------------------------------------------------
            'side': self.capitalize(side),
            'symbol': market['id'],
            'order_type': self.capitalize(type),
            'qty': qty,  # order quantity in USD, integer only
            # 'price': float(self.price_to_precision(symbol, price)),  # required for limit orders
            'time_in_force': 'GoodTillCancel',  # ImmediateOrCancel, FillOrKill, PostOnly
            # 'take_profit': 123.45,  # take profit price, only take effect upon opening the position
            # 'stop_loss': 123.45,  # stop loss price, only take effect upon opening the position
            # 'reduce_only': False,  # reduce only, required for linear orders
            # when creating a closing order, bybit recommends a True value for
            # close_on_trigger to avoid failing due to insufficient available margin
            # 'close_on_trigger': False, required for linear orders
            # 'order_link_id': 'string',  # unique client order id, max 36 characters
            # conditional orders ---------------------------------------------
            # base_price is used to compare with the value of stop_px, to decide
            # whether your conditional order will be triggered by crossing trigger
            # price from upper side or lower side, mainly used to identify the
            # expected direction of the current conditional order
            # 'base_price': 123.45,  # required for conditional orders
            # 'stop_px': 123.45,  # trigger price, required for conditional orders
            # 'trigger_by': 'LastPrice',  # IndexPrice, MarkPrice
        }
        priceIsRequired = False
        if type == 'limit':
            priceIsRequired = True
        if priceIsRequired:
            if price is not None:
                request['price'] = float(self.price_to_precision(symbol, price))
            else:
                raise ArgumentsRequired(self.id + ' createOrder() requires a price argument for a ' + type + ' order')
        clientOrderId = self.safe_string_2(params, 'order_link_id', 'clientOrderId')
        if clientOrderId is not None:
            request['order_link_id'] = clientOrderId
            params = self.omit(params, ['order_link_id', 'clientOrderId'])
        stopPx = self.safe_value_2(params, 'stop_px', 'stopPrice')
        basePrice = self.safe_value(params, 'base_price')
        marketTypes = self.safe_value(self.options, 'marketTypes', {})
        marketType = self.safe_string(marketTypes, symbol)
        method = 'privateLinearPostOrderCreate' if (marketType == 'linear') else 'v2PrivatePostOrderCreate'
        if marketType == 'linear':
            method = 'privateLinearPostOrderCreate'
            request['reduce_only'] = False
            request['close_on_trigger'] = False
        if stopPx is not None:
            if basePrice is None:
                raise ArgumentsRequired(self.id + ' createOrder() requires both the stop_px and base_price params for a conditional ' + type + ' order')
            else:
                method = 'privateLinearPostStopOrderCreate' if (marketType == 'linear') else 'v2PrivatePostStopOrderCreate'
                request['stop_px'] = float(self.price_to_precision(symbol, stopPx))
                request['base_price'] = float(self.price_to_precision(symbol, basePrice))
                params = self.omit(params, ['stop_px', 'stopPrice', 'base_price'])
        elif basePrice is not None:
            raise ArgumentsRequired(self.id + ' createOrder() requires both the stop_px and base_price params for a conditional ' + type + ' order')
        response = getattr(self, method)(self.extend(request, params))
        #
        #     {
        #         "ret_code": 0,
        #         "ret_msg": "OK",
        #         "ext_code": "",
        #         "ext_info": "",
        #         "result": {
        #             "user_id": 1,
        #             "order_id": "335fd977-e5a5-4781-b6d0-c772d5bfb95b",
        #             "symbol": "BTCUSD",
        #             "side": "Buy",
        #             "order_type": "Limit",
        #             "price": 8800,
        #             "qty": 1,
        #             "time_in_force": "GoodTillCancel",
        #             "order_status": "Created",
        #             "last_exec_time": 0,
        #             "last_exec_price": 0,
        #             "leaves_qty": 1,
        #             "cum_exec_qty": 0,
        #             "cum_exec_value": 0,
        #             "cum_exec_fee": 0,
        #             "reject_reason": "",
        #             "order_link_id": "",
        #             "created_at": "2019-11-30T11:03:43.452Z",
        #             "updated_at": "2019-11-30T11:03:43.455Z"
        #         },
        #         "time_now": "1575111823.458705",
        #         "rate_limit_status": 98,
        #         "rate_limit_reset_ms": 1580885703683,
        #         "rate_limit": 100
        #     }
        #
        # conditional orders
        #
        #     {
        #         "ret_code": 0,
        #         "ret_msg": "ok",
        #         "ext_code": "",
        #         "result": {
        #             "user_id": 1,
        #             "symbol": "BTCUSD",
        #             "side": "Buy",
        #             "order_type": "Limit",
        #             "price": 8000,
        #             "qty": 1,
        #             "time_in_force": "GoodTillCancel",
        #             "stop_order_type": "Stop",
        #             "trigger_by": "LastPrice",
        #             "base_price": 7000,
        #             "order_status": "Untriggered",
        #             "ext_fields": {
        #                 "stop_order_type": "Stop",
        #                 "trigger_by": "LastPrice",
        #                 "base_price": 7000,
        #                 "expected_direction": "Rising",
        #                 "trigger_price": 7500,
        #                 "op_from": "api",
        #                 "remark": "127.0.01",
        #                 "o_req_num": 0
        #             },
        #             "leaves_qty": 1,
        #             "leaves_value": 0.00013333,
        #             "reject_reason": null,
        #             "cross_seq": -1,
        #             "created_at": "2019-12-27T12:48:24.000Z",
        #             "updated_at": "2019-12-27T12:48:24.000Z",
        #             "stop_px": 7500,
        #             "stop_order_id": "a85cd1c0-a9a4-49d3-a1bd-bab5ebe946d5"
        #         },
        #         "ext_info": null,
        #         "time_now": "1577450904.327654",
        #         "rate_limit_status": 99,
        #         "rate_limit_reset_ms": 1577450904335,
        #         "rate_limit": "100"
        #     }
        #
        result = self.safe_value(response, 'result')
        return self.parse_order(result, market)

    def edit_order(self, id, symbol, type, side, amount=None, price=None, params={}):
        if symbol is None:
            raise ArgumentsRequired(self.id + ' editOrder() requires an symbol argument')
        marketTypes = self.safe_value(self.options, 'marketTypes', {})
        marketType = self.safe_string(marketTypes, symbol)
        self.load_markets()
        market = self.market(symbol)
        request = {
            # 'order_id': id,  # only for non-conditional orders
            'symbol': market['id'],
            # 'p_r_qty': self.amount_to_precision(symbol, amount),  # new order quantity, optional
            # 'p_r_price' self.priceToprecision(symbol, price),  # new order price, optional
            # ----------------------------------------------------------------
            # conditional orders
            # 'stop_order_id': id,  # only for conditional orders
            # 'p_r_trigger_price': 123.45,  # new trigger price also known as stop_px
        }
        method = 'privateLinearPostOrderReplace' if (marketType == 'linear') else 'v2PrivatePostOrderReplace'
        stopOrderId = self.safe_string(params, 'stop_order_id')
        if stopOrderId is not None:
            method = 'privateLinearPostStopOrderReplace' if (marketType == 'linear') else 'v2PrivatePostStopOrderReplace'
            request['stop_order_id'] = stopOrderId
            params = self.omit(params, ['stop_order_id'])
        else:
            request['order_id'] = id
        if amount is not None:
            qty = self.amount_to_precision(symbol, amount)
            if market['inverse']:
                qty = int(qty)
            else:
                qty = float(qty)
            request['p_r_qty'] = qty
        if price is not None:
            request['p_r_price'] = float(self.price_to_precision(symbol, price))
        response = getattr(self, method)(self.extend(request, params))
        #
        #     {
        #         "ret_code": 0,
        #         "ret_msg": "ok",
        #         "ext_code": "",
        #         "result": {"order_id": "efa44157-c355-4a98-b6d6-1d846a936b93"},
        #         "time_now": "1539778407.210858",
        #         "rate_limit_status": 99,  # remaining number of accesses in one minute
        #         "rate_limit_reset_ms": 1580885703683,
        #         "rate_limit": 100
        #     }
        #
        # conditional orders
        #
        #     {
        #         "ret_code": 0,
        #         "ret_msg": "ok",
        #         "ext_code": "",
        #         "result": {"stop_order_id": "378a1bbc-a93a-4e75-87f4-502ea754ba36"},
        #         "ext_info": null,
        #         "time_now": "1577475760.604942",
        #         "rate_limit_status": 96,
        #         "rate_limit_reset_ms": 1577475760612,
        #         "rate_limit": "100"
        #     }
        #
        result = self.safe_value(response, 'result', {})
        return {
            'info': response,
            'id': self.safe_string_2(result, 'order_id', 'stop_order_id'),
            'order_id': self.safe_string(result, 'order_id'),
            'stop_order_id': self.safe_string(result, 'stop_order_id'),
        }

    def cancel_order(self, id, symbol=None, params={}):
        if symbol is None:
            raise ArgumentsRequired(self.id + ' cancelOrder() requires a symbol argument')
        self.load_markets()
        market = self.market(symbol)
        request = {
            'symbol': market['id'],
            # 'order_link_id': 'string',  # one of order_id, stop_order_id or order_link_id is required
            # regular orders ---------------------------------------------
            # 'order_id': id,  # one of order_id or order_link_id is required for regular orders
            # conditional orders ---------------------------------------------
            # 'stop_order_id': id,  # one of stop_order_id or order_link_id is required for conditional orders
        }
        marketTypes = self.safe_value(self.options, 'marketTypes', {})
        marketType = self.safe_value(marketTypes, symbol)
        method = 'privateLinearPostOrderCancel' if (marketType == 'linear') else 'v2PrivatePostOrderCancel'
        stopOrderId = self.safe_string(params, 'stop_order_id')
        if stopOrderId is None:
            orderLinkId = self.safe_string(params, 'order_link_id')
            if orderLinkId is None:
                request['order_id'] = id
        else:
            method = 'privateLinearPostStopOrderCancel' if (marketType == 'linear') else 'v2PrivatePostStopOrderCancel'
        response = getattr(self, method)(self.extend(request, params))
        result = self.safe_value(response, 'result', {})
        return self.parse_order(result, market)

    def cancel_all_orders(self, symbol=None, params={}):
        if symbol is None:
            raise ArgumentsRequired(self.id + ' cancelAllOrders() requires a symbol argument')
        self.load_markets()
        market = self.market(symbol)
        request = {
            'symbol': market['id'],
        }
        options = self.safe_value(self.options, 'cancelAllOrders', {})
        marketTypes = self.safe_value(self.options, 'marketTypes', {})
        marketType = self.safe_string(marketTypes, symbol)
        defaultMethod = 'privateLinearPostOrderCancelAll' if (marketType == 'linear') else 'v2PrivatePostOrderCancelAll'
        method = self.safe_string(options, 'method', defaultMethod)
        response = getattr(self, method)(self.extend(request, params))
        result = self.safe_value(response, 'result', [])
        return self.parse_orders(result, market)

    def fetch_orders(self, symbol=None, since=None, limit=None, params={}):
        self.load_markets()
        request = {
            # 'order_id': 'string'
            # 'order_link_id': 'string',  # unique client order id, max 36 characters
            # 'symbol': market['id'],  # default BTCUSD
            # 'order': 'desc',  # asc
            # 'page': 1,
            # 'limit': 20,  # max 50
            # 'order_status': 'Created,New'
            # conditional orders ---------------------------------------------
            # 'stop_order_id': 'string',
            # 'stop_order_status': 'Untriggered',
        }
        market = None
        if symbol is not None:
            market = self.market(symbol)
            request['symbol'] = market['id']
        if limit is not None:
            request['limit'] = limit
        options = self.safe_value(self.options, 'fetchOrders', {})
        marketTypes = self.safe_value(self.options, 'marketTypes', {})
        marketType = self.safe_string(marketTypes, symbol)
        defaultMethod = 'privateLinearGetOrderList' if (marketType == 'linear') else 'v2PrivateGetOrderList'
        query = params
        if ('stop_order_id' in params) or ('stop_order_status' in params):
            stopOrderStatus = self.safe_value(params, 'stopOrderStatus')
            if stopOrderStatus is not None:
                if isinstance(stopOrderStatus, list):
                    stopOrderStatus = ','.join(stopOrderStatus)
                request['stop_order_status'] = stopOrderStatus
                query = self.omit(params, 'stop_order_status')
            defaultMethod = 'privateLinearGetStopOrderList' if (marketType == 'linear') else 'v2PrivateGetStopOrderList'
        method = self.safe_string(options, 'method', defaultMethod)
        response = getattr(self, method)(self.extend(request, query))
        #
        #     {
        #         "ret_code": 0,
        #         "ret_msg": "ok",
        #         "ext_code": "",
        #         "result": {
        #             "current_page": 1,
        #             "last_page": 6,
        #             "data": [
        #                 {
        #                     "user_id": 1,
        #                     "symbol": "BTCUSD",
        #                     "side": "Sell",
        #                     "order_type": "Market",
        #                     "price": 7074,
        #                     "qty": 2,
        #                     "time_in_force": "ImmediateOrCancel",
        #                     "order_status": "Filled",
        #                     "ext_fields": {
        #                         "close_on_trigger": True,
        #                         "orig_order_type": "BLimit",
        #                         "prior_x_req_price": 5898.5,
        #                         "op_from": "pc",
        #                         "remark": "127.0.0.1",
        #                         "o_req_num": -34799032763,
        #                         "xreq_type": "x_create"
        #                     },
        #                     "last_exec_time": "1577448481.696421",
        #                     "last_exec_price": 7070.5,
        #                     "leaves_qty": 0,
        #                     "leaves_value": 0,
        #                     "cum_exec_qty": 2,
        #                     "cum_exec_value": 0.00028283,
        #                     "cum_exec_fee": 0.00002,
        #                     "reject_reason": "NoError",
        #                     "order_link_id": "",
        #                     "created_at": "2019-12-27T12:08:01.000Z",
        #                     "updated_at": "2019-12-27T12:08:01.000Z",
        #                     "order_id": "f185806b-b801-40ff-adec-52289370ed62"
        #                 }
        #             ]
        #         },
        #         "ext_info": null,
        #         "time_now": "1577448922.437871",
        #         "rate_limit_status": 98,
        #         "rate_limit_reset_ms": 1580885703683,
        #         "rate_limit": 100
        #     }
        #
        # conditional orders
        #
        #     {
        #         "ret_code": 0,
        #         "ret_msg": "ok",
        #         "ext_code": "",
        #         "result": {
        #             "current_page": 1,
        #             "last_page": 1,
        #             "data": [
        #                 {
        #                     "user_id": 1,
        #                     "stop_order_status": "Untriggered",
        #                     "symbol": "BTCUSD",
        #                     "side": "Buy",
        #                     "order_type": "Limit",
        #                     "price": 8000,
        #                     "qty": 1,
        #                     "time_in_force": "GoodTillCancel",
        #                     "stop_order_type": "Stop",
        #                     "trigger_by": "LastPrice",
        #                     "base_price": 7000,
        #                     "order_link_id": "",
        #                     "created_at": "2019-12-27T12:48:24.000Z",
        #                     "updated_at": "2019-12-27T12:48:24.000Z",
        #                     "stop_px": 7500,
        #                     "stop_order_id": "a85cd1c0-a9a4-49d3-a1bd-bab5ebe946d5"
        #                 },
        #             ]
        #         },
        #         "ext_info": null,
        #         "time_now": "1577451658.755468",
        #         "rate_limit_status": 599,
        #         "rate_limit_reset_ms": 1577451658762,
        #         "rate_limit": 600
        #     }
        #
        result = self.safe_value(response, 'result', {})
        data = self.safe_value(result, 'data', [])
        return self.parse_orders(data, market, since, limit)

    def fetch_closed_orders(self, symbol=None, since=None, limit=None, params={}):
        defaultStatuses = [
            'Rejected',
            'Filled',
            'Cancelled',
            # conditional orders
            # 'Active',
            # 'Triggered',
            # 'Cancelled',
            # 'Rejected',
            # 'Deactivated',
        ]
        options = self.safe_value(self.options, 'fetchClosedOrders', {})
        status = self.safe_value(options, 'order_status', defaultStatuses)
        if isinstance(status, list):
            status = ','.join(status)
        request = {}
        stopOrderStatus = self.safe_value(params, 'stop_order_status')
        if stopOrderStatus is None:
            request['order_status'] = status
        else:
            request['stop_order_status'] = stopOrderStatus
        return self.fetch_orders(symbol, since, limit, self.extend(request, params))

    def fetch_open_orders(self, symbol=None, since=None, limit=None, params={}):
        defaultStatuses = [
            'Created',
            'New',
            'PartiallyFilled',
            'PendingCancel',
            # conditional orders
            # 'Untriggered',
        ]
        options = self.safe_value(self.options, 'fetchOpenOrders', {})
        status = self.safe_value(options, 'order_status', defaultStatuses)
        if isinstance(status, list):
            status = ','.join(status)
        request = {}
        stopOrderStatus = self.safe_value(params, 'stop_order_status')
        if stopOrderStatus is None:
            request['order_status'] = status
        else:
            request['stop_order_status'] = stopOrderStatus
        return self.fetch_orders(symbol, since, limit, self.extend(request, params))

    def fetch_order_trades(self, id, symbol=None, since=None, limit=None, params={}):
        request = {
            'order_id': id,
        }
        return self.fetch_my_trades(symbol, since, limit, self.extend(request, params))

    def fetch_my_trades(self, symbol=None, since=None, limit=None, params={}):
        self.load_markets()
        request = {
            # 'order_id': 'f185806b-b801-40ff-adec-52289370ed62',  # if not provided will return user's trading records
            # 'symbol': market['id'],
            # 'start_time': int(since / 1000),
            # 'page': 1,
            # 'limit' 20,  # max 50
        }
        market = None
        if symbol is None:
            orderId = self.safe_string(params, 'order_id')
            if orderId is None:
                raise ArgumentsRequired(self.id + ' fetchMyTrades() requires a symbol argument or an order_id param')
            else:
                request['order_id'] = orderId
                params = self.omit(params, 'order_id')
        else:
            market = self.market(symbol)
            request['symbol'] = market['id']
        if since is not None:
            request['start_time'] = since
        if limit is not None:
            request['limit'] = limit  # default 20, max 50
        marketTypes = self.safe_value(self.options, 'marketTypes', {})
        marketType = self.safe_string(marketTypes, symbol)
        method = 'privateLinearGetTradeExecutionList' if (marketType == 'linear') else 'v2PrivateGetExecutionList'
        response = getattr(self, method)(self.extend(request, params))
        #
        # inverse
        #
        #     {
        #         "ret_code": 0,
        #         "ret_msg": "OK",
        #         "ext_code": "",
        #         "ext_info": "",
        #         "result": {
        #             "order_id": "Abandonednot !",  # Abandonednot !
        #             "trade_list": [
        #                 {
        #                     "closed_size": 0,
        #                     "cross_seq": 277136382,
        #                     "exec_fee": "0.0000001",
        #                     "exec_id": "256e5ef8-abfe-5772-971b-f944e15e0d68",
        #                     "exec_price": "8178.5",
        #                     "exec_qty": 1,
        #                     "exec_time": "1571676941.70682",
        #                     "exec_type": "Trade",  #Exec Type Enum
        #                     "exec_value": "0.00012227",
        #                     "fee_rate": "0.00075",
        #                     "last_liquidity_ind": "RemovedLiquidity",  #Liquidity Enum
        #                     "leaves_qty": 0,
        #                     "nth_fill": 2,
        #                     "order_id": "7ad50cb1-9ad0-4f74-804b-d82a516e1029",
        #                     "order_link_id": "",
        #                     "order_price": "8178",
        #                     "order_qty": 1,
        #                     "order_type": "Market",  #Order Type Enum
        #                     "side": "Buy",  #Side Enum
        #                     "symbol": "BTCUSD",  #Symbol Enum
        #                     "user_id": 1
        #                 }
        #             ]
        #         },
        #         "time_now": "1577483699.281488",
        #         "rate_limit_status": 118,
        #         "rate_limit_reset_ms": 1577483699244737,
        #         "rate_limit": 120
        #     }
        #
        # linear
        #
        #     {
        #         "ret_code":0,
        #         "ret_msg":"OK",
        #         "ext_code":"",
        #         "ext_info":"",
        #         "result":{
        #             "current_page":1,
        #             "data":[
        #                 {
        #                     "order_id":"b59418ec-14d4-4ef9-b9f4-721d5d576974",
        #                     "order_link_id":"",
        #                     "side":"Sell",
        #                     "symbol":"BTCUSDT",
        #                     "exec_id":"0327284d-faec-5191-bd89-acc5b4fafda9",
        #                     "price":0.5,
        #                     "order_price":0.5,
        #                     "order_qty":0.01,
        #                     "order_type":"Market",
        #                     "fee_rate":0.00075,
        #                     "exec_price":9709.5,
        #                     "exec_type":"Trade",
        #                     "exec_qty":0.01,
        #                     "exec_fee":0.07282125,
        #                     "exec_value":97.095,
        #                     "leaves_qty":0,
        #                     "closed_size":0.01,
        #                     "last_liquidity_ind":"RemovedLiquidity",
        #                     "trade_time":1591648052,
        #                     "trade_time_ms":1591648052861
        #                 }
        #             ]
        #         },
        #         "time_now":"1591736501.979264",
        #         "rate_limit_status":119,
        #         "rate_limit_reset_ms":1591736501974,
        #         "rate_limit":120
        #     }
        #
        result = self.safe_value(response, 'result', {})
        trades = self.safe_value_2(result, 'trade_list', 'data', [])
        return self.parse_trades(trades, market, since, limit)

    def fetch_deposits(self, code=None, since=None, limit=None, params={}):
        self.load_markets()
        request = {
            # 'coin': currency['id'],
            # 'currency': currency['id'],  # alias
            # 'start_date': self.iso8601(since),
            # 'end_date': self.iso8601(till),
            'wallet_fund_type': 'Deposit',  # Deposit, Withdraw, RealisedPNL, Commission, Refund, Prize, ExchangeOrderWithdraw, ExchangeOrderDeposit
            # 'page': 1,
            # 'limit': 20,  # max 50
        }
        currency = None
        if code is not None:
            currency = self.currency(code)
            request['coin'] = currency['id']
        if since is not None:
            request['start_date'] = self.ymd(since)
        if limit is not None:
            request['limit'] = limit
        response = self.v2PrivateGetWalletFundRecords(self.extend(request, params))
        #
        #     {
        #         "ret_code": 0,
        #         "ret_msg": "ok",
        #         "ext_code": "",
        #         "result": {
        #             "data": [
        #                 {
        #                     "id": 234467,
        #                     "user_id": 1,
        #                     "coin": "BTC",
        #                     "wallet_id": 27913,
        #                     "type": "Realized P&L",
        #                     "amount": "-0.00000006",
        #                     "tx_id": "",
        #                     "address": "BTCUSD",
        #                     "wallet_balance": "0.03000330",
        #                     "exec_time": "2019-12-09T00:00:25.000Z",
        #                     "cross_seq": 0
        #                 }
        #             ]
        #         },
        #         "ext_info": null,
        #         "time_now": "1577481867.115552",
        #         "rate_limit_status": 119,
        #         "rate_limit_reset_ms": 1577481867122,
        #         "rate_limit": 120
        #     }
        #
        result = self.safe_value(response, 'result', {})
        data = self.safe_value(result, 'data', [])
        return self.parse_transactions(data, currency, since, limit)

    def fetch_withdrawals(self, code=None, since=None, limit=None, params={}):
        self.load_markets()
        request = {
            # 'coin': currency['id'],
            # 'start_date': self.iso8601(since),
            # 'end_date': self.iso8601(till),
            # 'status': 'Pending',  # ToBeConfirmed, UnderReview, Pending, Success, CancelByUser, Reject, Expire
            # 'page': 1,
            # 'limit': 20,  # max 50
        }
        currency = None
        if code is not None:
            currency = self.currency(code)
            request['coin'] = currency['id']
        if since is not None:
            request['start_date'] = self.ymd(since)
        if limit is not None:
            request['limit'] = limit
        response = self.v2PrivateGetWalletWithdrawList(self.extend(request, params))
        #
        #     {
        #         "ret_code": 0,
        #         "ret_msg": "ok",
        #         "ext_code": "",
        #         "result": {
        #             "data": [
        #                 {
        #                     "id": 137,
        #                     "user_id": 1,
        #                     "coin": "XRP",  # Coin Enum
        #                     "status": "Pending",  # Withdraw Status Enum
        #                     "amount": "20.00000000",
        #                     "fee": "0.25000000",
        #                     "address": "rH7H595XYEVTEHU2FySYsWnmfACBnZS9zM",
        #                     "tx_id": "",
        #                     "submited_at": "2019-06-11T02:20:24.000Z",
        #                     "updated_at": "2019-06-11T02:20:24.000Z"
        #                 },
        #             ],
        #             "current_page": 1,
        #             "last_page": 1
        #         },
        #         "ext_info": null,
        #         "time_now": "1577482295.125488",
        #         "rate_limit_status": 119,
        #         "rate_limit_reset_ms": 1577482295132,
        #         "rate_limit": 120
        #     }
        #
        result = self.safe_value(response, 'result', {})
        data = self.safe_value(result, 'data', [])
        return self.parse_transactions(data, currency, since, limit, params)

    def parse_transaction_status(self, status):
        statuses = {
            'ToBeConfirmed': 'pending',
            'UnderReview': 'pending',
            'Pending': 'pending',
            'Success': 'ok',
            'CancelByUser': 'canceled',
            'Reject': 'rejected',
            'Expire': 'expired',
        }
        return self.safe_string(statuses, status, status)

    def parse_transaction(self, transaction, currency=None):
        #
        # fetchWithdrawals
        #
        #     {
        #         "id": 137,
        #         "user_id": 1,
        #         "coin": "XRP",  # Coin Enum
        #         "status": "Pending",  # Withdraw Status Enum
        #         "amount": "20.00000000",
        #         "fee": "0.25000000",
        #         "address": "rH7H595XYEVTEHU2FySYsWnmfACBnZS9zM",
        #         "tx_id": "",
        #         "submited_at": "2019-06-11T02:20:24.000Z",
        #         "updated_at": "2019-06-11T02:20:24.000Z"
        #     }
        #
        # fetchDeposits ledger entries
        #
        #     {
        #         "id": 234467,
        #         "user_id": 1,
        #         "coin": "BTC",
        #         "wallet_id": 27913,
        #         "type": "Realized P&L",
        #         "amount": "-0.00000006",
        #         "tx_id": "",
        #         "address": "BTCUSD",
        #         "wallet_balance": "0.03000330",
        #         "exec_time": "2019-12-09T00:00:25.000Z",
        #         "cross_seq": 0
        #     }
        #
        currencyId = self.safe_string(transaction, 'coin')
        code = self.safe_currency_code(currencyId, currency)
        timestamp = self.parse8601(self.safe_string_2(transaction, 'submited_at', 'exec_time'))
        updated = self.parse8601(self.safe_string(transaction, 'updated_at'))
        status = self.parse_transaction_status(self.safe_string(transaction, 'status'))
        address = self.safe_string(transaction, 'address')
        feeCost = self.safe_float(transaction, 'fee')
        fee = None
        if feeCost is not None:
            fee = {
                'cost': feeCost,
                'currency': code,
            }
        return {
            'info': transaction,
            'id': self.safe_string(transaction, 'id'),
            'txid': self.safe_string(transaction, 'tx_id'),
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'address': address,
            'addressTo': None,
            'addressFrom': None,
            'tag': None,
            'tagTo': None,
            'tagFrom': None,
            'type': 'withdrawal',
            'amount': self.safe_float(transaction, 'amount'),
            'currency': code,
            'status': status,
            'updated': updated,
            'fee': fee,
        }

    def fetch_ledger(self, code=None, since=None, limit=None, params={}):
        self.load_markets()
        request = {
            # 'coin': currency['id'],
            # 'currency': currency['id'],  # alias
            # 'start_date': self.iso8601(since),
            # 'end_date': self.iso8601(till),
            # 'wallet_fund_type': 'Deposit',  # Withdraw, RealisedPNL, Commission, Refund, Prize, ExchangeOrderWithdraw, ExchangeOrderDeposit
            # 'page': 1,
            # 'limit': 20,  # max 50
        }
        currency = None
        if code is not None:
            currency = self.currency(code)
            request['coin'] = currency['id']
        if since is not None:
            request['start_date'] = self.ymd(since)
        if limit is not None:
            request['limit'] = limit
        response = self.v2PrivateGetWalletFundRecords(self.extend(request, params))
        #
        #     {
        #         "ret_code": 0,
        #         "ret_msg": "ok",
        #         "ext_code": "",
        #         "result": {
        #             "data": [
        #                 {
        #                     "id": 234467,
        #                     "user_id": 1,
        #                     "coin": "BTC",
        #                     "wallet_id": 27913,
        #                     "type": "Realized P&L",
        #                     "amount": "-0.00000006",
        #                     "tx_id": "",
        #                     "address": "BTCUSD",
        #                     "wallet_balance": "0.03000330",
        #                     "exec_time": "2019-12-09T00:00:25.000Z",
        #                     "cross_seq": 0
        #                 }
        #             ]
        #         },
        #         "ext_info": null,
        #         "time_now": "1577481867.115552",
        #         "rate_limit_status": 119,
        #         "rate_limit_reset_ms": 1577481867122,
        #         "rate_limit": 120
        #     }
        #
        result = self.safe_value(response, 'result', {})
        data = self.safe_value(result, 'data', [])
        return self.parse_ledger(data, currency, since, limit)

    def parse_ledger_entry(self, item, currency=None):
        #
        #     {
        #         "id": 234467,
        #         "user_id": 1,
        #         "coin": "BTC",
        #         "wallet_id": 27913,
        #         "type": "Realized P&L",
        #         "amount": "-0.00000006",
        #         "tx_id": "",
        #         "address": "BTCUSD",
        #         "wallet_balance": "0.03000330",
        #         "exec_time": "2019-12-09T00:00:25.000Z",
        #         "cross_seq": 0
        #     }
        #
        currencyId = self.safe_string(item, 'coin')
        code = self.safe_currency_code(currencyId, currency)
        amount = self.safe_float(item, 'amount')
        after = self.safe_float(item, 'wallet_balance')
        direction = 'out' if (amount < 0) else 'in'
        before = None
        if after is not None and amount is not None:
            difference = amount if (direction == 'out') else -amount
            before = self.sum(after, difference)
        timestamp = self.parse8601(self.safe_string(item, 'exec_time'))
        type = self.parse_ledger_entry_type(self.safe_string(item, 'type'))
        id = self.safe_string(item, 'id')
        referenceId = self.safe_string(item, 'tx_id')
        return {
            'id': id,
            'currency': code,
            'account': self.safe_string(item, 'wallet_id'),
            'referenceAccount': None,
            'referenceId': referenceId,
            'status': None,
            'amount': amount,
            'before': before,
            'after': after,
            'fee': None,
            'direction': direction,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'type': type,
            'info': item,
        }

    def parse_ledger_entry_type(self, type):
        types = {
            'Deposit': 'transaction',
            'Withdraw': 'transaction',
            'RealisedPNL': 'trade',
            'Commission': 'fee',
            'Refund': 'cashback',
            'Prize': 'prize',  # ?
            'ExchangeOrderWithdraw': 'transaction',
            'ExchangeOrderDeposit': 'transaction',
        }
        return self.safe_string(types, type, type)

    def sign(self, path, api='public', method='GET', params={}, headers=None, body=None):
        url = self.implode_params(self.urls['api'], {'hostname': self.hostname})
        type = self.safe_string(api, 0)
        section = self.safe_string(api, 1)
        request = '/' + type + '/' + section + '/' + path
        # public v2
        if section == 'public':
            if params:
                request += '?' + self.rawencode(params)
        elif type == 'public':
            if params:
                request += '?' + self.rawencode(params)
        else:
            self.check_required_credentials()
            timestamp = self.nonce()
            query = self.extend(params, {
                'api_key': self.apiKey,
                'recv_window': self.options['recvWindow'],
                'timestamp': timestamp,
            })
            auth = self.rawencode(self.keysort(query))
            signature = self.hmac(self.encode(auth), self.encode(self.secret))
            if method == 'POST':
                body = self.json(self.extend(query, {
                    'sign': signature,
                }))
                headers = {
                    'Content-Type': 'application/json',
                }
            else:
                request += '?' + auth + '&sign=' + signature
        url += request
        return {'url': url, 'method': method, 'body': body, 'headers': headers}

    def handle_errors(self, httpCode, reason, url, method, headers, body, response, requestHeaders, requestBody):
        if not response:
            return  # fallback to default error handler
        #
        #     {
        #         ret_code: 10001,
        #         ret_msg: 'ReadMapCB: expect {or n, but found \u0000, error ' +
        #         'found in  #0 byte of ...||..., bigger context ' +
        #         '...||...',
        #         ext_code: '',
        #         ext_info: '',
        #         result: null,
        #         time_now: '1583934106.590436'
        #     }
        #
        errorCode = self.safe_value(response, 'ret_code')
        if errorCode != 0:
            feedback = self.id + ' ' + body
            self.throw_exactly_matched_exception(self.exceptions['exact'], errorCode, feedback)
            self.throw_broadly_matched_exception(self.exceptions['broad'], body, feedback)
            raise ExchangeError(feedback)  # unknown message
