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 math
  from ccxt.base.errors import ExchangeError
  from ccxt.base.errors import AuthenticationError
  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 InvalidOrder
  from ccxt.base.errors import OrderNotFound
  from ccxt.base.errors import DuplicateOrderId
  from ccxt.base.errors import ExchangeNotAvailable
  from ccxt.base.precise import Precise
  
  
  class wavesexchange(Exchange):
  
      def describe(self):
          return self.deep_extend(super(wavesexchange, self).describe(), {
              'id': 'wavesexchange',
              'name': 'Waves.Exchange',
              'countries': ['CH'],  # Switzerland
              'certified': True,
              'pro': False,
              'has': {
                  'CORS': None,
                  'spot': True,
                  'margin': False,
                  'swap': False,
                  'future': False,
                  'option': False,
                  'addMargin': False,
                  'cancelOrder': True,
                  'createMarketOrder': True,
                  'createOrder': True,
                  'createReduceOnlyOrder': False,
                  'createStopLimitOrder': False,
                  'createStopMarketOrder': False,
                  'createStopOrder': False,
                  'fetchBalance': True,
                  'fetchBorrowRate': False,
                  'fetchBorrowRateHistories': False,
                  'fetchBorrowRateHistory': False,
                  'fetchBorrowRates': False,
                  'fetchBorrowRatesPerSymbol': False,
                  'fetchClosedOrders': True,
                  'fetchDepositAddress': True,
                  'fetchFundingHistory': False,
                  'fetchFundingRate': False,
                  'fetchFundingRateHistory': False,
                  'fetchFundingRates': False,
                  'fetchIndexOHLCV': False,
                  'fetchLeverage': False,
                  'fetchLeverageTiers': False,
                  'fetchMarkets': True,
                  'fetchMarkOHLCV': False,
                  'fetchMyTrades': True,
                  'fetchOHLCV': True,
                  'fetchOpenInterestHistory': False,
                  'fetchOpenOrders': True,
                  'fetchOrder': True,
                  'fetchOrderBook': True,
                  'fetchOrders': True,
                  'fetchPosition': False,
                  'fetchPositions': False,
                  'fetchPositionsRisk': False,
                  'fetchPremiumIndexOHLCV': False,
                  'fetchTicker': True,
                  'fetchTrades': True,
                  'fetchTransfer': False,
                  'fetchTransfers': False,
                  'reduceMargin': False,
                  'setLeverage': False,
                  'setMarginMode': False,
                  'setPositionMode': False,
                  'signIn': True,
                  'transfer': False,
                  'withdraw': True,
              },
              'timeframes': {
                  '1m': '1m',
                  '5m': '5m',
                  '15m': '15m',
                  '30m': '30m',
                  '1h': '1h',
                  '2h': '2h',
                  '3h': '3h',
                  '4h': '4h',
                  '6h': '6h',
                  '12h': '12h',
                  '1d': '1d',
                  '1w': '1w',
                  '1M': '1M',
              },
              'urls': {
                  'logo': 'https://user-images.githubusercontent.com/1294454/84547058-5fb27d80-ad0b-11ea-8711-78ac8b3c7f31.jpg',
                  'test': {
                      'matcher': 'https://matcher-testnet.waves.exchange',
                      'node': 'https://nodes-testnet.wavesnodes.com',
                      'public': 'https://api-testnet.wavesplatform.com/v0',
                      'private': 'https://api-testnet.waves.exchange/v1',
                      'forward': 'https://testnet.waves.exchange/api/v1/forward/matcher',
                      'market': 'https://testnet.waves.exchange/api/v1/forward/marketdata/api/v1',
                  },
                  'api': {
                      'matcher': 'https://matcher.waves.exchange',
                      'node': 'https://nodes.waves.exchange',
                      'public': 'https://api.wavesplatform.com/v0',
                      'private': 'https://api.waves.exchange/v1',
                      'forward': 'https://waves.exchange/api/v1/forward/matcher',
                      'market': 'https://waves.exchange/api/v1/forward/marketdata/api/v1',
                  },
                  'doc': 'https://docs.waves.exchange',
                  'www': 'https://waves.exchange',
              },
              'api': {
                  'matcher': {
                      'get': [
                          'matcher',
                          'matcher/settings',
                          'matcher/settings/rates',
                          'matcher/balance/reserved/{publicKey}',
                          'matcher/debug/allSnashotOffsets',
                          'matcher/debug/currentOffset',
                          'matcher/debug/lastOffset',
                          'matcher/debug/oldestSnapshotOffset',
                          'matcher/orderbook',
                          'matcher/orderbook/{amountAsset}/{priceAsset}',
                          'matcher/orderbook/{baseId}/{quoteId}/publicKey/{publicKey}',
                          'matcher/orderbook/{baseId}/{quoteId}/{orderId}',
                          'matcher/orderbook/{baseId}/{quoteId}/info',
                          'matcher/orderbook/{baseId}/{quoteId}/status',
                          'matcher/orderbook/{baseId}/{quoteId}/tradeableBalance/{address}',
                          'matcher/orderbook/{publicKey}',
                          'matcher/orderbook/{publicKey}/{orderId}',
                          'matcher/orders/{address}',
                          'matcher/orders/{address}/{orderId}',
                          'matcher/transactions/{orderId}',
                      ],
                      'post': [
                          'matcher/orderbook',
                          'matcher/orderbook/market',
                          'matcher/orderbook/cancel',
                          'matcher/orderbook/{baseId}/{quoteId}/cancel',
                          'matcher/orderbook/{amountAsset}/{priceAsset}/calculateFee',
                          'matcher/debug/saveSnapshots',
                          'matcher/orders/{address}/cancel',
                          'matcher/orders/cancel/{orderId}',
                      ],
                      'delete': [
                          'matcher/orderbook/{baseId}/{quoteId}',
                          'matcher/settings/rates/{assetId}',
                      ],
                      'put': [
                          'matcher/settings/rates/{assetId}',
                      ],
                  },
                  'node': {
                      'get': [
                          'addresses',
                          'addresses/balance/{address}',
                          'addresses/balance/{address}/{confirmations}',
                          'addresses/balance/details/{address}',
                          'addresses/data/{address}',
                          'addresses/data/{address}/{key}',
                          'addresses/effectiveBalance/{address}',
                          'addresses/effectiveBalance/{address}/{confirmations}',
                          'addresses/publicKey/{publicKey}',
                          'addresses/scriptInfo/{address}',
                          'addresses/scriptInfo/{address}/meta',
                          'addresses/seed/{address}',
                          'addresses/seq/{from}/{to}',
                          'addresses/validate/{address}',
                          'alias/by-address/{address}',
                          'alias/by-alias/{alias}',
                          'assets/{assetId}/distribution/{height}/{limit}',
                          'assets/balance/{address}',
                          'assets/balance/{address}/{assetId}',
                          'assets/details/{assetId}',
                          'assets/nft/{address}/limit/{limit}',
                          'blockchain/rewards',
                          'blockchain/rewards/height',
                          'blocks/address/{address}/{from}/{to}/',
                          'blocks/at/{height}',
                          'blocks/delay/{signature}/{blockNum}',
                          'blocks/first',
                          'blocks/headers/last',
                          'blocks/headers/seq/{from}/{to}',
                          'blocks/height',
                          'blocks/height/{signature}',
                          'blocks/last',
                          'blocks/seq/{from}/{to}',
                          'blocks/signature/{signature}',
                          'consensus/algo',
                          'consensus/basetarget',
                          'consensus/basetarget/{blockId}',
                          'consensus/{generatingbalance}/address',
                          'consensus/generationsignature',
                          'consensus/generationsignature/{blockId}',
                          'debug/balances/history/{address}',
                          'debug/blocks/{howMany}',
                          'debug/configInfo',
                          'debug/historyInfo',
                          'debug/info',
                          'debug/minerInfo',
                          'debug/portfolios/{address}',
                          'debug/state',
                          'debug/stateChanges/address/{address}',
                          'debug/stateChanges/info/{id}',
                          'debug/stateWaves/{height}',
                          'leasing/active/{address}',
                          'node/state',
                          'node/version',
                          'peers/all',
                          'peers/blacklisted',
                          'peers/connected',
                          'peers/suspended',
                          'transactions/address/{address}/limit/{limit}',
                          'transactions/info/{id}',
                          'transactions/status',
                          'transactions/unconfirmed',
                          'transactions/unconfirmed/info/{id}',
                          'transactions/unconfirmed/size',
                          'utils/seed',
                          'utils/seed/{length}',
                          'utils/time',
                          'wallet/seed',
                      ],
                      'post': [
                          'addresses',
                          'addresses/data/{address}',
                          'addresses/sign/{address}',
                          'addresses/signText/{address}',
                          'addresses/verify/{address}',
                          'addresses/verifyText/{address}',
                          'debug/blacklist',
                          'debug/print',
                          'debug/rollback',
                          'debug/validate',
                          'node/stop',
                          'peers/clearblacklist',
                          'peers/connect',
                          'transactions/broadcast',
                          'transactions/calculateFee',
                          'tranasctions/sign',
                          'transactions/sign/{signerAddress}',
                          'tranasctions/status',
                          'utils/hash/fast',
                          'utils/hash/secure',
                          'utils/script/compileCode',
                          'utils/script/compileWithImports',
                          'utils/script/decompile',
                          'utils/script/estimate',
                          'utils/sign/{privateKey}',
                          'utils/transactionsSerialize',
                      ],
                      'delete': [
                          'addresses/{address}',
                          'debug/rollback-to/{signature}',
                      ],
                  },
                  'public': {
                      'get': [
                          'assets',
                          'pairs',
                          'candles/{baseId}/{quoteId}',
                          'transactions/exchange',
                      ],
                  },
                  'private': {
                      'get': [
                          'deposit/addresses/{currency}',
                          'deposit/addresses/{currency}/{platform}',
                          'platforms',
                          'deposit/currencies',
                          'withdraw/currencies',
                          'withdraw/addresses/{currency}/{address}',
                      ],
                      'post': [
                          'oauth2/token',
                      ],
                  },
                  'forward': {
                      'get': [
                          'matcher/orders/{address}',  # can't get the orders endpoint to work with the matcher api
                          'matcher/orders/{address}/{orderId}',
                      ],
                      'post': [
                          'matcher/orders/{wavesAddress}/cancel',
                      ],
                  },
                  'market': {
                      'get': [
                          'tickers',
                      ],
                  },
              },
              'currencies': {
                  'WX': {'id': 'EMAMLxDnv3xiz8RXg8Btj33jcEw3wLczL3JKYYmuubpc', 'numericId': None, 'code': 'WX', 'precision': 8},
              },
              'options': {
                  'allowedCandles': 1440,
                  'accessToken': None,
                  'createMarketBuyOrderRequiresPrice': True,
                  'matcherPublicKey': None,
                  'quotes': None,
                  'createOrderDefaultExpiry': 2419200000,  # 60 * 60 * 24 * 28 * 1000
                  'wavesAddress': None,
                  'withdrawFeeUSDN': 7420,
                  'withdrawFeeWAVES': 100000,
                  'wavesPrecision': 8,
                  'messagePrefix': 'W',  # W for production, T for testnet
                  'networks': {
                      'ERC20': 'ETH',
                      'BEP20': 'BSC',
                  },
                  'reverseNetworks': {
                      'ETH': 'ERC20',
                      'BSC': 'BEP20',
                  },
              },
              'commonCurrencies': {
                  'EGG': 'Waves Ducks',
              },
              'requiresEddsa': True,
              'exceptions': {
                  '3147270': InsufficientFunds,  # https://github.com/wavesplatform/matcher/wiki/List-of-all-errors
                  '112': InsufficientFunds,
                  '4': ExchangeError,
                  '13': ExchangeNotAvailable,
                  '14': ExchangeNotAvailable,
                  '3145733': AccountSuspended,
                  '3148040': DuplicateOrderId,
                  '3148801': AuthenticationError,
                  '9440512': AuthenticationError,
                  '9440771': BadSymbol,
                  '9441026': InvalidOrder,
                  '9441282': InvalidOrder,
                  '9441286': InvalidOrder,
                  '9441295': InvalidOrder,
                  '9441540': InvalidOrder,
                  '9441542': InvalidOrder,
                  '106954752': AuthenticationError,
                  '106954769': AuthenticationError,
                  '106957828': AuthenticationError,
                  '106960131': AuthenticationError,
                  '106981137': AuthenticationError,
                  '9437193': OrderNotFound,
                  '1048577': BadRequest,
                  '1051904': AuthenticationError,
              },
          })
  
      def set_sandbox_mode(self, enabled):
          self.options['messagePrefix'] = 'T' if enabled else 'W'
          return super(wavesexchange, self).set_sandbox_mode(enabled)
  
      def get_fees_for_asset(self, symbol, side, amount, price, params={}):
          self.load_markets()
          market = self.market(symbol)
          amount = self.amount_to_precision(symbol, amount)
          price = self.price_to_precision(symbol, price)
          request = self.extend({
              'amountAsset': market['baseId'],
              'priceAsset': market['quoteId'],
              'orderType': side,
              'amount': amount,
              'price': price,
          }, params)
          return self.matcherPostMatcherOrderbookAmountAssetPriceAssetCalculateFee(request)
  
      def calculate_fee(self, symbol, type, side, amount, price, takerOrMaker='taker', params={}):
          response = self.get_fees_for_asset(symbol, side, amount, price)
          # {
          #     "base":{
          #        "feeAssetId":"WAVES",
          #        "matcherFee":"1000000"
          #     },
          #     "discount":{
          #        "feeAssetId":"EMAMLxDnv3xiz8RXg8Btj33jcEw3wLczL3JKYYmuubpc",
          #        "matcherFee":"4077612"
          #     }
          #  }
          isDiscountFee = self.safe_value(params, 'isDiscountFee', False)
          mode = None
          if isDiscountFee:
              mode = self.safe_value(response, 'discount')
          else:
              mode = self.safe_value(response, 'base')
          matcherFee = self.safe_string(mode, 'matcherFee')
          feeAssetId = self.safe_string(mode, 'feeAssetId')
          feeAsset = self.safe_currency_code(feeAssetId)
          adjustedMatcherFee = self.currency_from_precision(feeAsset, matcherFee)
          amountAsString = self.number_to_string(amount)
          priceAsString = self.number_to_string(price)
          feeCost = self.fee_to_precision(symbol, self.parse_number(adjustedMatcherFee))
          feeRate = Precise.string_div(adjustedMatcherFee, Precise.string_mul(amountAsString, priceAsString))
          return {
              'type': takerOrMaker,
              'currency': feeAsset,
              'rate': self.parse_number(feeRate),
              'cost': self.parse_number(feeCost),
          }
  
      def get_quotes(self):
          quotes = self.safe_value(self.options, 'quotes')
          if quotes:
              return quotes
          else:
              # currencies can have any name because you can create you own token
              # as a result someone can create a fake token called BTC
              # we use self mapping to determine the real tokens
              # https://docs.waves.exchange/en/waves-matcher/matcher-api#asset-pair
              response = self.matcherGetMatcherSettings()
              # {
              #   "orderVersions": [
              #     1,
              #     2,
              #     3
              #   ],
              #   "success": True,
              #   "matcherPublicKey": "9cpfKN9suPNvfeUNphzxXMjcnn974eme8ZhWUjaktzU5",
              #   "orderFee": {
              #     "dynamic": {
              #       "baseFee": 300000,
              #       "rates": {
              #         "34N9YcEETLWn93qYQ64EsP1x89tSruJU44RrEMSXXEPJ": 1.22639597,
              #         "62LyMjcr2DtiyF5yVXFhoQ2q414VPPJXjsNYp72SuDCH": 0.00989643,
              #         "HZk1mbfuJpmxU1Fs4AX5MWLVYtctsNcg6e2C6VKqK8zk": 0.0395674,
              #         "8LQW8f7P5d5PZM7GtZEBgaqRPGSzS3DfPuiXrURJ4AJS": 0.00018814,
              #         "4LHHvYGNKJUg5hj65aGD5vgScvCBmLpdRFtjokvCjSL8": 26.19721262,
              #         "474jTeYx2r2Va35794tCScAXWJG9hU2HcgxzMowaZUnu": 0.00752978,
              #         "DG2xFkPdDwKUoBkzGAhQtLpSGzfXLiCYPEzeKH2Ad24p": 1.84575,
              #         "B3uGHFRpSUuGEDWjqB9LWWxafQj8VTvpMucEyoxzws5H": 0.02330273,
              #         "zMFqXuoyrn5w17PFurTqxB7GsS71fp9dfk6XFwxbPCy": 0.00721412,
              #         "5WvPKSJXzVE2orvbkJ8wsQmmQKqTv9sGBPksV4adViw3": 0.02659103,
              #         "WAVES": 1,
              #         "BrjUWjndUanm5VsJkbUip8VRYy6LWJePtxya3FNv4TQa": 0.03433583
              #       }
              #     }
              #   },
              #   "networkByte": 87,
              #   "matcherVersion": "2.1.3.5",
              #   "status": "SimpleResponse",
              #   "priceAssets": [
              #     "Ft8X1v1LTa1ABafufpaCWyVj8KkaxUWE6xBhW6sNFJck",
              #     "DG2xFkPdDwKUoBkzGAhQtLpSGzfXLiCYPEzeKH2Ad24p",
              #     "34N9YcEETLWn93qYQ64EsP1x89tSruJU44RrEMSXXEPJ",
              #     "Gtb1WRznfchDnTh37ezoDTJ4wcoKaRsKqKjJjy7nm2zU",
              #     "2mX5DzVKWrAJw8iwdJnV2qtoeVG9h5nTDpTqC1wb1WEN",
              #     "8LQW8f7P5d5PZM7GtZEBgaqRPGSzS3DfPuiXrURJ4AJS",
              #     "WAVES",
              #     "474jTeYx2r2Va35794tCScAXWJG9hU2HcgxzMowaZUnu",
              #     "zMFqXuoyrn5w17PFurTqxB7GsS71fp9dfk6XFwxbPCy",
              #     "62LyMjcr2DtiyF5yVXFhoQ2q414VPPJXjsNYp72SuDCH",
              #     "HZk1mbfuJpmxU1Fs4AX5MWLVYtctsNcg6e2C6VKqK8zk",
              #     "B3uGHFRpSUuGEDWjqB9LWWxafQj8VTvpMucEyoxzws5H",
              #     "5WvPKSJXzVE2orvbkJ8wsQmmQKqTv9sGBPksV4adViw3",
              #     "BrjUWjndUanm5VsJkbUip8VRYy6LWJePtxya3FNv4TQa",
              #     "4LHHvYGNKJUg5hj65aGD5vgScvCBmLpdRFtjokvCjSL8"
              #   ]
              # }
              quotes = {}
              priceAssets = self.safe_value(response, 'priceAssets')
              for i in range(0, len(priceAssets)):
                  quotes[priceAssets[i]] = True
              self.options['quotes'] = quotes
              return quotes
  
      def fetch_markets(self, params={}):
          """
          retrieves data on all markets for wavesexchange
          :param dict params: extra parameters specific to the exchange api endpoint
          :returns [dict]: an array of objects representing market data
          """
          response = self.marketGetTickers()
          #
          #   [
          #       {
          #           "symbol": "WAVES/BTC",
          #           "amountAssetID": "WAVES",
          #           "amountAssetName": "Waves",
          #           "amountAssetDecimals": 8,
          #           "amountAssetTotalSupply": "106908766.00000000",
          #           "amountAssetMaxSupply": "106908766.00000000",
          #           "amountAssetCirculatingSupply": "106908766.00000000",
          #           "priceAssetID": "8LQW8f7P5d5PZM7GtZEBgaqRPGSzS3DfPuiXrURJ4AJS",
          #           "priceAssetName": "WBTC",
          #           "priceAssetDecimals": 8,
          #           "priceAssetTotalSupply": "20999999.96007507",
          #           "priceAssetMaxSupply": "20999999.96007507",
          #           "priceAssetCirculatingSupply": "20999999.66019601",
          #           "24h_open": "0.00032688",
          #           "24h_high": "0.00033508",
          #           "24h_low": "0.00032443",
          #           "24h_close": "0.00032806",
          #           "24h_vwap": "0.00032988",
          #           "24h_volume": "42349.69440104",
          #           "24h_priceVolume": "13.97037207",
          #           "timestamp":1640232379124
          #       }
          #       ...
          #   ]
          #
          result = []
          for i in range(0, len(response)):
              entry = response[i]
              baseId = self.safe_string(entry, 'amountAssetID')
              quoteId = self.safe_string(entry, 'priceAssetID')
              id = baseId + '/' + quoteId
              marketId = self.safe_string(entry, 'symbol')
              base, quote = marketId.split('/')
              base = self.safe_currency_code(base)
              quote = self.safe_currency_code(quote)
              symbol = base + '/' + quote
              result.append({
                  'id': id,
                  'symbol': symbol,
                  'base': base,
                  'quote': quote,
                  'settle': None,
                  'baseId': baseId,
                  'quoteId': quoteId,
                  'settleId': None,
                  'type': 'spot',
                  'spot': True,
                  'margin': False,
                  'swap': False,
                  'future': False,
                  'option': False,
                  'active': None,
                  'contract': False,
                  'linear': None,
                  'inverse': None,
                  'contractSize': None,
                  'expiry': None,
                  'expiryDatetime': None,
                  'strike': None,
                  'optionType': None,
                  'precision': {
                      'amount': self.safe_integer(entry, 'amountAssetDecimals'),
                      'price': self.safe_integer(entry, 'priceAssetDecimals'),
                  },
                  'limits': {
                      'leverage': {
                          'min': None,
                          'max': None,
                      },
                      'amount': {
                          'min': None,
                          'max': None,
                      },
                      'price': {
                          'min': None,
                          'max': None,
                      },
                      'cost': {
                          'min': None,
                          'max': None,
                      },
                  },
                  'info': entry,
              })
          return result
  
      def fetch_order_book(self, symbol, limit=None, params={}):
          """
          fetches information on open orders with bid(buy) and ask(sell) prices, volumes and other data
          :param str symbol: unified symbol of the market to fetch the order book for
          :param int|None limit: the maximum amount of order book entries to return
          :param dict params: extra parameters specific to the wavesexchange api endpoint
          :returns dict: A dictionary of `order book structures <https://docs.ccxt.com/en/latest/manual.html#order-book-structure>` indexed by market symbols
          """
          self.load_markets()
          market = self.market(symbol)
          request = self.extend({
              'amountAsset': market['baseId'],
              'priceAsset': market['quoteId'],
          }, params)
          response = self.matcherGetMatcherOrderbookAmountAssetPriceAsset(request)
          timestamp = self.safe_integer(response, 'timestamp')
          bids = self.parse_order_book_side(self.safe_value(response, 'bids'), market, limit)
          asks = self.parse_order_book_side(self.safe_value(response, 'asks'), market, limit)
          return {
              'symbol': symbol,
              'bids': bids,
              'asks': asks,
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'nonce': None,
          }
  
      def parse_order_book_side(self, bookSide, market=None, limit=None):
          precision = market['precision']
          wavesPrecision = self.safe_integer(self.options, 'wavesPrecision', 8)
          amountPrecision = math.pow(10, precision['amount'])
          difference = precision['amount'] - precision['price']
          pricePrecision = math.pow(10, wavesPrecision - difference)
          result = []
          for i in range(0, len(bookSide)):
              entry = bookSide[i]
              price = self.safe_integer(entry, 'price', 0) / pricePrecision
              amount = self.safe_integer(entry, 'amount', 0) / amountPrecision
              if (limit is not None) and (i > limit):
                  break
              result.append([price, amount])
          return result
  
      def check_required_keys(self):
          if self.apiKey is None:
              raise AuthenticationError(self.id + ' requires apiKey credential')
          if self.secret is None:
              raise AuthenticationError(self.id + ' requires secret credential')
          apiKeyBytes = None
          secretKeyBytes = None
          try:
              apiKeyBytes = self.base58_to_binary(self.apiKey)
          except Exception as e:
              raise AuthenticationError(self.id + ' apiKey must be a base58 encoded public key')
          try:
              secretKeyBytes = self.base58_to_binary(self.secret)
          except Exception as e:
              raise AuthenticationError(self.id + ' secret must be a base58 encoded private key')
          hexApiKeyBytes = self.binary_to_base16(apiKeyBytes)
          hexSecretKeyBytes = self.binary_to_base16(secretKeyBytes)
          if len(hexApiKeyBytes) != 64:
              raise AuthenticationError(self.id + ' apiKey must be a base58 encoded public key')
          if len(hexSecretKeyBytes) != 64:
              raise AuthenticationError(self.id + ' secret must be a base58 encoded private key')
  
      def sign(self, path, api='public', method='GET', params={}, headers=None, body=None):
          query = self.omit(params, self.extract_params(path))
          isCancelOrder = path == 'matcher/orders/{wavesAddress}/cancel'
          path = self.implode_params(path, params)
          url = self.urls['api'][api] + '/' + path
          queryString = self.urlencode_with_array_repeat(query)
          if (api == 'private') or (api == 'forward'):
              headers = {
                  'Accept': 'application/json',
              }
              accessToken = self.safe_string(self.options, 'accessToken')
              if accessToken:
                  headers['Authorization'] = 'Bearer ' + accessToken
              if method == 'POST':
                  headers['content-type'] = 'application/json'
              else:
                  headers['content-type'] = 'application/x-www-form-urlencoded'
              if isCancelOrder:
                  body = self.json([query['orderId']])
                  queryString = ''
              if len(queryString) > 0:
                  url += '?' + queryString
          elif api == 'matcher':
              if method == 'POST':
                  headers = {
                      'Accept': 'application/json',
                      'Content-Type': 'application/json',
                  }
                  body = self.json(query)
              else:
                  headers = query
          else:
              if method == 'POST':
                  headers = {
                      'content-type': 'application/json',
                  }
                  body = self.json(query)
              else:
                  headers = {
                      'content-type': 'application/x-www-form-urlencoded',
                  }
                  if len(queryString) > 0:
                      url += '?' + queryString
          return {'url': url, 'method': method, 'body': body, 'headers': headers}
  
      def sign_in(self, params={}):
          if not self.safe_string(self.options, 'accessToken'):
              prefix = 'ffffff01'
              expiresDelta = 60 * 60 * 24 * 7
              seconds = self.sum(self.seconds(), expiresDelta)
              seconds = str(seconds)
              clientId = 'waves.exchange'
              # W for production, T for testnet
              defaultMessagePrefix = self.safe_string(self.options, 'messagePrefix', 'W')
              message = defaultMessagePrefix + ':' + clientId + ':' + seconds
              messageHex = self.binary_to_base16(self.encode(message))
              payload = prefix + messageHex
              hexKey = self.binary_to_base16(self.base58_to_binary(self.secret))
              signature = self.eddsa(payload, hexKey, 'ed25519')
              request = {
                  'grant_type': 'password',
                  'scope': 'general',
                  'username': self.apiKey,
                  'password': seconds + ':' + signature,
                  'client_id': clientId,
              }
              response = self.privatePostOauth2Token(request)
              # {access_token: 'eyJhbGciOXJSUzI1NiIsInR5cCI6IkpXVCJ9.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.B-XwexBnUAzbWknVN68RKT0ZP5w6Qk1SKJ8usL3OIwDEzCUUX9PjW-5TQHmiCRcA4oft8lqXEiCwEoNfsblCo_jTpRo518a1vZkIbHQk0-13Dm1K5ewGxfxAwBk0g49odcbKdjl64TN1yM_PO1VtLVuiTeZP-XF-S42Uj-7fcO-r7AulyQLuTE0uo-Qdep8HDCk47rduZwtJOmhFbCCnSgnLYvKWy3CVTeldsR77qxUY-vy8q9McqeP7Id-_MWnsob8vWXpkeJxaEsw1Fke1dxApJaJam09VU8EB3ZJWpkT7V8PdafIrQGeexx3jhKKxo7rRb4hDV8kfpVoCgkvFan',
              #   token_type: 'bearer',
              #   refresh_token: 'eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.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.gD1Qj0jfqayfZpBvNY0t3ccMyK5hdbT7dY-_5L6LxwV0Knan4ndEtvygxlTOczmJUKtnA4T1r5GBFgNMZTvtViKZIbqZNysEg2OY8UxwDaF4VPeGJLg_QXEnn8wBeBQdyMafh9UQdwD2ci7x-saM4tOAGmncAygfTDxy80201gwDhfAkAGerb9kL00oWzSJScldxu--pNLDBUEHZt52MSEel10HGrzvZkkvvSh67vcQo5TOGb5KG6nh65UdJCwr41AVz4fbQPP-N2Nkxqy0TE_bqVzZxExXgvcS8TS0Z82T3ijJa_ct7B9wblpylBnvmyj3VycUzufD6uy8MUGq32D',
              #   expires_in: 604798,
              #   scope: 'general'}
              self.options['accessToken'] = self.safe_string(response, 'access_token')
              return self.options['accessToken']
  
      def parse_ticker(self, ticker, market=None):
          #
          #     {
          #         "__type":"pair",
          #         "data":{
          #             "firstPrice":0.00012512,
          #             "lastPrice":0.00012441,
          #             "low":0.00012167,
          #             "high":0.00012768,
          #             "weightedAveragePrice":0.000124710697407246,
          #             "volume":209554.26356614,
          #             "quoteVolume":26.1336583539951,
          #             "volumeWaves":209554.26356614,
          #             "txsCount":6655
          #         },
          #         "amountAsset":"WAVES",
          #         "priceAsset":"8LQW8f7P5d5PZM7GtZEBgaqRPGSzS3DfPuiXrURJ4AJS"
          #     }
          #
          timestamp = None
          baseId = self.safe_string(ticker, 'amountAsset')
          quoteId = self.safe_string(ticker, 'priceAsset')
          symbol = None
          if (baseId is not None) and (quoteId is not None):
              marketId = baseId + '/' + quoteId
              if marketId in self.markets_by_id:
                  market = self.markets_by_id[marketId]
              else:
                  base = self.safe_currency_code(baseId)
                  quote = self.safe_currency_code(quoteId)
                  symbol = base + '/' + quote
          if (symbol is None) and (market is not None):
              symbol = market['symbol']
          data = self.safe_value(ticker, 'data', {})
          last = self.safe_string(data, 'lastPrice')
          low = self.safe_string(data, 'low')
          high = self.safe_string(data, 'high')
          vwap = self.safe_string(data, 'weightedAveragePrice')
          baseVolume = self.safe_string(data, 'volume')
          quoteVolume = self.safe_string(data, 'quoteVolume')
          open = self.safe_string(data, 'firstPrice')
          return self.safe_ticker({
              'symbol': symbol,
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'high': high,
              'low': low,
              'bid': None,
              'bidVolume': None,
              'ask': None,
              'askVolume': None,
              'vwap': vwap,
              'open': open,
              'close': last,
              'last': last,
              'previousClose': None,
              'change': None,
              'percentage': None,
              'average': None,
              'baseVolume': baseVolume,
              'quoteVolume': quoteVolume,
              'info': ticker,
          }, market)
  
      def fetch_ticker(self, symbol, params={}):
          """
          fetches a price ticker, a statistical calculation with the information calculated over the past 24 hours for a specific market
          :param str symbol: unified symbol of the market to fetch the ticker for
          :param dict params: extra parameters specific to the wavesexchange api endpoint
          :returns dict: a `ticker structure <https://docs.ccxt.com/en/latest/manual.html#ticker-structure>`
          """
          self.load_markets()
          market = self.market(symbol)
          request = {
              'pairs': market['id'],
          }
          response = self.publicGetPairs(self.extend(request, params))
          #
          #     {
          #         "__type":"list",
          #         "data":[
          #             {
          #                 "__type":"pair",
          #                 "data":{
          #                     "firstPrice":0.00012512,
          #                     "lastPrice":0.00012441,
          #                     "low":0.00012167,
          #                     "high":0.00012768,
          #                     "weightedAveragePrice":0.000124710697407246,
          #                     "volume":209554.26356614,
          #                     "quoteVolume":26.1336583539951,
          #                     "volumeWaves":209554.26356614,
          #                     "txsCount":6655
          #                 },
          #                 "amountAsset":"WAVES",
          #                 "priceAsset":"8LQW8f7P5d5PZM7GtZEBgaqRPGSzS3DfPuiXrURJ4AJS"
          #             }
          #         ]
          #     }
          #
          data = self.safe_value(response, 'data', [])
          ticker = self.safe_value(data, 0, {})
          return self.parse_ticker(ticker, market)
  
      def fetch_ohlcv(self, symbol, timeframe='1m', since=None, limit=None, params={}):
          """
          fetches historical candlestick data containing the open, high, low, and close price, and the volume of a market
          :param str symbol: unified symbol of the market to fetch OHLCV data for
          :param str timeframe: the length of time each candle represents
          :param int|None since: timestamp in ms of the earliest candle to fetch
          :param int|None limit: the maximum amount of candles to fetch
          :param dict params: extra parameters specific to the wavesexchange api endpoint
          :returns [[int]]: A list of candles ordered as timestamp, open, high, low, close, volume
          """
          self.load_markets()
          market = self.market(symbol)
          request = {
              'baseId': market['baseId'],
              'quoteId': market['quoteId'],
              'interval': self.timeframes[timeframe],
          }
          allowedCandles = self.safe_integer(self.options, 'allowedCandles', 1440)
          if limit is None:
              limit = allowedCandles
          limit = min(allowedCandles, limit)
          duration = self.parse_timeframe(timeframe) * 1000
          if since is None:
              durationRoundedTimestamp = int(self.milliseconds() / duration) * duration
              delta = (limit - 1) * duration
              timeStart = durationRoundedTimestamp - delta
              request['timeStart'] = str(timeStart)
          else:
              request['timeStart'] = str(since)
              timeEnd = self.sum(since, duration * limit)
              request['timeEnd'] = str(timeEnd)
          response = self.publicGetCandlesBaseIdQuoteId(self.extend(request, params))
          #
          #     {
          #         "__type": "list",
          #         "data": [
          #             {
          #                 "__type": "candle",
          #                 "data": {
          #                     "time": "2020-06-09T14:47:00.000Z",
          #                     "open": 0.0250385,
          #                     "close": 0.0250385,
          #                     "high": 0.0250385,
          #                     "low": 0.0250385,
          #                     "volume": 0.01033012,
          #                     "quoteVolume": 0.00025865,
          #                     "weightedAveragePrice": 0.0250385,
          #                     "maxHeight": 2099399,
          #                     "txsCount": 5,
          #                     "timeClose": "2020-06-09T14:47:59.999Z"
          #                 }
          #             }
          #         ]
          #     }
          #
          data = self.safe_value(response, 'data', [])
          result = self.parse_ohlcvs(data, market, timeframe, since, limit)
          result = self.filter_future_candles(result)
          lastClose = None
          length = len(result)
          for i in range(0, len(result)):
              j = length - i - 1
              entry = result[j]
              open = entry[1]
              if open is None:
                  entry[1] = lastClose
                  entry[2] = lastClose
                  entry[3] = lastClose
                  entry[4] = lastClose
                  result[j] = entry
              lastClose = entry[4]
          return result
  
      def filter_future_candles(self, ohlcvs):
          result = []
          timestamp = self.milliseconds()
          for i in range(0, len(ohlcvs)):
              if ohlcvs[i][0] > timestamp:
                  # stop when getting data from the future
                  break
              result.append(ohlcvs[i])
          return result
  
      def parse_ohlcv(self, ohlcv, market=None):
          #
          #     {
          #         __type: 'candle',
          #         data: {
          #             time: '2020-06-05T20:46:00.000Z',
          #             open: 240.573975,
          #             close: 240.573975,
          #             high: 240.573975,
          #             low: 240.573975,
          #             volume: 0.01278413,
          #             quoteVolume: 3.075528,
          #             weightedAveragePrice: 240.573975,
          #             maxHeight: 2093895,
          #             txsCount: 5,
          #             timeClose: '2020-06-05T20:46:59.999Z'
          #         }
          #     }
          #
          data = self.safe_value(ohlcv, 'data', {})
          return [
              self.parse8601(self.safe_string(data, 'time')),
              self.safe_number(data, 'open'),
              self.safe_number(data, 'high'),
              self.safe_number(data, 'low'),
              self.safe_number(data, 'close'),
              self.safe_number(data, 'volume', 0),
          ]
  
      def fetch_deposit_address(self, code, params={}):
          self.sign_in()
          networks = self.safe_value(self.options, 'networks', {})
          rawNetwork = self.safe_string_upper(params, 'network')
          network = self.safe_string(networks, rawNetwork, rawNetwork)
          params = self.omit(params, ['network'])
          supportedCurrencies = self.privateGetPlatforms()
          #
          #     {
          #       "type": "list",
          #       "page_info": {
          #         "has_next_page": False,
          #         "last_cursor": null
          #       },
          #       "items": [
          #         {
          #           "type": "platform",
          #           "id": "ETH",
          #           "name": "Ethereum",
          #           "currencies": [
          #             "BAG",
          #             "BNT",
          #             "CRV",
          #             "EGG",
          #             "ETH",
          #             "EURN",
          #             "FL",
          #             "NSBT",
          #             "USDAP",
          #             "USDC",
          #             "USDFL",
          #             "USDN",
          #             "USDT",
          #             "WAVES"
          #           ]
          #         }
          #       ]
          #     }
          #
          currencies = {}
          networksByCurrency = {}
          items = self.safe_value(supportedCurrencies, 'items', [])
          for i in range(0, len(items)):
              entry = items[i]
              currencyId = self.safe_string(entry, 'id')
              innerCurrencies = self.safe_value(entry, 'currencies', [])
              for j in range(0, len(innerCurrencies)):
                  currencyCode = self.safe_string(innerCurrencies, j)
                  currencies[currencyCode] = True
                  if not (currencyCode in networksByCurrency):
                      networksByCurrency[currencyCode] = {}
                  networksByCurrency[currencyCode][currencyId] = True
          if not (code in currencies):
              codes = list(currencies.keys())
              raise ExchangeError(self.id + ' fetchDepositAddress() ' + code + ' not supported. Currency code must be one of ' + ', '.join(codes))
          response = None
          if network is None:
              request = {
                  'currency': code,
              }
              response = self.privateGetDepositAddressesCurrency(self.extend(request, params))
          else:
              supportedNetworks = networksByCurrency[code]
              if not (network in supportedNetworks):
                  supportedNetworkKeys = list(supportedNetworks.keys())
                  raise ExchangeError(self.id + ' ' + network + ' network ' + code + ' deposit address not supported. Network must be one of ' + ', '.join(supportedNetworkKeys))
              if network == 'WAVES':
                  request = {
                      'publicKey': self.apiKey,
                  }
                  response = self.nodeGetAddressesPublicKeyPublicKey(self.extend(request, request))
                  address = self.safe_string(response, 'address')
                  return {
                      'address': address,
                      'code': code,
                      'network': network,
                      'tag': None,
                      'info': response,
                  }
              else:
                  request = {
                      'currency': code,
                      'platform': network,
                  }
                  response = self.privateGetDepositAddressesCurrencyPlatform(self.extend(request, params))
          #
          # {
          #   "type": "deposit_addresses",
          #   "currency": {
          #     "type": "deposit_currency",
          #     "id": "ERGO",
          #     "waves_asset_id": "5dJj4Hn9t2Ve3tRpNGirUHy4yBK6qdJRAJYV21yPPuGz",
          #     "platform_id": "BSC",
          #     "decimals": 9,
          #     "status": "active",
          #     "allowed_amount": {
          #       "min": 0.001,
          #       "max": 100000
          #     },
          #     "fees": {
          #       "flat": 0,
          #       "rate": 0
          #     }
          #   },
          #   "deposit_addresses": [
          #     "9fRAAQjF8Yqg7qicQCL884zjimsRnuwsSavsM1rUdDaoG8mThku"
          #   ]
          # }
          currency = self.safe_value(response, 'currency')
          networkId = self.safe_string(currency, 'platform_id')
          reverseNetworks = self.safe_value(self.options, 'reverseNetworks', {})
          unifiedNetwork = self.safe_string(reverseNetworks, networkId, networkId)
          addresses = self.safe_value(response, 'deposit_addresses')
          address = self.safe_string(addresses, 0)
          return {
              'address': address,
              'code': code,
              'tag': None,
              'network': unifiedNetwork,
              'info': response,
          }
  
      def get_matcher_public_key(self):
          # self method returns a single string
          matcherPublicKey = self.safe_string(self.options, 'matcherPublicKey')
          if matcherPublicKey:
              return matcherPublicKey
          else:
              response = self.matcherGetMatcher()
              # remove trailing quotes from string response
              self.options['matcherPublicKey'] = response[1:len(response) - 1]
              return self.options['matcherPublicKey']
  
      def get_asset_bytes(self, currencyId):
          if currencyId == 'WAVES':
              return self.number_to_be(0, 1)
          else:
              return self.binary_concat(self.number_to_be(1, 1), self.base58_to_binary(currencyId))
  
      def get_asset_id(self, currencyId):
          if currencyId == 'WAVES':
              return ''
          return currencyId
  
      def price_to_precision(self, symbol, price):
          market = self.markets[symbol]
          wavesPrecision = self.safe_integer(self.options, 'wavesPrecision', 8)
          difference = market['precision']['amount'] - market['precision']['price']
          return int(float(self.to_precision(price, wavesPrecision - difference)))
  
      def amount_to_precision(self, symbol, amount):
          return int(float(self.to_precision(amount, self.markets[symbol]['precision']['amount'])))
  
      def currency_to_precision(self, code, amount, networkCode=None):
          return int(float(self.to_precision(amount, self.currencies[code]['precision'])))
  
      def from_precision(self, amount, scale):
          if amount is None:
              return None
          precise = Precise(amount)
          precise.decimals = precise.decimals + scale
          precise.reduce()
          return str(precise)
  
      def to_precision(self, amount, scale):
          amountString = str(amount)
          precise = Precise(amountString)
          precise.decimals = precise.decimals - scale
          precise.reduce()
          return str(precise)
  
      def currency_from_precision(self, currency, amount):
          scale = self.currencies[currency]['precision']
          return self.from_precision(amount, scale)
  
      def price_from_precision(self, symbol, price):
          market = self.markets[symbol]
          wavesPrecision = self.safe_integer(self.options, 'wavesPrecision', 8)
          scale = wavesPrecision - market['precision']['amount'] + market['precision']['price']
          return self.from_precision(price, scale)
  
      def safe_get_dynamic(self, settings):
          orderFee = self.safe_value(settings, 'orderFee')
          if 'dynamic' in orderFee:
              return self.safe_value(orderFee, 'dynamic')
          else:
              return self.safe_value(orderFee['composite']['default'], 'dynamic')
  
      def safe_get_rates(self, dynamic):
          rates = self.safe_value(dynamic, 'rates')
          if rates is None:
              return {'WAVES': 1}
          return rates
  
      def create_order(self, symbol, type, side, amount, price=None, params={}):
          """
          create a trade order
          :param str symbol: unified symbol of the market to create an order in
          :param str type: 'market' or 'limit'
          :param str side: 'buy' or 'sell'
          :param float amount: how much of currency you want to trade in units of base currency
          :param float price: the price at which the order is to be fullfilled, in units of the quote currency, ignored in market orders
          :param dict params: extra parameters specific to the wavesexchange api endpoint
          :returns dict: an `order structure <https://docs.ccxt.com/en/latest/manual.html#order-structure>`
          """
          self.check_required_dependencies()
          self.check_required_keys()
          self.load_markets()
          market = self.market(symbol)
          matcherPublicKey = self.get_matcher_public_key()
          amountAsset = self.get_asset_id(market['baseId'])
          priceAsset = self.get_asset_id(market['quoteId'])
          isMarketOrder = (type == 'market')
          if (isMarketOrder) and (price is None):
              raise InvalidOrder(self.id + ' createOrder() requires a price argument for ' + type + ' orders to determine the max price for buy and the min price for sell')
          orderType = 0 if (side == 'buy') else 1
          timestamp = self.milliseconds()
          defaultExpiryDelta = self.safe_integer(self.options, 'createOrderDefaultExpiry', 2419200000)
          expiration = self.sum(timestamp, defaultExpiryDelta)
          matcherFees = self.get_fees_for_asset(symbol, side, amount, price)
          # {
          #     "base":{
          #        "feeAssetId":"WAVES",  # varies depending on the trading pair
          #        "matcherFee":"1000000"
          #     },
          #     "discount":{
          #        "feeAssetId":"EMAMLxDnv3xiz8RXg8Btj33jcEw3wLczL3JKYYmuubpc",
          #        "matcherFee":"4077612"
          #     }
          #  }
          base = self.safe_value(matcherFees, 'base')
          baseFeeAssetId = self.safe_string(base, 'feeAssetId')
          baseFeeAsset = self.safe_currency_code(baseFeeAssetId)
          baseMatcherFee = self.safe_string(base, 'matcherFee')
          discount = self.safe_value(matcherFees, 'discount')
          discountFeeAssetId = self.safe_string(discount, 'feeAssetId')
          discountFeeAsset = self.safe_currency_code(discountFeeAssetId)
          discountMatcherFee = self.safe_string(discount, 'matcherFee')
          matcherFeeAssetId = None
          matcherFee = None
          # check first if user supplied asset fee is valid
          if ('feeAsset' in params) or ('feeAsset' in self.options):
              feeAsset = self.safe_string(params, 'feeAsset', self.safe_string(self.options, 'feeAsset'))
              feeCurrency = self.currency(feeAsset)
              matcherFeeAssetId = self.safe_string(feeCurrency, 'id')
          balances = self.fetch_balance()
          if matcherFeeAssetId is not None:
              if baseFeeAssetId != matcherFeeAssetId and discountFeeAssetId != matcherFeeAssetId:
                  raise InvalidOrder(self.id + ' asset fee must be ' + baseFeeAsset + ' or ' + discountFeeAsset)
              matcherFeeAsset = self.safe_currency_code(matcherFeeAssetId)
              rawMatcherFee = baseMatcherFee if (matcherFeeAssetId == baseFeeAssetId) else discountMatcherFee
              floatMatcherFee = float(self.currency_from_precision(matcherFeeAsset, rawMatcherFee))
              if (matcherFeeAsset in balances) and (balances[matcherFeeAsset]['free'] >= floatMatcherFee):
                  matcherFee = int(rawMatcherFee)
              else:
                  raise InsufficientFunds(self.id + ' not enough funds of the selected asset fee')
          if matcherFeeAssetId is None:
              # try to the pay the fee using the base first then discount asset
              floatBaseMatcherFee = float(self.currency_from_precision(baseFeeAsset, baseMatcherFee))
              if (baseFeeAsset in balances) and (balances[baseFeeAsset]['free'] >= floatBaseMatcherFee):
                  matcherFeeAssetId = baseFeeAssetId
                  matcherFee = int(baseMatcherFee)
              else:
                  floatDiscountMatcherFee = float(self.currency_from_precision(discountFeeAsset, discountMatcherFee))
                  if (discountFeeAsset in balances) and (balances[discountFeeAsset]['free'] >= floatDiscountMatcherFee):
                      matcherFeeAssetId = discountFeeAssetId
                      matcherFee = int(discountMatcherFee)
          if matcherFeeAssetId is None:
              raise InsufficientFunds(self.id + ' not enough funds on none of the eligible asset fees')
          amount = self.amount_to_precision(symbol, amount)
          price = self.price_to_precision(symbol, price)
          byteArray = [
              self.number_to_be(3, 1),
              self.base58_to_binary(self.apiKey),
              self.base58_to_binary(matcherPublicKey),
              self.get_asset_bytes(market['baseId']),
              self.get_asset_bytes(market['quoteId']),
              self.number_to_be(orderType, 1),
              self.number_to_be(price, 8),
              self.number_to_be(amount, 8),
              self.number_to_be(timestamp, 8),
              self.number_to_be(expiration, 8),
              self.number_to_be(matcherFee, 8),
              self.get_asset_bytes(matcherFeeAssetId),
          ]
          binary = self.binary_concat_array(byteArray)
          signature = self.eddsa(self.binary_to_base16(binary), self.binary_to_base16(self.base58_to_binary(self.secret)), 'ed25519')
          assetPair = {
              'amountAsset': amountAsset,
              'priceAsset': priceAsset,
          }
          body = {
              'senderPublicKey': self.apiKey,
              'matcherPublicKey': matcherPublicKey,
              'assetPair': assetPair,
              'orderType': side,
              'price': price,
              'amount': amount,
              'timestamp': timestamp,
              'expiration': expiration,
              'matcherFee': int(matcherFee),
              'signature': signature,
              'version': 3,
          }
          if matcherFeeAssetId != 'WAVES':
              body['matcherFeeAssetId'] = matcherFeeAssetId
          #
          #     {
          #         "success":true,
          #         "message":{
          #             "version":3,
          #             "id":"GK5ox4RfLJFtqjQsCbDmvCya8ZhFVEUQDtF4yYuAJ6C7",
          #             "sender":"3P8VzLSa23EW5CVckHbV7d5BoN75fF1hhFH",
          #             "senderPublicKey":"AHXn8nBA4SfLQF7hLQiSn16kxyehjizBGW1TdrmSZ1gF",
          #             "matcherPublicKey":"9cpfKN9suPNvfeUNphzxXMjcnn974eme8ZhWUjaktzU5",
          #             "assetPair":{
          #                 "amountAsset":"C1iWsKGqLwjHUndiQ7iXpdmPum9PeCDFfyXBdJJosDRS",
          #                 "priceAsset":"WAVES"
          #             },
          #             "orderType":"buy",
          #             "amount":110874978,
          #             "price":514397851,
          #             "timestamp":1650473255988,
          #             "expiration":1652892455988,
          #             "matcherFee":7074571,
          #             "matcherFeeAssetId":"Atqv59EYzjFGuitKVnMRk6H8FukjoV3ktPorbEys25on",
          #             "signature":"5Vgs6mbdZJv5Ce9mdobT6fppXr6bKn5WVDbzP6mGG5jMB5jgcA2eSScwctgvY5SwPm9n1bctAAKuXtLcdHjNNie8",
          #             "proofs":["5Vgs6mbdZJv5Ce9mdobT6fppXr6bKn5WVDbzP6mGG5jMB5jgcA2eSScwctgvY5SwPm9n1bctAAKuXtLcdHjNNie8"]
          #         },
          #         "status":"OrderAccepted"
          #     }
          #
          if isMarketOrder:
              response = self.matcherPostMatcherOrderbookMarket(body)
              value = self.safe_value(response, 'message')
              return self.parse_order(value, market)
          else:
              response = self.matcherPostMatcherOrderbook(body)
              value = self.safe_value(response, 'message')
              return self.parse_order(value, market)
  
      def cancel_order(self, id, symbol=None, params={}):
          """
          cancels an open order
          :param str id: order id
          :param str|None symbol: unified symbol of the market the order was made in
          :param dict params: extra parameters specific to the wavesexchange api endpoint
          :returns dict: An `order structure <https://docs.ccxt.com/en/latest/manual.html#order-structure>`
          """
          self.check_required_dependencies()
          self.check_required_keys()
          self.sign_in()
          wavesAddress = self.get_waves_address()
          response = self.forwardPostMatcherOrdersWavesAddressCancel({
              'wavesAddress': wavesAddress,
              'orderId': id,
          })
          #  {
          #    "success":true,
          #    "message":[[{"orderId":"EBpJeGM36KKFz5gTJAUKDBm89V8wqxKipSFBdU35AN3c","success":true,"status":"OrderCanceled"}]],
          #    "status":"BatchCancelCompleted"
          #  }
          message = self.safe_value(response, 'message')
          firstMessage = self.safe_value(message, 0)
          firstOrder = self.safe_value(firstMessage, 0)
          returnedId = self.safe_string(firstOrder, 'orderId')
          return {
              'info': response,
              'id': returnedId,
              'clientOrderId': None,
              'timestamp': None,
              'datetime': None,
              'lastTradeTimestamp': None,
              'symbol': symbol,
              'type': None,
              'side': None,
              'price': None,
              'amount': None,
              'cost': None,
              'average': None,
              'filled': None,
              'remaining': None,
              'status': None,
              'fee': None,
              'trades': None,
          }
  
      def fetch_order(self, id, symbol=None, params={}):
          """
          fetches information on an order made by the user
          :param str|None symbol: unified symbol of the market the order was made in
          :param dict params: extra parameters specific to the wavesexchange api endpoint
          :returns dict: An `order structure <https://docs.ccxt.com/en/latest/manual.html#order-structure>`
          """
          self.check_required_dependencies()
          self.check_required_keys()
          self.load_markets()
          market = None
          if symbol is not None:
              market = self.market(symbol)
          timestamp = self.milliseconds()
          byteArray = [
              self.base58_to_binary(self.apiKey),
              self.number_to_be(timestamp, 8),
          ]
          binary = self.binary_concat_array(byteArray)
          hexSecret = self.binary_to_base16(self.base58_to_binary(self.secret))
          signature = self.eddsa(self.binary_to_base16(binary), hexSecret, 'ed25519')
          request = {
              'Timestamp': str(timestamp),
              'Signature': signature,
              'publicKey': self.apiKey,
              'orderId': id,
          }
          response = self.matcherGetMatcherOrderbookPublicKeyOrderId(self.extend(request, params))
          return self.parse_order(response, market)
  
      def fetch_orders(self, symbol=None, since=None, limit=None, params={}):
          self.check_required_dependencies()
          self.check_required_keys()
          if symbol is None:
              raise ArgumentsRequired(self.id + ' fetchOrders() requires symbol argument')
          self.load_markets()
          market = self.market(symbol)
          timestamp = self.milliseconds()
          byteArray = [
              self.base58_to_binary(self.apiKey),
              self.number_to_be(timestamp, 8),
          ]
          binary = self.binary_concat_array(byteArray)
          hexSecret = self.binary_to_base16(self.base58_to_binary(self.secret))
          signature = self.eddsa(self.binary_to_base16(binary), hexSecret, 'ed25519')
          request = {
              'Accept': 'application/json',
              'Timestamp': str(timestamp),
              'Signature': signature,
              'publicKey': self.apiKey,
              'baseId': market['baseId'],
              'quoteId': market['quoteId'],
          }
          response = self.matcherGetMatcherOrderbookBaseIdQuoteIdPublicKeyPublicKey(self.extend(request, params))
          # [{id: '3KicDeWayY2mdrRoYdCkP3gUAoUZUNT1AA6GAtWuPLfa',
          #     type: 'sell',
          #     orderType: 'limit',
          #     amount: 1,
          #     fee: 300000,
          #     price: 100000000,
          #     timestamp: 1591651254076,
          #     filled: 0,
          #     filledFee: 0,
          #     feeAsset: 'WAVES',
          #     status: 'Accepted',
          #     assetPair:
          #      {amountAsset: null,
          #        priceAsset: '8LQW8f7P5d5PZM7GtZEBgaqRPGSzS3DfPuiXrURJ4AJS'},
          #     avgWeighedPrice: 0}, ...]
          return self.parse_orders(response, market, since, limit)
  
      def fetch_open_orders(self, symbol=None, since=None, limit=None, params={}):
          self.load_markets()
          self.sign_in()
          market = None
          if symbol is not None:
              market = self.market(symbol)
          address = self.get_waves_address()
          request = {
              'address': address,
              'activeOnly': True,
          }
          response = self.forwardGetMatcherOrdersAddress(request)
          return self.parse_orders(response, market, since, limit)
  
      def fetch_closed_orders(self, symbol=None, since=None, limit=None, params={}):
          self.load_markets()
          self.sign_in()
          market = None
          if symbol is not None:
              market = self.market(symbol)
          address = self.get_waves_address()
          request = {
              'address': address,
              'closedOnly': True,
          }
          response = self.forwardGetMatcherOrdersAddress(request)
          # [
          #   {
          #     "id": "9aXcxvXai73jbAm7tQNnqaQ2PwUjdmWuyjvRTKAHsw4f",
          #     "type": "buy",
          #     "orderType": "limit",
          #     "amount": 23738330,
          #     "fee": 300000,
          #     "price": 3828348334,
          #     "timestamp": 1591926905636,
          #     "filled": 23738330,
          #     "filledFee": 300000,
          #     "feeAsset": "WAVES",
          #     "status": "Filled",
          #     "assetPair": {
          #       "amountAsset": "HZk1mbfuJpmxU1Fs4AX5MWLVYtctsNcg6e2C6VKqK8zk",
          #       "priceAsset": null
          #     },
          #     "avgWeighedPrice": 3828348334
          #   }, ...
          # ]
          return self.parse_orders(response, market, since, limit)
  
      def parse_order_status(self, status):
          statuses = {
              'Cancelled': 'canceled',
              'Accepted': 'open',
              'Filled': 'closed',
              'PartiallyFilled': 'open',
          }
          return self.safe_string(statuses, status, status)
  
      def get_symbol_from_asset_pair(self, assetPair):
          # a blank string or null can indicate WAVES
          baseId = self.safe_string(assetPair, 'amountAsset', 'WAVES')
          quoteId = self.safe_string(assetPair, 'priceAsset', 'WAVES')
          return self.safe_currency_code(baseId) + '/' + self.safe_currency_code(quoteId)
  
      def parse_order(self, order, market=None):
          #
          # createOrder
          #
          #     {
          #         'version': 3,
          #         'id': 'BshyeHXDfJmTnjTdBYt371jD4yWaT3JTP6KpjpsiZepS',
          #         'sender': '3P8VzLSa23EW5CVckHbV7d5BoN75fF1hhFH',
          #         'senderPublicKey': 'AHXn8nBA4SfLQF7hLQiSn16kxyehjizBGW1TdrmSZ1gF',
          #         'matcherPublicKey': '9cpfKN9suPNvfeUNphzxXMjcnn974eme8ZhWUjaktzU5',
          #         'assetPair': {
          #             'amountAsset': '474jTeYx2r2Va35794tCScAXWJG9hU2HcgxzMowaZUnu',
          #             'priceAsset': 'DG2xFkPdDwKUoBkzGAhQtLpSGzfXLiCYPEzeKH2Ad24p',
          #         },
          #         'orderType': 'buy',
          #         'amount': 10000,
          #         'price': 400000000,
          #         'timestamp': 1599848586891,
          #         'expiration': 1602267786891,
          #         'matcherFee': 3008,
          #         'matcherFeeAssetId': '474jTeYx2r2Va35794tCScAXWJG9hU2HcgxzMowaZUnu',
          #         'signature': '3D2h8ubrhuWkXbVn4qJ3dvjmZQxLoRNfjTqb9uNpnLxUuwm4fGW2qGH6yKFe2SQPrcbgkS3bDVe7SNtMuatEJ7qy',
          #         'proofs': [
          #             '3D2h8ubrhuWkXbVn4qJ3dvjmZQxLoRNfjTqb9uNpnLxUuwm4fGW2qGH6yKFe2SQPrcbgkS3bDVe7SNtMuatEJ7qy',
          #         ],
          #     }
          #
          #
          # fetchOrder, fetchOrders, fetchOpenOrders, fetchClosedOrders
          #
          #     {
          #         id: '81D9uKk2NfmZzfG7uaJsDtxqWFbJXZmjYvrL88h15fk8',
          #         type: 'buy',
          #         orderType: 'limit',
          #         amount: 30000000000,
          #         filled: 0,
          #         price: 1000000,
          #         fee: 300000,
          #         filledFee: 0,
          #         feeAsset: 'WAVES',
          #         timestamp: 1594303779322,
          #         status: 'Cancelled',
          #         assetPair: {
          #             amountAsset: '474jTeYx2r2Va35794tCScAXWJG9hU2HcgxzMowaZUnu',
          #             priceAsset: 'WAVES'
          #         },
          #         avgWeighedPrice: 0,
          #         version: 3,
          #         totalExecutedPriceAssets: 0,  # in fetchOpenOrder/s
          #     }
          #
          timestamp = self.safe_integer(order, 'timestamp')
          side = self.safe_string_2(order, 'type', 'orderType')
          type = 'limit'
          if 'type' in order:
              # fetchOrders
              type = self.safe_string(order, 'orderType', type)
          id = self.safe_string(order, 'id')
          filledString = self.safe_string(order, 'filled')
          priceString = self.safe_string(order, 'price')
          amountString = self.safe_string(order, 'amount')
          assetPair = self.safe_value(order, 'assetPair')
          symbol = None
          if assetPair is not None:
              symbol = self.get_symbol_from_asset_pair(assetPair)
          elif market is not None:
              symbol = market['symbol']
          amountCurrency = self.safe_currency_code(self.safe_string(assetPair, 'amountAsset', 'WAVES'))
          price = self.price_from_precision(symbol, priceString)
          amount = self.currency_from_precision(amountCurrency, amountString)
          filled = self.currency_from_precision(amountCurrency, filledString)
          average = self.price_from_precision(symbol, self.safe_string(order, 'avgWeighedPrice'))
          status = self.parse_order_status(self.safe_string(order, 'status'))
          fee = None
          if 'type' in order:
              currency = self.safe_currency_code(self.safe_string(order, 'feeAsset'))
              fee = {
                  'currency': currency,
                  'fee': self.parse_number(self.currency_from_precision(currency, self.safe_string(order, 'filledFee'))),
              }
          else:
              currency = self.safe_currency_code(self.safe_string(order, 'matcherFeeAssetId', 'WAVES'))
              fee = {
                  'currency': currency,
                  'fee': self.parse_number(self.currency_from_precision(currency, self.safe_string(order, 'matcherFee'))),
              }
          return self.safe_order({
              'info': order,
              'id': id,
              'clientOrderId': None,
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'lastTradeTimestamp': None,
              'symbol': symbol,
              'type': type,
              'timeInForce': None,
              'postOnly': None,
              'side': side,
              'price': price,
              'stopPrice': None,
              'amount': amount,
              'cost': None,
              'average': average,
              'filled': filled,
              'remaining': None,
              'status': status,
              'fee': fee,
              'trades': None,
          }, market)
  
      def get_waves_address(self):
          cachedAddreess = self.safe_string(self.options, 'wavesAddress')
          if cachedAddreess is None:
              request = {
                  'publicKey': self.apiKey,
              }
              response = self.nodeGetAddressesPublicKeyPublicKey(request)
              self.options['wavesAddress'] = self.safe_string(response, 'address')
              return self.options['wavesAddress']
          else:
              return cachedAddreess
  
      def fetch_balance(self, params={}):
          """
          query for balance and get the amount of funds available for trading or funds locked in orders
          :param dict params: extra parameters specific to the wavesexchange api endpoint
          :returns dict: a `balance structure <https://docs.ccxt.com/en/latest/manual.html?#balance-structure>`
          """
          # makes a lot of different requests to get all the data
          # in particular:
          # fetchMarkets, getWavesAddress,
          # getTotalBalance(doesn't include waves), getReservedBalance(doesn't include waves)
          # getReservedBalance(includes WAVES)
          # I couldn't find another way to get all the data
          self.check_required_dependencies()
          self.check_required_keys()
          self.load_markets()
          wavesAddress = self.get_waves_address()
          request = {
              'address': wavesAddress,
          }
          totalBalance = self.nodeGetAssetsBalanceAddress(request)
          # {
          #   "address": "3P8VzLSa23EW5CVckHbV7d5BoN75fF1hhFH",
          #   "balances": [
          #     {
          #       "assetId": "DG2xFkPdDwKUoBkzGAhQtLpSGzfXLiCYPEzeKH2Ad24p",
          #       "balance": 1177200,
          #       "reissuable": False,
          #       "minSponsoredAssetFee": 7420,
          #       "sponsorBalance": 47492147189709,
          #       "quantity": 999999999775381400,
          #       "issueTransaction": {
          #         "senderPublicKey": "BRnVwSVctnV8pge5vRpsJdWnkjWEJspFb6QvrmZvu3Ht",
          #         "quantity": 1000000000000000000,
          #         "fee": 100400000,
          #         "description": "Neutrino USD",
          #         "type": 3,
          #         "version": 2,
          #         "reissuable": False,
          #         "script": null,
          #         "sender": "3PC9BfRwJWWiw9AREE2B3eWzCks3CYtg4yo",
          #         "feeAssetId": null,
          #         "chainId": 87,
          #         "proofs": [
          #           "3HNpbVkgP69NWSeb9hGYauiQDaXrRXh3tXFzNsGwsAAXnFrA29SYGbLtziW9JLpXEq7qW1uytv5Fnm5XTUMB2BxU"
          #         ],
          #         "assetId": "DG2xFkPdDwKUoBkzGAhQtLpSGzfXLiCYPEzeKH2Ad24p",
          #         "decimals": 6,
          #         "name": "USD-N",
          #         "id": "DG2xFkPdDwKUoBkzGAhQtLpSGzfXLiCYPEzeKH2Ad24p",
          #         "timestamp": 1574429393962
          #       }
          #     }
          #   ]
          # }
          balances = self.safe_value(totalBalance, 'balances', [])
          result = {}
          timestamp = None
          assetIds = []
          nonStandardBalances = []
          for i in range(0, len(balances)):
              entry = balances[i]
              entryTimestamp = self.safe_integer(entry, 'timestamp')
              timestamp = entryTimestamp if (timestamp is None) else max(timestamp, entryTimestamp)
              issueTransaction = self.safe_value(entry, 'issueTransaction')
              currencyId = self.safe_string(entry, 'assetId')
              balance = self.safe_string(entry, 'balance')
              if issueTransaction is None:
                  assetIds.append(currencyId)
                  nonStandardBalances.append(balance)
                  continue
              decimals = self.safe_integer(issueTransaction, 'decimals')
              code = None
              if currencyId in self.currencies_by_id:
                  code = self.safe_currency_code(currencyId)
                  result[code] = self.account()
                  result[code]['total'] = self.from_precision(balance, decimals)
          nonStandardAssets = len(assetIds)
          if nonStandardAssets:
              request = {
                  'ids': assetIds,
              }
              response = self.publicGetAssets(request)
              data = self.safe_value(response, 'data', [])
              for i in range(0, len(data)):
                  entry = data[i]
                  balance = nonStandardBalances[i]
                  inner = self.safe_value(entry, 'data')
                  decimals = self.safe_integer(inner, 'precision')
                  ticker = self.safe_string(inner, 'ticker')
                  code = self.safe_currency_code(ticker)
                  result[code] = self.account()
                  result[code]['total'] = self.from_precision(balance, decimals)
          currentTimestamp = self.milliseconds()
          byteArray = [
              self.base58_to_binary(self.apiKey),
              self.number_to_be(currentTimestamp, 8),
          ]
          binary = self.binary_concat_array(byteArray)
          hexSecret = self.binary_to_base16(self.base58_to_binary(self.secret))
          signature = self.eddsa(self.binary_to_base16(binary), hexSecret, 'ed25519')
          matcherRequest = {
              'publicKey': self.apiKey,
              'signature': signature,
              'timestamp': str(currentTimestamp),
          }
          reservedBalance = self.matcherGetMatcherBalanceReservedPublicKey(matcherRequest)
          # {WAVES: 200300000}
          reservedKeys = list(reservedBalance.keys())
          for i in range(0, len(reservedKeys)):
              currencyId = reservedKeys[i]
              code = self.safe_currency_code(currencyId)
              if not (code in result):
                  result[code] = self.account()
              amount = self.safe_string(reservedBalance, currencyId)
              if code in self.currencies:
                  result[code]['used'] = self.currency_from_precision(code, amount)
              else:
                  result[code]['used'] = amount
          wavesRequest = {
              'address': wavesAddress,
          }
          wavesTotal = self.nodeGetAddressesBalanceAddress(wavesRequest)
          # {
          #   "address": "3P8VzLSa23EW5CVckHbV7d5BoN75fF1hhFH",
          #   "confirmations": 0,
          #   "balance": 909085978
          # }
          result['WAVES'] = self.safe_value(result, 'WAVES', {})
          result['WAVES']['total'] = self.currency_from_precision('WAVES', self.safe_string(wavesTotal, 'balance'))
          codes = list(result.keys())
          for i in range(0, len(codes)):
              code = codes[i]
              if self.safe_value(result[code], 'used') is None:
                  result[code]['used'] = '0'
          result['timestamp'] = timestamp
          result['datetime'] = self.iso8601(timestamp)
          return self.safe_balance(result)
  
      def fetch_my_trades(self, symbol=None, since=None, limit=None, params={}):
          self.load_markets()
          market = self.market(symbol)
          address = self.get_waves_address()
          request = {
              'sender': address,
              'amountAsset': market['baseId'],
              'priceAsset': market['quoteId'],
          }
          response = self.publicGetTransactionsExchange(request)
          data = self.safe_value(response, 'data')
          #
          #      {
          #          "__type":"list",
          #          "isLastPage":true,
          #          "lastCursor":"MzA2MjQ0MzAwMDI5OjpkZXNj",
          #          "data": [
          #              {
          #                  "__type":"transaction",
          #                  "data": {
          #                      "id":"GbjPqco2wRP5QSrY5LimFrUyJaM535K9nhK5zaQ7J7Tx",
          #                      "timestamp":"2022-04-06T19:56:31.479Z",
          #                      "height":3062443,
          #                      "type":7,
          #                      "version":2,
          #                      "proofs":[
          #                          "57mYrANw61eiArCTv2eYwzXm71jYC2KpZ5AeM9zHEstuRaYSAWSuSE7njAJYJu8zap6DMCm3nzqc6es3wQFDpRCN"
          #                      ],
          #                      "fee":0.003,
          #                      "applicationStatus":"succeeded",
          #                      "sender":"3PEjHv3JGjcWNpYEEkif2w8NXV4kbhnoGgu",
          #                      "senderPublicKey":"9cpfKN9suPNvfeUNphzxXMjcnn974eme8ZhWUjaktzU5",
          #                      "buyMatcherFee":0,
          #                      "sellMatcherFee":0.00141728,
          #                      "price":215.7431,
          #                      "amount":0.09,
          #                      "order1": {
          #                          "id":"49qiuQj5frdZ6zpTCEpMuKPMAh1EimwXpXWB4BeCw33h",
          #                          "senderPublicKey":"CjUfoH3dsDZsf5UuAjqqzpWHXgvKzBZpVG9YixF7L48K",
          #                          "matcherPublicKey":"9cpfKN9suPNvfeUNphzxXMjcnn974eme8ZhWUjaktzU5",
          #                          "assetPair": {
          #                              "amountAsset":"7TMu26hAs7B2oW6c5sfx45KSZT7GQA3TZNYuCav8Dcqt",
          #                              "priceAsset":"DG2xFkPdDwKUoBkzGAhQtLpSGzfXLiCYPEzeKH2Ad24p"
          #                          },
          #                          "orderType":"buy",
          #                          "price":215.7431,
          #                          "sender":"3PR9WmaHV5ueVw2Wr9xsiCG3t4ySXzkkGLy",
          #                          "amount":0.36265477,
          #                          "timestamp":"2022-04-06T19:55:06.832Z",
          #                          "expiration":"2022-05-05T19:55:06.832Z",
          #                          "matcherFee":3.000334,
          #                          "signature":"2rBWhdeuRJNpQfXfTFtcR8x8Lpic8FUHPdLML9uxABRUuxe48YRJcZxbncwWAh9LWFCEUZiztv7RZBZfGMWfFxTs",
          #                          "matcherFeeAssetId":"DG2xFkPdDwKUoBkzGAhQtLpSGzfXLiCYPEzeKH2Ad24p"
          #                      },
          #                      "order2": {
          #                          "id":"AkxiJqCuv6wm8K41TUSgFNwShZMnCbMDT78MqrcWpQ53",
          #                          "senderPublicKey":"72o7qNKyne5hthB1Ww6famE7uHrk5vTVB2ZfUMBEqL3Y",
          #                          "matcherPublicKey":"9cpfKN9suPNvfeUNphzxXMjcnn974eme8ZhWUjaktzU5",
          #                          "assetPair": {
          #                              "amountAsset":"7TMu26hAs7B2oW6c5sfx45KSZT7GQA3TZNYuCav8Dcqt",
          #                              "priceAsset":"DG2xFkPdDwKUoBkzGAhQtLpSGzfXLiCYPEzeKH2Ad24p"
          #                          },
          #                          "orderType":"sell",
          #                          "price":210,
          #                          "sender":"3P3CzbjGgiqEyUBeKZYfgZtyaZfMG8fjoUD",
          #                          "amount":0.09,
          #                          "timestamp":"2022-04-06T19:56:18.535Z",
          #                          "expiration":"2022-05-04T19:56:18.535Z",
          #                          "matcherFee":0.00141728,
          #                          "signature":"5BZCjYn6QzVkMXBFDBnzcAUBdCZqhq9hQfRXFHfLUQCsbis4zeriw4sUqLa1BZRT2isC6iY4Z4HtekikPqZ461PT",
          #                          "matcherFeeAssetId":"7TMu26hAs7B2oW6c5sfx45KSZT7GQA3TZNYuCav8Dcqt"
          #                      }
          #                  }
          #              },...
          #          ]
          #      }
          #
          return self.parse_trades(data, market, since, limit)
  
      def fetch_trades(self, symbol, since=None, limit=None, params={}):
          """
          get the list of most recent trades for a particular symbol
          :param str symbol: unified symbol of the market to fetch trades for
          :param int|None since: timestamp in ms of the earliest trade to fetch
          :param int|None limit: the maximum amount of trades to fetch
          :param dict params: extra parameters specific to the wavesexchange api endpoint
          :returns [dict]: a list of `trade structures <https://docs.ccxt.com/en/latest/manual.html?#public-trades>`
          """
          self.load_markets()
          market = self.market(symbol)
          request = {
              'amountAsset': market['baseId'],
              'priceAsset': market['quoteId'],
          }
          if limit is not None:
              request['limit'] = limit
          if since is not None:
              request['timeStart'] = since
          response = self.publicGetTransactionsExchange(request)
          data = self.safe_value(response, 'data')
          #
          #      {
          #          "__type":"list",
          #          "isLastPage":false,
          #          "lastCursor":"MzA2MjM2MTAwMDU0OjpkZXNj",
          #          "data": [
          #              {
          #                  "__type":"transaction",
          #                  "data": {
          #                      "id":"F42WsvSsyEzvpPLFjVhQKkSNuopooP4zMkjSUs47NeML",
          #                      "timestamp":"2022-04-06T18:39:49.145Z",
          #                      "height":3062361,
          #                      "type":7,
          #                      "version":2,
          #                      "proofs": [
          #                          "39iJv82kFi4pyuBxYeZpP45NXXjbrCXdVsHPAAvj32UMLmTXLjMTfV43PcmZDSAuS93HKSDo1aKJrin8UvkeE9Bs"
          #                      ],
          #                      "fee":0.003,
          #                      "applicationStatus":"succeeded",
          #                      "sender":"3PEjHv3JGjcWNpYEEkif2w8NXV4kbhnoGgu",
          #                      "senderPublicKey":"9cpfKN9suPNvfeUNphzxXMjcnn974eme8ZhWUjaktzU5",
          #                      "buyMatcherFee":0.02314421,
          #                      "sellMatcherFee":0,
          #                      "price":217.3893,
          #                      "amount":0.34523025,
          #                      "order1": {
          #                          "id":"HkM36PHGaeeZdDKT1mYgZXhaU9PRZ54RZiJc2K4YMT3Q",
          #                          "senderPublicKey":"7wYCaDcc6GX1Jx2uS7QgLHBypBKvrezTS1HfiW6Xe4Bk",
          #                          "matcherPublicKey":"9cpfKN9suPNvfeUNphzxXMjcnn974eme8ZhWUjaktzU5",
          #                          "assetPair": {
          #                              "amountAsset":"7TMu26hAs7B2oW6c5sfx45KSZT7GQA3TZNYuCav8Dcqt",
          #                              "priceAsset":"DG2xFkPdDwKUoBkzGAhQtLpSGzfXLiCYPEzeKH2Ad24p"
          #                          },
          #                          "orderType":"buy",
          #                          "price":225.2693,
          #                          "sender":"3PLPc8f4DGYaF9C9bwJ2uVmHqRv3NCjg5VQ",
          #                          "amount":2.529,
          #                          "timestamp":"2022-04-06T18:39:48.796Z",
          #                          "expiration":"2022-05-05T18:39:48.796Z",
          #                          "matcherFee":0.17584444,
          #                          "signature":"2yQfJoomv86evQDw36fg1uiRkHvPDZtRp3qvxqTBWPvz4JLTHGQtEHJF5NGTvym6U93CtgNprngzmD9ecHBjxf6U",
          #                          "matcherFeeAssetId":"Atqv59EYzjFGuitKVnMRk6H8FukjoV3ktPorbEys25on"
          #                      },
          #                      "order2": {
          #                          "id":"F7HKmeuzwWdk3wKitHLnVx5MuD4wBWPpphQ8kUGx4tT9",
          #                          "senderPublicKey":"CjUfoH3dsDZsf5UuAjqqzpWHXgvKzBZpVG9YixF7L48K",
          #                          "matcherPublicKey":"9cpfKN9suPNvfeUNphzxXMjcnn974eme8ZhWUjaktzU5",
          #                          "assetPair": {
          #                              "amountAsset":"7TMu26hAs7B2oW6c5sfx45KSZT7GQA3TZNYuCav8Dcqt",
          #                              "priceAsset":"DG2xFkPdDwKUoBkzGAhQtLpSGzfXLiCYPEzeKH2Ad24p"
          #                          },
          #                          "orderType":"sell",
          #                          "price":217.3893,
          #                          "sender":"3PR9WmaHV5ueVw2Wr9xsiCG3t4ySXzkkGLy",
          #                          "amount":0.35767793,
          #                          "timestamp":"2022-04-06T18:32:01.390Z",
          #                          "expiration":"2022-05-05T18:32:01.390Z",
          #                          "matcherFee":0.0139168,
          #                          "signature":"34HgWVLPgeYWkiSvAc5ChVepGTYDQDug2dMTSincs6idEyoM7AtaZuH3mqQ5RJG2fcxxH2QSB723Qq3dgLQwQmKf",
          #                          "matcherFeeAssetId":"7TMu26hAs7B2oW6c5sfx45KSZT7GQA3TZNYuCav8Dcqt"
          #                      }
          #                  }
          #              }, ...
          #          ]
          #      }
          #
          return self.parse_trades(data, market, since, limit)
  
      def parse_trade(self, trade, market=None):
          #
          # {__type: 'transaction',
          #   data:
          #    {id: 'HSdruioHqvYHeyn9hhyoHdRWPB2bFA8ujeCPZMK6992c',
          #      timestamp: '2020-06-09T19:34:51.897Z',
          #      height: 2099684,
          #      type: 7,
          #      version: 2,
          #      proofs:
          #       ['26teDHERQgwjjHqEn4REcDotNG8M21xjou3X42XuDuCvrRkQo6aPyrswByH3UrkWG8v27ZAaVNzoxDg4teNcLtde'],
          #      fee: 0.003,
          #      sender: '3PEjHv3JGjcWNpYEEkif2w8NXV4kbhnoGgu',
          #      senderPublicKey: '9cpfKN9suPNvfeUNphzxXMjcnn974eme8ZhWUjaktzU5',
          #      buyMatcherFee: 0.00299999,
          #      sellMatcherFee: 0.00299999,
          #      price: 0.00012003,
          #      amount: 60.80421562,
          #      order1:
          #       {id: 'CBRwP3ar4oMvvpUiGyfxc1syh41488SDi2GkrjuBDegv',
          #         senderPublicKey: 'DBXSHBz96NFsMu7xh4fi2eT9ZnyxefAHXsMxUayzgC6a',
          #         matcherPublicKey: '9cpfKN9suPNvfeUNphzxXMjcnn974eme8ZhWUjaktzU5',
          #         assetPair: [Object],
          #         orderType: 'buy',
          #         price: 0.00012003,
          #         sender: '3PJfFRgVuJ47UY4ckb74EGzEBzkHXtmG1LA',
          #         amount: 60.80424773,
          #         timestamp: '2020-06-09T19:34:51.885Z',
          #         expiration: '2020-06-10T12:31:31.885Z',
          #         matcherFee: 0.003,
          #         signature: '4cA3ZAb3XAEEXaFG7caqpto5TRbpR5PkhZpxoNQZ9ZReNvjuJQs5a3THnumv7rcqmVUiVtuHAgk2f67ANcqtKyJ8',
          #         matcherFeeAssetId: null},
          #      order2:
          #       {id: 'CHJSLQ6dfSPs6gu2mAegrMUcRiDEDqaj2GKfvptMjS3M',
          #         senderPublicKey: '3RUC4NGFZm9H8VJhSSjJyFLdiE42qNiUagDcZPwjgDf8',
          #         matcherPublicKey: '9cpfKN9suPNvfeUNphzxXMjcnn974eme8ZhWUjaktzU5',
          #         assetPair: [Object],
          #         orderType: 'sell',
          #         price: 0.00012003,
          #         sender: '3P9vKoQpMZtaSkHKpNh977YY9ZPzTuntLAq',
          #         amount: 60.80424773,
          #         timestamp: '2020-06-09T19:34:51.887Z',
          #         expiration: '2020-06-10T12:31:31.887Z',
          #         matcherFee: 0.003,
          #         signature: '3SFyrcqzou2ddZyNisnLYaGhLt5qRjKxH8Nw3s4T5U7CEKGX9DDo8dS27RgThPVGbYF1rYET1FwrWoQ2UFZ6SMTR',
          #         matcherFeeAssetId: null}}}
          #
          data = self.safe_value(trade, 'data')
          datetime = self.safe_string(data, 'timestamp')
          timestamp = self.parse8601(datetime)
          id = self.safe_string(data, 'id')
          priceString = self.safe_string(data, 'price')
          amountString = self.safe_string(data, 'amount')
          order1 = self.safe_value(data, 'order1')
          order2 = self.safe_value(data, 'order2')
          order = None
          # order2 arrived after order1
          if self.safe_string(order1, 'senderPublicKey') == self.apiKey:
              order = order1
          else:
              order = order2
          symbol = None
          assetPair = self.safe_value(order, 'assetPair')
          if assetPair is not None:
              symbol = self.get_symbol_from_asset_pair(assetPair)
          elif market is not None:
              symbol = market['symbol']
          side = self.safe_string(order, 'orderType')
          orderId = self.safe_string(order, 'id')
          fee = {
              'cost': self.safe_string(order, 'matcherFee'),
              'currency': self.safe_currency_code(self.safe_string(order, 'matcherFeeAssetId', 'WAVES')),
          }
          return self.safe_trade({
              'info': trade,
              'timestamp': timestamp,
              'datetime': datetime,
              'symbol': symbol,
              'id': id,
              'order': orderId,
              'type': None,
              'side': side,
              'takerOrMaker': None,
              'price': priceString,
              'amount': amountString,
              'cost': None,
              'fee': fee,
          }, market)
  
      def handle_errors(self, code, reason, url, method, headers, body, response, requestHeaders, requestBody):
          errorCode = self.safe_string(response, 'error')
          success = self.safe_value(response, 'success', True)
          Exception = self.safe_value(self.exceptions, errorCode)
          if Exception is not None:
              message = self.safe_string(response, 'message')
              raise Exception(self.id + ' ' + message)
          message = self.safe_string(response, 'message')
          if message == 'Validation Error':
              raise BadRequest(self.id + ' ' + body)
          if not success:
              raise ExchangeError(self.id + ' ' + body)
  
      def withdraw(self, code, amount, address, tag=None, params={}):
          """
          make a withdrawal
          :param str code: unified currency code
          :param float amount: the amount to withdraw
          :param str address: the address to withdraw to
          :param str|None tag:
          :param dict params: extra parameters specific to the wavesexchange api endpoint
          :returns dict: a `transaction structure <https://docs.ccxt.com/en/latest/manual.html#transaction-structure>`
          """
          tag, params = self.handle_withdraw_tag_and_params(tag, params)
          # currently only works for BTC and WAVES
          if code != 'WAVES':
              supportedCurrencies = self.privateGetWithdrawCurrencies()
              currencies = {}
              items = self.safe_value(supportedCurrencies, 'items', [])
              for i in range(0, len(items)):
                  entry = items[i]
                  currencyCode = self.safe_string(entry, 'id')
                  currencies[currencyCode] = True
              if not (code in currencies):
                  codes = list(currencies.keys())
                  raise ExchangeError(self.id + ' withdraw() ' + code + ' not supported. Currency code must be one of ' + str(codes))
          self.load_markets()
          hexChars = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f']
          set = {}
          for i in range(0, len(hexChars)):
              key = hexChars[i]
              set[key] = True
          isErc20 = True
          noPrefix = self.remove0x_prefix(address)
          lower = noPrefix.lower()
          for i in range(0, len(lower)):
              character = lower[i]
              if not (character in set):
                  isErc20 = False
                  break
          self.sign_in()
          proxyAddress = None
          if code == 'WAVES' and not isErc20:
              proxyAddress = address
          else:
              withdrawAddressRequest = {
                  'address': address,
                  'currency': code,
              }
              withdrawAddress = self.privateGetWithdrawAddressesCurrencyAddress(withdrawAddressRequest)
              currency = self.safe_value(withdrawAddress, 'currency')
              allowedAmount = self.safe_value(currency, 'allowed_amount')
              minimum = self.safe_number(allowedAmount, 'min')
              if amount <= minimum:
                  raise BadRequest(self.id + ' ' + code + ' withdraw failed, amount ' + str(amount) + ' must be greater than the minimum allowed amount of ' + str(minimum))
              # {
              #   "type": "withdrawal_addresses",
              #   "currency": {
              #     "type": "withdrawal_currency",
              #     "id": "BTC",
              #     "waves_asset_id": "8LQW8f7P5d5PZM7GtZEBgaqRPGSzS3DfPuiXrURJ4AJS",
              #     "decimals": 8,
              #     "status": "active",
              #     "allowed_amount": {
              #       "min": 0.001,
              #       "max": 20
              #     },
              #     "fees": {
              #       "flat": 0.001,
              #       "rate": 0
              #     }
              #   },
              #   "proxy_addresses": [
              #     "3P3qqmkiLwNHB7x1FeoE8bvkRtULwGpo9ga"
              #   ]
              # }
              proxyAddresses = self.safe_value(withdrawAddress, 'proxy_addresses', [])
              proxyAddress = self.safe_string(proxyAddresses, 0)
          fee = self.safe_integer(self.options, 'withdrawFeeWAVES', 100000)  # 0.001 WAVES
          feeAssetId = 'WAVES'
          type = 4  # transfer
          version = 2
          amountInteger = self.currency_to_precision(code, amount)
          currency = self.currency(code)
          timestamp = self.milliseconds()
          byteArray = [
              self.number_to_be(4, 1),
              self.number_to_be(2, 1),
              self.base58_to_binary(self.apiKey),
              self.get_asset_bytes(currency['id']),
              self.get_asset_bytes(feeAssetId),
              self.number_to_be(timestamp, 8),
              self.number_to_be(amountInteger, 8),
              self.number_to_be(fee, 8),
              self.base58_to_binary(proxyAddress),
              self.number_to_be(0, 2),
          ]
          binary = self.binary_concat_array(byteArray)
          hexSecret = self.binary_to_base16(self.base58_to_binary(self.secret))
          signature = self.eddsa(self.binary_to_base16(binary), hexSecret, 'ed25519')
          request = {
              'senderPublicKey': self.apiKey,
              'amount': amountInteger,
              'fee': fee,
              'type': type,
              'version': version,
              'attachment': '',
              'feeAssetId': self.get_asset_id(feeAssetId),
              'proofs': [
                  signature,
              ],
              'assetId': self.get_asset_id(currency['id']),
              'recipient': proxyAddress,
              'timestamp': timestamp,
              'signature': signature,
          }
          result = self.nodePostTransactionsBroadcast(request)
          #
          #     {
          #         "id": "string",
          #         "signature": "string",
          #         "fee": 0,
          #         "timestamp": 1460678400000,
          #         "recipient": "3P274YB5qseSE9DTTL3bpSjosZrYBPDpJ8k",
          #         "amount": 0
          #     }
          #
          return self.parse_transaction(result, currency)
  
      def parse_transaction(self, transaction, currency=None):
          #
          # withdraw
          #
          #     {
          #         "id": "string",
          #         "signature": "string",
          #         "fee": 0,
          #         "timestamp": 1460678400000,
          #         "recipient": "3P274YB5qseSE9DTTL3bpSjosZrYBPDpJ8k",
          #         "amount": 0
          #     }
          #
          currency = self.safe_currency(None, currency)
          return {
              'id': None,
              'txid': None,
              'timestamp': None,
              'datetime': None,
              'network': None,
              'addressFrom': None,
              'address': None,
              'addressTo': None,
              'amount': None,
              'type': None,
              'currency': currency['code'],
              'status': None,
              'updated': None,
              'tagFrom': None,
              'tag': None,
              'tagTo': None,
              'comment': None,
              'fee': None,
              'info': transaction,
          }
  