# -*- 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
import math
import json
from ccxt.base.errors import ExchangeError
from ccxt.base.errors import AuthenticationError
from ccxt.base.errors import PermissionDenied
from ccxt.base.errors import AccountSuspended
from ccxt.base.errors import ArgumentsRequired
from ccxt.base.errors import BadRequest
from ccxt.base.errors import BadSymbol
from ccxt.base.errors import InsufficientFunds
from ccxt.base.errors import InvalidAddress
from ccxt.base.errors import InvalidOrder
from ccxt.base.errors import OrderNotFound
from ccxt.base.errors import OrderImmediatelyFillable
from ccxt.base.errors import NotSupported
from ccxt.base.errors import DDoSProtection
from ccxt.base.errors import RateLimitExceeded
from ccxt.base.errors import ExchangeNotAvailable
from ccxt.base.errors import InvalidNonce
from ccxt.base.decimal_to_precision import ROUND
from ccxt.base.decimal_to_precision import TRUNCATE


class binance(Exchange):

    def describe(self):
        return self.deep_extend(super(binance, self).describe(), {
            'id': 'binance',
            'name': 'Binance',
            'countries': ['JP', 'MT'],  # Japan, Malta
            'rateLimit': 500,
            'certified': True,
            'pro': True,
            # new metainfo interface
            'has': {
                'cancelAllOrders': True,
                'cancelOrder': True,
                'CORS': False,
                'createOrder': True,
                'fetchBalance': True,
                'fetchBidsAsks': True,
                'fetchClosedOrders': 'emulated',
                'fetchDepositAddress': True,
                'fetchDeposits': True,
                'fetchFundingFees': True,
                'fetchMarkets': True,
                'fetchMyTrades': True,
                'fetchOHLCV': True,
                'fetchOpenOrders': True,
                'fetchOrder': True,
                'fetchOrders': True,
                'fetchOrderBook': True,
                'fetchStatus': True,
                'fetchTicker': True,
                'fetchTickers': True,
                'fetchTime': True,
                'fetchTrades': True,
                'fetchTradingFee': True,
                'fetchTradingFees': True,
                'fetchTransactions': False,
                'fetchWithdrawals': True,
                'withdraw': True,
            },
            'timeframes': {
                '1m': '1m',
                '3m': '3m',
                '5m': '5m',
                '15m': '15m',
                '30m': '30m',
                '1h': '1h',
                '2h': '2h',
                '4h': '4h',
                '6h': '6h',
                '8h': '8h',
                '12h': '12h',
                '1d': '1d',
                '3d': '3d',
                '1w': '1w',
                '1M': '1M',
            },
            'urls': {
                'logo': 'https://user-images.githubusercontent.com/1294454/29604020-d5483cdc-87ee-11e7-94c7-d1a8d9169293.jpg',
                'test': {
                    'dapiPublic': 'https://testnet.binancefuture.com/dapi/v1',
                    'dapiPrivate': 'https://testnet.binancefuture.com/dapi/v1',
                    'fapiPublic': 'https://testnet.binancefuture.com/fapi/v1',
                    'fapiPrivate': 'https://testnet.binancefuture.com/fapi/v1',
                    'fapiPrivateV2': 'https://testnet.binancefuture.com/fapi/v2',
                    'public': 'https://testnet.binance.vision/api/v3',
                    'private': 'https://testnet.binance.vision/api/v3',
                    'v3': 'https://testnet.binance.vision/api/v3',
                    'v1': 'https://testnet.binance.vision/api/v1',
                },
                'api': {
                    'wapi': 'https://api.binance.com/wapi/v3',
                    'sapi': 'https://api.binance.com/sapi/v1',
                    'dapiPublic': 'https://dapi.binance.com/dapi/v1',
                    'dapiPrivate': 'https://dapi.binance.com/dapi/v1',
                    'dapiData': 'https://dapi.binance.com/futures/data',
                    'fapiPublic': 'https://fapi.binance.com/fapi/v1',
                    'fapiPrivate': 'https://fapi.binance.com/fapi/v1',
                    'fapiData': 'https://fapi.binance.com/futures/data',
                    'fapiPrivateV2': 'https://fapi.binance.com/fapi/v2',
                    'public': 'https://api.binance.com/api/v3',
                    'private': 'https://api.binance.com/api/v3',
                    'v3': 'https://api.binance.com/api/v3',
                    'v1': 'https://api.binance.com/api/v1',
                },
                'www': 'https://www.binance.com',
                'referral': 'https://www.binance.com/?ref=10205187',
                'doc': [
                    'https://binance-docs.github.io/apidocs/spot/en',
                ],
                'api_management': 'https://www.binance.com/en/usercenter/settings/api-management',
                'fees': 'https://www.binance.com/en/fee/schedule',
            },
            'api': {
                # the API structure below will need 3-layer apidefs
                'sapi': {
                    'get': [
                        'accountSnapshot',
                        # these endpoints require self.apiKey
                        'margin/asset',
                        'margin/pair',
                        'margin/allAssets',
                        'margin/allPairs',
                        'margin/priceIndex',
                        # these endpoints require self.apiKey + self.secret
                        'asset/assetDividend',
                        'margin/loan',
                        'margin/repay',
                        'margin/account',
                        'margin/transfer',
                        'margin/interestHistory',
                        'margin/forceLiquidationRec',
                        'margin/order',
                        'margin/openOrders',
                        'margin/allOrders',
                        'margin/myTrades',
                        'margin/maxBorrowable',
                        'margin/maxTransferable',
                        'margin/isolated/transfer',
                        'margin/isolated/account',
                        'margin/isolated/pair',
                        'margin/isolated/allPairs',
                        'futures/transfer',
                        'futures/loan/borrow/history',
                        'futures/loan/repay/history',
                        'futures/loan/wallet',
                        'futures/loan/configs',
                        'futures/loan/calcAdjustLevel',
                        'futures/loan/calcMaxAdjustAmount',
                        'futures/loan/adjustCollateral/history',
                        'futures/loan/liquidationHistory',
                        # https://binance-docs.github.io/apidocs/spot/en/#withdraw-sapi
                        'capital/config/getall',  # get networks for withdrawing USDT ERC20 vs USDT Omni
                        'capital/deposit/address',
                        'capital/deposit/hisrec',
                        'capital/deposit/subAddress',
                        'capital/deposit/subHisrec',
                        'capital/withdraw/history',
                        'sub-account/futures/account',
                        'sub-account/futures/accountSummary',
                        'sub-account/futures/positionRisk',
                        'sub-account/futures/internalTransfer',
                        'sub-account/margin/account',
                        'sub-account/margin/accountSummary',
                        'sub-account/spotSummary',
                        'sub-account/status',
                        'sub-account/transfer/subUserHistory',
                        # lending endpoints
                        'lending/daily/product/list',
                        'lending/daily/userLeftQuota',
                        'lending/daily/userRedemptionQuota',
                        'lending/daily/token/position',
                        'lending/union/account',
                        'lending/union/purchaseRecord',
                        'lending/union/redemptionRecord',
                        'lending/union/interestHistory',
                        'lending/project/list',
                        'lending/project/position/list',
                        # mining endpoints
                        'mining/pub/algoList',
                        'mining/pub/coinList',
                        'mining/worker/detail',
                        'mining/worker/list',
                        'mining/payment/list',
                        'mining/statistics/user/status',
                        'mining/statistics/user/list',
                    ],
                    'post': [
                        'asset/dust',
                        'account/disableFastWithdrawSwitch',
                        'account/enableFastWithdrawSwitch',
                        'capital/withdraw/apply',
                        'margin/transfer',
                        'margin/loan',
                        'margin/repay',
                        'margin/order',
                        'margin/isolated/create',
                        'margin/isolated/transfer',
                        'sub-account/margin/transfer',
                        'sub-account/margin/enable',
                        'sub-account/margin/enable',
                        'sub-account/futures/enable',
                        'sub-account/futures/transfer',
                        'sub-account/futures/internalTransfer',
                        'sub-account/transfer/subToSub',
                        'sub-account/transfer/subToMaster',
                        'userDataStream',
                        'userDataStream/isolated',
                        'futures/transfer',
                        'futures/loan/borrow',
                        'futures/loan/repay',
                        'futures/loan/adjustCollateral',
                        # lending
                        'lending/customizedFixed/purchase',
                        'lending/daily/purchase',
                        'lending/daily/redeem',
                    ],
                    'put': [
                        'userDataStream',
                        'userDataStream/isolated',
                    ],
                    'delete': [
                        'margin/order',
                        'userDataStream',
                        'userDataStream/isolated',
                    ],
                },
                'wapi': {
                    'post': [
                        'withdraw',
                        'sub-account/transfer',
                    ],
                    'get': [
                        'depositHistory',
                        'withdrawHistory',
                        'depositAddress',
                        'accountStatus',
                        'systemStatus',
                        'apiTradingStatus',
                        'userAssetDribbletLog',
                        'tradeFee',
                        'assetDetail',
                        'sub-account/list',
                        'sub-account/transfer/history',
                        'sub-account/assets',
                    ],
                },
                'dapiPublic': {
                    'get': [
                        'ping',
                        'time',
                        'exchangeInfo',
                        'depth',
                        'trades',
                        'historicalTrades',
                        'aggTrades',
                        'premiumIndex',
                        'fundingRate',
                        'klines',
                        'continuousKlines',
                        'indexPriceKlines',
                        'markPriceKlines',
                        'ticker/24hr',
                        'ticker/price',
                        'ticker/bookTicker',
                        'allForceOrders',
                        'openInterest',
                    ],
                },
                'dapiData': {
                    'get': [
                        'openInterestHist',
                        'topLongShortAccountRatio',
                        'topLongShortPositionRatio',
                        'globalLongShortAccountRatio',
                        'takerBuySellVol',
                        'basis',
                    ],
                },
                'dapiPrivate': {
                    'get': [
                        'positionSide/dual',
                        'order',
                        'openOrder',
                        'openOrders',
                        'allOrders',
                        'balance',
                        'account',
                        'positionMargin/history',
                        'positionRisk',
                        'userTrades',
                        'income',
                        'leverageBracket',
                        'forceOrders',
                        'adlQuantile',
                    ],
                    'post': [
                        'positionSide/dual',
                        'order',
                        'batchOrders',
                        'countdownCancelAll',
                        'leverage',
                        'marginType',
                        'positionMargin',
                        'listenKey',
                    ],
                    'put': [
                        'listenKey',
                    ],
                    'delete': [
                        'order',
                        'allOpenOrders',
                        'batchOrders',
                        'listenKey',
                    ],
                },
                'fapiPublic': {
                    'get': [
                        'ping',
                        'time',
                        'exchangeInfo',
                        'depth',
                        'trades',
                        'historicalTrades',
                        'aggTrades',
                        'klines',
                        'fundingRate',
                        'premiumIndex',
                        'ticker/24hr',
                        'ticker/price',
                        'ticker/bookTicker',
                        'allForceOrders',
                        'openInterest',
                    ],
                },
                'fapiData': {
                    'get': [
                        'openInterestHist',
                        'topLongShortAccountRatio',
                        'topLongShortPositionRatio',
                        'globalLongShortAccountRatio',
                        'takerlongshortRatio',
                    ],
                },
                'fapiPrivate': {
                    'get': [
                        'allForceOrders',
                        'allOrders',
                        'openOrder',
                        'openOrders',
                        'order',
                        'account',
                        'balance',
                        'leverageBracket',
                        'positionMargin/history',
                        'positionRisk',
                        'positionSide/dual',
                        'userTrades',
                        'income',
                    ],
                    'post': [
                        'batchOrders',
                        'positionSide/dual',
                        'positionMargin',
                        'marginType',
                        'order',
                        'leverage',
                        'listenKey',
                        'countdownCancelAll',
                    ],
                    'put': [
                        'listenKey',
                    ],
                    'delete': [
                        'batchOrders',
                        'order',
                        'allOpenOrders',
                        'listenKey',
                    ],
                },
                'fapiPrivateV2': {
                    'get': [
                        'account',
                        'balance',
                        'positionRisk',
                    ],
                },
                'v3': {
                    'get': [
                        'ticker/price',
                        'ticker/bookTicker',
                    ],
                },
                'public': {
                    'get': [
                        'ping',
                        'time',
                        'depth',
                        'trades',
                        'aggTrades',
                        'historicalTrades',
                        'klines',
                        'ticker/24hr',
                        'ticker/price',
                        'ticker/bookTicker',
                        'exchangeInfo',
                    ],
                    'put': ['userDataStream'],
                    'post': ['userDataStream'],
                    'delete': ['userDataStream'],
                },
                'private': {
                    'get': [
                        'allOrderList',  # oco
                        'openOrderList',  # oco
                        'orderList',  # oco
                        'order',
                        'openOrders',
                        'allOrders',
                        'account',
                        'myTrades',
                    ],
                    'post': [
                        'order/oco',
                        'order',
                        'order/test',
                    ],
                    'delete': [
                        'openOrders',  # added on 2020-04-25 for canceling all open orders per symbol
                        'orderList',  # oco
                        'order',
                    ],
                },
            },
            'fees': {
                'trading': {
                    'tierBased': False,
                    'percentage': True,
                    'taker': 0.001,
                    'maker': 0.001,
                },
            },
            'commonCurrencies': {
                'BCC': 'BCC',  # kept for backward-compatibility https://github.com/ccxt/ccxt/issues/4848
                'YOYO': 'YOYOW',
            },
            # exchange-specific options
            'options': {
                # 'fetchTradesMethod': 'publicGetAggTrades',  # publicGetTrades, publicGetHistoricalTrades
                'defaultTimeInForce': 'GTC',  # 'GTC' = Good To Cancel(default), 'IOC' = Immediate Or Cancel
                'defaultType': 'spot',  # 'spot', 'future', 'margin', 'delivery'
                'hasAlreadyAuthenticatedSuccessfully': False,
                'warnOnFetchOpenOrdersWithoutSymbol': True,
                'recvWindow': 5 * 1000,  # 5 sec, binance default
                'timeDifference': 0,  # the difference between system clock and Binance clock
                'adjustForTimeDifference': False,  # controls the adjustment logic upon instantiation
                'parseOrderToPrecision': False,  # force amounts and costs in parseOrder to precision
                'newOrderRespType': {
                    'market': 'FULL',  # 'ACK' for order id, 'RESULT' for full order or 'FULL' for order with fills
                    'limit': 'RESULT',  # we change it from 'ACK' by default to 'RESULT'
                },
                'quoteOrderQty': True,  # whether market orders support amounts in quote currency
            },
            # https://binance-docs.github.io/apidocs/spot/en/#error-codes-2
            'exceptions': {
                'API key does not exist': AuthenticationError,
                'Order would trigger immediately.': OrderImmediatelyFillable,
                'Order would immediately match and take.': OrderImmediatelyFillable,  # {"code":-2010,"msg":"Order would immediately match and take."}
                'Account has insufficient balance for requested action.': InsufficientFunds,
                'Rest API trading is not enabled.': ExchangeNotAvailable,
                "You don't have permission.": PermissionDenied,  # {"msg":"You don't have permission.","success":false}
                'Market is closed.': ExchangeNotAvailable,  # {"code":-1013,"msg":"Market is closed."}
                'Too many requests.': DDoSProtection,  # {"msg":"Too many requests. Please try again later.","success":false}
                '-1000': ExchangeNotAvailable,  # {"code":-1000,"msg":"An unknown error occured while processing the request."}
                '-1001': ExchangeNotAvailable,  # 'Internal error; unable to process your request. Please try again.'
                '-1002': AuthenticationError,  # 'You are not authorized to execute self request.'
                '-1003': RateLimitExceeded,  # {"code":-1003,"msg":"Too much request weight used, current limit is 1200 request weight per 1 MINUTE. Please use the websocket for live updates to avoid polling the API."}
                '-1013': InvalidOrder,  # createOrder -> 'invalid quantity'/'invalid price'/MIN_NOTIONAL
                '-1015': RateLimitExceeded,  # 'Too many new orders; current limit is %s orders per %s.'
                '-1016': ExchangeNotAvailable,  # 'This service is no longer available.',
                '-1020': BadRequest,  # 'This operation is not supported.'
                '-1021': InvalidNonce,  # 'your time is ahead of server'
                '-1022': AuthenticationError,  # {"code":-1022,"msg":"Signature for self request is not valid."}
                '-1100': BadRequest,  # createOrder(symbol, 1, asdf) -> 'Illegal characters found in parameter 'price'
                '-1101': BadRequest,  # Too many parameters; expected %s and received %s.
                '-1102': BadRequest,  # Param %s or %s must be sent, but both were empty
                '-1103': BadRequest,  # An unknown parameter was sent.
                '-1104': BadRequest,  # Not all sent parameters were read, read 8 parameters but was sent 9
                '-1105': BadRequest,  # Parameter %s was empty.
                '-1106': BadRequest,  # Parameter %s sent when not required.
                '-1111': BadRequest,  # Precision is over the maximum defined for self asset.
                '-1112': InvalidOrder,  # No orders on book for symbol.
                '-1114': BadRequest,  # TimeInForce parameter sent when not required.
                '-1115': BadRequest,  # Invalid timeInForce.
                '-1116': BadRequest,  # Invalid orderType.
                '-1117': BadRequest,  # Invalid side.
                '-1118': BadRequest,  # New client order ID was empty.
                '-1119': BadRequest,  # Original client order ID was empty.
                '-1120': BadRequest,  # Invalid interval.
                '-1121': BadSymbol,  # Invalid symbol.
                '-1125': AuthenticationError,  # This listenKey does not exist.
                '-1127': BadRequest,  # More than %s hours between startTime and endTime.
                '-1128': BadRequest,  # {"code":-1128,"msg":"Combination of optional parameters invalid."}
                '-1130': BadRequest,  # Data sent for paramter %s is not valid.
                '-1131': BadRequest,  # recvWindow must be less than 60000
                '-2010': ExchangeError,  # generic error code for createOrder -> 'Account has insufficient balance for requested action.', {"code":-2010,"msg":"Rest API trading is not enabled."}, etc...
                '-2011': OrderNotFound,  # cancelOrder(1, 'BTC/USDT') -> 'UNKNOWN_ORDER'
                '-2013': OrderNotFound,  # fetchOrder(1, 'BTC/USDT') -> 'Order does not exist'
                '-2014': AuthenticationError,  # {"code":-2014, "msg": "API-key format invalid."}
                '-2015': AuthenticationError,  # "Invalid API-key, IP, or permissions for action."
                '-3005': InsufficientFunds,  # {"code":-3005,"msg":"Transferring out not allowed. Transfer out amount exceeds max amount."}
                '-3008': InsufficientFunds,  # {"code":-3008,"msg":"Borrow not allowed. Your borrow amount has exceed maximum borrow amount."}
                '-3010': ExchangeError,  # {"code":-3010,"msg":"Repay not allowed. Repay amount exceeds borrow amount."}
                '-3022': AccountSuspended,  # You account's trading is banned.
            },
        })

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

    def fetch_time(self, params={}):
        type = self.safe_string_2(self.options, 'fetchTime', 'defaultType', 'spot')
        method = 'publicGetTime'
        if type == 'future':
            method = 'fapiPublicGetTime'
        elif type == 'delivery':
            method = 'dapiPublicGetTime'
        response = getattr(self, method)(params)
        return self.safe_integer(response, 'serverTime')

    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_markets(self, params={}):
        defaultType = self.safe_string_2(self.options, 'fetchMarkets', 'defaultType', 'spot')
        type = self.safe_string(params, 'type', defaultType)
        query = self.omit(params, 'type')
        if (type != 'spot') and (type != 'future') and (type != 'margin') and (type != 'delivery'):
            raise ExchangeError(self.id + " does not support '" + type + "' type, set exchange.options['defaultType'] to 'spot', 'margin', 'delivery' or 'future'")  # eslint-disable-line quotes
        method = 'publicGetExchangeInfo'
        if type == 'future':
            method = 'fapiPublicGetExchangeInfo'
        elif type == 'delivery':
            method = 'dapiPublicGetExchangeInfo'
        response = getattr(self, method)(query)
        #
        # spot / margin
        #
        #     {
        #         "timezone":"UTC",
        #         "serverTime":1575416692969,
        #         "rateLimits":[
        #             {"rateLimitType":"REQUEST_WEIGHT","interval":"MINUTE","intervalNum":1,"limit":1200},
        #             {"rateLimitType":"ORDERS","interval":"SECOND","intervalNum":10,"limit":100},
        #             {"rateLimitType":"ORDERS","interval":"DAY","intervalNum":1,"limit":200000}
        #         ],
        #         "exchangeFilters":[],
        #         "symbols":[
        #             {
        #                 "symbol":"ETHBTC",
        #                 "status":"TRADING",
        #                 "baseAsset":"ETH",
        #                 "baseAssetPrecision":8,
        #                 "quoteAsset":"BTC",
        #                 "quotePrecision":8,
        #                 "baseCommissionPrecision":8,
        #                 "quoteCommissionPrecision":8,
        #                 "orderTypes":["LIMIT","LIMIT_MAKER","MARKET","STOP_LOSS_LIMIT","TAKE_PROFIT_LIMIT"],
        #                 "icebergAllowed":true,
        #                 "ocoAllowed":true,
        #                 "quoteOrderQtyMarketAllowed":true,
        #                 "isSpotTradingAllowed":true,
        #                 "isMarginTradingAllowed":true,
        #                 "filters":[
        #                     {"filterType":"PRICE_FILTER","minPrice":"0.00000100","maxPrice":"100000.00000000","tickSize":"0.00000100"},
        #                     {"filterType":"PERCENT_PRICE","multiplierUp":"5","multiplierDown":"0.2","avgPriceMins":5},
        #                     {"filterType":"LOT_SIZE","minQty":"0.00100000","maxQty":"100000.00000000","stepSize":"0.00100000"},
        #                     {"filterType":"MIN_NOTIONAL","minNotional":"0.00010000","applyToMarket":true,"avgPriceMins":5},
        #                     {"filterType":"ICEBERG_PARTS","limit":10},
        #                     {"filterType":"MARKET_LOT_SIZE","minQty":"0.00000000","maxQty":"63100.00000000","stepSize":"0.00000000"},
        #                     {"filterType":"MAX_NUM_ALGO_ORDERS","maxNumAlgoOrders":5}
        #                 ]
        #             },
        #         ],
        #     }
        #
        # futures/usdt-margined(fapi)
        #
        #     {
        #         "timezone":"UTC",
        #         "serverTime":1575417244353,
        #         "rateLimits":[
        #             {"rateLimitType":"REQUEST_WEIGHT","interval":"MINUTE","intervalNum":1,"limit":1200},
        #             {"rateLimitType":"ORDERS","interval":"MINUTE","intervalNum":1,"limit":1200}
        #         ],
        #         "exchangeFilters":[],
        #         "symbols":[
        #             {
        #                 "symbol":"BTCUSDT",
        #                 "status":"TRADING",
        #                 "maintMarginPercent":"2.5000",
        #                 "requiredMarginPercent":"5.0000",
        #                 "baseAsset":"BTC",
        #                 "quoteAsset":"USDT",
        #                 "pricePrecision":2,
        #                 "quantityPrecision":3,
        #                 "baseAssetPrecision":8,
        #                 "quotePrecision":8,
        #                 "filters":[
        #                     {"minPrice":"0.01","maxPrice":"100000","filterType":"PRICE_FILTER","tickSize":"0.01"},
        #                     {"stepSize":"0.001","filterType":"LOT_SIZE","maxQty":"1000","minQty":"0.001"},
        #                     {"stepSize":"0.001","filterType":"MARKET_LOT_SIZE","maxQty":"1000","minQty":"0.001"},
        #                     {"limit":200,"filterType":"MAX_NUM_ORDERS"},
        #                     {"multiplierDown":"0.8500","multiplierUp":"1.1500","multiplierDecimal":"4","filterType":"PERCENT_PRICE"}
        #                 ],
        #                 "orderTypes":["LIMIT","MARKET","STOP"],
        #                 "timeInForce":["GTC","IOC","FOK","GTX"]
        #             }
        #         ]
        #     }
        #
        # delivery/coin-margined(dapi)
        #
        #     {
        #         "timezone": "UTC",
        #         "serverTime": 1597667052958,
        #         "rateLimits": [
        #             {"rateLimitType":"REQUEST_WEIGHT","interval":"MINUTE","intervalNum":1,"limit":6000},
        #             {"rateLimitType":"ORDERS","interval":"MINUTE","intervalNum":1,"limit":6000}
        #         ],
        #         "exchangeFilters": [],
        #         "symbols": [
        #             {
        #                 "symbol": "BTCUSD_200925",
        #                 "pair": "BTCUSD",
        #                 "contractType": "CURRENT_QUARTER",
        #                 "deliveryDate": 1601020800000,
        #                 "onboardDate": 1590739200000,
        #                 "contractStatus": "TRADING",
        #                 "contractSize": 100,
        #                 "marginAsset": "BTC",
        #                 "maintMarginPercent": "2.5000",
        #                 "requiredMarginPercent": "5.0000",
        #                 "baseAsset": "BTC",
        #                 "quoteAsset": "USD",
        #                 "pricePrecision": 1,
        #                 "quantityPrecision": 0,
        #                 "baseAssetPrecision": 8,
        #                 "quotePrecision": 8,
        #                 "equalQtyPrecision": 4,
        #                 "filters": [
        #                     {"minPrice":"0.1","maxPrice":"100000","filterType":"PRICE_FILTER","tickSize":"0.1"},
        #                     {"stepSize":"1","filterType":"LOT_SIZE","maxQty":"100000","minQty":"1"},
        #                     {"stepSize":"0","filterType":"MARKET_LOT_SIZE","maxQty":"100000","minQty":"1"},
        #                     {"limit":200,"filterType":"MAX_NUM_ORDERS"},
        #                     {"multiplierDown":"0.9500","multiplierUp":"1.0500","multiplierDecimal":"4","filterType":"PERCENT_PRICE"}
        #                 ],
        #                 "orderTypes": ["LIMIT","MARKET","STOP","STOP_MARKET","TAKE_PROFIT","TAKE_PROFIT_MARKET","TRAILING_STOP_MARKET"],
        #                 "timeInForce": ["GTC","IOC","FOK","GTX"]
        #             },
        #             {
        #                 "symbol": "BTCUSD_PERP",
        #                 "pair": "BTCUSD",
        #                 "contractType": "PERPETUAL",
        #                 "deliveryDate": 4133404800000,
        #                 "onboardDate": 1596006000000,
        #                 "contractStatus": "TRADING",
        #                 "contractSize": 100,
        #                 "marginAsset": "BTC",
        #                 "maintMarginPercent": "2.5000",
        #                 "requiredMarginPercent": "5.0000",
        #                 "baseAsset": "BTC",
        #                 "quoteAsset": "USD",
        #                 "pricePrecision": 1,
        #                 "quantityPrecision": 0,
        #                 "baseAssetPrecision": 8,
        #                 "quotePrecision": 8,
        #                 "equalQtyPrecision": 4,
        #                 "filters": [
        #                     {"minPrice":"0.1","maxPrice":"100000","filterType":"PRICE_FILTER","tickSize":"0.1"},
        #                     {"stepSize":"1","filterType":"LOT_SIZE","maxQty":"100000","minQty":"1"},
        #                     {"stepSize":"1","filterType":"MARKET_LOT_SIZE","maxQty":"100000","minQty":"1"},
        #                     {"limit":200,"filterType":"MAX_NUM_ORDERS"},
        #                     {"multiplierDown":"0.8500","multiplierUp":"1.1500","multiplierDecimal":"4","filterType":"PERCENT_PRICE"}
        #                 ],
        #                 "orderTypes": ["LIMIT","MARKET","STOP","STOP_MARKET","TAKE_PROFIT","TAKE_PROFIT_MARKET","TRAILING_STOP_MARKET"],
        #                 "timeInForce": ["GTC","IOC","FOK","GTX"]
        #             }
        #         ]
        #     }
        #
        if self.options['adjustForTimeDifference']:
            self.load_time_difference()
        markets = self.safe_value(response, 'symbols')
        result = []
        for i in range(0, len(markets)):
            market = markets[i]
            marketType = 'spot'
            future = False
            delivery = False
            if 'maintMarginPercent' in market:
                delivery = ('marginAsset' in market)
                future = not delivery
                marketType = 'delivery' if delivery else 'future'
            spot = not (future or delivery)
            id = self.safe_string(market, 'symbol')
            lowercaseId = self.safe_string_lower(market, 'symbol')
            baseId = self.safe_string(market, 'baseAsset')
            quoteId = self.safe_string(market, 'quoteAsset')
            base = self.safe_currency_code(baseId)
            quote = self.safe_currency_code(quoteId)
            symbol = id if delivery else (base + '/' + quote)
            filters = self.safe_value(market, 'filters', [])
            filtersByType = self.index_by(filters, 'filterType')
            precision = {
                'base': self.safe_integer(market, 'baseAssetPrecision'),
                'quote': self.safe_integer(market, 'quotePrecision'),
                'amount': self.safe_integer(market, 'baseAssetPrecision'),
                'price': self.safe_integer(market, 'quotePrecision'),
            }
            status = self.safe_string_2(market, 'status', 'contractStatus')
            active = (status == 'TRADING')
            margin = self.safe_value(market, 'isMarginTradingAllowed', future or delivery)
            entry = {
                'id': id,
                'lowercaseId': lowercaseId,
                'symbol': symbol,
                'base': base,
                'quote': quote,
                'baseId': baseId,
                'quoteId': quoteId,
                'info': market,
                'type': marketType,
                'spot': spot,
                'margin': margin,
                'future': future,
                'delivery': delivery,
                'active': active,
                'precision': precision,
                'limits': {
                    'amount': {
                        'min': math.pow(10, -precision['amount']),
                        'max': None,
                    },
                    'price': {
                        'min': None,
                        'max': None,
                    },
                    'cost': {
                        'min': None,
                        'max': None,
                    },
                },
            }
            if 'PRICE_FILTER' in filtersByType:
                filter = self.safe_value(filtersByType, 'PRICE_FILTER', {})
                # PRICE_FILTER reports zero values for maxPrice
                # since they updated filter types in November 2018
                # https://github.com/ccxt/ccxt/issues/4286
                # therefore limits['price']['max'] doesn't have any meaningful value except None
                entry['limits']['price'] = {
                    'min': self.safe_float(filter, 'minPrice'),
                    'max': None,
                }
                maxPrice = self.safe_float(filter, 'maxPrice')
                if (maxPrice is not None) and (maxPrice > 0):
                    entry['limits']['price']['max'] = maxPrice
                entry['precision']['price'] = self.precision_from_string(filter['tickSize'])
            if 'LOT_SIZE' in filtersByType:
                filter = self.safe_value(filtersByType, 'LOT_SIZE', {})
                stepSize = self.safe_string(filter, 'stepSize')
                entry['precision']['amount'] = self.precision_from_string(stepSize)
                entry['limits']['amount'] = {
                    'min': self.safe_float(filter, 'minQty'),
                    'max': self.safe_float(filter, 'maxQty'),
                }
            if 'MARKET_LOT_SIZE' in filtersByType:
                filter = self.safe_value(filtersByType, 'MARKET_LOT_SIZE', {})
                entry['limits']['market'] = {
                    'min': self.safe_float(filter, 'minQty'),
                    'max': self.safe_float(filter, 'maxQty'),
                }
            if 'MIN_NOTIONAL' in filtersByType:
                filter = self.safe_value(filtersByType, 'MIN_NOTIONAL', {})
                entry['limits']['cost']['min'] = self.safe_float(filter, 'minNotional')
            result.append(entry)
        return result

    def calculate_fee(self, symbol, type, side, amount, price, takerOrMaker='taker', params={}):
        market = self.markets[symbol]
        key = 'quote'
        rate = market[takerOrMaker]
        cost = amount * rate
        precision = market['precision']['price']
        if side == 'sell':
            cost *= price
        else:
            key = 'base'
            precision = market['precision']['amount']
        cost = self.decimal_to_precision(cost, ROUND, precision, self.precisionMode)
        return {
            'type': takerOrMaker,
            'currency': market[key],
            'rate': rate,
            'cost': float(cost),
        }

    def fetch_balance(self, params={}):
        self.load_markets()
        defaultType = self.safe_string_2(self.options, 'fetchBalance', 'defaultType', 'spot')
        type = self.safe_string(params, 'type', defaultType)
        method = 'privateGetAccount'
        if type == 'future':
            options = self.safe_value(self.options, 'future', {})
            fetchBalanceOptions = self.safe_value(options, 'fetchBalance', {})
            method = self.safe_string(fetchBalanceOptions, 'method', 'fapiPrivateV2GetAccount')
        elif type == 'delivery':
            options = self.safe_value(self.options, 'delivery', {})
            fetchBalanceOptions = self.safe_value(options, 'fetchBalance', {})
            method = self.safe_string(fetchBalanceOptions, 'method', 'dapiPrivateGetAccount')
        elif type == 'margin':
            method = 'sapiGetMarginAccount'
        query = self.omit(params, 'type')
        response = getattr(self, method)(query)
        #
        # spot
        #
        #     {
        #         makerCommission: 10,
        #         takerCommission: 10,
        #         buyerCommission: 0,
        #         sellerCommission: 0,
        #         canTrade: True,
        #         canWithdraw: True,
        #         canDeposit: True,
        #         updateTime: 1575357359602,
        #         accountType: "MARGIN",
        #         balances: [
        #             {asset: "BTC", free: "0.00219821", locked: "0.00000000"  },
        #         ]
        #     }
        #
        # margin
        #
        #     {
        #         "borrowEnabled":true,
        #         "marginLevel":"999.00000000",
        #         "totalAssetOfBtc":"0.00000000",
        #         "totalLiabilityOfBtc":"0.00000000",
        #         "totalNetAssetOfBtc":"0.00000000",
        #         "tradeEnabled":true,
        #         "transferEnabled":true,
        #         "userAssets":[
        #             {"asset":"MATIC","borrowed":"0.00000000","free":"0.00000000","interest":"0.00000000","locked":"0.00000000","netAsset":"0.00000000"},
        #             {"asset":"VET","borrowed":"0.00000000","free":"0.00000000","interest":"0.00000000","locked":"0.00000000","netAsset":"0.00000000"},
        #             {"asset":"USDT","borrowed":"0.00000000","free":"0.00000000","interest":"0.00000000","locked":"0.00000000","netAsset":"0.00000000"}
        #         ],
        #     }
        #
        # futures(fapi)
        #
        #     fapiPrivateGetAccount
        #
        #     {
        #         "feeTier":0,
        #         "canTrade":true,
        #         "canDeposit":true,
        #         "canWithdraw":true,
        #         "updateTime":0,
        #         "totalInitialMargin":"0.00000000",
        #         "totalMaintMargin":"0.00000000",
        #         "totalWalletBalance":"4.54000000",
        #         "totalUnrealizedProfit":"0.00000000",
        #         "totalMarginBalance":"4.54000000",
        #         "totalPositionInitialMargin":"0.00000000",
        #         "totalOpenOrderInitialMargin":"0.00000000",
        #         "maxWithdrawAmount":"4.54000000",
        #         "assets":[
        #             {
        #                 "asset":"USDT",
        #                 "walletBalance":"4.54000000",
        #                 "unrealizedProfit":"0.00000000",
        #                 "marginBalance":"4.54000000",
        #                 "maintMargin":"0.00000000",
        #                 "initialMargin":"0.00000000",
        #                 "positionInitialMargin":"0.00000000",
        #                 "openOrderInitialMargin":"0.00000000",
        #                 "maxWithdrawAmount":"4.54000000"
        #             }
        #         ],
        #         "positions":[
        #             {
        #                 "symbol":"BTCUSDT",
        #                 "initialMargin":"0.00000",
        #                 "maintMargin":"0.00000",
        #                 "unrealizedProfit":"0.00000000",
        #                 "positionInitialMargin":"0.00000",
        #                 "openOrderInitialMargin":"0.00000"
        #             }
        #         ]
        #     }
        #
        #     fapiPrivateV2GetAccount
        #
        #     {
        #         "feeTier":0,
        #         "canTrade":true,
        #         "canDeposit":true,
        #         "canWithdraw":true,
        #         "updateTime":0,
        #         "totalInitialMargin":"0.00000000",
        #         "totalMaintMargin":"0.00000000",
        #         "totalWalletBalance":"0.00000000",
        #         "totalUnrealizedProfit":"0.00000000",
        #         "totalMarginBalance":"0.00000000",
        #         "totalPositionInitialMargin":"0.00000000",
        #         "totalOpenOrderInitialMargin":"0.00000000",
        #         "totalCrossWalletBalance":"0.00000000",
        #         "totalCrossUnPnl":"0.00000000",
        #         "availableBalance":"0.00000000",
        #         "maxWithdrawAmount":"0.00000000",
        #         "assets":[
        #             {
        #                 "asset":"BNB",
        #                 "walletBalance":"0.01000000",
        #                 "unrealizedProfit":"0.00000000",
        #                 "marginBalance":"0.01000000",
        #                 "maintMargin":"0.00000000",
        #                 "initialMargin":"0.00000000",
        #                 "positionInitialMargin":"0.00000000",
        #                 "openOrderInitialMargin":"0.00000000",
        #                 "maxWithdrawAmount":"0.01000000",
        #                 "crossWalletBalance":"0.01000000",
        #                 "crossUnPnl":"0.00000000",
        #                 "availableBalance":"0.01000000"
        #             }
        #         ],
        #         "positions":[
        #             {
        #                 "symbol":"BTCUSDT",
        #                 "initialMargin":"0",
        #                 "maintMargin":"0",
        #                 "unrealizedProfit":"0.00000000",
        #                 "positionInitialMargin":"0",
        #                 "openOrderInitialMargin":"0",
        #                 "leverage":"20",
        #                 "isolated":false,
        #                 "entryPrice":"0.00000",
        #                 "maxNotional":"5000000",
        #                 "positionSide":"BOTH"
        #             },
        #         ]
        #     }
        #
        #     fapiPrivateV2GetBalance
        #
        #     [
        #         {
        #             "accountAlias":"FzFzXquXXqoC",
        #             "asset":"BNB",
        #             "balance":"0.01000000",
        #             "crossWalletBalance":"0.01000000",
        #             "crossUnPnl":"0.00000000",
        #             "availableBalance":"0.01000000",
        #             "maxWithdrawAmount":"0.01000000"
        #         }
        #     ]
        #
        result = {'info': response}
        if (type == 'spot') or (type == 'margin'):
            balances = self.safe_value_2(response, 'balances', 'userAssets', [])
            for i in range(0, len(balances)):
                balance = balances[i]
                currencyId = self.safe_string(balance, 'asset')
                code = self.safe_currency_code(currencyId)
                account = self.account()
                account['free'] = self.safe_float(balance, 'free')
                account['used'] = self.safe_float(balance, 'locked')
                result[code] = account
        else:
            balances = response
            if not isinstance(response, list):
                balances = self.safe_value(response, 'assets', [])
            for i in range(0, len(balances)):
                balance = balances[i]
                currencyId = self.safe_string(balance, 'asset')
                code = self.safe_currency_code(currencyId)
                account = self.account()
                account['free'] = self.safe_float(balance, 'availableBalance')
                account['used'] = self.safe_float(balance, 'initialMargin')
                account['total'] = self.safe_float_2(balance, 'marginBalance', 'balance')
                result[code] = account
        return self.parse_balance(result)

    def fetch_order_book(self, symbol, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {
            'symbol': market['id'],
        }
        if limit is not None:
            request['limit'] = limit  # default 100, max 5000, see https://github.com/binance-exchange/binance-official-api-docs/blob/master/rest-api.md#order-book
        method = 'publicGetDepth'
        if market['future']:
            method = 'fapiPublicGetDepth'
        elif market['delivery']:
            method = 'dapiPublicGetDepth'
        response = getattr(self, method)(self.extend(request, params))
        orderbook = self.parse_order_book(response)
        orderbook['nonce'] = self.safe_integer(response, 'lastUpdateId')
        return orderbook

    def parse_ticker(self, ticker, market=None):
        #
        #     {
        #         symbol: 'ETHBTC',
        #         priceChange: '0.00068700',
        #         priceChangePercent: '2.075',
        #         weightedAvgPrice: '0.03342681',
        #         prevClosePrice: '0.03310300',
        #         lastPrice: '0.03378900',
        #         lastQty: '0.07700000',
        #         bidPrice: '0.03378900',
        #         bidQty: '7.16800000',
        #         askPrice: '0.03379000',
        #         askQty: '24.00000000',
        #         openPrice: '0.03310200',
        #         highPrice: '0.03388900',
        #         lowPrice: '0.03306900',
        #         volume: '205478.41000000',
        #         quoteVolume: '6868.48826294',
        #         openTime: 1601469986932,
        #         closeTime: 1601556386932,
        #         firstId: 196098772,
        #         lastId: 196186315,
        #         count: 87544
        #     }
        #
        timestamp = self.safe_integer(ticker, 'closeTime')
        marketId = self.safe_string(ticker, 'symbol')
        symbol = self.safe_symbol(marketId, market)
        last = self.safe_float(ticker, 'lastPrice')
        return {
            'symbol': symbol,
            'timestamp': timestamp,…