text: # -*- 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 hashlib
  import math
  from ccxt.base.errors import ExchangeError
  from ccxt.base.errors import AuthenticationError
  from ccxt.base.errors import PermissionDenied
  from ccxt.base.errors import ArgumentsRequired
  from ccxt.base.errors import BadRequest
  from ccxt.base.errors import BadSymbol
  from ccxt.base.errors import InsufficientFunds
  from ccxt.base.errors import InvalidOrder
  from ccxt.base.errors import OrderNotFound
  from ccxt.base.errors import ExchangeNotAvailable
  from ccxt.base.errors import OnMaintenance
  from ccxt.base.errors import RequestTimeout
  
  
  class huobipro(Exchange):
  
      def describe(self):
          return self.deep_extend(super(huobipro, self).describe(), {
              'id': 'huobipro',
              'name': 'Huobi Pro',
              'countries': ['CN'],
              'rateLimit': 2000,
              'userAgent': self.userAgents['chrome39'],
              'version': 'v1',
              'accounts': None,
              'accountsById': None,
              'hostname': 'api.huobi.pro',  # api.testnet.huobi.pro
              'pro': True,
              'has': {
                  'cancelOrder': True,
                  'CORS': False,
                  'createOrder': True,
                  'fetchBalance': True,
                  'fetchClosedOrders': True,
                  'fetchCurrencies': True,
                  'fetchDepositAddress': True,
                  'fetchDeposits': True,
                  'fetchMarkets': True,
                  'fetchMyTrades': True,
                  'fetchOHLCV': True,
                  'fetchOpenOrders': True,
                  'fetchOrder': True,
                  'fetchOrderBook': True,
                  'fetchOrders': True,
                  'fetchTicker': True,
                  'fetchTickers': True,
                  'fetchTrades': True,
                  'fetchTradingLimits': True,
                  'fetchWithdrawals': True,
                  'withdraw': True,
              },
              'timeframes': {
                  '1m': '1min',
                  '5m': '5min',
                  '15m': '15min',
                  '30m': '30min',
                  '1h': '60min',
                  '4h': '4hour',
                  '1d': '1day',
                  '1w': '1week',
                  '1M': '1mon',
                  '1y': '1year',
              },
              'urls': {
                  'test': {
                      'market': 'https://api.testnet.huobi.pro',
                      'public': 'https://api.testnet.huobi.pro',
                      'private': 'https://api.testnet.huobi.pro',
                  },
                  'logo': 'https://user-images.githubusercontent.com/1294454/76137448-22748a80-604e-11ea-8069-6e389271911d.jpg',
                  'api': {
                      'market': 'https://{hostname}',
                      'public': 'https://{hostname}',
                      'private': 'https://{hostname}',
                      'v2Public': 'https://{hostname}',
                      'v2Private': 'https://{hostname}',
                  },
                  'www': 'https://www.huobi.pro',
                  'referral': 'https://www.huobi.co/en-us/topic/invited/?invite_code=rwrd3',
                  'doc': 'https://huobiapi.github.io/docs/spot/v1/cn/',
                  'fees': 'https://www.huobi.pro/about/fee/',
              },
              'api': {
                  'v2Public': {
                      'get': [
                          'reference/currencies',
                      ],
                  },
                  'v2Private': {
                      'get': [
                          'account/ledger',
                          'account/withdraw/quota',
                          'account/deposit/address',
                          'reference/transact-fee-rate',
                      ],
                      'post': [
                          'sub-user/management',
                      ],
                  },
                  'market': {
                      'get': [
                          'history/kline',  # 获取K线数据
                          'detail/merged',  # 获取聚合行情(Ticker)
                          'depth',  # 获取 Market Depth 数据
                          'trade',  # 获取 Trade Detail 数据
                          'history/trade',  # 批量获取最近的交易记录
                          'detail',  # 获取 Market Detail 24小时成交量数据
                          'tickers',
                      ],
                  },
                  'public': {
                      'get': [
                          'common/symbols',  # 查询系统支持的所有交易对
                          'common/currencys',  # 查询系统支持的所有币种
                          'common/timestamp',  # 查询系统当前时间
                          'common/exchange',  # order limits
                          'settings/currencys',  # ?language=en-US
                      ],
                  },
                  'private': {
                      'get': [
                          'account/accounts',  # 查询当前用户的所有账户(即account-id)
                          'account/accounts/{id}/balance',  # 查询指定账户的余额
                          'account/accounts/{sub-uid}',
                          'account/history',
                          'cross-margin/loan-info',
                          'fee/fee-rate/get',
                          'order/openOrders',
                          'order/orders',
                          'order/orders/{id}',  # 查询某个订单详情
                          'order/orders/{id}/matchresults',  # 查询某个订单的成交明细
                          'order/orders/getClientOrder',
                          'order/history',  # 查询当前委托、历史委托
                          'order/matchresults',  # 查询当前成交、历史成交
                          'dw/withdraw-virtual/addresses',  # 查询虚拟币提现地址
                          'query/deposit-withdraw',
                          'margin/loan-orders',  # 借贷订单
                          'margin/accounts/balance',  # 借贷账户详情
                          'points/actions',
                          'points/orders',
                          'subuser/aggregate-balance',
                          'stable-coin/exchange_rate',
                          'stable-coin/quote',
                      ],
                      'post': [
                          'futures/transfer',
                          'order/batch-orders',
                          'order/orders/place',  # 创建并执行一个新订单(一步下单， 推荐使用)
                          'order/orders/submitCancelClientOrder',
                          'order/orders/batchCancelOpenOrders',
                          'order/orders',  # 创建一个新的订单请求 （仅创建订单，不执行下单）
                          'order/orders/{id}/place',  # 执行一个订单 （仅执行已创建的订单）
                          'order/orders/{id}/submitcancel',  # 申请撤销一个订单请求
                          'order/orders/batchcancel',  # 批量撤销订单
                          'dw/balance/transfer',  # 资产划转
                          'dw/withdraw/api/create',  # 申请提现虚拟币
                          'dw/withdraw-virtual/create',  # 申请提现虚拟币
                          'dw/withdraw-virtual/{id}/place',  # 确认申请虚拟币提现
                          'dw/withdraw-virtual/{id}/cancel',  # 申请取消提现虚拟币
                          'dw/transfer-in/margin',  # 现货账户划入至借贷账户
                          'dw/transfer-out/margin',  # 借贷账户划出至现货账户
                          'margin/orders',  # 申请借贷
                          'margin/orders/{id}/repay',  # 归还借贷
                          'stable-coin/exchange',
                          'subuser/transfer',
                      ],
                  },
              },
              'fees': {
                  'trading': {
                      'tierBased': False,
                      'percentage': True,
                      'maker': 0.002,
                      'taker': 0.002,
                  },
              },
              'exceptions': {
                  'exact': {
                      # err-code
                      'bad-request': BadRequest,
                      'api-not-support-temp-addr': PermissionDenied,  # {"status":"error","err-code":"api-not-support-temp-addr","err-msg":"API withdrawal does not support temporary addresses","data":null}
                      'timeout': RequestTimeout,  # {"ts":1571653730865,"status":"error","err-code":"timeout","err-msg":"Request Timeout"}
                      'gateway-internal-error': ExchangeNotAvailable,  # {"status":"error","err-code":"gateway-internal-error","err-msg":"Failed to load data. Try again later.","data":null}
                      'account-frozen-balance-insufficient-error': InsufficientFunds,  # {"status":"error","err-code":"account-frozen-balance-insufficient-error","err-msg":"trade account balance is not enough, left: `0.0027`","data":null}
                      'invalid-amount': InvalidOrder,  # eg "Paramemter `amount` is invalid."
                      'order-limitorder-amount-min-error': InvalidOrder,  # limit order amount error, min: `0.001`
                      'order-limitorder-amount-max-error': InvalidOrder,  # market order amount error, max: `1000000`
                      'order-marketorder-amount-min-error': InvalidOrder,  # market order amount error, min: `0.01`
                      'order-limitorder-price-min-error': InvalidOrder,  # limit order price error
                      'order-limitorder-price-max-error': InvalidOrder,  # limit order price error
                      'order-orderstate-error': OrderNotFound,  # canceling an already canceled order
                      'order-queryorder-invalid': OrderNotFound,  # querying a non-existent order
                      'order-update-error': ExchangeNotAvailable,  # undocumented error
                      'api-signature-check-failed': AuthenticationError,
                      'api-signature-not-valid': AuthenticationError,  # {"status":"error","err-code":"api-signature-not-valid","err-msg":"Signature not valid: Incorrect Access key [Access key错误]","data":null}
                      'base-record-invalid': OrderNotFound,  # https://github.com/ccxt/ccxt/issues/5750
                      # err-msg
                      'invalid symbol': BadSymbol,  # {"ts":1568813334794,"status":"error","err-code":"invalid-parameter","err-msg":"invalid symbol"}
                      'invalid-parameter': BadRequest,  # {"ts":1576210479343,"status":"error","err-code":"invalid-parameter","err-msg":"symbol trade not open now"}
                      'base-symbol-trade-disabled': BadSymbol,  # {"status":"error","err-code":"base-symbol-trade-disabled","err-msg":"Trading is disabled for self symbol","data":null}
                      'system-maintenance': OnMaintenance,  # {"status": "error", "err-code": "system-maintenance", "err-msg": "System is in maintenance!", "data": null}
                  },
              },
              'options': {
                  # https://github.com/ccxt/ccxt/issues/5376
                  'fetchOrdersByStatesMethod': 'private_get_order_orders',  # 'private_get_order_history'  # https://github.com/ccxt/ccxt/pull/5392
                  'fetchOpenOrdersMethod': 'fetch_open_orders_v1',  # 'fetch_open_orders_v2'  # https://github.com/ccxt/ccxt/issues/5388
                  'createMarketBuyOrderRequiresPrice': True,
                  'fetchMarketsMethod': 'publicGetCommonSymbols',
                  'fetchBalanceMethod': 'privateGetAccountAccountsIdBalance',
                  'createOrderMethod': 'privatePostOrderOrdersPlace',
                  'language': 'en-US',
              },
              'commonCurrencies': {
                  # https://github.com/ccxt/ccxt/issues/6081
                  # https://github.com/ccxt/ccxt/issues/3365
                  # https://github.com/ccxt/ccxt/issues/2873
                  'GET': 'Themis',  # conflict with GET(Guaranteed Entrance Token, GET Protocol)
                  'HOT': 'Hydro Protocol',  # conflict with HOT(Holo) https://github.com/ccxt/ccxt/issues/4929
                  # https://github.com/ccxt/ccxt/issues/7399
                  # https://coinmarketcap.com/currencies/pnetwork/
                  # https://coinmarketcap.com/currencies/penta/markets/
                  # https://en.cryptonomist.ch/blog/eidoo/the-edo-to-pnt-upgrade-what-you-need-to-know-updated/
                  'PNT': 'Penta',
              },
          })
  
      def fetch_trading_limits(self, symbols=None, params={}):
          # self method should not be called directly, use loadTradingLimits() instead
          #  by default it will try load withdrawal fees of all currencies(with separate requests)
          #  however if you define symbols = ['ETH/BTC', 'LTC/BTC'] in args it will only load those
          self.load_markets()
          if symbols is None:
              symbols = self.symbols
          result = {}
          for i in range(0, len(symbols)):
              symbol = symbols[i]
              result[symbol] = self.fetch_trading_limits_by_id(self.market_id(symbol), params)
          return result
  
      def fetch_trading_limits_by_id(self, id, params={}):
          request = {
              'symbol': id,
          }
          response = self.publicGetCommonExchange(self.extend(request, params))
          #
          #     {status:   "ok",
          #         data: {                                 symbol: "aidocbtc",
          #                              'buy-limit-must-less-than':  1.1,
          #                          'sell-limit-must-greater-than':  0.9,
          #                         'limit-order-must-greater-than':  1,
          #                            'limit-order-must-less-than':  5000000,
          #                    'market-buy-order-must-greater-than':  0.0001,
          #                       'market-buy-order-must-less-than':  100,
          #                   'market-sell-order-must-greater-than':  1,
          #                      'market-sell-order-must-less-than':  500000,
          #                       'circuit-break-when-greater-than':  10000,
          #                          'circuit-break-when-less-than':  10,
          #                 'market-sell-order-rate-must-less-than':  0.1,
          #                  'market-buy-order-rate-must-less-than':  0.1        }}
          #
          return self.parse_trading_limits(self.safe_value(response, 'data', {}))
  
      def parse_trading_limits(self, limits, symbol=None, params={}):
          #
          #   {                                 symbol: "aidocbtc",
          #                  'buy-limit-must-less-than':  1.1,
          #              'sell-limit-must-greater-than':  0.9,
          #             'limit-order-must-greater-than':  1,
          #                'limit-order-must-less-than':  5000000,
          #        'market-buy-order-must-greater-than':  0.0001,
          #           'market-buy-order-must-less-than':  100,
          #       'market-sell-order-must-greater-than':  1,
          #          'market-sell-order-must-less-than':  500000,
          #           'circuit-break-when-greater-than':  10000,
          #              'circuit-break-when-less-than':  10,
          #     'market-sell-order-rate-must-less-than':  0.1,
          #      'market-buy-order-rate-must-less-than':  0.1        }
          #
          return {
              'info': limits,
              'limits': {
                  'amount': {
                      'min': self.safe_float(limits, 'limit-order-must-greater-than'),
                      'max': self.safe_float(limits, 'limit-order-must-less-than'),
                  },
              },
          }
  
      def fetch_markets(self, params={}):
          method = self.options['fetchMarketsMethod']
          response = getattr(self, method)(params)
          markets = self.safe_value(response, 'data')
          numMarkets = len(markets)
          if numMarkets < 1:
              raise ExchangeError(self.id + ' publicGetCommonSymbols returned empty response: ' + self.json(markets))
          result = []
          for i in range(0, len(markets)):
              market = markets[i]
              baseId = self.safe_string(market, 'base-currency')
              quoteId = self.safe_string(market, 'quote-currency')
              id = baseId + quoteId
              base = self.safe_currency_code(baseId)
              quote = self.safe_currency_code(quoteId)
              symbol = base + '/' + quote
              precision = {
                  'amount': market['amount-precision'],
                  'price': market['price-precision'],
              }
              maker = 0 if (base == 'OMG') else 0.2 / 100
              taker = 0 if (base == 'OMG') else 0.2 / 100
              minAmount = self.safe_float(market, 'min-order-amt', math.pow(10, -precision['amount']))
              maxAmount = self.safe_float(market, 'max-order-amt')
              minCost = self.safe_float(market, 'min-order-value', 0)
              state = self.safe_string(market, 'state')
              active = (state == 'online')
              result.append({
                  'id': id,
                  'symbol': symbol,
                  'base': base,
                  'quote': quote,
                  'baseId': baseId,
                  'quoteId': quoteId,
                  'active': active,
                  'precision': precision,
                  'taker': taker,
                  'maker': maker,
                  'limits': {
                      'amount': {
                          'min': minAmount,
                          'max': maxAmount,
                      },
                      'price': {
                          'min': math.pow(10, -precision['price']),
                          'max': None,
                      },
                      'cost': {
                          'min': minCost,
                          'max': None,
                      },
                  },
                  'info': market,
              })
          return result
  
      def parse_ticker(self, ticker, market=None):
          #
          # fetchTicker
          #
          #     {
          #         "amount": 26228.672978342216,
          #         "open": 9078.95,
          #         "close": 9146.86,
          #         "high": 9155.41,
          #         "id": 209988544334,
          #         "count": 265846,
          #         "low": 8988.0,
          #         "version": 209988544334,
          #         "ask": [9146.87, 0.156134],
          #         "vol": 2.3822168242201668E8,
          #         "bid": [9146.86, 0.080758],
          #     }
          #
          # fetchTickers
          #     {
          #         symbol: "bhdht",
          #         open:  2.3938,
          #         high:  2.4151,
          #         low:  2.3323,
          #         close:  2.3909,
          #         amount:  628.992,
          #         vol:  1493.71841095,
          #         count:  2088,
          #         bid:  2.3643,
          #         bidSize:  0.7136,
          #         ask:  2.4061,
          #         askSize:  0.4156
          #     }
          #
          symbol = None
          if market is not None:
              symbol = market['symbol']
          timestamp = self.safe_integer(ticker, 'ts')
          bid = None
          bidVolume = None
          ask = None
          askVolume = None
          if 'bid' in ticker:
              if isinstance(ticker['bid'], list):
                  bid = self.safe_float(ticker['bid'], 0)
                  bidVolume = self.safe_float(ticker['bid'], 1)
              else:
                  bid = self.safe_float(ticker, 'bid')
                  bidVolume = self.safe_value(ticker, 'bidSize')
          if 'ask' in ticker:
              if isinstance(ticker['ask'], list):
                  ask = self.safe_float(ticker['ask'], 0)
                  askVolume = self.safe_float(ticker['ask'], 1)
              else:
                  ask = self.safe_float(ticker, 'ask')
                  askVolume = self.safe_value(ticker, 'askSize')
          open = self.safe_float(ticker, 'open')
          close = self.safe_float(ticker, 'close')
          change = None
          percentage = None
          average = None
          if (open is not None) and (close is not None):
              change = close - open
              average = self.sum(open, close) / 2
              if (close is not None) and (close > 0):
                  percentage = (change / open) * 100
          baseVolume = self.safe_float(ticker, 'amount')
          quoteVolume = self.safe_float(ticker, 'vol')
          vwap = None
          if baseVolume is not None and quoteVolume is not None and baseVolume > 0:
              vwap = quoteVolume / baseVolume
          return {
              'symbol': symbol,
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'high': self.safe_float(ticker, 'high'),
              'low': self.safe_float(ticker, 'low'),
              'bid': bid,
              'bidVolume': bidVolume,
              'ask': ask,
              'askVolume': askVolume,
              'vwap': vwap,
              'open': open,
              'close': close,
              'last': close,
              'previousClose': None,
              'change': change,
              'percentage': percentage,
              'average': average,
              'baseVolume': baseVolume,
              'quoteVolume': quoteVolume,
              'info': ticker,
          }
  
      def fetch_order_book(self, symbol, limit=None, params={}):
          self.load_markets()
          market = self.market(symbol)
          request = {
              'symbol': market['id'],
              'type': 'step0',
          }
          response = self.marketGetDepth(self.extend(request, params))
          #
          #     {
          #         "status": "ok",
          #         "ch": "market.btcusdt.depth.step0",
          #         "ts": 1583474832790,
          #         "tick": {
          #             "bids": [
          #                 [9100.290000000000000000, 0.200000000000000000],
          #                 [9099.820000000000000000, 0.200000000000000000],
          #                 [9099.610000000000000000, 0.205000000000000000],
          #             ],
          #             "asks": [
          #                 [9100.640000000000000000, 0.005904000000000000],
          #                 [9101.010000000000000000, 0.287311000000000000],
          #                 [9101.030000000000000000, 0.012121000000000000],
          #             ],
          #             "ts":1583474832008,
          #             "version":104999698780
          #         }
          #     }
          #
          if 'tick' in response:
              if not response['tick']:
                  raise ExchangeError(self.id + ' fetchOrderBook() returned empty response: ' + self.json(response))
              tick = self.safe_value(response, 'tick')
              timestamp = self.safe_integer(tick, 'ts', self.safe_integer(response, 'ts'))
              result = self.parse_order_book(tick, timestamp)
              result['nonce'] = self.safe_integer(tick, 'version')
              return result
          raise ExchangeError(self.id + ' fetchOrderBook() returned unrecognized response: ' + self.json(response))
  
      def fetch_ticker(self, symbol, params={}):
          self.load_markets()
          market = self.market(symbol)
          request = {
              'symbol': market['id'],
          }
          response = self.marketGetDetailMerged(self.extend(request, params))
          #
          #     {
          #         "status": "ok",
          #         "ch": "market.btcusdt.detail.merged",
          #         "ts": 1583494336669,
          #         "tick": {
          #             "amount": 26228.672978342216,
          #             "open": 9078.95,
          #             "close": 9146.86,
          #             "high": 9155.41,
          #             "id": 209988544334,
          #             "count": 265846,
          #             "low": 8988.0,
          #             "version": 209988544334,
          #             "ask": [9146.87, 0.156134],
          #             "vol": 2.3822168242201668E8,
          #             "bid": [9146.86, 0.080758],
          #         }
          #     }
          #
          ticker = self.parse_ticker(response['tick'], market)
          timestamp = self.safe_value(response, 'ts')
          ticker['timestamp'] = timestamp
          ticker['datetime'] = self.iso8601(timestamp)
          return ticker
  
      def fetch_tickers(self, symbols=None, params={}):
          self.load_markets()
          response = self.marketGetTickers(params)
          tickers = self.safe_value(response, 'data')
          timestamp = self.safe_integer(response, 'ts')
          result = {}
          for i in range(0, len(tickers)):
              marketId = self.safe_string(tickers[i], 'symbol')
              market = self.safe_value(self.markets_by_id, marketId)
              symbol = marketId
              if market is not None:
                  symbol = market['symbol']
                  ticker = self.parse_ticker(tickers[i], market)
                  ticker['timestamp'] = timestamp
                  ticker['datetime'] = self.iso8601(timestamp)
                  result[symbol] = ticker
          return self.filter_by_array(result, 'symbol', symbols)
  
      def parse_trade(self, trade, market=None):
          #
          # fetchTrades(public)
          #
          #     {
          #         "amount": 0.010411000000000000,
          #         "trade-id": 102090736910,
          #         "ts": 1583497692182,
          #         "id": 10500517034273194594947,
          #         "price": 9096.050000000000000000,
          #         "direction": "sell"
          #     }
          #
          # fetchMyTrades(private)
          #
          symbol = None
          if market is None:
              marketId = self.safe_string(trade, 'symbol')
              if marketId in self.markets_by_id:
                  market = self.markets_by_id[marketId]
          if market is not None:
              symbol = market['symbol']
          timestamp = self.safe_integer_2(trade, 'ts', 'created-at')
          order = self.safe_string(trade, 'order-id')
          side = self.safe_string(trade, 'direction')
          type = self.safe_string(trade, 'type')
          if type is not None:
              typeParts = type.split('-')
              side = typeParts[0]
              type = typeParts[1]
          takerOrMaker = self.safe_string(trade, 'role')
          price = self.safe_float(trade, 'price')
          amount = self.safe_float_2(trade, 'filled-amount', 'amount')
          cost = None
          if price is not None:
              if amount is not None:
                  cost = amount * price
          fee = None
          feeCost = self.safe_float(trade, 'filled-fees')
          feeCurrency = None
          if market is not None:
              feeCurrency = market['base'] if (side == 'buy') else market['quote']
          filledPoints = self.safe_float(trade, 'filled-points')
          if filledPoints is not None:
              if (feeCost is None) or (feeCost == 0.0):
                  feeCost = filledPoints
                  feeCurrency = self.safe_currency_code(self.safe_string(trade, 'fee-deduct-currency'))
          if feeCost is not None:
              fee = {
                  'cost': feeCost,
                  'currency': feeCurrency,
              }
          tradeId = self.safe_string_2(trade, 'trade-id', 'tradeId')
          id = self.safe_string(trade, 'id', tradeId)
          return {
              'id': id,
              'info': trade,
              'order': order,
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'symbol': symbol,
              'type': type,
              'side': side,
              'takerOrMaker': takerOrMaker,
              'price': price,
              'amount': amount,
              'cost': cost,
              'fee': fee,
          }
  
      def fetch_my_trades(self, symbol=None, since=None, limit=None, params={}):
          self.load_markets()
          market = None
          request = {}
          if symbol is not None:
              market = self.market(symbol)
              request['symbol'] = market['id']
          if limit is not None:
              request['size'] = limit  # 1-100 orders, default is 100
          if since is not None:
              request['start-date'] = self.ymd(since)  # maximum query window size is 2 days, query window shift should be within past 120 days
          response = self.privateGetOrderMatchresults(self.extend(request, params))
          trades = self.parse_trades(response['data'], market, since, limit)
          return trades
  
      def fetch_trades(self, symbol, since=None, limit=1000, params={}):
          self.load_markets()
          market = self.market(symbol)
          request = {
              'symbol': market['id'],
          }
          if limit is not None:
              request['size'] = limit
          response = self.marketGetHistoryTrade(self.extend(request, params))
          #
          #     {
          #         "status": "ok",
          #         "ch": "market.btcusdt.trade.detail",
          #         "ts": 1583497692365,
          #         "data": [
          #             {
          #                 "id": 105005170342,
          #                 "ts": 1583497692182,
          #                 "data": [
          #                     {
          #                         "amount": 0.010411000000000000,
          #                         "trade-id": 102090736910,
          #                         "ts": 1583497692182,
          #                         "id": 10500517034273194594947,
          #                         "price": 9096.050000000000000000,
          #                         "direction": "sell"
          #                     }
          #                 ]
          #             },
          #             # ...
          #         ]
          #     }
          #
          data = self.safe_value(response, 'data')
          result = []
          for i in range(0, len(data)):
              trades = self.safe_value(data[i], 'data', [])
              for j in range(0, len(trades)):
                  trade = self.parse_trade(trades[j], market)
                  result.append(trade)
          result = self.sort_by(result, 'timestamp')
          return self.filter_by_symbol_since_limit(result, symbol, since, limit)
  
      def parse_ohlcv(self, ohlcv, market=None):
          #
          #     {
          #         "amount":1.2082,
          #         "open":0.025096,
          #         "close":0.025095,
          #         "high":0.025096,
          #         "id":1591515300,
          #         "count":6,
          #         "low":0.025095,
          #         "vol":0.0303205097
          #     }
          #
          return [
              self.safe_timestamp(ohlcv, 'id'),
              self.safe_float(ohlcv, 'open'),
              self.safe_float(ohlcv, 'high'),
              self.safe_float(ohlcv, 'low'),
              self.safe_float(ohlcv, 'close'),
              self.safe_float(ohlcv, 'amount'),
          ]
  
      def fetch_ohlcv(self, symbol, timeframe='1m', since=None, limit=1000, params={}):
          self.load_markets()
          market = self.market(symbol)
          request = {
              'symbol': market['id'],
              'period': self.timeframes[timeframe],
          }
          if limit is not None:
              request['size'] = limit
          response = self.marketGetHistoryKline(self.extend(request, params))
          #
          #     {
          #         "status":"ok",
          #         "ch":"market.ethbtc.kline.1min",
          #         "ts":1591515374371,
          #         "data":[
          #             {"amount":0.0,"open":0.025095,"close":0.025095,"high":0.025095,"id":1591515360,"count":0,"low":0.025095,"vol":0.0},
          #             {"amount":1.2082,"open":0.025096,"close":0.025095,"high":0.025096,"id":1591515300,"count":6,"low":0.025095,"vol":0.0303205097},
          #             {"amount":0.0648,"open":0.025096,"close":0.025096,"high":0.025096,"id":1591515240,"count":2,"low":0.025096,"vol":0.0016262208},
          #         ]
          #     }
          #
          data = self.safe_value(response, 'data', [])
          return self.parse_ohlcvs(data, market, timeframe, since, limit)
  
      def fetch_accounts(self, params={}):
          self.load_markets()
          response = self.privateGetAccountAccounts(params)
          return response['data']
  
      def fetch_currencies(self, params={}):
          request = {
              'language': self.options['language'],
          }
          response = self.publicGetSettingsCurrencys(self.extend(request, params))
          currencies = self.safe_value(response, 'data')
          result = {}
          for i in range(0, len(currencies)):
              currency = currencies[i]
              #
              #  {                    name: "ctxc",
              #              'display-name': "CTXC",
              #        'withdraw-precision':  8,
              #             'currency-type': "eth",
              #        'currency-partition': "pro",
              #             'support-sites':  null,
              #                'otc-enable':  0,
              #        'deposit-min-amount': "2",
              #       'withdraw-min-amount': "4",
              #            'show-precision': "8",
              #                      weight: "2988",
              #                     visible:  True,
              #              'deposit-desc': "Please don’t deposit any other digital assets except CTXC t…",
              #             'withdraw-desc': "Minimum withdrawal amount: 4 CTXC. not >_<not For security reason…",
              #           'deposit-enabled':  True,
              #          'withdraw-enabled':  True,
              #    'currency-addr-with-tag':  False,
              #             'fast-confirms':  15,
              #             'safe-confirms':  30                                                             }
              #
              id = self.safe_value(currency, 'name')
              precision = self.safe_integer(currency, 'withdraw-precision')
              code = self.safe_currency_code(id)
              active = currency['visible'] and currency['deposit-enabled'] and currency['withdraw-enabled']
              name = self.safe_string(currency, 'display-name')
              result[code] = {
                  'id': id,
                  'code': code,
                  'type': 'crypto',
                  # 'payin': currency['deposit-enabled'],
                  # 'payout': currency['withdraw-enabled'],
                  # 'transfer': None,
                  'name': name,
                  'active': active,
                  'fee': None,  # todo need to fetch from fee endpoint
                  'precision': precision,
                  'limits': {
                      'amount': {
                          'min': math.pow(10, -precision),
                          'max': math.pow(10, precision),
                      },
                      'price': {
                          'min': math.pow(10, -precision),
                          'max': math.pow(10, precision),
                      },
                      'cost': {
                          'min': None,
                          'max': None,
                      },
                      'deposit': {
                          'min': self.safe_float(currency, 'deposit-min-amount'),
                          'max': math.pow(10, precision),
                      },
                      'withdraw': {
                          'min': self.safe_float(currency, 'withdraw-min-amount'),
                          'max': math.pow(10, precision),
                      },
                  },
                  'info': currency,
              }
          return result
  
      def fetch_balance(self, params={}):
          self.load_markets()
          self.load_accounts()
          method = self.options['fetchBalanceMethod']
          request = {
              'id': self.accounts[0]['id'],
          }
          response = getattr(self, method)(self.extend(request, params))
          balances = self.safe_value(response['data'], 'list', [])
          result = {'info': response}
          for i in range(0, len(balances)):
              balance = balances[i]
              currencyId = self.safe_string(balance, 'currency')
              code = self.safe_currency_code(currencyId)
              account = None
              if code in result:
                  account = result[code]
              else:
                  account = self.account()
              if balance['type'] == 'trade':
                  account['free'] = self.safe_float(balance, 'balance')
              if balance['type'] == 'frozen':
                  account['used'] = self.safe_float(balance, 'balance')
              result[code] = account
          return self.parse_balance(result)
  
      def fetch_orders_by_states(self, states, symbol=None, since=None, limit=None, params={}):
          self.load_markets()
          request = {
              'states': states,
          }
          market = None
          if symbol is not None:
              market = self.market(symbol)
              request['symbol'] = market['id']
          method = self.safe_string(self.options, 'fetchOrdersByStatesMethod', 'private_get_order_orders')
          response = getattr(self, method)(self.extend(request, params))
          #
          #     {status:   "ok",
          #         data: [{                 id:  13997833014,
          #                                symbol: "ethbtc",
          #                          'account-id':  3398321,
          #                                amount: "0.045000000000000000",
          #                                 price: "0.034014000000000000",
          #                          'created-at':  1545836976871,
          #                                  type: "sell-limit",
          #                        'field-amount': "0.045000000000000000",
          #                   'field-cash-amount': "0.001530630000000000",
          #                          'field-fees': "0.000003061260000000",
          #                         'finished-at':  1545837948214,
          #                                source: "spot-api",
          #                                 state: "filled",
          #                         'canceled-at':  0                      }  ]}
          #
          return self.parse_orders(response['data'], market, since, limit)
  
      def fetch_order(self, id, symbol=None, params={}):
          self.load_markets()
          request = {
              'id': id,
          }
          response = self.privateGetOrderOrdersId(self.extend(request, params))
          order = self.safe_value(response, 'data')
          return self.parse_order(order)
  
      def fetch_orders(self, symbol=None, since=None, limit=None, params={}):
          return self.fetch_orders_by_states('pre-submitted,submitted,partial-filled,filled,partial-canceled,canceled', symbol, since, limit, params)
  
      def fetch_open_orders(self, symbol=None, since=None, limit=None, params={}):
          method = self.safe_string(self.options, 'fetchOpenOrdersMethod', 'fetch_open_orders_v1')
          return getattr(self, method)(symbol, since, limit, params)
  
      def fetch_open_orders_v1(self, symbol=None, since=None, limit=None, params={}):
          if symbol is None:
              raise ArgumentsRequired(self.id + ' fetchOpenOrdersV1 requires a symbol argument')
          return self.fetch_orders_by_states('pre-submitted,submitted,partial-filled', symbol, since, limit, params)
  
      def fetch_closed_orders(self, symbol=None, since=None, limit=None, params={}):
          return self.fetch_orders_by_states('filled,partial-canceled,canceled', symbol, since, limit, params)
  
      def fetch_open_orders_v2(self, symbol=None, since=None, limit=None, params={}):
          self.load_markets()
          if symbol is None:
              raise ArgumentsRequired(self.id + ' fetchOpenOrders requires a symbol argument')
          market = self.market(symbol)
          accountId = self.safe_string(params, 'account-id')
          if accountId is None:
              # pick the first account
              self.load_accounts()
              for i in range(0, len(self.accounts)):
                  account = self.accounts[i]
                  if account['type'] == 'spot':
                      accountId = self.safe_string(account, 'id')
                      if accountId is not None:
                          break
          request = {
              'symbol': market['id'],
              'account-id': accountId,
          }
          if limit is not None:
              request['size'] = limit
          omitted = self.omit(params, 'account-id')
          response = self.privateGetOrderOpenOrders(self.extend(request, omitted))
          #
          #     {
          #         "status":"ok",
          #         "data":[
          #             {
          #                 "symbol":"ethusdt",
          #                 "source":"api",
          #                 "amount":"0.010000000000000000",
          #                 "account-id":1528640,
          #                 "created-at":1561597491963,
          #                 "price":"400.000000000000000000",
          #                 "filled-amount":"0.0",
          #                 "filled-cash-amount":"0.0",
          #                 "filled-fees":"0.0",
          #                 "id":38477101630,
          #                 "state":"submitted",
          #                 "type":"sell-limit"
          #             }
          #         ]
          #     }
          #
          data = self.safe_value(response, 'data', [])
          return self.parse_orders(data, market, since, limit)
  
      def parse_order_status(self, status):
          statuses = {
              'partial-filled': 'open',
              'partial-canceled': 'canceled',
              'filled': 'closed',
              'canceled': 'canceled',
              'submitted': 'open',
          }
          return self.safe_string(statuses, status, status)
  
      def parse_order(self, order, market=None):
          #
          #     {                 id:  13997833014,
          #                    symbol: "ethbtc",
          #              'account-id':  3398321,
          #                    amount: "0.045000000000000000",
          #                     price: "0.034014000000000000",
          #              'created-at':  1545836976871,
          #                      type: "sell-limit",
          #            'field-amount': "0.045000000000000000",  # they have fixed it for filled-amount
          #       'field-cash-amount': "0.001530630000000000",  # they have fixed it for filled-cash-amount
          #              'field-fees': "0.000003061260000000",  # they have fixed it for filled-fees
          #             'finished-at':  1545837948214,
          #                    source: "spot-api",
          #                     state: "filled",
          #             'canceled-at':  0                      }
          #
          #     {                 id:  20395337822,
          #                    symbol: "ethbtc",
          #              'account-id':  5685075,
          #                    amount: "0.001000000000000000",
          #                     price: "0.0",
          #              'created-at':  1545831584023,
          #                      type: "buy-market",
          #            'field-amount': "0.029100000000000000",  # they have fixed it for filled-amount
          #       'field-cash-amount': "0.000999788700000000",  # they have fixed it for filled-cash-amount
          #              'field-fees': "0.000058200000000000",  # they have fixed it for filled-fees
          #             'finished-at':  1545831584181,
          #                    source: "spot-api",
          #                     state: "filled",
          #             'canceled-at':  0                      }
          #
          id = self.safe_string(order, 'id')
          side = None
          type = None
          status = None
          if 'type' in order:
              orderType = order['type'].split('-')
              side = orderType[0]
              type = orderType[1]
              status = self.parse_order_status(self.safe_string(order, 'state'))
          symbol = None
          if market is None:
              if 'symbol' in order:
                  if order['symbol'] in self.markets_by_id:
                      marketId = order['symbol']
                      market = self.markets_by_id[marketId]
          if market is not None:
              symbol = market['symbol']
          timestamp = self.safe_integer(order, 'created-at')
          amount = self.safe_float(order, 'amount')
          filled = self.safe_float_2(order, 'filled-amount', 'field-amount')  # typo in their API, filled amount
          if (type == 'market') and (side == 'buy'):
              amount = filled if (status == 'closed') else None
          price = self.safe_float(order, 'price')
          if price == 0.0:
              price = None
          cost = self.safe_float_2(order, 'filled-cash-amount', 'field-cash-amount')  # same typo
          remaining = None
          average = None
          if filled is not None:
              if amount is not None:
                  remaining = amount - filled
              # if cost is defined and filled is not zero
              if (cost is not None) and (filled > 0):
                  average = cost / filled
          feeCost = self.safe_float_2(order, 'filled-fees', 'field-fees')  # typo in their API, filled fees
          fee = None
          if feeCost is not None:
              feeCurrency = None
              if market is not None:
                  feeCurrency = market['quote'] if (side == 'sell') else market['base']
              fee = {
                  'cost': feeCost,
                  'currency': feeCurrency,
              }
          return {
              'info': order,
              'id': id,
              'clientOrderId': None,
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'lastTradeTimestamp': None,
              'symbol': symbol,
              'type': type,
              'side': side,
              'price': price,
              'average': average,
              'cost': cost,
              'amount': amount,
              'filled': filled,
              'remaining': remaining,
              'status': status,
              'fee': fee,
              'trades': None,
          }
  
      def create_order(self, symbol, type, side, amount, price=None, params={}):
          self.load_markets()
          self.load_accounts()
          market = self.market(symbol)
          request = {
              'account-id': self.accounts[0]['id'],
              'symbol': market['id'],
              'type': side + '-' + type,
          }
          if (type == 'market') and (side == 'buy'):
              if self.options['createMarketBuyOrderRequiresPrice']:
                  if price is None:
                      raise InvalidOrder(self.id + " market buy order requires price argument to calculate cost(total amount of quote currency to spend for buying, amount * price). To switch off self warning exception and specify cost in the amount argument, set .options['createMarketBuyOrderRequiresPrice'] = False. Make sure you know what you're doing.")
                  else:
                      # despite that cost = amount * price is in quote currency and should have quote precision
                      # the exchange API requires the cost supplied in 'amount' to be of base precision
                      # more about it here: https://github.com/ccxt/ccxt/pull/4395
                      # we use priceToPrecision instead of amountToPrecision here
                      # because in self case the amount is in the quote currency
                      request['amount'] = self.cost_to_precision(symbol, float(amount) * float(price))
              else:
                  request['amount'] = self.cost_to_precision(symbol, amount)
          else:
              request['amount'] = self.amount_to_precision(symbol, amount)
          if type == 'limit' or type == 'ioc' or type == 'limit-maker':
              request['price'] = self.price_to_precision(symbol, price)
          method = self.options['createOrderMethod']
          response = getattr(self, method)(self.extend(request, params))
          timestamp = self.milliseconds()
          id = self.safe_string(response, 'data')
          return {
              'info': response,
              'id': id,
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'lastTradeTimestamp': None,
              'status': None,
              'symbol': symbol,
              'type': type,
              'side': side,
              'price': price,
              'amount': amount,
              'filled': None,
              'remaining': None,
              'cost': None,
              'trades': None,
              'fee': None,
              'clientOrderId': None,
              'average': None,
          }
  
      def cancel_order(self, id, symbol=None, params={}):
          response = self.privatePostOrderOrdersIdSubmitcancel({'id': id})
          #
          #     response = {
          #         'status': 'ok',
          #         'data': '10138899000',
          #     }
          #
          return self.extend(self.parse_order(response), {
              'id': id,
              'status': 'canceled',
          })
  
      def currency_to_precision(self, currency, fee):
          return self.decimal_to_precision(fee, 0, self.currencies[currency]['precision'])
  
      def calculate_fee(self, symbol, type, side, amount, price, takerOrMaker='taker', params={}):
          market = self.markets[symbol]
          rate = market[takerOrMaker]
          cost = amount * rate
          key = 'quote'
          if side == 'sell':
              cost *= price
          else:
              key = 'base'
          return {
              'type': takerOrMaker,
              'currency': market[key],
              'rate': rate,
              'cost': float(self.currency_to_precision(market[key], cost)),
          }
  
      def parse_deposit_address(self, depositAddress, currency=None):
          #
          #     {
          #         currency: "eth",
          #         address: "0xf7292eb9ba7bc50358e27f0e025a4d225a64127b",
          #         addressTag: "",
          #         chain: "eth"
          #     }
          #
          address = self.safe_string(depositAddress, 'address')
          tag = self.safe_string(depositAddress, 'addressTag')
          currencyId = self.safe_string(depositAddress, 'currency')
          code = self.safe_currency_code(currencyId)
          self.check_address(address)
          return {
              'currency': code,
              'address': address,
              'tag': tag,
              'info': depositAddress,
          }
  
      def fetch_deposit_address(self, code, params={}):
          self.load_markets()
          currency = self.currency(code)
          request = {
              'currency': currency['id'],
          }
          response = self.v2PrivateGetAccountDepositAddress(self.extend(request, params))
          #
          #     {
          #         code: 200,
          #         data: [
          #             {
          #                 currency: "eth",
          #                 address: "0xf7292eb9ba7bc50358e27f0e025a4d225a64127b",
          #                 addressTag: "",
          #                 chain: "eth"
          #             }
          #         ]
          #     }
          #
          data = self.safe_value(response, 'data', [])
          return self.parse_deposit_address(self.safe_value(data, 0, {}), currency)
  
      def fetch_deposits(self, code=None, since=None, limit=None, params={}):
          if limit is None or limit > 100:
              limit = 100
          self.load_markets()
          currency = None
          if code is not None:
              currency = self.currency(code)
          request = {
              'type': 'deposit',
              'from': 0,  # From 'id' ... if you want to get results after a particular transaction id, pass the id in params.from
          }
          if currency is not None:
              request['currency'] = currency['id']
          if limit is not None:
              request['size'] = limit  # max 100
          response = self.privateGetQueryDepositWithdraw(self.extend(request, params))
          # return response
          return self.parse_transactions(response['data'], currency, since, limit)
  
      def fetch_withdrawals(self, code=None, since=None, limit=None, params={}):
          if limit is None or limit > 100:
              limit = 100
          self.load_markets()
          currency = None
          if code is not None:
              currency = self.currency(code)
          request = {
              'type': 'withdraw',
              'from': 0,  # From 'id' ... if you want to get results after a particular transaction id, pass the id in params.from
          }
          if currency is not None:
              request['currency'] = currency['id']
          if limit is not None:
              request['size'] = limit  # max 100
          response = self.privateGetQueryDepositWithdraw(self.extend(request, params))
          # return response
          return self.parse_transactions(response['data'], currency, since, limit)
  
      def parse_transaction(self, transaction, currency=None):
          #
          # fetchDeposits
          #
          #     {
          #         'id': 8211029,
          #         'type': 'deposit',
          #         'currency': 'eth',
          #         'chain': 'eth',
          #         'tx-hash': 'bd315....',
          #         'amount': 0.81162421,
          #         'address': '4b8b....',
          #         'address-tag': '',
          #         'fee': 0,
          #         'state': 'safe',
          #         'created-at': 1542180380965,
          #         'updated-at': 1542180788077
          #     }
          #
          # fetchWithdrawals
          #
          #     {
          #         'id': 6908275,
          #         'type': 'withdraw',
          #         'currency': 'btc',
          #         'chain': 'btc',
          #         'tx-hash': 'c1a1a....',
          #         'amount': 0.80257005,
          #         'address': '1QR....',
          #         'address-tag': '',
          #         'fee': 0.0005,
          #         'state': 'confirmed',
          #         'created-at': 1552107295685,
          #         'updated-at': 1552108032859
          #     }
          #
          timestamp = self.safe_integer(transaction, 'created-at')
          updated = self.safe_integer(transaction, 'updated-at')
          code = self.safe_currency_code(self.safe_string(transaction, 'currency'))
          type = self.safe_string(transaction, 'type')
          if type == 'withdraw':
              type = 'withdrawal'
          status = self.parse_transaction_status(self.safe_string(transaction, 'state'))
          tag = self.safe_string(transaction, 'address-tag')
          feeCost = self.safe_float(transaction, 'fee')
          if feeCost is not None:
              feeCost = abs(feeCost)
          return {
              'info': transaction,
              'id': self.safe_string(transaction, 'id'),
              'txid': self.safe_string(transaction, 'tx-hash'),
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'address': self.safe_string(transaction, 'address'),
              'tag': tag,
              'type': type,
              'amount': self.safe_float(transaction, 'amount'),
              'currency': code,
              'status': status,
              'updated': updated,
              'fee': {
                  'currency': code,
                  'cost': feeCost,
                  'rate': None,
              },
          }
  
      def parse_transaction_status(self, status):
          statuses = {
              # deposit statuses
              'unknown': 'failed',
              'confirming': 'pending',
              'confirmed': 'ok',
              'safe': 'ok',
              'orphan': 'failed',
              # withdrawal statuses
              'submitted': 'pending',
              'canceled': 'canceled',
              'reexamine': 'pending',
              'reject': 'failed',
              'pass': 'pending',
              'wallet-reject': 'failed',
              # 'confirmed': 'ok',  # present in deposit statuses
              'confirm-error': 'failed',
              'repealed': 'failed',
              'wallet-transfer': 'pending',
              'pre-transfer': 'pending',
          }
          return self.safe_string(statuses, status, status)
  
      def withdraw(self, code, amount, address, tag=None, params={}):
          self.load_markets()
          self.check_address(address)
          currency = self.currency(code)
          request = {
              'address': address,  # only supports existing addresses in your withdraw address list
              'amount': amount,
              'currency': currency['id'].lower(),
          }
          if tag is not None:
              request['addr-tag'] = tag  # only for XRP?
          response = self.privatePostDwWithdrawApiCreate(self.extend(request, params))
          id = self.safe_string(response, 'data')
          return {
              'info': response,
              'id': id,
          }
  
      def sign(self, path, api='public', method='GET', params={}, headers=None, body=None):
          url = '/'
          if api == 'market':
              url += api
          elif (api == 'public') or (api == 'private'):
              url += self.version
          elif (api == 'v2Public') or (api == 'v2Private'):
              url += 'v2'
          url += '/' + self.implode_params(path, params)
          query = self.omit(params, self.extract_params(path))
          if api == 'private' or api == 'v2Private':
              self.check_required_credentials()
              timestamp = self.ymdhms(self.milliseconds(), 'T')
              request = {
                  'SignatureMethod': 'HmacSHA256',
                  'SignatureVersion': '2',
                  'AccessKeyId': self.apiKey,
                  'Timestamp': timestamp,
              }
              if method != 'POST':
                  request = self.extend(request, query)
              request = self.keysort(request)
              auth = self.urlencode(request)
              # unfortunately, PHP demands double quotes for the escaped newline symbol
              # eslint-disable-next-line quotes
              payload = "\n".join([method, self.hostname, url, auth])
              signature = self.hmac(self.encode(payload), self.encode(self.secret), hashlib.sha256, 'base64')
              auth += '&' + self.urlencode({'Signature': signature})
              url += '?' + auth
              if method == 'POST':
                  body = self.json(query)
                  headers = {
                      'Content-Type': 'application/json',
                  }
              else:
                  headers = {
                      'Content-Type': 'application/x-www-form-urlencoded',
                  }
          else:
              if params:
                  url += '?' + self.urlencode(params)
          url = self.implode_params(self.urls['api'][api], {
              'hostname': self.hostname,
          }) + url
          return {'url': url, 'method': method, 'body': body, 'headers': headers}
  
      def handle_errors(self, httpCode, reason, url, method, headers, body, response, requestHeaders, requestBody):
          if response is None:
              return  # fallback to default error handler
          if 'status' in response:
              #
              #     {"status":"error","err-code":"order-limitorder-amount-min-error","err-msg":"limit order amount error, min: `0.001`","data":null}
              #
              status = self.safe_string(response, 'status')
              if status == 'error':
                  code = self.safe_string(response, 'err-code')
                  feedback = self.id + ' ' + body
                  self.throw_exactly_matched_exception(self.exceptions['exact'], code, feedback)
                  message = self.safe_string(response, 'err-msg')
                  self.throw_exactly_matched_exception(self.exceptions['exact'], message, feedback)
                  raise ExchangeError(feedback)
  