# -*- 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

# -----------------------------------------------------------------------------

try:
    basestring  # Python 3
except NameError:
    basestring = str  # Python 2
import hashlib
from ccxt.base.errors import ExchangeError
from ccxt.base.errors import AuthenticationError
from ccxt.base.errors import PermissionDenied
from ccxt.base.errors import ArgumentsRequired
from ccxt.base.errors import BadRequest
from ccxt.base.errors import InsufficientFunds
from ccxt.base.errors import InvalidOrder
from ccxt.base.errors import DDoSProtection
from ccxt.base.errors import ExchangeNotAvailable
from ccxt.base.errors import InvalidNonce


class dsx(Exchange):

    def describe(self):
        return self.deep_extend(super(dsx, self).describe(), {
            'id': 'dsx',
            'name': 'DSX',
            'countries': ['UK'],
            'rateLimit': 1500,
            'version': 'v3',
            'has': {
                'cancelOrder': True,
                'CORS': False,
                'createDepositAddress': True,
                'createMarketOrder': False,
                'createOrder': True,
                'fetchBalance': True,
                'fetchClosedOrders': False,
                'fetchDepositAddress': True,
                'fetchMarkets': True,
                'fetchMyTrades': True,
                'fetchOHLCV': True,
                'fetchOpenOrders': True,
                'fetchOrder': True,
                'fetchOrderBook': True,
                'fetchOrderBooks': True,
                'fetchOrders': True,
                'fetchTicker': True,
                'fetchTickers': True,
                'fetchTransactions': True,
                'fetchTrades': True,
                'withdraw': True,
            },
            'urls': {
                'logo': 'https://user-images.githubusercontent.com/51840849/76909626-cb2bb100-68bc-11ea-99e0-28ba54f04792.jpg',
                'api': {
                    'public': 'https://dsxglobal.com/mapi',  # market data
                    'private': 'https://dsxglobal.com/tapi',  # trading
                    'dwapi': 'https://dsxglobal.com/dwapi',  # deposit/withdraw
                },
                'www': 'https://dsxglobal.com',
                'doc': [
                    'https://dsxglobal.com/developers/publicApi',
                ],
            },
            'fees': {
                'trading': {
                    'tierBased': True,
                    'percentage': True,
                    'maker': 0.15 / 100,
                    'taker': 0.25 / 100,
                },
            },
            'timeframes': {
                '1m': 'm',
                '1h': 'h',
                '1d': 'd',
            },
            'api': {
                # market data(public)
                'public': {
                    'get': [
                        'barsFromMoment/{pair}/{period}/{start}',
                        'depth/{pair}',
                        'info',
                        'lastBars/{pair}/{period}/{amount}',  # period is 'm', 'h' or 'd'
                        'periodBars/{pair}/{period}/{start}/{end}',
                        'ticker/{pair}',
                        'trades/{pair}',
                    ],
                },
                # trading(private)
                'private': {
                    'post': [
                        'info/account',
                        'history/transactions',
                        'history/trades',
                        'history/orders',
                        'orders',
                        'order/cancel',
                        # 'order/cancel/all',
                        'order/status',
                        'order/new',
                        'volume',
                        'fees',  # trading fee schedule
                    ],
                },
                # deposit / withdraw(private)
                'dwapi': {
                    'post': [
                        'deposit/cryptoaddress',
                        'withdraw/crypto',
                        'withdraw/fiat',
                        'withdraw/submit',
                        # 'withdraw/cancel',
                        'transaction/status',  # see 'history/transactions' in private tapi above
                    ],
                },
            },
            'exceptions': {
                'exact': {
                    'Sign is invalid': AuthenticationError,  # {"success":0,"error":"Sign is invalid"}
                    'Order was rejected. Incorrect price.': InvalidOrder,  # {"success":0,"error":"Order was rejected. Incorrect price."}
                    "Order was rejected. You don't have enough money.": InsufficientFunds,  # {"success":0,"error":"Order was rejected. You don't have enough money."}
                    'This method is blocked for your pair of keys': PermissionDenied,  # {"success":0,"error":"This method is blocked for your pair of keys"}
                },
                'broad': {
                    'INVALID_PARAMETER': BadRequest,
                    'Invalid pair name': ExchangeError,  # {"success":0,"error":"Invalid pair name: btc_eth"}
                    'invalid api key': AuthenticationError,
                    'invalid sign': AuthenticationError,
                    'api key dont have trade permission': AuthenticationError,
                    'invalid parameter': InvalidOrder,
                    'invalid order': InvalidOrder,
                    'Requests too often': DDoSProtection,
                    'not available': ExchangeNotAvailable,
                    'data unavailable': ExchangeNotAvailable,
                    'external service unavailable': ExchangeNotAvailable,
                    'nonce is invalid': InvalidNonce,  # {"success":0,"error":"Parameter: nonce is invalid"}
                    'Incorrect volume': InvalidOrder,  # {"success": 0,"error":"Order was rejected. Incorrect volume."}
                },
            },
            'options': {
                'fetchTickersMaxLength': 250,
            },
            'commonCurrencies': {
                'DSH': 'DASH',
            },
        })

    def fetch_markets(self, params={}):
        response = self.publicGetInfo(params)
        #
        #     {
        #         "server_time": 1522057909,
        #         "pairs": {
        #             "ethusd": {
        #                 "decimal_places": 5,
        #                 "min_price": 100,
        #                 "max_price": 1500,
        #                 "min_amount": 0.01,
        #                 "hidden": 0,
        #                 "fee": 0,
        #                 "amount_decimal_places": 4,
        #                 "quoted_currency": "USD",
        #                 "base_currency": "ETH"
        #             }
        #         }
        #     }
        #
        markets = self.safe_value(response, 'pairs')
        keys = list(markets.keys())
        result = []
        for i in range(0, len(keys)):
            id = keys[i]
            market = markets[id]
            baseId = self.safe_string(market, 'base_currency')
            quoteId = self.safe_string(market, 'quoted_currency')
            base = self.safe_currency_code(baseId)
            quote = self.safe_currency_code(quoteId)
            symbol = base + '/' + quote
            precision = {
                'amount': self.safe_integer(market, 'decimal_places'),
                'price': self.safe_integer(market, 'decimal_places'),
            }
            amountLimits = {
                'min': self.safe_float(market, 'min_amount'),
                'max': self.safe_float(market, 'max_amount'),
            }
            priceLimits = {
                'min': self.safe_float(market, 'min_price'),
                'max': self.safe_float(market, 'max_price'),
            }
            costLimits = {
                'min': self.safe_float(market, 'min_total'),
            }
            limits = {
                'amount': amountLimits,
                'price': priceLimits,
                'cost': costLimits,
            }
            hidden = self.safe_integer(market, 'hidden')
            active = (hidden == 0)
            # see parseMarket below
            # https://github.com/ccxt/ccxt/pull/5786
            otherId = base.lower() + quote.lower()
            result.append({
                'id': id,
                'otherId': otherId,  # https://github.com/ccxt/ccxt/pull/5786
                'symbol': symbol,
                'base': base,
                'quote': quote,
                'baseId': baseId,
                'quoteId': quoteId,
                'active': active,
                'precision': precision,
                'limits': limits,
                'info': market,
            })
        return result

    def fetch_balance(self, params={}):
        self.load_markets()
        response = self.privatePostInfoAccount()
        #
        #     {
        #         "success" : 1,
        #         "return" : {
        #             "funds" : {
        #                 "BTC" : {
        #                     "total" : 0,
        #                     "available" : 0
        #                 },
        #                 "USD" : {
        #                     "total" : 0,
        #                     "available" : 0
        #                 },
        #                 "USDT" : {
        #                     "total" : 0,
        #                     "available" : 0
        #                 }
        #             },
        #             "rights" : {
        #                 "info" : 1,
        #                 "trade" : 1
        #             },
        #             "transactionCount" : 0,
        #             "openOrders" : 0,
        #             "serverTime" : 1537451465
        #         }
        #     }
        #
        balances = self.safe_value(response, 'return')
        result = {'info': response}
        funds = self.safe_value(balances, 'funds')
        currencyIds = list(funds.keys())
        for i in range(0, len(currencyIds)):
            currencyId = currencyIds[i]
            code = self.safe_currency_code(currencyId)
            balance = self.safe_value(funds, currencyId, {})
            account = self.account()
            account['free'] = self.safe_float(balance, 'available')
            account['total'] = self.safe_float(balance, 'total')
            result[code] = account
        return self.parse_balance(result)

    def parse_ticker(self, ticker, market=None):
        #
        #   {   high:  0.03492,
        #         low:  0.03245,
        #         avg:  29.46133,
        #         vol:  500.8661,
        #     vol_cur:  17.000797104,
        #        last:  0.03364,
        #         buy:  0.03362,
        #        sell:  0.03381,
        #     updated:  1537521993,
        #        pair: "ethbtc"       }
        #
        timestamp = self.safe_timestamp(ticker, 'updated')
        symbol = None
        marketId = self.safe_string(ticker, 'pair')
        market = self.parse_market(marketId)
        if market is not None:
            symbol = market['symbol']
        # dsx average is inverted, liqui average is not
        average = self.safe_float(ticker, 'avg')
        if average is not None:
            if average > 0:
                average = 1 / average
        last = self.safe_float(ticker, 'last')
        return {
            'symbol': symbol,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'high': self.safe_float(ticker, 'high'),
            'low': self.safe_float(ticker, 'low'),
            'bid': self.safe_float(ticker, 'buy'),
            'bidVolume': None,
            'ask': self.safe_float(ticker, 'sell'),
            'askVolume': None,
            'vwap': None,
            'open': None,
            'close': last,
            'last': last,
            'previousClose': None,
            'change': None,
            'percentage': None,
            'average': average,
            'baseVolume': self.safe_float(ticker, 'vol'),
            'quoteVolume': self.safe_float(ticker, 'vol_cur'),
            'info': ticker,
        }

    def parse_trade(self, trade, market=None):
        #
        # fetchTrades(public)
        #
        #     {
        #         "amount" : 0.0128,
        #         "price" : 6483.99000,
        #         "timestamp" : 1540334614,
        #         "tid" : 35684364,
        #         "type" : "ask"
        #     }
        #
        # fetchMyTrades(private)
        #
        #     {
        #         "number": "36635882",  # <-- self is present if the trade has come from the '/order/status' call
        #         "id": "36635882",  # <-- self may have been artifically added by the parseTrades method
        #         "pair": "btcusd",
        #         "type": "buy",
        #         "volume": 0.0595,
        #         "rate": 9750,
        #         "orderId": 77149299,
        #         "timestamp": 1519612317,
        #         "commission": 0.00020825,
        #         "commissionCurrency": "btc"
        #     }
        #
        timestamp = self.safe_timestamp(trade, 'timestamp')
        side = self.safe_string(trade, 'type')
        if side == 'ask':
            side = 'sell'
        elif side == 'bid':
            side = 'buy'
        price = self.safe_float_2(trade, 'rate', 'price')
        id = self.safe_string_2(trade, 'number', 'id')
        orderId = self.safe_string(trade, 'orderId')
        marketId = self.safe_string(trade, 'pair')
        market = self.parse_market(marketId)
        symbol = None
        if market is not None:
            symbol = market['symbol']
        amount = self.safe_float_2(trade, 'amount', 'volume')
        type = 'limit'  # all trades are still limit trades
        takerOrMaker = None
        fee = None
        feeCost = self.safe_float(trade, 'commission')
        if feeCost is not None:
            feeCurrencyId = self.safe_string(trade, 'commissionCurrency')
            feeCurrencyCode = self.safe_currency_code(feeCurrencyId)
            fee = {
                'cost': feeCost,
                'currency': feeCurrencyCode,
            }
        isYourOrder = self.safe_value(trade, 'is_your_order')
        if isYourOrder is not None:
            takerOrMaker = 'taker'
            if isYourOrder:
                takerOrMaker = 'maker'
            if fee is None:
                fee = self.calculate_fee(symbol, type, side, amount, price, takerOrMaker)
        cost = None
        if price is not None:
            if amount is not None:
                cost = price * amount
        return {
            'id': id,
            'order': orderId,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'symbol': symbol,
            'type': type,
            'side': side,
            'takerOrMaker': takerOrMaker,
            'price': price,
            'amount': amount,
            'cost': cost,
            'fee': fee,
            'info': trade,
        }

    def parse_trades(self, trades, market=None, since=None, limit=None, params={}):
        result = []
        if isinstance(trades, list):
            for i in range(0, len(trades)):
                result.append(self.parse_trade(trades[i], market))
        else:
            ids = list(trades.keys())
            for i in range(0, len(ids)):
                id = ids[i]
                trade = self.parse_trade(trades[id], market)
                result.append(self.extend(trade, {'id': id}, params))
        result = self.sort_by(result, 'timestamp')
        symbol = market['symbol'] if (market is not None) else None
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

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

    def fetch_order_book(self, symbol, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {
            'pair': market['id'],
        }
        if limit is not None:
            request['limit'] = limit  # default = 150, max = 2000
        response = self.publicGetDepthPair(self.extend(request, params))
        market_id_in_reponse = (market['id'] in response)
        if not market_id_in_reponse:
            raise ExchangeError(self.id + ' ' + market['symbol'] + ' order book is empty or not available')
        orderbook = response[market['id']]
        return self.parse_order_book(orderbook)

    def fetch_order_books(self, symbols=None, limit=None, params={}):
        self.load_markets()
        ids = None
        if symbols is None:
            ids = '-'.join(self.ids)
            # max URL length is 2083 symbols, including http schema, hostname, tld, etc...
            if len(ids) > 2048:
                numIds = len(self.ids)
                raise ExchangeError(self.id + ' has ' + str(numIds) + ' symbols exceeding max URL length, you are required to specify a list of symbols in the first argument to fetchOrderBooks')
        else:
            ids = self.market_ids(symbols)
            ids = '-'.join(ids)
        request = {
            'pair': ids,
        }
        if limit is not None:
            request['limit'] = limit  # default = 150, max = 2000
        response = self.publicGetDepthPair(self.extend(request, params))
        result = {}
        ids = list(response.keys())
        for i in range(0, len(ids)):
            id = ids[i]
            symbol = id
            if id in self.markets_by_id:
                market = self.markets_by_id[id]
                symbol = market['symbol']
            result[symbol] = self.parse_order_book(response[id])
        return result

    def fetch_tickers(self, symbols=None, params={}):
        self.load_markets()
        ids = self.ids
        if symbols is None:
            numIds = len(ids)
            ids = '-'.join(ids)
            maxLength = self.safe_integer(self.options, 'fetchTickersMaxLength', 2048)
            # max URL length is 2048 symbols, including http schema, hostname, tld, etc...
            if len(ids) > self.options['fetchTickersMaxLength']:
                raise ArgumentsRequired(self.id + ' has ' + str(numIds) + ' markets exceeding max URL length for self endpoint(' + str(maxLength) + ' characters), please, specify a list of symbols of interest in the first argument to fetchTickers')
        else:
            ids = self.market_ids(symbols)
            ids = '-'.join(ids)
        request = {
            'pair': ids,
        }
        tickers = self.publicGetTickerPair(self.extend(request, params))
        #
        #     {
        #         "bchbtc" : {
        #             "high" : 0.02989,
        #             "low" : 0.02736,
        #             "avg" : 33.90585,
        #             "vol" : 0.65982205,
        #             "vol_cur" : 0.0194604180960,
        #             "last" : 0.03000,
        #             "buy" : 0.02980,
        #             "sell" : 0.03001,
        #             "updated" : 1568104614,
        #             "pair" : "bchbtc"
        #         },
        #         "ethbtc" : {
        #             "high" : 0.01772,
        #             "low" : 0.01742,
        #             "avg" : 56.89082,
        #             "vol" : 229.247115044,
        #             "vol_cur" : 4.02959737298943,
        #             "last" : 0.01769,
        #             "buy" : 0.01768,
        #             "sell" : 0.01776,
        #             "updated" : 1568104614,
        #             "pair" : "ethbtc"
        #         }
        #     }
        #
        result = {}
        keys = list(tickers.keys())
        for k in range(0, len(keys)):
            id = keys[k]
            ticker = tickers[id]
            symbol = id
            market = None
            if id in self.markets_by_id:
                market = self.markets_by_id[id]
                symbol = market['symbol']
            result[symbol] = self.parse_ticker(ticker, market)
        return result

    def fetch_ticker(self, symbol, params={}):
        tickers = self.fetch_tickers([symbol], params)
        return tickers[symbol]

    def fetch_trades(self, symbol, since=None, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {
            'pair': market['id'],
        }
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetTradesPair(self.extend(request, params))
        if isinstance(response, list):
            numElements = len(response)
            if numElements == 0:
                return []
        return self.parse_trades(response[market['id']], market, since, limit)

    def parse_ohlcv(self, ohlcv, market=None):
        #
        #     {
        #         "high" : 0.01955,
        #         "open" : 0.01955,
        #         "low" : 0.01955,
        #         "close" : 0.01955,
        #         "amount" : 2.5,
        #         "timestamp" : 1565155740000
        #     }
        #
        return [
            self.safe_integer(ohlcv, 'timestamp'),
            self.safe_float(ohlcv, 'open'),
            self.safe_float(ohlcv, 'high'),
            self.safe_float(ohlcv, 'low'),
            self.safe_float(ohlcv, 'close'),
            self.safe_float(ohlcv, 'amount'),
        ]

    def fetch_ohlcv(self, symbol, timeframe='1m', since=None, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {
            'pair': market['id'],
            'period': self.timeframes[timeframe],
        }
        method = 'publicGetLastBarsPairPeriodAmount'
        if since is None:
            if limit is None:
                limit = 100  # required, max 2000
            request['amount'] = limit
        else:
            method = 'publicGetPeriodBarsPairPeriodStartEnd'
            # in their docs they expect milliseconds
            # but it returns empty arrays with milliseconds
            # however, it does work properly with seconds
            request['start'] = int(since / 1000)
            if limit is None:
                request['end'] = self.seconds()
            else:
                duration = self.parse_timeframe(timeframe) * 1000
                end = self.sum(since, duration * limit)
                request['end'] = int(end / 1000)
        response = getattr(self, method)(self.extend(request, params))
        #
        #     {
        #         "ethbtc": [
        #             {
        #                 "high" : 0.01955,
        #                 "open" : 0.01955,
        #                 "low" : 0.01955,
        #                 "close" : 0.01955,
        #                 "amount" : 2.5,
        #                 "timestamp" : 1565155740000
        #             },
        #             {
        #                 "high" : 0.01967,
        #                 "open" : 0.01967,
        #                 "low" : 0.01967,
        #                 "close" : 0.01967,
        #                 "amount" : 0,
        #                 "timestamp" : 1565155680000
        #             }
        #         ]
        #     }
        #
        candles = self.safe_value(response, market['id'], [])
        return self.parse_ohlcvs(candles, market, timeframe, since, limit)

    def create_order(self, symbol, type, side, amount, price=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        if type == 'market' and price is None:
            raise ArgumentsRequired(self.id + ' createOrder requires a price argument even for market orders, that is the worst price that you agree to fill your order for')
        request = {
            'pair': market['id'],
            'type': side,
            'volume': self.amount_to_precision(symbol, amount),
            'rate': self.price_to_precision(symbol, price),
            'orderType': type,
        }
        price = float(price)
        amount = float(amount)
        response = self.privatePostOrderNew(self.extend(request, params))
        #
        #     {
        #       "success": 1,
        #       "return": {
        #         "received": 0,
        #         "remains": 10,
        #         "funds": {
        #           "BTC": {
        #             "total": 100,
        #             "available": 95
        #           },
        #           "USD": {
        #             "total": 10000,
        #             "available": 9995
        #           },
        #           "EUR": {
        #             "total": 1000,
        #             "available": 995
        #           },
        #           "LTC": {
        #             "total": 1000,
        #             "available": 995
        #           }
        #         },
        #         "orderId": 0,  # https://github.com/ccxt/ccxt/issues/3677
        #       }
        #     }
        #
        status = 'open'
        filled = 0.0
        remaining = amount
        responseReturn = self.safe_value(response, 'return')
        id = self.safe_string_2(responseReturn, 'orderId', 'order_id')
        if id == '0':
            id = self.safe_string(responseReturn, 'initOrderId', 'init_order_id')
            status = 'closed'
        filled = self.safe_float(responseReturn, 'received', 0.0)
        remaining = self.safe_float(responseReturn, 'remains', amount)
        timestamp = self.milliseconds()
        return {
            'info': response,
            'id': id,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'lastTradeTimestamp': None,
            'status': status,
            'symbol': symbol,
            'type': type,
            'side': side,
            'price': price,
            'cost': price * filled,
            'amount': amount,
            'remaining': remaining,
            'filled': filled,
            'fee': None,
            # 'trades': self.parse_trades(order['trades'], market),
        }

    def parse_order_status(self, status):
        statuses = {
            '0': 'open',  # Active
            '1': 'closed',  # Filled
            '2': 'canceled',  # Killed
            '3': 'canceling',  # Killing
            '7': 'canceled',  # Rejected
        }
        return self.safe_string(statuses, status, status)

    def parse_market(self, id):
        if id in self.markets_by_id:
            return self.markets_by_id[id]
        else:
            # the following is a fix for
            # https://github.com/ccxt/ccxt/pull/5786
            # https://github.com/ccxt/ccxt/issues/5770
            markets_by_other_id = self.safe_value(self.options, 'markets_by_other_id')
            if markets_by_other_id is None:
                self.options['markets_by_other_id'] = self.index_by(self.markets, 'otherId')
                markets_by_other_id = self.options['markets_by_other_id']
            if id in markets_by_other_id:
                return markets_by_other_id[id]
        return None

    def parse_order(self, order, market=None):
        #
        # fetchOrder
        #
        #   {
        #     "number": 36635882,
        #     "pair": "btcusd",
        #     "type": "buy",
        #     "remainingVolume": 10,
        #     "volume": 10,
        #     "rate": 1000.0,
        #     "timestampCreated": 1496670,
        #     "status": 0,
        #     "orderType": "limit",
        #     "deals": [
        #       {
        #         "pair": "btcusd",
        #         "type": "buy",
        #         "amount": 1,
        #         "rate": 1000.0,
        #         "orderId": 1,
        #         "timestamp": 1496672724,
        #         "commission": 0.001,
        #         "commissionCurrency": "btc"
        #       }
        #     ]
        #   }
        #
        id = self.safe_string(order, 'id')
        status = self.parse_order_status(self.safe_string(order, 'status'))
        timestamp = self.safe_timestamp(order, 'timestampCreated')
        marketId = self.safe_string(order, 'pair')
        market = self.parse_market(marketId)
        symbol = None
        if market is not None:
            symbol = market['symbol']
        remaining = self.safe_float(order, 'remainingVolume')
        amount = self.safe_float(order, 'volume')
        price = self.safe_float(order, 'rate')
        filled = None
        cost = None
        if amount is not None:
            if remaining is not None:
                filled = amount - remaining
                cost = price * filled
        orderType = self.safe_string(order, 'orderType')
        side = self.safe_string(order, 'type')
        fee = None
        deals = self.safe_value(order, 'deals', [])
        numDeals = len(deals)
        trades = None
        lastTradeTimestamp = None
        if numDeals > 0:
            trades = self.parse_trades(deals)
            feeCost = None
            feeCurrency = None
            for i in range(0, len(trades)):
                trade = trades[i]
                if feeCost is None:
                    feeCost = 0
                feeCost = self.sum(feeCost, trade['fee']['cost'])
                feeCurrency = trade['fee']['currency']
                lastTradeTimestamp = trade['timestamp']
            if feeCost is not None:
                fee = {
                    'cost': feeCost,
                    'currency': feeCurrency,
                }
        return {
            'info': order,
            'id': id,
            'clientOrderId': None,
            'symbol': symbol,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'lastTradeTimestamp': lastTradeTimestamp,
            'type': orderType,
            'side': side,
            'price': price,
            'cost': cost,
            'amount': amount,
            'remaining': remaining,
            'filled': filled,
            'status': status,
            'fee': fee,
            'trades': trades,
        }

    def fetch_order(self, id, symbol=None, params={}):
        self.load_markets()
        request = {
            'orderId': int(id),
        }
        response = self.privatePostOrderStatus(self.extend(request, params))
        #
        #     {
        #       "success": 1,
        #       "return": {
        #         "pair": "btcusd",
        #         "type": "buy",
        #         "remainingVolume": 10,
        #         "volume": 10,
        #         "rate": 1000.0,
        #         "timestampCreated": 1496670,
        #         "status": 0,
        #         "orderType": "limit",
        #         "deals": [
        #           {
        #             "pair": "btcusd",
        #             "type": "buy",
        #             "amount": 1,
        #             "rate": 1000.0,
        #             "orderId": 1,
        #             "timestamp": 1496672724,
        #             "commission": 0.001,
        #             "commissionCurrency": "btc"
        #           }
        #         ]
        #       }
        #     }
        #
        return self.parse_order(self.extend({
            'id': id,
        }, response['return']))

    def parse_orders_by_id(self, orders, symbol=None, since=None, limit=None):
        ids = list(orders.keys())
        result = []
        for i in range(0, len(ids)):
            id = ids[i]
            order = self.parse_order(self.extend({
                'id': str(id),
            }, orders[id]))
            result.append(order)
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

    def fetch_open_orders(self, symbol=None, since=None, limit=None, params={}):
        self.load_markets()
        request = {
            # 'count': 10,  # Decimal, The maximum number of orders to return
            # 'fromId': 123,  # Decimal, ID of the first order of the selection
            # 'endId': 321,  # Decimal, ID of the last order of the selection
            # 'order': 'ASC',  # String, Order in which orders shown. Possible values are "ASC" — from first to last, "DESC" — from last to first.
        }
        response = self.privatePostOrders(self.extend(request, params))
        #
        #     {
        #       "success": 1,
        #       "return": {
        #         "0": {
        #           "pair": "btcusd",
        #           "type": "buy",
        #           "remainingVolume": 10,
        #           "volume": 10,
        #           "rate": 1000.0,
        #           "timestampCreated": 1496670,
        #           "status": 0,
        #           "orderType": "limit"
        #         }
        #       }
        #     }
        #
        return self.parse_orders_by_id(self.safe_value(response, 'return', {}), symbol, since, limit)

    def fetch_orders(self, symbol=None, since=None, limit=None, params={}):
        self.load_markets()
        request = {
            # 'count': 10,  # Decimal, The maximum number of orders to return
            # 'fromId': 123,  # Decimal, ID of the first order of the selection
            # 'endId': 321,  # Decimal, ID of the last order of the selection
            # 'order': 'ASC',  # String, Order in which orders shown. Possible values are "ASC" — from first to last, "DESC" — from last to first.
        }
        if limit is not None:
            request['count'] = limit
        response = self.privatePostHistoryOrders(self.extend(request, params))
        #
        #     {
        #       "success": 1,
        #       "return": {
        #         "0": {
        #           "pair": "btcusd",
        #           "type": "buy",
        #           "remainingVolume": 10,
        #           "volume": 10,
        #           "rate": 1000.0,
        #           "timestampCreated": 1496670,
        #           "status": 0,
        #           "orderType": "limit"
        #         }
        #       }
        #     }
        #
        return self.parse_orders_by_id(self.safe_value(response, 'return', {}), symbol, since, limit)

    def cancel_order(self, id, symbol=None, params={}):
        self.load_markets()
        request = {
            'orderId': id,
        }
        response = self.privatePostOrderCancel(self.extend(request, params))
        if id in self.orders:
            self.orders[id]['status'] = 'canceled'
        return response

    def parse_orders(self, orders, market=None, since=None, limit=None, params={}):
        result = []
        ids = list(orders.keys())
        symbol = None
        if market is not None:
            symbol = market['symbol']
        for i in range(0, len(ids)):
            id = ids[i]
            order = self.extend({'id': id}, orders[id])
            result.append(self.extend(self.parse_order(order, market), params))
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

    def fetch_closed_orders(self, symbol=None, since=None, limit=None, params={}):
        orders = self.fetch_orders(symbol, since, limit, params)
        return self.filter_by(orders, 'status', 'closed')

    def fetch_my_trades(self, symbol=None, since=None, limit=None, params={}):
        self.load_markets()
        market = None
        # some derived classes use camelcase notation for request fields
        request = {
            # 'from': 123456789,  # trade ID, from which the display starts numerical 0(test result: liqui ignores self field)
            # 'count': 1000,  # the number of trades for display numerical, default = 1000
            # 'from_id': trade ID, from which the display starts numerical 0
            # 'end_id': trade ID on which the display ends numerical ∞
            # 'order': 'ASC',  # sorting, default = DESC(test result: liqui ignores self field, most recent trade always goes last)
            # 'since': 1234567890,  # UTC start time, default = 0(test result: liqui ignores self field)
            # 'end': 1234567890,  # UTC end time, default = ∞(test result: liqui ignores self field)
            # 'pair': 'eth_btc',  # default = all markets
        }
        if symbol is not None:
            market = self.market(symbol)
            request['pair'] = market['id']
        if limit is not None:
            request['count'] = int(limit)
        if since is not None:
            request['since'] = int(since / 1000)
        response = self.privatePostHistoryTrades(self.extend(request, params))
        trades = []
        if 'return' in response:
            trades = response['return']
        return self.parse_trades(trades, market, since, limit)

    def fetch_transactions(self, code=None, since=None, limit=None, params={}):
        self.load_markets()
        currency = None
        request = {}
        if code is not None:
            currency = self.currency(code)
            request['currency'] = currency['id']
        if since is not None:
            request['since'] = since
        if limit is not None:
            request['count'] = limit
        response = self.privatePostHistoryTransactions(self.extend(request, params))
        #
        #     {
        #         "success": 1,
        #         "return": [
        #             {
        #                 "id": 1,
        #                 "timestamp": 11,
        #                 "type": "Withdraw",
        #                 "amount": 1,
        #                 "currency": "btc",
        #                 "confirmationsCount": 6,
        #                 "address": "address",
        #                 "status": 2,
        #                 "commission": 0.0001
        #             }
        #         ]
        #     }
        #
        transactions = self.safe_value(response, 'return', [])
        return self.parse_transactions(transactions, currency, since, limit)

    def parse_transaction_status(self, status):
        statuses = {
            '1': 'failed',
            '2': 'ok',
            '3': 'pending',
            '4': 'failed',
        }
        return self.safe_string(statuses, status, status)

    def parse_transaction(self, transaction, currency=None):
        #
        #     {
        #         "id": 1,
        #         "timestamp": 11,  # 11 in their docs(
        #         "type": "Withdraw",
        #         "amount": 1,
        #         "currency": "btc",
        #         "confirmationsCount": 6,
        #         "address": "address",
        #         "status": 2,
        #         "commission": 0.0001
        #     }
        #
        timestamp = self.safe_timestamp(transaction, 'timestamp')
        type = self.safe_string(transaction, 'type')
        if type is not None:
            if type == 'Incoming':
                type = 'deposit'
            elif type == 'Withdraw':
                type = 'withdrawal'
        currencyId = self.safe_string(transaction, 'currency')
        code = self.safe_currency_code(currencyId, currency)
        status = self.parse_transaction_status(self.safe_string(transaction, 'status'))
        return {
            'id': self.safe_string(transaction, 'id'),
            'txid': self.safe_string(transaction, 'txid'),
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'address': self.safe_string(transaction, 'address'),
            'type': type,
            'amount': self.safe_float(transaction, 'amount'),
            'currency': code,
            'status': status,
            'fee': {
                'currency': code,
                'cost': self.safe_float(transaction, 'commission'),
                'rate': None,
            },
            'info': transaction,
        }

    def create_deposit_address(self, code, params={}):
        request = {
            'new': 1,
        }
        response = self.fetch_deposit_address(code, self.extend(request, params))
        return response

    def fetch_deposit_address(self, code, params={}):
        self.load_markets()
        currency = self.currency(code)
        request = {
            'currency': currency['id'],
        }
        response = self.dwapiPostDepositCryptoaddress(self.extend(request, params))
        result = self.safe_value(response, 'return', {})
        address = self.safe_string(result, 'address')
        self.check_address(address)
        return {
            'currency': code,
            'address': address,
            'tag': None,  # not documented in DSX API
            'info': response,
        }

    def withdraw(self, code, amount, address, tag=None, params={}):
        self.check_address(address)
        self.load_markets()
        currency = self.currency(code)
        commission = self.safe_value(params, 'commission')
        if commission is None:
            raise ArgumentsRequired(self.id + ' withdraw() requires a `commission`(withdrawal fee) parameter(string)')
        params = self.omit(params, commission)
        request = {
            'currency': currency['id'],
            'amount': float(amount),
            'address': address,
            'commission': commission,
        }
        if tag is not None:
            request['address'] += ':' + tag
        response = self.dwapiPostWithdrawCrypto(self.extend(request, params))
        #
        #     [
        #         {
        #             "success": 1,
        #             "return": {
        #                 "transactionId": 2863073
        #             }
        #         }
        #     ]
        #
        data = self.safe_value(response, 'return', {})
        id = self.safe_string(data, 'transactionId')
        return {
            'info': response,
            'id': id,
        }

    def sign(self, path, api='public', method='GET', params={}, headers=None, body=None):
        url = self.urls['api'][api]
        query = self.omit(params, self.extract_params(path))
        if api == 'private' or api == 'dwapi':
            url += '/' + self.version + '/' + self.implode_params(path, params)
            self.check_required_credentials()
            nonce = self.nonce()
            body = self.urlencode(self.extend({
                'nonce': nonce,
            }, query))
            signature = self.decode(self.hmac(self.encode(body), self.encode(self.secret), hashlib.sha512, 'base64'))
            headers = {
                'Content-Type': 'application/x-www-form-urlencoded',
                'Key': self.apiKey,
                'Sign': signature,
            }
        elif api == 'public':
            url += '/' + self.implode_params(path, params)
            if query:
                url += '?' + self.urlencode(query)
        else:
            url += '/' + self.implode_params(path, params)
            if method == 'GET':
                if query:
                    url += '?' + self.urlencode(query)
            else:
                if query:
                    body = self.json(query)
                    headers = {
                        'Content-Type': 'application/json',
                    }
        return {'url': url, 'method': method, 'body': body, 'headers': headers}

    def handle_errors(self, httpCode, reason, url, method, headers, body, response, requestHeaders, requestBody):
        if response is None:
            return  # fallback to default error handler
        if 'success' in response:
            #
            # 1 - Liqui only returns the integer 'success' key from their private API
            #
            #     {"success": 1, ...} httpCode == 200
            #     {"success": 0, ...} httpCode == 200
            #
            # 2 - However, exchanges derived from Liqui, can return non-integers
            #
            #     It can be a numeric string
            #     {"sucesss": "1", ...}
            #     {"sucesss": "0", ...}, httpCode >= 200(can be 403, 502, etc)
            #
            #     Or just a string
            #     {"success": "true", ...}
            #     {"success": "false", ...}, httpCode >= 200
            #
            #     Or a boolean
            #     {"success": True, ...}
            #     {"success": False, ...}, httpCode >= 200
            #
            # 3 - Oversimplified, Python PEP8 forbids comparison operator(==) of different types
            #
            # 4 - We do not want to copy-paste and duplicate the code of self handler to other exchanges derived from Liqui
            #
            # To cover points 1, 2, 3 and 4 combined self handler should work like self:
            #
            success = self.safe_value(response, 'success', False)
            if isinstance(success, basestring):
                if (success == 'true') or (success == '1'):
                    success = True
                else:
                    success = False
            if not success:
                code = self.safe_string(response, 'code')
                message = self.safe_string(response, 'error')
                feedback = self.id + ' ' + body
                self.throw_exactly_matched_exception(self.exceptions['exact'], code, feedback)
                self.throw_exactly_matched_exception(self.exceptions['exact'], message, feedback)
                self.throw_broadly_matched_exception(self.exceptions['broad'], message, feedback)
                raise ExchangeError(feedback)  # unknown message

74a45cc15e7a870176be82d206ec4f8a9735fa78
<mask token>


class dsx(Exchange):
    <mask token>

    def fetch_markets(self, params={}):
        response = self.publicGetInfo(params)
        markets = self.safe_value(response, 'pairs')
        keys = list(markets.keys())
        result = []
        for i in range(0, len(keys)):
            id = keys[i]
            market = markets[id]
            baseId = self.safe_string(market, 'base_currency')
            quoteId = self.safe_string(market, 'quoted_currency')
            base = self.safe_currency_code(baseId)
            quote = self.safe_currency_code(quoteId)
            symbol = base + '/' + quote
            precision = {'amount': self.safe_integer(market,
                'decimal_places'), 'price': self.safe_integer(market,
                'decimal_places')}
            amountLimits = {'min': self.safe_float(market, 'min_amount'),
                'max': self.safe_float(market, 'max_amount')}
            priceLimits = {'min': self.safe_float(market, 'min_price'),
                'max': self.safe_float(market, 'max_price')}
            costLimits = {'min': self.safe_float(market, 'min_total')}
            limits = {'amount': amountLimits, 'price': priceLimits, 'cost':
                costLimits}
            hidden = self.safe_integer(market, 'hidden')
            active = hidden == 0
            otherId = base.lower() + quote.lower()
            result.append({'id': id, 'otherId': otherId, 'symbol': symbol,
                'base': base, 'quote': quote, 'baseId': baseId, 'quoteId':
                quoteId, 'active': active, 'precision': precision, 'limits':
                limits, 'info': market})
        return result

    def fetch_balance(self, params={}):
        self.load_markets()
        response = self.privatePostInfoAccount()
        balances = self.safe_value(response, 'return')
        result = {'info': response}
        funds = self.safe_value(balances, 'funds')
        currencyIds = list(funds.keys())
        for i in range(0, len(currencyIds)):
            currencyId = currencyIds[i]
            code = self.safe_currency_code(currencyId)
            balance = self.safe_value(funds, currencyId, {})
            account = self.account()
            account['free'] = self.safe_float(balance, 'available')
            account['total'] = self.safe_float(balance, 'total')
            result[code] = account
        return self.parse_balance(result)

    def parse_ticker(self, ticker, market=None):
        timestamp = self.safe_timestamp(ticker, 'updated')
        symbol = None
        marketId = self.safe_string(ticker, 'pair')
        market = self.parse_market(marketId)
        if market is not None:
            symbol = market['symbol']
        average = self.safe_float(ticker, 'avg')
        if average is not None:
            if average > 0:
                average = 1 / average
        last = self.safe_float(ticker, 'last')
        return {'symbol': symbol, 'timestamp': timestamp, 'datetime': self.
            iso8601(timestamp), 'high': self.safe_float(ticker, 'high'),
            'low': self.safe_float(ticker, 'low'), 'bid': self.safe_float(
            ticker, 'buy'), 'bidVolume': None, 'ask': self.safe_float(
            ticker, 'sell'), 'askVolume': None, 'vwap': None, 'open': None,
            'close': last, 'last': last, 'previousClose': None, 'change':
            None, 'percentage': None, 'average': average, 'baseVolume':
            self.safe_float(ticker, 'vol'), 'quoteVolume': self.safe_float(
            ticker, 'vol_cur'), 'info': ticker}

    def parse_trade(self, trade, market=None):
        timestamp = self.safe_timestamp(trade, 'timestamp')
        side = self.safe_string(trade, 'type')
        if side == 'ask':
            side = 'sell'
        elif side == 'bid':
            side = 'buy'
        price = self.safe_float_2(trade, 'rate', 'price')
        id = self.safe_string_2(trade, 'number', 'id')
        orderId = self.safe_string(trade, 'orderId')
        marketId = self.safe_string(trade, 'pair')
        market = self.parse_market(marketId)
        symbol = None
        if market is not None:
            symbol = market['symbol']
        amount = self.safe_float_2(trade, 'amount', 'volume')
        type = 'limit'
        takerOrMaker = None
        fee = None
        feeCost = self.safe_float(trade, 'commission')
        if feeCost is not None:
            feeCurrencyId = self.safe_string(trade, 'commissionCurrency')
            feeCurrencyCode = self.safe_currency_code(feeCurrencyId)
            fee = {'cost': feeCost, 'currency': feeCurrencyCode}
        isYourOrder = self.safe_value(trade, 'is_your_order')
        if isYourOrder is not None:
            takerOrMaker = 'taker'
            if isYourOrder:
                takerOrMaker = 'maker'
            if fee is None:
                fee = self.calculate_fee(symbol, type, side, amount, price,
                    takerOrMaker)
        cost = None
        if price is not None:
            if amount is not None:
                cost = price * amount
        return {'id': id, 'order': orderId, 'timestamp': timestamp,
            'datetime': self.iso8601(timestamp), 'symbol': symbol, 'type':
            type, 'side': side, 'takerOrMaker': takerOrMaker, 'price':
            price, 'amount': amount, 'cost': cost, 'fee': fee, 'info': trade}

    def parse_trades(self, trades, market=None, since=None, limit=None,
        params={}):
        result = []
        if isinstance(trades, list):
            for i in range(0, len(trades)):
                result.append(self.parse_trade(trades[i], market))
        else:
            ids = list(trades.keys())
            for i in range(0, len(ids)):
                id = ids[i]
                trade = self.parse_trade(trades[id], market)
                result.append(self.extend(trade, {'id': id}, params))
        result = self.sort_by(result, 'timestamp')
        symbol = market['symbol'] if market is not None else None
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

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

    def fetch_order_book(self, symbol, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {'pair': market['id']}
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetDepthPair(self.extend(request, params))
        market_id_in_reponse = market['id'] in response
        if not market_id_in_reponse:
            raise ExchangeError(self.id + ' ' + market['symbol'] +
                ' order book is empty or not available')
        orderbook = response[market['id']]
        return self.parse_order_book(orderbook)

    def fetch_order_books(self, symbols=None, limit=None, params={}):
        self.load_markets()
        ids = None
        if symbols is None:
            ids = '-'.join(self.ids)
            if len(ids) > 2048:
                numIds = len(self.ids)
                raise ExchangeError(self.id + ' has ' + str(numIds) +
                    ' symbols exceeding max URL length, you are required to specify a list of symbols in the first argument to fetchOrderBooks'
                    )
        else:
            ids = self.market_ids(symbols)
            ids = '-'.join(ids)
        request = {'pair': ids}
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetDepthPair(self.extend(request, params))
        result = {}
        ids = list(response.keys())
        for i in range(0, len(ids)):
            id = ids[i]
            symbol = id
            if id in self.markets_by_id:
                market = self.markets_by_id[id]
                symbol = market['symbol']
            result[symbol] = self.parse_order_book(response[id])
        return result
    <mask token>

    def fetch_ticker(self, symbol, params={}):
        tickers = self.fetch_tickers([symbol], params)
        return tickers[symbol]

    def fetch_trades(self, symbol, since=None, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {'pair': market['id']}
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetTradesPair(self.extend(request, params))
        if isinstance(response, list):
            numElements = len(response)
            if numElements == 0:
                return []
        return self.parse_trades(response[market['id']], market, since, limit)

    def parse_ohlcv(self, ohlcv, market=None):
        return [self.safe_integer(ohlcv, 'timestamp'), self.safe_float(
            ohlcv, 'open'), self.safe_float(ohlcv, 'high'), self.safe_float
            (ohlcv, 'low'), self.safe_float(ohlcv, 'close'), self.
            safe_float(ohlcv, 'amount')]

    def fetch_ohlcv(self, symbol, timeframe='1m', since=None, limit=None,
        params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {'pair': market['id'], 'period': self.timeframes[timeframe]}
        method = 'publicGetLastBarsPairPeriodAmount'
        if since is None:
            if limit is None:
                limit = 100
            request['amount'] = limit
        else:
            method = 'publicGetPeriodBarsPairPeriodStartEnd'
            request['start'] = int(since / 1000)
            if limit is None:
                request['end'] = self.seconds()
            else:
                duration = self.parse_timeframe(timeframe) * 1000
                end = self.sum(since, duration * limit)
                request['end'] = int(end / 1000)
        response = getattr(self, method)(self.extend(request, params))
        candles = self.safe_value(response, market['id'], [])
        return self.parse_ohlcvs(candles, market, timeframe, since, limit)
    <mask token>

    def parse_order_status(self, status):
        statuses = {'0': 'open', '1': 'closed', '2': 'canceled', '3':
            'canceling', '7': 'canceled'}
        return self.safe_string(statuses, status, status)

    def parse_market(self, id):
        if id in self.markets_by_id:
            return self.markets_by_id[id]
        else:
            markets_by_other_id = self.safe_value(self.options,
                'markets_by_other_id')
            if markets_by_other_id is None:
                self.options['markets_by_other_id'] = self.index_by(self.
                    markets, 'otherId')
                markets_by_other_id = self.options['markets_by_other_id']
            if id in markets_by_other_id:
                return markets_by_other_id[id]
        return None

    def parse_order(self, order, market=None):
        id = self.safe_string(order, 'id')
        status = self.parse_order_status(self.safe_string(order, 'status'))
        timestamp = self.safe_timestamp(order, 'timestampCreated')
        marketId = self.safe_string(order, 'pair')
        market = self.parse_market(marketId)
        symbol = None
        if market is not None:
            symbol = market['symbol']
        remaining = self.safe_float(order, 'remainingVolume')
        amount = self.safe_float(order, 'volume')
        price = self.safe_float(order, 'rate')
        filled = None
        cost = None
        if amount is not None:
            if remaining is not None:
                filled = amount - remaining
                cost = price * filled
        orderType = self.safe_string(order, 'orderType')
        side = self.safe_string(order, 'type')
        fee = None
        deals = self.safe_value(order, 'deals', [])
        numDeals = len(deals)
        trades = None
        lastTradeTimestamp = None
        if numDeals > 0:
            trades = self.parse_trades(deals)
            feeCost = None
            feeCurrency = None
            for i in range(0, len(trades)):
                trade = trades[i]
                if feeCost is None:
                    feeCost = 0
                feeCost = self.sum(feeCost, trade['fee']['cost'])
                feeCurrency = trade['fee']['currency']
                lastTradeTimestamp = trade['timestamp']
            if feeCost is not None:
                fee = {'cost': feeCost, 'currency': feeCurrency}
        return {'info': order, 'id': id, 'clientOrderId': None, 'symbol':
            symbol, 'timestamp': timestamp, 'datetime': self.iso8601(
            timestamp), 'lastTradeTimestamp': lastTradeTimestamp, 'type':
            orderType, 'side': side, 'price': price, 'cost': cost, 'amount':
            amount, 'remaining': remaining, 'filled': filled, 'status':
            status, 'fee': fee, 'trades': trades}

    def fetch_order(self, id, symbol=None, params={}):
        self.load_markets()
        request = {'orderId': int(id)}
        response = self.privatePostOrderStatus(self.extend(request, params))
        return self.parse_order(self.extend({'id': id}, response['return']))

    def parse_orders_by_id(self, orders, symbol=None, since=None, limit=None):
        ids = list(orders.keys())
        result = []
        for i in range(0, len(ids)):
            id = ids[i]
            order = self.parse_order(self.extend({'id': str(id)}, orders[id]))
            result.append(order)
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

    def fetch_open_orders(self, symbol=None, since=None, limit=None, params={}
        ):
        self.load_markets()
        request = {}
        response = self.privatePostOrders(self.extend(request, params))
        return self.parse_orders_by_id(self.safe_value(response, 'return',
            {}), symbol, since, limit)
    <mask token>
    <mask token>

    def parse_orders(self, orders, market=None, since=None, limit=None,
        params={}):
        result = []
        ids = list(orders.keys())
        symbol = None
        if market is not None:
            symbol = market['symbol']
        for i in range(0, len(ids)):
            id = ids[i]
            order = self.extend({'id': id}, orders[id])
            result.append(self.extend(self.parse_order(order, market), params))
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

    def fetch_closed_orders(self, symbol=None, since=None, limit=None,
        params={}):
        orders = self.fetch_orders(symbol, since, limit, params)
        return self.filter_by(orders, 'status', 'closed')

    def fetch_my_trades(self, symbol=None, since=None, limit=None, params={}):
        self.load_markets()
        market = None
        request = {}
        if symbol is not None:
            market = self.market(symbol)
            request['pair'] = market['id']
        if limit is not None:
            request['count'] = int(limit)
        if since is not None:
            request['since'] = int(since / 1000)
        response = self.privatePostHistoryTrades(self.extend(request, params))
        trades = []
        if 'return' in response:
            trades = response['return']
        return self.parse_trades(trades, market, since, limit)
    <mask token>

    def parse_transaction_status(self, status):
        statuses = {'1': 'failed', '2': 'ok', '3': 'pending', '4': 'failed'}
        return self.safe_string(statuses, status, status)

    def parse_transaction(self, transaction, currency=None):
        timestamp = self.safe_timestamp(transaction, 'timestamp')
        type = self.safe_string(transaction, 'type')
        if type is not None:
            if type == 'Incoming':
                type = 'deposit'
            elif type == 'Withdraw':
                type = 'withdrawal'
        currencyId = self.safe_string(transaction, 'currency')
        code = self.safe_currency_code(currencyId, currency)
        status = self.parse_transaction_status(self.safe_string(transaction,
            'status'))
        return {'id': self.safe_string(transaction, 'id'), 'txid': self.
            safe_string(transaction, 'txid'), 'timestamp': timestamp,
            'datetime': self.iso8601(timestamp), 'address': self.
            safe_string(transaction, 'address'), 'type': type, 'amount':
            self.safe_float(transaction, 'amount'), 'currency': code,
            'status': status, 'fee': {'currency': code, 'cost': self.
            safe_float(transaction, 'commission'), 'rate': None}, 'info':
            transaction}

    def create_deposit_address(self, code, params={}):
        request = {'new': 1}
        response = self.fetch_deposit_address(code, self.extend(request,
            params))
        return response

    def fetch_deposit_address(self, code, params={}):
        self.load_markets()
        currency = self.currency(code)
        request = {'currency': currency['id']}
        response = self.dwapiPostDepositCryptoaddress(self.extend(request,
            params))
        result = self.safe_value(response, 'return', {})
        address = self.safe_string(result, 'address')
        self.check_address(address)
        return {'currency': code, 'address': address, 'tag': None, 'info':
            response}

    def withdraw(self, code, amount, address, tag=None, params={}):
        self.check_address(address)
        self.load_markets()
        currency = self.currency(code)
        commission = self.safe_value(params, 'commission')
        if commission is None:
            raise ArgumentsRequired(self.id +
                ' withdraw() requires a `commission`(withdrawal fee) parameter(string)'
                )
        params = self.omit(params, commission)
        request = {'currency': currency['id'], 'amount': float(amount),
            'address': address, 'commission': commission}
        if tag is not None:
            request['address'] += ':' + tag
        response = self.dwapiPostWithdrawCrypto(self.extend(request, params))
        data = self.safe_value(response, 'return', {})
        id = self.safe_string(data, 'transactionId')
        return {'info': response, 'id': id}

    def sign(self, path, api='public', method='GET', params={}, headers=
        None, body=None):
        url = self.urls['api'][api]
        query = self.omit(params, self.extract_params(path))
        if api == 'private' or api == 'dwapi':
            url += '/' + self.version + '/' + self.implode_params(path, params)
            self.check_required_credentials()
            nonce = self.nonce()
            body = self.urlencode(self.extend({'nonce': nonce}, query))
            signature = self.decode(self.hmac(self.encode(body), self.
                encode(self.secret), hashlib.sha512, 'base64'))
            headers = {'Content-Type': 'application/x-www-form-urlencoded',
                'Key': self.apiKey, 'Sign': signature}
        elif api == 'public':
            url += '/' + self.implode_params(path, params)
            if query:
                url += '?' + self.urlencode(query)
        else:
            url += '/' + self.implode_params(path, params)
            if method == 'GET':
                if query:
                    url += '?' + self.urlencode(query)
            elif query:
                body = self.json(query)
                headers = {'Content-Type': 'application/json'}
        return {'url': url, 'method': method, 'body': body, 'headers': headers}
    <mask token>

<mask token>


class dsx(Exchange):

    def describe(self):
        return self.deep_extend(super(dsx, self).describe(), {'id': 'dsx',
            'name': 'DSX', 'countries': ['UK'], 'rateLimit': 1500,
            'version': 'v3', 'has': {'cancelOrder': True, 'CORS': False,
            'createDepositAddress': True, 'createMarketOrder': False,
            'createOrder': True, 'fetchBalance': True, 'fetchClosedOrders':
            False, 'fetchDepositAddress': True, 'fetchMarkets': True,
            'fetchMyTrades': True, 'fetchOHLCV': True, 'fetchOpenOrders': 
            True, 'fetchOrder': True, 'fetchOrderBook': True,
            'fetchOrderBooks': True, 'fetchOrders': True, 'fetchTicker': 
            True, 'fetchTickers': True, 'fetchTransactions': True,
            'fetchTrades': True, 'withdraw': True}, 'urls': {'logo':
            'https://user-images.githubusercontent.com/51840849/76909626-cb2bb100-68bc-11ea-99e0-28ba54f04792.jpg'
            , 'api': {'public': 'https://dsxglobal.com/mapi', 'private':
            'https://dsxglobal.com/tapi', 'dwapi':
            'https://dsxglobal.com/dwapi'}, 'www': 'https://dsxglobal.com',
            'doc': ['https://dsxglobal.com/developers/publicApi']}, 'fees':
            {'trading': {'tierBased': True, 'percentage': True, 'maker': 
            0.15 / 100, 'taker': 0.25 / 100}}, 'timeframes': {'1m': 'm',
            '1h': 'h', '1d': 'd'}, 'api': {'public': {'get': [
            'barsFromMoment/{pair}/{period}/{start}', 'depth/{pair}',
            'info', 'lastBars/{pair}/{period}/{amount}',
            'periodBars/{pair}/{period}/{start}/{end}', 'ticker/{pair}',
            'trades/{pair}']}, 'private': {'post': ['info/account',
            'history/transactions', 'history/trades', 'history/orders',
            'orders', 'order/cancel', 'order/status', 'order/new', 'volume',
            'fees']}, 'dwapi': {'post': ['deposit/cryptoaddress',
            'withdraw/crypto', 'withdraw/fiat', 'withdraw/submit',
            'transaction/status']}}, 'exceptions': {'exact': {
            'Sign is invalid': AuthenticationError,
            'Order was rejected. Incorrect price.': InvalidOrder,
            "Order was rejected. You don't have enough money.":
            InsufficientFunds,
            'This method is blocked for your pair of keys':
            PermissionDenied}, 'broad': {'INVALID_PARAMETER': BadRequest,
            'Invalid pair name': ExchangeError, 'invalid api key':
            AuthenticationError, 'invalid sign': AuthenticationError,
            'api key dont have trade permission': AuthenticationError,
            'invalid parameter': InvalidOrder, 'invalid order':
            InvalidOrder, 'Requests too often': DDoSProtection,
            'not available': ExchangeNotAvailable, 'data unavailable':
            ExchangeNotAvailable, 'external service unavailable':
            ExchangeNotAvailable, 'nonce is invalid': InvalidNonce,
            'Incorrect volume': InvalidOrder}}, 'options': {
            'fetchTickersMaxLength': 250}, 'commonCurrencies': {'DSH': 'DASH'}}
            )

    def fetch_markets(self, params={}):
        response = self.publicGetInfo(params)
        markets = self.safe_value(response, 'pairs')
        keys = list(markets.keys())
        result = []
        for i in range(0, len(keys)):
            id = keys[i]
            market = markets[id]
            baseId = self.safe_string(market, 'base_currency')
            quoteId = self.safe_string(market, 'quoted_currency')
            base = self.safe_currency_code(baseId)
            quote = self.safe_currency_code(quoteId)
            symbol = base + '/' + quote
            precision = {'amount': self.safe_integer(market,
                'decimal_places'), 'price': self.safe_integer(market,
                'decimal_places')}
            amountLimits = {'min': self.safe_float(market, 'min_amount'),
                'max': self.safe_float(market, 'max_amount')}
            priceLimits = {'min': self.safe_float(market, 'min_price'),
                'max': self.safe_float(market, 'max_price')}
            costLimits = {'min': self.safe_float(market, 'min_total')}
            limits = {'amount': amountLimits, 'price': priceLimits, 'cost':
                costLimits}
            hidden = self.safe_integer(market, 'hidden')
            active = hidden == 0
            otherId = base.lower() + quote.lower()
            result.append({'id': id, 'otherId': otherId, 'symbol': symbol,
                'base': base, 'quote': quote, 'baseId': baseId, 'quoteId':
                quoteId, 'active': active, 'precision': precision, 'limits':
                limits, 'info': market})
        return result

    def fetch_balance(self, params={}):
        self.load_markets()
        response = self.privatePostInfoAccount()
        balances = self.safe_value(response, 'return')
        result = {'info': response}
        funds = self.safe_value(balances, 'funds')
        currencyIds = list(funds.keys())
        for i in range(0, len(currencyIds)):
            currencyId = currencyIds[i]
            code = self.safe_currency_code(currencyId)
            balance = self.safe_value(funds, currencyId, {})
            account = self.account()
            account['free'] = self.safe_float(balance, 'available')
            account['total'] = self.safe_float(balance, 'total')
            result[code] = account
        return self.parse_balance(result)

    def parse_ticker(self, ticker, market=None):
        timestamp = self.safe_timestamp(ticker, 'updated')
        symbol = None
        marketId = self.safe_string(ticker, 'pair')
        market = self.parse_market(marketId)
        if market is not None:
            symbol = market['symbol']
        average = self.safe_float(ticker, 'avg')
        if average is not None:
            if average > 0:
                average = 1 / average
        last = self.safe_float(ticker, 'last')
        return {'symbol': symbol, 'timestamp': timestamp, 'datetime': self.
            iso8601(timestamp), 'high': self.safe_float(ticker, 'high'),
            'low': self.safe_float(ticker, 'low'), 'bid': self.safe_float(
            ticker, 'buy'), 'bidVolume': None, 'ask': self.safe_float(
            ticker, 'sell'), 'askVolume': None, 'vwap': None, 'open': None,
            'close': last, 'last': last, 'previousClose': None, 'change':
            None, 'percentage': None, 'average': average, 'baseVolume':
            self.safe_float(ticker, 'vol'), 'quoteVolume': self.safe_float(
            ticker, 'vol_cur'), 'info': ticker}

    def parse_trade(self, trade, market=None):
        timestamp = self.safe_timestamp(trade, 'timestamp')
        side = self.safe_string(trade, 'type')
        if side == 'ask':
            side = 'sell'
        elif side == 'bid':
            side = 'buy'
        price = self.safe_float_2(trade, 'rate', 'price')
        id = self.safe_string_2(trade, 'number', 'id')
        orderId = self.safe_string(trade, 'orderId')
        marketId = self.safe_string(trade, 'pair')
        market = self.parse_market(marketId)
        symbol = None
        if market is not None:
            symbol = market['symbol']
        amount = self.safe_float_2(trade, 'amount', 'volume')
        type = 'limit'
        takerOrMaker = None
        fee = None
        feeCost = self.safe_float(trade, 'commission')
        if feeCost is not None:
            feeCurrencyId = self.safe_string(trade, 'commissionCurrency')
            feeCurrencyCode = self.safe_currency_code(feeCurrencyId)
            fee = {'cost': feeCost, 'currency': feeCurrencyCode}
        isYourOrder = self.safe_value(trade, 'is_your_order')
        if isYourOrder is not None:
            takerOrMaker = 'taker'
            if isYourOrder:
                takerOrMaker = 'maker'
            if fee is None:
                fee = self.calculate_fee(symbol, type, side, amount, price,
                    takerOrMaker)
        cost = None
        if price is not None:
            if amount is not None:
                cost = price * amount
        return {'id': id, 'order': orderId, 'timestamp': timestamp,
            'datetime': self.iso8601(timestamp), 'symbol': symbol, 'type':
            type, 'side': side, 'takerOrMaker': takerOrMaker, 'price':
            price, 'amount': amount, 'cost': cost, 'fee': fee, 'info': trade}

    def parse_trades(self, trades, market=None, since=None, limit=None,
        params={}):
        result = []
        if isinstance(trades, list):
            for i in range(0, len(trades)):
                result.append(self.parse_trade(trades[i], market))
        else:
            ids = list(trades.keys())
            for i in range(0, len(ids)):
                id = ids[i]
                trade = self.parse_trade(trades[id], market)
                result.append(self.extend(trade, {'id': id}, params))
        result = self.sort_by(result, 'timestamp')
        symbol = market['symbol'] if market is not None else None
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

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

    def fetch_order_book(self, symbol, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {'pair': market['id']}
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetDepthPair(self.extend(request, params))
        market_id_in_reponse = market['id'] in response
        if not market_id_in_reponse:
            raise ExchangeError(self.id + ' ' + market['symbol'] +
                ' order book is empty or not available')
        orderbook = response[market['id']]
        return self.parse_order_book(orderbook)

    def fetch_order_books(self, symbols=None, limit=None, params={}):
        self.load_markets()
        ids = None
        if symbols is None:
            ids = '-'.join(self.ids)
            if len(ids) > 2048:
                numIds = len(self.ids)
                raise ExchangeError(self.id + ' has ' + str(numIds) +
                    ' symbols exceeding max URL length, you are required to specify a list of symbols in the first argument to fetchOrderBooks'
                    )
        else:
            ids = self.market_ids(symbols)
            ids = '-'.join(ids)
        request = {'pair': ids}
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetDepthPair(self.extend(request, params))
        result = {}
        ids = list(response.keys())
        for i in range(0, len(ids)):
            id = ids[i]
            symbol = id
            if id in self.markets_by_id:
                market = self.markets_by_id[id]
                symbol = market['symbol']
            result[symbol] = self.parse_order_book(response[id])
        return result

    def fetch_tickers(self, symbols=None, params={}):
        self.load_markets()
        ids = self.ids
        if symbols is None:
            numIds = len(ids)
            ids = '-'.join(ids)
            maxLength = self.safe_integer(self.options,
                'fetchTickersMaxLength', 2048)
            if len(ids) > self.options['fetchTickersMaxLength']:
                raise ArgumentsRequired(self.id + ' has ' + str(numIds) +
                    ' markets exceeding max URL length for self endpoint(' +
                    str(maxLength) +
                    ' characters), please, specify a list of symbols of interest in the first argument to fetchTickers'
                    )
        else:
            ids = self.market_ids(symbols)
            ids = '-'.join(ids)
        request = {'pair': ids}
        tickers = self.publicGetTickerPair(self.extend(request, params))
        result = {}
        keys = list(tickers.keys())
        for k in range(0, len(keys)):
            id = keys[k]
            ticker = tickers[id]
            symbol = id
            market = None
            if id in self.markets_by_id:
                market = self.markets_by_id[id]
                symbol = market['symbol']
            result[symbol] = self.parse_ticker(ticker, market)
        return result

    def fetch_ticker(self, symbol, params={}):
        tickers = self.fetch_tickers([symbol], params)
        return tickers[symbol]

    def fetch_trades(self, symbol, since=None, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {'pair': market['id']}
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetTradesPair(self.extend(request, params))
        if isinstance(response, list):
            numElements = len(response)
            if numElements == 0:
                return []
        return self.parse_trades(response[market['id']], market, since, limit)

    def parse_ohlcv(self, ohlcv, market=None):
        return [self.safe_integer(ohlcv, 'timestamp'), self.safe_float(
            ohlcv, 'open'), self.safe_float(ohlcv, 'high'), self.safe_float
            (ohlcv, 'low'), self.safe_float(ohlcv, 'close'), self.
            safe_float(ohlcv, 'amount')]

    def fetch_ohlcv(self, symbol, timeframe='1m', since=None, limit=None,
        params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {'pair': market['id'], 'period': self.timeframes[timeframe]}
        method = 'publicGetLastBarsPairPeriodAmount'
        if since is None:
            if limit is None:
                limit = 100
            request['amount'] = limit
        else:
            method = 'publicGetPeriodBarsPairPeriodStartEnd'
            request['start'] = int(since / 1000)
            if limit is None:
                request['end'] = self.seconds()
            else:
                duration = self.parse_timeframe(timeframe) * 1000
                end = self.sum(since, duration * limit)
                request['end'] = int(end / 1000)
        response = getattr(self, method)(self.extend(request, params))
        candles = self.safe_value(response, market['id'], [])
        return self.parse_ohlcvs(candles, market, timeframe, since, limit)

    def create_order(self, symbol, type, side, amount, price=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        if type == 'market' and price is None:
            raise ArgumentsRequired(self.id +
                ' createOrder requires a price argument even for market orders, that is the worst price that you agree to fill your order for'
                )
        request = {'pair': market['id'], 'type': side, 'volume': self.
            amount_to_precision(symbol, amount), 'rate': self.
            price_to_precision(symbol, price), 'orderType': type}
        price = float(price)
        amount = float(amount)
        response = self.privatePostOrderNew(self.extend(request, params))
        status = 'open'
        filled = 0.0
        remaining = amount
        responseReturn = self.safe_value(response, 'return')
        id = self.safe_string_2(responseReturn, 'orderId', 'order_id')
        if id == '0':
            id = self.safe_string(responseReturn, 'initOrderId',
                'init_order_id')
            status = 'closed'
        filled = self.safe_float(responseReturn, 'received', 0.0)
        remaining = self.safe_float(responseReturn, 'remains', amount)
        timestamp = self.milliseconds()
        return {'info': response, 'id': id, 'timestamp': timestamp,
            'datetime': self.iso8601(timestamp), 'lastTradeTimestamp': None,
            'status': status, 'symbol': symbol, 'type': type, 'side': side,
            'price': price, 'cost': price * filled, 'amount': amount,
            'remaining': remaining, 'filled': filled, 'fee': None}

    def parse_order_status(self, status):
        statuses = {'0': 'open', '1': 'closed', '2': 'canceled', '3':
            'canceling', '7': 'canceled'}
        return self.safe_string(statuses, status, status)

    def parse_market(self, id):
        if id in self.markets_by_id:
            return self.markets_by_id[id]
        else:
            markets_by_other_id = self.safe_value(self.options,
                'markets_by_other_id')
            if markets_by_other_id is None:
                self.options['markets_by_other_id'] = self.index_by(self.
                    markets, 'otherId')
                markets_by_other_id = self.options['markets_by_other_id']
            if id in markets_by_other_id:
                return markets_by_other_id[id]
        return None

    def parse_order(self, order, market=None):
        id = self.safe_string(order, 'id')
        status = self.parse_order_status(self.safe_string(order, 'status'))
        timestamp = self.safe_timestamp(order, 'timestampCreated')
        marketId = self.safe_string(order, 'pair')
        market = self.parse_market(marketId)
        symbol = None
        if market is not None:
            symbol = market['symbol']
        remaining = self.safe_float(order, 'remainingVolume')
        amount = self.safe_float(order, 'volume')
        price = self.safe_float(order, 'rate')
        filled = None
        cost = None
        if amount is not None:
            if remaining is not None:
                filled = amount - remaining
                cost = price * filled
        orderType = self.safe_string(order, 'orderType')
        side = self.safe_string(order, 'type')
        fee = None
        deals = self.safe_value(order, 'deals', [])
        numDeals = len(deals)
        trades = None
        lastTradeTimestamp = None
        if numDeals > 0:
            trades = self.parse_trades(deals)
            feeCost = None
            feeCurrency = None
            for i in range(0, len(trades)):
                trade = trades[i]
                if feeCost is None:
                    feeCost = 0
                feeCost = self.sum(feeCost, trade['fee']['cost'])
                feeCurrency = trade['fee']['currency']
                lastTradeTimestamp = trade['timestamp']
            if feeCost is not None:
                fee = {'cost': feeCost, 'currency': feeCurrency}
        return {'info': order, 'id': id, 'clientOrderId': None, 'symbol':
            symbol, 'timestamp': timestamp, 'datetime': self.iso8601(
            timestamp), 'lastTradeTimestamp': lastTradeTimestamp, 'type':
            orderType, 'side': side, 'price': price, 'cost': cost, 'amount':
            amount, 'remaining': remaining, 'filled': filled, 'status':
            status, 'fee': fee, 'trades': trades}

    def fetch_order(self, id, symbol=None, params={}):
        self.load_markets()
        request = {'orderId': int(id)}
        response = self.privatePostOrderStatus(self.extend(request, params))
        return self.parse_order(self.extend({'id': id}, response['return']))

    def parse_orders_by_id(self, orders, symbol=None, since=None, limit=None):
        ids = list(orders.keys())
        result = []
        for i in range(0, len(ids)):
            id = ids[i]
            order = self.parse_order(self.extend({'id': str(id)}, orders[id]))
            result.append(order)
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

    def fetch_open_orders(self, symbol=None, since=None, limit=None, params={}
        ):
        self.load_markets()
        request = {}
        response = self.privatePostOrders(self.extend(request, params))
        return self.parse_orders_by_id(self.safe_value(response, 'return',
            {}), symbol, since, limit)
    <mask token>
    <mask token>

    def parse_orders(self, orders, market=None, since=None, limit=None,
        params={}):
        result = []
        ids = list(orders.keys())
        symbol = None
        if market is not None:
            symbol = market['symbol']
        for i in range(0, len(ids)):
            id = ids[i]
            order = self.extend({'id': id}, orders[id])
            result.append(self.extend(self.parse_order(order, market), params))
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

    def fetch_closed_orders(self, symbol=None, since=None, limit=None,
        params={}):
        orders = self.fetch_orders(symbol, since, limit, params)
        return self.filter_by(orders, 'status', 'closed')

    def fetch_my_trades(self, symbol=None, since=None, limit=None, params={}):
        self.load_markets()
        market = None
        request = {}
        if symbol is not None:
            market = self.market(symbol)
            request['pair'] = market['id']
        if limit is not None:
            request['count'] = int(limit)
        if since is not None:
            request['since'] = int(since / 1000)
        response = self.privatePostHistoryTrades(self.extend(request, params))
        trades = []
        if 'return' in response:
            trades = response['return']
        return self.parse_trades(trades, market, since, limit)
    <mask token>

    def parse_transaction_status(self, status):
        statuses = {'1': 'failed', '2': 'ok', '3': 'pending', '4': 'failed'}
        return self.safe_string(statuses, status, status)

    def parse_transaction(self, transaction, currency=None):
        timestamp = self.safe_timestamp(transaction, 'timestamp')
        type = self.safe_string(transaction, 'type')
        if type is not None:
            if type == 'Incoming':
                type = 'deposit'
            elif type == 'Withdraw':
                type = 'withdrawal'
        currencyId = self.safe_string(transaction, 'currency')
        code = self.safe_currency_code(currencyId, currency)
        status = self.parse_transaction_status(self.safe_string(transaction,
            'status'))
        return {'id': self.safe_string(transaction, 'id'), 'txid': self.
            safe_string(transaction, 'txid'), 'timestamp': timestamp,
            'datetime': self.iso8601(timestamp), 'address': self.
            safe_string(transaction, 'address'), 'type': type, 'amount':
            self.safe_float(transaction, 'amount'), 'currency': code,
            'status': status, 'fee': {'currency': code, 'cost': self.
            safe_float(transaction, 'commission'), 'rate': None}, 'info':
            transaction}

    def create_deposit_address(self, code, params={}):
        request = {'new': 1}
        response = self.fetch_deposit_address(code, self.extend(request,
            params))
        return response

    def fetch_deposit_address(self, code, params={}):
        self.load_markets()
        currency = self.currency(code)
        request = {'currency': currency['id']}
        response = self.dwapiPostDepositCryptoaddress(self.extend(request,
            params))
        result = self.safe_value(response, 'return', {})
        address = self.safe_string(result, 'address')
        self.check_address(address)
        return {'currency': code, 'address': address, 'tag': None, 'info':
            response}

    def withdraw(self, code, amount, address, tag=None, params={}):
        self.check_address(address)
        self.load_markets()
        currency = self.currency(code)
        commission = self.safe_value(params, 'commission')
        if commission is None:
            raise ArgumentsRequired(self.id +
                ' withdraw() requires a `commission`(withdrawal fee) parameter(string)'
                )
        params = self.omit(params, commission)
        request = {'currency': currency['id'], 'amount': float(amount),
            'address': address, 'commission': commission}
        if tag is not None:
            request['address'] += ':' + tag
        response = self.dwapiPostWithdrawCrypto(self.extend(request, params))
        data = self.safe_value(response, 'return', {})
        id = self.safe_string(data, 'transactionId')
        return {'info': response, 'id': id}

    def sign(self, path, api='public', method='GET', params={}, headers=
        None, body=None):
        url = self.urls['api'][api]
        query = self.omit(params, self.extract_params(path))
        if api == 'private' or api == 'dwapi':
            url += '/' + self.version + '/' + self.implode_params(path, params)
            self.check_required_credentials()
            nonce = self.nonce()
            body = self.urlencode(self.extend({'nonce': nonce}, query))
            signature = self.decode(self.hmac(self.encode(body), self.
                encode(self.secret), hashlib.sha512, 'base64'))
            headers = {'Content-Type': 'application/x-www-form-urlencoded',
                'Key': self.apiKey, 'Sign': signature}
        elif api == 'public':
            url += '/' + self.implode_params(path, params)
            if query:
                url += '?' + self.urlencode(query)
        else:
            url += '/' + self.implode_params(path, params)
            if method == 'GET':
                if query:
                    url += '?' + self.urlencode(query)
            elif query:
                body = self.json(query)
                headers = {'Content-Type': 'application/json'}
        return {'url': url, 'method': method, 'body': body, 'headers': headers}
    <mask token>

<mask token>


class dsx(Exchange):

    def describe(self):
        return self.deep_extend(super(dsx, self).describe(), {'id': 'dsx',
            'name': 'DSX', 'countries': ['UK'], 'rateLimit': 1500,
            'version': 'v3', 'has': {'cancelOrder': True, 'CORS': False,
            'createDepositAddress': True, 'createMarketOrder': False,
            'createOrder': True, 'fetchBalance': True, 'fetchClosedOrders':
            False, 'fetchDepositAddress': True, 'fetchMarkets': True,
            'fetchMyTrades': True, 'fetchOHLCV': True, 'fetchOpenOrders': 
            True, 'fetchOrder': True, 'fetchOrderBook': True,
            'fetchOrderBooks': True, 'fetchOrders': True, 'fetchTicker': 
            True, 'fetchTickers': True, 'fetchTransactions': True,
            'fetchTrades': True, 'withdraw': True}, 'urls': {'logo':
            'https://user-images.githubusercontent.com/51840849/76909626-cb2bb100-68bc-11ea-99e0-28ba54f04792.jpg'
            , 'api': {'public': 'https://dsxglobal.com/mapi', 'private':
            'https://dsxglobal.com/tapi', 'dwapi':
            'https://dsxglobal.com/dwapi'}, 'www': 'https://dsxglobal.com',
            'doc': ['https://dsxglobal.com/developers/publicApi']}, 'fees':
            {'trading': {'tierBased': True, 'percentage': True, 'maker': 
            0.15 / 100, 'taker': 0.25 / 100}}, 'timeframes': {'1m': 'm',
            '1h': 'h', '1d': 'd'}, 'api': {'public': {'get': [
            'barsFromMoment/{pair}/{period}/{start}', 'depth/{pair}',
            'info', 'lastBars/{pair}/{period}/{amount}',
            'periodBars/{pair}/{period}/{start}/{end}', 'ticker/{pair}',
            'trades/{pair}']}, 'private': {'post': ['info/account',
            'history/transactions', 'history/trades', 'history/orders',
            'orders', 'order/cancel', 'order/status', 'order/new', 'volume',
            'fees']}, 'dwapi': {'post': ['deposit/cryptoaddress',
            'withdraw/crypto', 'withdraw/fiat', 'withdraw/submit',
            'transaction/status']}}, 'exceptions': {'exact': {
            'Sign is invalid': AuthenticationError,
            'Order was rejected. Incorrect price.': InvalidOrder,
            "Order was rejected. You don't have enough money.":
            InsufficientFunds,
            'This method is blocked for your pair of keys':
            PermissionDenied}, 'broad': {'INVALID_PARAMETER': BadRequest,
            'Invalid pair name': ExchangeError, 'invalid api key':
            AuthenticationError, 'invalid sign': AuthenticationError,
            'api key dont have trade permission': AuthenticationError,
            'invalid parameter': InvalidOrder, 'invalid order':
            InvalidOrder, 'Requests too often': DDoSProtection,
            'not available': ExchangeNotAvailable, 'data unavailable':
            ExchangeNotAvailable, 'external service unavailable':
            ExchangeNotAvailable, 'nonce is invalid': InvalidNonce,
            'Incorrect volume': InvalidOrder}}, 'options': {
            'fetchTickersMaxLength': 250}, 'commonCurrencies': {'DSH': 'DASH'}}
            )

    def fetch_markets(self, params={}):
        response = self.publicGetInfo(params)
        markets = self.safe_value(response, 'pairs')
        keys = list(markets.keys())
        result = []
        for i in range(0, len(keys)):
            id = keys[i]
            market = markets[id]
            baseId = self.safe_string(market, 'base_currency')
            quoteId = self.safe_string(market, 'quoted_currency')
            base = self.safe_currency_code(baseId)
            quote = self.safe_currency_code(quoteId)
            symbol = base + '/' + quote
            precision = {'amount': self.safe_integer(market,
                'decimal_places'), 'price': self.safe_integer(market,
                'decimal_places')}
            amountLimits = {'min': self.safe_float(market, 'min_amount'),
                'max': self.safe_float(market, 'max_amount')}
            priceLimits = {'min': self.safe_float(market, 'min_price'),
                'max': self.safe_float(market, 'max_price')}
            costLimits = {'min': self.safe_float(market, 'min_total')}
            limits = {'amount': amountLimits, 'price': priceLimits, 'cost':
                costLimits}
            hidden = self.safe_integer(market, 'hidden')
            active = hidden == 0
            otherId = base.lower() + quote.lower()
            result.append({'id': id, 'otherId': otherId, 'symbol': symbol,
                'base': base, 'quote': quote, 'baseId': baseId, 'quoteId':
                quoteId, 'active': active, 'precision': precision, 'limits':
                limits, 'info': market})
        return result

    def fetch_balance(self, params={}):
        self.load_markets()
        response = self.privatePostInfoAccount()
        balances = self.safe_value(response, 'return')
        result = {'info': response}
        funds = self.safe_value(balances, 'funds')
        currencyIds = list(funds.keys())
        for i in range(0, len(currencyIds)):
            currencyId = currencyIds[i]
            code = self.safe_currency_code(currencyId)
            balance = self.safe_value(funds, currencyId, {})
            account = self.account()
            account['free'] = self.safe_float(balance, 'available')
            account['total'] = self.safe_float(balance, 'total')
            result[code] = account
        return self.parse_balance(result)

    def parse_ticker(self, ticker, market=None):
        timestamp = self.safe_timestamp(ticker, 'updated')
        symbol = None
        marketId = self.safe_string(ticker, 'pair')
        market = self.parse_market(marketId)
        if market is not None:
            symbol = market['symbol']
        average = self.safe_float(ticker, 'avg')
        if average is not None:
            if average > 0:
                average = 1 / average
        last = self.safe_float(ticker, 'last')
        return {'symbol': symbol, 'timestamp': timestamp, 'datetime': self.
            iso8601(timestamp), 'high': self.safe_float(ticker, 'high'),
            'low': self.safe_float(ticker, 'low'), 'bid': self.safe_float(
            ticker, 'buy'), 'bidVolume': None, 'ask': self.safe_float(
            ticker, 'sell'), 'askVolume': None, 'vwap': None, 'open': None,
            'close': last, 'last': last, 'previousClose': None, 'change':
            None, 'percentage': None, 'average': average, 'baseVolume':
            self.safe_float(ticker, 'vol'), 'quoteVolume': self.safe_float(
            ticker, 'vol_cur'), 'info': ticker}

    def parse_trade(self, trade, market=None):
        timestamp = self.safe_timestamp(trade, 'timestamp')
        side = self.safe_string(trade, 'type')
        if side == 'ask':
            side = 'sell'
        elif side == 'bid':
            side = 'buy'
        price = self.safe_float_2(trade, 'rate', 'price')
        id = self.safe_string_2(trade, 'number', 'id')
        orderId = self.safe_string(trade, 'orderId')
        marketId = self.safe_string(trade, 'pair')
        market = self.parse_market(marketId)
        symbol = None
        if market is not None:
            symbol = market['symbol']
        amount = self.safe_float_2(trade, 'amount', 'volume')
        type = 'limit'
        takerOrMaker = None
        fee = None
        feeCost = self.safe_float(trade, 'commission')
        if feeCost is not None:
            feeCurrencyId = self.safe_string(trade, 'commissionCurrency')
            feeCurrencyCode = self.safe_currency_code(feeCurrencyId)
            fee = {'cost': feeCost, 'currency': feeCurrencyCode}
        isYourOrder = self.safe_value(trade, 'is_your_order')
        if isYourOrder is not None:
            takerOrMaker = 'taker'
            if isYourOrder:
                takerOrMaker = 'maker'
            if fee is None:
                fee = self.calculate_fee(symbol, type, side, amount, price,
                    takerOrMaker)
        cost = None
        if price is not None:
            if amount is not None:
                cost = price * amount
        return {'id': id, 'order': orderId, 'timestamp': timestamp,
            'datetime': self.iso8601(timestamp), 'symbol': symbol, 'type':
            type, 'side': side, 'takerOrMaker': takerOrMaker, 'price':
            price, 'amount': amount, 'cost': cost, 'fee': fee, 'info': trade}

    def parse_trades(self, trades, market=None, since=None, limit=None,
        params={}):
        result = []
        if isinstance(trades, list):
            for i in range(0, len(trades)):
                result.append(self.parse_trade(trades[i], market))
        else:
            ids = list(trades.keys())
            for i in range(0, len(ids)):
                id = ids[i]
                trade = self.parse_trade(trades[id], market)
                result.append(self.extend(trade, {'id': id}, params))
        result = self.sort_by(result, 'timestamp')
        symbol = market['symbol'] if market is not None else None
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

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

    def fetch_order_book(self, symbol, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {'pair': market['id']}
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetDepthPair(self.extend(request, params))
        market_id_in_reponse = market['id'] in response
        if not market_id_in_reponse:
            raise ExchangeError(self.id + ' ' + market['symbol'] +
                ' order book is empty or not available')
        orderbook = response[market['id']]
        return self.parse_order_book(orderbook)

    def fetch_order_books(self, symbols=None, limit=None, params={}):
        self.load_markets()
        ids = None
        if symbols is None:
            ids = '-'.join(self.ids)
            if len(ids) > 2048:
                numIds = len(self.ids)
                raise ExchangeError(self.id + ' has ' + str(numIds) +
                    ' symbols exceeding max URL length, you are required to specify a list of symbols in the first argument to fetchOrderBooks'
                    )
        else:
            ids = self.market_ids(symbols)
            ids = '-'.join(ids)
        request = {'pair': ids}
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetDepthPair(self.extend(request, params))
        result = {}
        ids = list(response.keys())
        for i in range(0, len(ids)):
            id = ids[i]
            symbol = id
            if id in self.markets_by_id:
                market = self.markets_by_id[id]
                symbol = market['symbol']
            result[symbol] = self.parse_order_book(response[id])
        return result

    def fetch_tickers(self, symbols=None, params={}):
        self.load_markets()
        ids = self.ids
        if symbols is None:
            numIds = len(ids)
            ids = '-'.join(ids)
            maxLength = self.safe_integer(self.options,
                'fetchTickersMaxLength', 2048)
            if len(ids) > self.options['fetchTickersMaxLength']:
                raise ArgumentsRequired(self.id + ' has ' + str(numIds) +
                    ' markets exceeding max URL length for self endpoint(' +
                    str(maxLength) +
                    ' characters), please, specify a list of symbols of interest in the first argument to fetchTickers'
                    )
        else:
            ids = self.market_ids(symbols)
            ids = '-'.join(ids)
        request = {'pair': ids}
        tickers = self.publicGetTickerPair(self.extend(request, params))
        result = {}
        keys = list(tickers.keys())
        for k in range(0, len(keys)):
            id = keys[k]
            ticker = tickers[id]
            symbol = id
            market = None
            if id in self.markets_by_id:
                market = self.markets_by_id[id]
                symbol = market['symbol']
            result[symbol] = self.parse_ticker(ticker, market)
        return result

    def fetch_ticker(self, symbol, params={}):
        tickers = self.fetch_tickers([symbol], params)
        return tickers[symbol]

    def fetch_trades(self, symbol, since=None, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {'pair': market['id']}
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetTradesPair(self.extend(request, params))
        if isinstance(response, list):
            numElements = len(response)
            if numElements == 0:
                return []
        return self.parse_trades(response[market['id']], market, since, limit)

    def parse_ohlcv(self, ohlcv, market=None):
        return [self.safe_integer(ohlcv, 'timestamp'), self.safe_float(
            ohlcv, 'open'), self.safe_float(ohlcv, 'high'), self.safe_float
            (ohlcv, 'low'), self.safe_float(ohlcv, 'close'), self.
            safe_float(ohlcv, 'amount')]

    def fetch_ohlcv(self, symbol, timeframe='1m', since=None, limit=None,
        params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {'pair': market['id'], 'period': self.timeframes[timeframe]}
        method = 'publicGetLastBarsPairPeriodAmount'
        if since is None:
            if limit is None:
                limit = 100
            request['amount'] = limit
        else:
            method = 'publicGetPeriodBarsPairPeriodStartEnd'
            request['start'] = int(since / 1000)
            if limit is None:
                request['end'] = self.seconds()
            else:
                duration = self.parse_timeframe(timeframe) * 1000
                end = self.sum(since, duration * limit)
                request['end'] = int(end / 1000)
        response = getattr(self, method)(self.extend(request, params))
        candles = self.safe_value(response, market['id'], [])
        return self.parse_ohlcvs(candles, market, timeframe, since, limit)

    def create_order(self, symbol, type, side, amount, price=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        if type == 'market' and price is None:
            raise ArgumentsRequired(self.id +
                ' createOrder requires a price argument even for market orders, that is the worst price that you agree to fill your order for'
                )
        request = {'pair': market['id'], 'type': side, 'volume': self.
            amount_to_precision(symbol, amount), 'rate': self.
            price_to_precision(symbol, price), 'orderType': type}
        price = float(price)
        amount = float(amount)
        response = self.privatePostOrderNew(self.extend(request, params))
        status = 'open'
        filled = 0.0
        remaining = amount
        responseReturn = self.safe_value(response, 'return')
        id = self.safe_string_2(responseReturn, 'orderId', 'order_id')
        if id == '0':
            id = self.safe_string(responseReturn, 'initOrderId',
                'init_order_id')
            status = 'closed'
        filled = self.safe_float(responseReturn, 'received', 0.0)
        remaining = self.safe_float(responseReturn, 'remains', amount)
        timestamp = self.milliseconds()
        return {'info': response, 'id': id, 'timestamp': timestamp,
            'datetime': self.iso8601(timestamp), 'lastTradeTimestamp': None,
            'status': status, 'symbol': symbol, 'type': type, 'side': side,
            'price': price, 'cost': price * filled, 'amount': amount,
            'remaining': remaining, 'filled': filled, 'fee': None}

    def parse_order_status(self, status):
        statuses = {'0': 'open', '1': 'closed', '2': 'canceled', '3':
            'canceling', '7': 'canceled'}
        return self.safe_string(statuses, status, status)

    def parse_market(self, id):
        if id in self.markets_by_id:
            return self.markets_by_id[id]
        else:
            markets_by_other_id = self.safe_value(self.options,
                'markets_by_other_id')
            if markets_by_other_id is None:
                self.options['markets_by_other_id'] = self.index_by(self.
                    markets, 'otherId')
                markets_by_other_id = self.options['markets_by_other_id']
            if id in markets_by_other_id:
                return markets_by_other_id[id]
        return None

    def parse_order(self, order, market=None):
        id = self.safe_string(order, 'id')
        status = self.parse_order_status(self.safe_string(order, 'status'))
        timestamp = self.safe_timestamp(order, 'timestampCreated')
        marketId = self.safe_string(order, 'pair')
        market = self.parse_market(marketId)
        symbol = None
        if market is not None:
            symbol = market['symbol']
        remaining = self.safe_float(order, 'remainingVolume')
        amount = self.safe_float(order, 'volume')
        price = self.safe_float(order, 'rate')
        filled = None
        cost = None
        if amount is not None:
            if remaining is not None:
                filled = amount - remaining
                cost = price * filled
        orderType = self.safe_string(order, 'orderType')
        side = self.safe_string(order, 'type')
        fee = None
        deals = self.safe_value(order, 'deals', [])
        numDeals = len(deals)
        trades = None
        lastTradeTimestamp = None
        if numDeals > 0:
            trades = self.parse_trades(deals)
            feeCost = None
            feeCurrency = None
            for i in range(0, len(trades)):
                trade = trades[i]
                if feeCost is None:
                    feeCost = 0
                feeCost = self.sum(feeCost, trade['fee']['cost'])
                feeCurrency = trade['fee']['currency']
                lastTradeTimestamp = trade['timestamp']
            if feeCost is not None:
                fee = {'cost': feeCost, 'currency': feeCurrency}
        return {'info': order, 'id': id, 'clientOrderId': None, 'symbol':
            symbol, 'timestamp': timestamp, 'datetime': self.iso8601(
            timestamp), 'lastTradeTimestamp': lastTradeTimestamp, 'type':
            orderType, 'side': side, 'price': price, 'cost': cost, 'amount':
            amount, 'remaining': remaining, 'filled': filled, 'status':
            status, 'fee': fee, 'trades': trades}

    def fetch_order(self, id, symbol=None, params={}):
        self.load_markets()
        request = {'orderId': int(id)}
        response = self.privatePostOrderStatus(self.extend(request, params))
        return self.parse_order(self.extend({'id': id}, response['return']))

    def parse_orders_by_id(self, orders, symbol=None, since=None, limit=None):
        ids = list(orders.keys())
        result = []
        for i in range(0, len(ids)):
            id = ids[i]
            order = self.parse_order(self.extend({'id': str(id)}, orders[id]))
            result.append(order)
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

    def fetch_open_orders(self, symbol=None, since=None, limit=None, params={}
        ):
        self.load_markets()
        request = {}
        response = self.privatePostOrders(self.extend(request, params))
        return self.parse_orders_by_id(self.safe_value(response, 'return',
            {}), symbol, since, limit)
    <mask token>

    def cancel_order(self, id, symbol=None, params={}):
        self.load_markets()
        request = {'orderId': id}
        response = self.privatePostOrderCancel(self.extend(request, params))
        if id in self.orders:
            self.orders[id]['status'] = 'canceled'
        return response

    def parse_orders(self, orders, market=None, since=None, limit=None,
        params={}):
        result = []
        ids = list(orders.keys())
        symbol = None
        if market is not None:
            symbol = market['symbol']
        for i in range(0, len(ids)):
            id = ids[i]
            order = self.extend({'id': id}, orders[id])
            result.append(self.extend(self.parse_order(order, market), params))
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

    def fetch_closed_orders(self, symbol=None, since=None, limit=None,
        params={}):
        orders = self.fetch_orders(symbol, since, limit, params)
        return self.filter_by(orders, 'status', 'closed')

    def fetch_my_trades(self, symbol=None, since=None, limit=None, params={}):
        self.load_markets()
        market = None
        request = {}
        if symbol is not None:
            market = self.market(symbol)
            request['pair'] = market['id']
        if limit is not None:
            request['count'] = int(limit)
        if since is not None:
            request['since'] = int(since / 1000)
        response = self.privatePostHistoryTrades(self.extend(request, params))
        trades = []
        if 'return' in response:
            trades = response['return']
        return self.parse_trades(trades, market, since, limit)
    <mask token>

    def parse_transaction_status(self, status):
        statuses = {'1': 'failed', '2': 'ok', '3': 'pending', '4': 'failed'}
        return self.safe_string(statuses, status, status)

    def parse_transaction(self, transaction, currency=None):
        timestamp = self.safe_timestamp(transaction, 'timestamp')
        type = self.safe_string(transaction, 'type')
        if type is not None:
            if type == 'Incoming':
                type = 'deposit'
            elif type == 'Withdraw':
                type = 'withdrawal'
        currencyId = self.safe_string(transaction, 'currency')
        code = self.safe_currency_code(currencyId, currency)
        status = self.parse_transaction_status(self.safe_string(transaction,
            'status'))
        return {'id': self.safe_string(transaction, 'id'), 'txid': self.
            safe_string(transaction, 'txid'), 'timestamp': timestamp,
            'datetime': self.iso8601(timestamp), 'address': self.
            safe_string(transaction, 'address'), 'type': type, 'amount':
            self.safe_float(transaction, 'amount'), 'currency': code,
            'status': status, 'fee': {'currency': code, 'cost': self.
            safe_float(transaction, 'commission'), 'rate': None}, 'info':
            transaction}

    def create_deposit_address(self, code, params={}):
        request = {'new': 1}
        response = self.fetch_deposit_address(code, self.extend(request,
            params))
        return response

    def fetch_deposit_address(self, code, params={}):
        self.load_markets()
        currency = self.currency(code)
        request = {'currency': currency['id']}
        response = self.dwapiPostDepositCryptoaddress(self.extend(request,
            params))
        result = self.safe_value(response, 'return', {})
        address = self.safe_string(result, 'address')
        self.check_address(address)
        return {'currency': code, 'address': address, 'tag': None, 'info':
            response}

    def withdraw(self, code, amount, address, tag=None, params={}):
        self.check_address(address)
        self.load_markets()
        currency = self.currency(code)
        commission = self.safe_value(params, 'commission')
        if commission is None:
            raise ArgumentsRequired(self.id +
                ' withdraw() requires a `commission`(withdrawal fee) parameter(string)'
                )
        params = self.omit(params, commission)
        request = {'currency': currency['id'], 'amount': float(amount),
            'address': address, 'commission': commission}
        if tag is not None:
            request['address'] += ':' + tag
        response = self.dwapiPostWithdrawCrypto(self.extend(request, params))
        data = self.safe_value(response, 'return', {})
        id = self.safe_string(data, 'transactionId')
        return {'info': response, 'id': id}

    def sign(self, path, api='public', method='GET', params={}, headers=
        None, body=None):
        url = self.urls['api'][api]
        query = self.omit(params, self.extract_params(path))
        if api == 'private' or api == 'dwapi':
            url += '/' + self.version + '/' + self.implode_params(path, params)
            self.check_required_credentials()
            nonce = self.nonce()
            body = self.urlencode(self.extend({'nonce': nonce}, query))
            signature = self.decode(self.hmac(self.encode(body), self.
                encode(self.secret), hashlib.sha512, 'base64'))
            headers = {'Content-Type': 'application/x-www-form-urlencoded',
                'Key': self.apiKey, 'Sign': signature}
        elif api == 'public':
            url += '/' + self.implode_params(path, params)
            if query:
                url += '?' + self.urlencode(query)
        else:
            url += '/' + self.implode_params(path, params)
            if method == 'GET':
                if query:
                    url += '?' + self.urlencode(query)
            elif query:
                body = self.json(query)
                headers = {'Content-Type': 'application/json'}
        return {'url': url, 'method': method, 'body': body, 'headers': headers}
    <mask token>

from ccxt.base.exchange import Exchange
try:
    basestring
except NameError:
    basestring = str
import hashlib
from ccxt.base.errors import ExchangeError
from ccxt.base.errors import AuthenticationError
from ccxt.base.errors import PermissionDenied
from ccxt.base.errors import ArgumentsRequired
from ccxt.base.errors import BadRequest
from ccxt.base.errors import InsufficientFunds
from ccxt.base.errors import InvalidOrder
from ccxt.base.errors import DDoSProtection
from ccxt.base.errors import ExchangeNotAvailable
from ccxt.base.errors import InvalidNonce


class dsx(Exchange):

    def describe(self):
        return self.deep_extend(super(dsx, self).describe(), {'id': 'dsx',
            'name': 'DSX', 'countries': ['UK'], 'rateLimit': 1500,
            'version': 'v3', 'has': {'cancelOrder': True, 'CORS': False,
            'createDepositAddress': True, 'createMarketOrder': False,
            'createOrder': True, 'fetchBalance': True, 'fetchClosedOrders':
            False, 'fetchDepositAddress': True, 'fetchMarkets': True,
            'fetchMyTrades': True, 'fetchOHLCV': True, 'fetchOpenOrders': 
            True, 'fetchOrder': True, 'fetchOrderBook': True,
            'fetchOrderBooks': True, 'fetchOrders': True, 'fetchTicker': 
            True, 'fetchTickers': True, 'fetchTransactions': True,
            'fetchTrades': True, 'withdraw': True}, 'urls': {'logo':
            'https://user-images.githubusercontent.com/51840849/76909626-cb2bb100-68bc-11ea-99e0-28ba54f04792.jpg'
            , 'api': {'public': 'https://dsxglobal.com/mapi', 'private':
            'https://dsxglobal.com/tapi', 'dwapi':
            'https://dsxglobal.com/dwapi'}, 'www': 'https://dsxglobal.com',
            'doc': ['https://dsxglobal.com/developers/publicApi']}, 'fees':
            {'trading': {'tierBased': True, 'percentage': True, 'maker': 
            0.15 / 100, 'taker': 0.25 / 100}}, 'timeframes': {'1m': 'm',
            '1h': 'h', '1d': 'd'}, 'api': {'public': {'get': [
            'barsFromMoment/{pair}/{period}/{start}', 'depth/{pair}',
            'info', 'lastBars/{pair}/{period}/{amount}',
            'periodBars/{pair}/{period}/{start}/{end}', 'ticker/{pair}',
            'trades/{pair}']}, 'private': {'post': ['info/account',
            'history/transactions', 'history/trades', 'history/orders',
            'orders', 'order/cancel', 'order/status', 'order/new', 'volume',
            'fees']}, 'dwapi': {'post': ['deposit/cryptoaddress',
            'withdraw/crypto', 'withdraw/fiat', 'withdraw/submit',
            'transaction/status']}}, 'exceptions': {'exact': {
            'Sign is invalid': AuthenticationError,
            'Order was rejected. Incorrect price.': InvalidOrder,
            "Order was rejected. You don't have enough money.":
            InsufficientFunds,
            'This method is blocked for your pair of keys':
            PermissionDenied}, 'broad': {'INVALID_PARAMETER': BadRequest,
            'Invalid pair name': ExchangeError, 'invalid api key':
            AuthenticationError, 'invalid sign': AuthenticationError,
            'api key dont have trade permission': AuthenticationError,
            'invalid parameter': InvalidOrder, 'invalid order':
            InvalidOrder, 'Requests too often': DDoSProtection,
            'not available': ExchangeNotAvailable, 'data unavailable':
            ExchangeNotAvailable, 'external service unavailable':
            ExchangeNotAvailable, 'nonce is invalid': InvalidNonce,
            'Incorrect volume': InvalidOrder}}, 'options': {
            'fetchTickersMaxLength': 250}, 'commonCurrencies': {'DSH': 'DASH'}}
            )

    def fetch_markets(self, params={}):
        response = self.publicGetInfo(params)
        markets = self.safe_value(response, 'pairs')
        keys = list(markets.keys())
        result = []
        for i in range(0, len(keys)):
            id = keys[i]
            market = markets[id]
            baseId = self.safe_string(market, 'base_currency')
            quoteId = self.safe_string(market, 'quoted_currency')
            base = self.safe_currency_code(baseId)
            quote = self.safe_currency_code(quoteId)
            symbol = base + '/' + quote
            precision = {'amount': self.safe_integer(market,
                'decimal_places'), 'price': self.safe_integer(market,
                'decimal_places')}
            amountLimits = {'min': self.safe_float(market, 'min_amount'),
                'max': self.safe_float(market, 'max_amount')}
            priceLimits = {'min': self.safe_float(market, 'min_price'),
                'max': self.safe_float(market, 'max_price')}
            costLimits = {'min': self.safe_float(market, 'min_total')}
            limits = {'amount': amountLimits, 'price': priceLimits, 'cost':
                costLimits}
            hidden = self.safe_integer(market, 'hidden')
            active = hidden == 0
            otherId = base.lower() + quote.lower()
            result.append({'id': id, 'otherId': otherId, 'symbol': symbol,
                'base': base, 'quote': quote, 'baseId': baseId, 'quoteId':
                quoteId, 'active': active, 'precision': precision, 'limits':
                limits, 'info': market})
        return result

    def fetch_balance(self, params={}):
        self.load_markets()
        response = self.privatePostInfoAccount()
        balances = self.safe_value(response, 'return')
        result = {'info': response}
        funds = self.safe_value(balances, 'funds')
        currencyIds = list(funds.keys())
        for i in range(0, len(currencyIds)):
            currencyId = currencyIds[i]
            code = self.safe_currency_code(currencyId)
            balance = self.safe_value(funds, currencyId, {})
            account = self.account()
            account['free'] = self.safe_float(balance, 'available')
            account['total'] = self.safe_float(balance, 'total')
            result[code] = account
        return self.parse_balance(result)

    def parse_ticker(self, ticker, market=None):
        timestamp = self.safe_timestamp(ticker, 'updated')
        symbol = None
        marketId = self.safe_string(ticker, 'pair')
        market = self.parse_market(marketId)
        if market is not None:
            symbol = market['symbol']
        average = self.safe_float(ticker, 'avg')
        if average is not None:
            if average > 0:
                average = 1 / average
        last = self.safe_float(ticker, 'last')
        return {'symbol': symbol, 'timestamp': timestamp, 'datetime': self.
            iso8601(timestamp), 'high': self.safe_float(ticker, 'high'),
            'low': self.safe_float(ticker, 'low'), 'bid': self.safe_float(
            ticker, 'buy'), 'bidVolume': None, 'ask': self.safe_float(
            ticker, 'sell'), 'askVolume': None, 'vwap': None, 'open': None,
            'close': last, 'last': last, 'previousClose': None, 'change':
            None, 'percentage': None, 'average': average, 'baseVolume':
            self.safe_float(ticker, 'vol'), 'quoteVolume': self.safe_float(
            ticker, 'vol_cur'), 'info': ticker}

    def parse_trade(self, trade, market=None):
        timestamp = self.safe_timestamp(trade, 'timestamp')
        side = self.safe_string(trade, 'type')
        if side == 'ask':
            side = 'sell'
        elif side == 'bid':
            side = 'buy'
        price = self.safe_float_2(trade, 'rate', 'price')
        id = self.safe_string_2(trade, 'number', 'id')
        orderId = self.safe_string(trade, 'orderId')
        marketId = self.safe_string(trade, 'pair')
        market = self.parse_market(marketId)
        symbol = None
        if market is not None:
            symbol = market['symbol']
        amount = self.safe_float_2(trade, 'amount', 'volume')
        type = 'limit'
        takerOrMaker = None
        fee = None
        feeCost = self.safe_float(trade, 'commission')
        if feeCost is not None:
            feeCurrencyId = self.safe_string(trade, 'commissionCurrency')
            feeCurrencyCode = self.safe_currency_code(feeCurrencyId)
            fee = {'cost': feeCost, 'currency': feeCurrencyCode}
        isYourOrder = self.safe_value(trade, 'is_your_order')
        if isYourOrder is not None:
            takerOrMaker = 'taker'
            if isYourOrder:
                takerOrMaker = 'maker'
            if fee is None:
                fee = self.calculate_fee(symbol, type, side, amount, price,
                    takerOrMaker)
        cost = None
        if price is not None:
            if amount is not None:
                cost = price * amount
        return {'id': id, 'order': orderId, 'timestamp': timestamp,
            'datetime': self.iso8601(timestamp), 'symbol': symbol, 'type':
            type, 'side': side, 'takerOrMaker': takerOrMaker, 'price':
            price, 'amount': amount, 'cost': cost, 'fee': fee, 'info': trade}

    def parse_trades(self, trades, market=None, since=None, limit=None,
        params={}):
        result = []
        if isinstance(trades, list):
            for i in range(0, len(trades)):
                result.append(self.parse_trade(trades[i], market))
        else:
            ids = list(trades.keys())
            for i in range(0, len(ids)):
                id = ids[i]
                trade = self.parse_trade(trades[id], market)
                result.append(self.extend(trade, {'id': id}, params))
        result = self.sort_by(result, 'timestamp')
        symbol = market['symbol'] if market is not None else None
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

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

    def fetch_order_book(self, symbol, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {'pair': market['id']}
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetDepthPair(self.extend(request, params))
        market_id_in_reponse = market['id'] in response
        if not market_id_in_reponse:
            raise ExchangeError(self.id + ' ' + market['symbol'] +
                ' order book is empty or not available')
        orderbook = response[market['id']]
        return self.parse_order_book(orderbook)

    def fetch_order_books(self, symbols=None, limit=None, params={}):
        self.load_markets()
        ids = None
        if symbols is None:
            ids = '-'.join(self.ids)
            if len(ids) > 2048:
                numIds = len(self.ids)
                raise ExchangeError(self.id + ' has ' + str(numIds) +
                    ' symbols exceeding max URL length, you are required to specify a list of symbols in the first argument to fetchOrderBooks'
                    )
        else:
            ids = self.market_ids(symbols)
            ids = '-'.join(ids)
        request = {'pair': ids}
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetDepthPair(self.extend(request, params))
        result = {}
        ids = list(response.keys())
        for i in range(0, len(ids)):
            id = ids[i]
            symbol = id
            if id in self.markets_by_id:
                market = self.markets_by_id[id]
                symbol = market['symbol']
            result[symbol] = self.parse_order_book(response[id])
        return result

    def fetch_tickers(self, symbols=None, params={}):
        self.load_markets()
        ids = self.ids
        if symbols is None:
            numIds = len(ids)
            ids = '-'.join(ids)
            maxLength = self.safe_integer(self.options,
                'fetchTickersMaxLength', 2048)
            if len(ids) > self.options['fetchTickersMaxLength']:
                raise ArgumentsRequired(self.id + ' has ' + str(numIds) +
                    ' markets exceeding max URL length for self endpoint(' +
                    str(maxLength) +
                    ' characters), please, specify a list of symbols of interest in the first argument to fetchTickers'
                    )
        else:
            ids = self.market_ids(symbols)
            ids = '-'.join(ids)
        request = {'pair': ids}
        tickers = self.publicGetTickerPair(self.extend(request, params))
        result = {}
        keys = list(tickers.keys())
        for k in range(0, len(keys)):
            id = keys[k]
            ticker = tickers[id]
            symbol = id
            market = None
            if id in self.markets_by_id:
                market = self.markets_by_id[id]
                symbol = market['symbol']
            result[symbol] = self.parse_ticker(ticker, market)
        return result

    def fetch_ticker(self, symbol, params={}):
        tickers = self.fetch_tickers([symbol], params)
        return tickers[symbol]

    def fetch_trades(self, symbol, since=None, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {'pair': market['id']}
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetTradesPair(self.extend(request, params))
        if isinstance(response, list):
            numElements = len(response)
            if numElements == 0:
                return []
        return self.parse_trades(response[market['id']], market, since, limit)

    def parse_ohlcv(self, ohlcv, market=None):
        return [self.safe_integer(ohlcv, 'timestamp'), self.safe_float(
            ohlcv, 'open'), self.safe_float(ohlcv, 'high'), self.safe_float
            (ohlcv, 'low'), self.safe_float(ohlcv, 'close'), self.
            safe_float(ohlcv, 'amount')]

    def fetch_ohlcv(self, symbol, timeframe='1m', since=None, limit=None,
        params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {'pair': market['id'], 'period': self.timeframes[timeframe]}
        method = 'publicGetLastBarsPairPeriodAmount'
        if since is None:
            if limit is None:
                limit = 100
            request['amount'] = limit
        else:
            method = 'publicGetPeriodBarsPairPeriodStartEnd'
            request['start'] = int(since / 1000)
            if limit is None:
                request['end'] = self.seconds()
            else:
                duration = self.parse_timeframe(timeframe) * 1000
                end = self.sum(since, duration * limit)
                request['end'] = int(end / 1000)
        response = getattr(self, method)(self.extend(request, params))
        candles = self.safe_value(response, market['id'], [])
        return self.parse_ohlcvs(candles, market, timeframe, since, limit)

    def create_order(self, symbol, type, side, amount, price=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        if type == 'market' and price is None:
            raise ArgumentsRequired(self.id +
                ' createOrder requires a price argument even for market orders, that is the worst price that you agree to fill your order for'
                )
        request = {'pair': market['id'], 'type': side, 'volume': self.
            amount_to_precision(symbol, amount), 'rate': self.
            price_to_precision(symbol, price), 'orderType': type}
        price = float(price)
        amount = float(amount)
        response = self.privatePostOrderNew(self.extend(request, params))
        status = 'open'
        filled = 0.0
        remaining = amount
        responseReturn = self.safe_value(response, 'return')
        id = self.safe_string_2(responseReturn, 'orderId', 'order_id')
        if id == '0':
            id = self.safe_string(responseReturn, 'initOrderId',
                'init_order_id')
            status = 'closed'
        filled = self.safe_float(responseReturn, 'received', 0.0)
        remaining = self.safe_float(responseReturn, 'remains', amount)
        timestamp = self.milliseconds()
        return {'info': response, 'id': id, 'timestamp': timestamp,
            'datetime': self.iso8601(timestamp), 'lastTradeTimestamp': None,
            'status': status, 'symbol': symbol, 'type': type, 'side': side,
            'price': price, 'cost': price * filled, 'amount': amount,
            'remaining': remaining, 'filled': filled, 'fee': None}

    def parse_order_status(self, status):
        statuses = {'0': 'open', '1': 'closed', '2': 'canceled', '3':
            'canceling', '7': 'canceled'}
        return self.safe_string(statuses, status, status)

    def parse_market(self, id):
        if id in self.markets_by_id:
            return self.markets_by_id[id]
        else:
            markets_by_other_id = self.safe_value(self.options,
                'markets_by_other_id')
            if markets_by_other_id is None:
                self.options['markets_by_other_id'] = self.index_by(self.
                    markets, 'otherId')
                markets_by_other_id = self.options['markets_by_other_id']
            if id in markets_by_other_id:
                return markets_by_other_id[id]
        return None

    def parse_order(self, order, market=None):
        id = self.safe_string(order, 'id')
        status = self.parse_order_status(self.safe_string(order, 'status'))
        timestamp = self.safe_timestamp(order, 'timestampCreated')
        marketId = self.safe_string(order, 'pair')
        market = self.parse_market(marketId)
        symbol = None
        if market is not None:
            symbol = market['symbol']
        remaining = self.safe_float(order, 'remainingVolume')
        amount = self.safe_float(order, 'volume')
        price = self.safe_float(order, 'rate')
        filled = None
        cost = None
        if amount is not None:
            if remaining is not None:
                filled = amount - remaining
                cost = price * filled
        orderType = self.safe_string(order, 'orderType')
        side = self.safe_string(order, 'type')
        fee = None
        deals = self.safe_value(order, 'deals', [])
        numDeals = len(deals)
        trades = None
        lastTradeTimestamp = None
        if numDeals > 0:
            trades = self.parse_trades(deals)
            feeCost = None
            feeCurrency = None
            for i in range(0, len(trades)):
                trade = trades[i]
                if feeCost is None:
                    feeCost = 0
                feeCost = self.sum(feeCost, trade['fee']['cost'])
                feeCurrency = trade['fee']['currency']
                lastTradeTimestamp = trade['timestamp']
            if feeCost is not None:
                fee = {'cost': feeCost, 'currency': feeCurrency}
        return {'info': order, 'id': id, 'clientOrderId': None, 'symbol':
            symbol, 'timestamp': timestamp, 'datetime': self.iso8601(
            timestamp), 'lastTradeTimestamp': lastTradeTimestamp, 'type':
            orderType, 'side': side, 'price': price, 'cost': cost, 'amount':
            amount, 'remaining': remaining, 'filled': filled, 'status':
            status, 'fee': fee, 'trades': trades}

    def fetch_order(self, id, symbol=None, params={}):
        self.load_markets()
        request = {'orderId': int(id)}
        response = self.privatePostOrderStatus(self.extend(request, params))
        return self.parse_order(self.extend({'id': id}, response['return']))

    def parse_orders_by_id(self, orders, symbol=None, since=None, limit=None):
        ids = list(orders.keys())
        result = []
        for i in range(0, len(ids)):
            id = ids[i]
            order = self.parse_order(self.extend({'id': str(id)}, orders[id]))
            result.append(order)
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

    def fetch_open_orders(self, symbol=None, since=None, limit=None, params={}
        ):
        self.load_markets()
        request = {}
        response = self.privatePostOrders(self.extend(request, params))
        return self.parse_orders_by_id(self.safe_value(response, 'return',
            {}), symbol, since, limit)

    def fetch_orders(self, symbol=None, since=None, limit=None, params={}):
        self.load_markets()
        request = {}
        if limit is not None:
            request['count'] = limit
        response = self.privatePostHistoryOrders(self.extend(request, params))
        return self.parse_orders_by_id(self.safe_value(response, 'return',
            {}), symbol, since, limit)

    def cancel_order(self, id, symbol=None, params={}):
        self.load_markets()
        request = {'orderId': id}
        response = self.privatePostOrderCancel(self.extend(request, params))
        if id in self.orders:
            self.orders[id]['status'] = 'canceled'
        return response

    def parse_orders(self, orders, market=None, since=None, limit=None,
        params={}):
        result = []
        ids = list(orders.keys())
        symbol = None
        if market is not None:
            symbol = market['symbol']
        for i in range(0, len(ids)):
            id = ids[i]
            order = self.extend({'id': id}, orders[id])
            result.append(self.extend(self.parse_order(order, market), params))
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

    def fetch_closed_orders(self, symbol=None, since=None, limit=None,
        params={}):
        orders = self.fetch_orders(symbol, since, limit, params)
        return self.filter_by(orders, 'status', 'closed')

    def fetch_my_trades(self, symbol=None, since=None, limit=None, params={}):
        self.load_markets()
        market = None
        request = {}
        if symbol is not None:
            market = self.market(symbol)
            request['pair'] = market['id']
        if limit is not None:
            request['count'] = int(limit)
        if since is not None:
            request['since'] = int(since / 1000)
        response = self.privatePostHistoryTrades(self.extend(request, params))
        trades = []
        if 'return' in response:
            trades = response['return']
        return self.parse_trades(trades, market, since, limit)

    def fetch_transactions(self, code=None, since=None, limit=None, params={}):
        self.load_markets()
        currency = None
        request = {}
        if code is not None:
            currency = self.currency(code)
            request['currency'] = currency['id']
        if since is not None:
            request['since'] = since
        if limit is not None:
            request['count'] = limit
        response = self.privatePostHistoryTransactions(self.extend(request,
            params))
        transactions = self.safe_value(response, 'return', [])
        return self.parse_transactions(transactions, currency, since, limit)

    def parse_transaction_status(self, status):
        statuses = {'1': 'failed', '2': 'ok', '3': 'pending', '4': 'failed'}
        return self.safe_string(statuses, status, status)

    def parse_transaction(self, transaction, currency=None):
        timestamp = self.safe_timestamp(transaction, 'timestamp')
        type = self.safe_string(transaction, 'type')
        if type is not None:
            if type == 'Incoming':
                type = 'deposit'
            elif type == 'Withdraw':
                type = 'withdrawal'
        currencyId = self.safe_string(transaction, 'currency')
        code = self.safe_currency_code(currencyId, currency)
        status = self.parse_transaction_status(self.safe_string(transaction,
            'status'))
        return {'id': self.safe_string(transaction, 'id'), 'txid': self.
            safe_string(transaction, 'txid'), 'timestamp': timestamp,
            'datetime': self.iso8601(timestamp), 'address': self.
            safe_string(transaction, 'address'), 'type': type, 'amount':
            self.safe_float(transaction, 'amount'), 'currency': code,
            'status': status, 'fee': {'currency': code, 'cost': self.
            safe_float(transaction, 'commission'), 'rate': None}, 'info':
            transaction}

    def create_deposit_address(self, code, params={}):
        request = {'new': 1}
        response = self.fetch_deposit_address(code, self.extend(request,
            params))
        return response

    def fetch_deposit_address(self, code, params={}):
        self.load_markets()
        currency = self.currency(code)
        request = {'currency': currency['id']}
        response = self.dwapiPostDepositCryptoaddress(self.extend(request,
            params))
        result = self.safe_value(response, 'return', {})
        address = self.safe_string(result, 'address')
        self.check_address(address)
        return {'currency': code, 'address': address, 'tag': None, 'info':
            response}

    def withdraw(self, code, amount, address, tag=None, params={}):
        self.check_address(address)
        self.load_markets()
        currency = self.currency(code)
        commission = self.safe_value(params, 'commission')
        if commission is None:
            raise ArgumentsRequired(self.id +
                ' withdraw() requires a `commission`(withdrawal fee) parameter(string)'
                )
        params = self.omit(params, commission)
        request = {'currency': currency['id'], 'amount': float(amount),
            'address': address, 'commission': commission}
        if tag is not None:
            request['address'] += ':' + tag
        response = self.dwapiPostWithdrawCrypto(self.extend(request, params))
        data = self.safe_value(response, 'return', {})
        id = self.safe_string(data, 'transactionId')
        return {'info': response, 'id': id}

    def sign(self, path, api='public', method='GET', params={}, headers=
        None, body=None):
        url = self.urls['api'][api]
        query = self.omit(params, self.extract_params(path))
        if api == 'private' or api == 'dwapi':
            url += '/' + self.version + '/' + self.implode_params(path, params)
            self.check_required_credentials()
            nonce = self.nonce()
            body = self.urlencode(self.extend({'nonce': nonce}, query))
            signature = self.decode(self.hmac(self.encode(body), self.
                encode(self.secret), hashlib.sha512, 'base64'))
            headers = {'Content-Type': 'application/x-www-form-urlencoded',
                'Key': self.apiKey, 'Sign': signature}
        elif api == 'public':
            url += '/' + self.implode_params(path, params)
            if query:
                url += '?' + self.urlencode(query)
        else:
            url += '/' + self.implode_params(path, params)
            if method == 'GET':
                if query:
                    url += '?' + self.urlencode(query)
            elif query:
                body = self.json(query)
                headers = {'Content-Type': 'application/json'}
        return {'url': url, 'method': method, 'body': body, 'headers': headers}

    def handle_errors(self, httpCode, reason, url, method, headers, body,
        response, requestHeaders, requestBody):
        if response is None:
            return
        if 'success' in response:
            success = self.safe_value(response, 'success', False)
            if isinstance(success, basestring):
                if success == 'true' or success == '1':
                    success = True
                else:
                    success = False
            if not success:
                code = self.safe_string(response, 'code')
                message = self.safe_string(response, 'error')
                feedback = self.id + ' ' + body
                self.throw_exactly_matched_exception(self.exceptions[
                    'exact'], code, feedback)
                self.throw_exactly_matched_exception(self.exceptions[
                    'exact'], message, feedback)
                self.throw_broadly_matched_exception(self.exceptions[
                    'broad'], message, feedback)
                raise ExchangeError(feedback)

# -*- 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

# -----------------------------------------------------------------------------

try:
    basestring  # Python 3
except NameError:
    basestring = str  # Python 2
import hashlib
from ccxt.base.errors import ExchangeError
from ccxt.base.errors import AuthenticationError
from ccxt.base.errors import PermissionDenied
from ccxt.base.errors import ArgumentsRequired
from ccxt.base.errors import BadRequest
from ccxt.base.errors import InsufficientFunds
from ccxt.base.errors import InvalidOrder
from ccxt.base.errors import DDoSProtection
from ccxt.base.errors import ExchangeNotAvailable
from ccxt.base.errors import InvalidNonce


class dsx(Exchange):

    def describe(self):
        return self.deep_extend(super(dsx, self).describe(), {
            'id': 'dsx',
            'name': 'DSX',
            'countries': ['UK'],
            'rateLimit': 1500,
            'version': 'v3',
            'has': {
                'cancelOrder': True,
                'CORS': False,
                'createDepositAddress': True,
                'createMarketOrder': False,
                'createOrder': True,
                'fetchBalance': True,
                'fetchClosedOrders': False,
                'fetchDepositAddress': True,
                'fetchMarkets': True,
                'fetchMyTrades': True,
                'fetchOHLCV': True,
                'fetchOpenOrders': True,
                'fetchOrder': True,
                'fetchOrderBook': True,
                'fetchOrderBooks': True,
                'fetchOrders': True,
                'fetchTicker': True,
                'fetchTickers': True,
                'fetchTransactions': True,
                'fetchTrades': True,
                'withdraw': True,
            },
            'urls': {
                'logo': 'https://user-images.githubusercontent.com/51840849/76909626-cb2bb100-68bc-11ea-99e0-28ba54f04792.jpg',
                'api': {
                    'public': 'https://dsxglobal.com/mapi',  # market data
                    'private': 'https://dsxglobal.com/tapi',  # trading
                    'dwapi': 'https://dsxglobal.com/dwapi',  # deposit/withdraw
                },
                'www': 'https://dsxglobal.com',
                'doc': [
                    'https://dsxglobal.com/developers/publicApi',
                ],
            },
            'fees': {
                'trading': {
                    'tierBased': True,
                    'percentage': True,
                    'maker': 0.15 / 100,
                    'taker': 0.25 / 100,
                },
            },
            'timeframes': {
                '1m': 'm',
                '1h': 'h',
                '1d': 'd',
            },
            'api': {
                # market data(public)
                'public': {
                    'get': [
                        'barsFromMoment/{pair}/{period}/{start}',
                        'depth/{pair}',
                        'info',
                        'lastBars/{pair}/{period}/{amount}',  # period is 'm', 'h' or 'd'
                        'periodBars/{pair}/{period}/{start}/{end}',
                        'ticker/{pair}',
                        'trades/{pair}',
                    ],
                },
                # trading(private)
                'private': {
                    'post': [
                        'info/account',
                        'history/transactions',
                        'history/trades',
                        'history/orders',
                        'orders',
                        'order/cancel',
                        # 'order/cancel/all',
                        'order/status',
                        'order/new',
                        'volume',
                        'fees',  # trading fee schedule
                    ],
                },
                # deposit / withdraw(private)
                'dwapi': {
                    'post': [
                        'deposit/cryptoaddress',
                        'withdraw/crypto',
                        'withdraw/fiat',
                        'withdraw/submit',
                        # 'withdraw/cancel',
                        'transaction/status',  # see 'history/transactions' in private tapi above
                    ],
                },
            },
            'exceptions': {
                'exact': {
                    'Sign is invalid': AuthenticationError,  # {"success":0,"error":"Sign is invalid"}
                    'Order was rejected. Incorrect price.': InvalidOrder,  # {"success":0,"error":"Order was rejected. Incorrect price."}
                    "Order was rejected. You don't have enough money.": InsufficientFunds,  # {"success":0,"error":"Order was rejected. You don't have enough money."}
                    'This method is blocked for your pair of keys': PermissionDenied,  # {"success":0,"error":"This method is blocked for your pair of keys"}
                },
                'broad': {
                    'INVALID_PARAMETER': BadRequest,
                    'Invalid pair name': ExchangeError,  # {"success":0,"error":"Invalid pair name: btc_eth"}
                    'invalid api key': AuthenticationError,
                    'invalid sign': AuthenticationError,
                    'api key dont have trade permission': AuthenticationError,
                    'invalid parameter': InvalidOrder,
                    'invalid order': InvalidOrder,
                    'Requests too often': DDoSProtection,
                    'not available': ExchangeNotAvailable,
                    'data unavailable': ExchangeNotAvailable,
                    'external service unavailable': ExchangeNotAvailable,
                    'nonce is invalid': InvalidNonce,  # {"success":0,"error":"Parameter: nonce is invalid"}
                    'Incorrect volume': InvalidOrder,  # {"success": 0,"error":"Order was rejected. Incorrect volume."}
                },
            },
            'options': {
                'fetchTickersMaxLength': 250,
            },
            'commonCurrencies': {
                'DSH': 'DASH',
            },
        })

    def fetch_markets(self, params={}):
        response = self.publicGetInfo(params)
        #
        #     {
        #         "server_time": 1522057909,
        #         "pairs": {
        #             "ethusd": {
        #                 "decimal_places": 5,
        #                 "min_price": 100,
        #                 "max_price": 1500,
        #                 "min_amount": 0.01,
        #                 "hidden": 0,
        #                 "fee": 0,
        #                 "amount_decimal_places": 4,
        #                 "quoted_currency": "USD",
        #                 "base_currency": "ETH"
        #             }
        #         }
        #     }
        #
        markets = self.safe_value(response, 'pairs')
        keys = list(markets.keys())
        result = []
        for i in range(0, len(keys)):
            id = keys[i]
            market = markets[id]
            baseId = self.safe_string(market, 'base_currency')
            quoteId = self.safe_string(market, 'quoted_currency')
            base = self.safe_currency_code(baseId)
            quote = self.safe_currency_code(quoteId)
            symbol = base + '/' + quote
            precision = {
                'amount': self.safe_integer(market, 'decimal_places'),
                'price': self.safe_integer(market, 'decimal_places'),
            }
            amountLimits = {
                'min': self.safe_float(market, 'min_amount'),
                'max': self.safe_float(market, 'max_amount'),
            }
            priceLimits = {
                'min': self.safe_float(market, 'min_price'),
                'max': self.safe_float(market, 'max_price'),
            }
            costLimits = {
                'min': self.safe_float(market, 'min_total'),
            }
            limits = {
                'amount': amountLimits,
                'price': priceLimits,
                'cost': costLimits,
            }
            hidden = self.safe_integer(market, 'hidden')
            active = (hidden == 0)
            # see parseMarket below
            # https://github.com/ccxt/ccxt/pull/5786
            otherId = base.lower() + quote.lower()
            result.append({
                'id': id,
                'otherId': otherId,  # https://github.com/ccxt/ccxt/pull/5786
                'symbol': symbol,
                'base': base,
                'quote': quote,
                'baseId': baseId,
                'quoteId': quoteId,
                'active': active,
                'precision': precision,
                'limits': limits,
                'info': market,
            })
        return result

    def fetch_balance(self, params={}):
        self.load_markets()
        response = self.privatePostInfoAccount()
        #
        #     {
        #         "success" : 1,
        #         "return" : {
        #             "funds" : {
        #                 "BTC" : {
        #                     "total" : 0,
        #                     "available" : 0
        #                 },
        #                 "USD" : {
        #                     "total" : 0,
        #                     "available" : 0
        #                 },
        #                 "USDT" : {
        #                     "total" : 0,
        #                     "available" : 0
        #                 }
        #             },
        #             "rights" : {
        #                 "info" : 1,
        #                 "trade" : 1
        #             },
        #             "transactionCount" : 0,
        #             "openOrders" : 0,
        #             "serverTime" : 1537451465
        #         }
        #     }
        #
        balances = self.safe_value(response, 'return')
        result = {'info': response}
        funds = self.safe_value(balances, 'funds')
        currencyIds = list(funds.keys())
        for i in range(0, len(currencyIds)):
            currencyId = currencyIds[i]
            code = self.safe_currency_code(currencyId)
            balance = self.safe_value(funds, currencyId, {})
            account = self.account()
            account['free'] = self.safe_float(balance, 'available')
            account['total'] = self.safe_float(balance, 'total')
            result[code] = account
        return self.parse_balance(result)

    def parse_ticker(self, ticker, market=None):
        #
        #   {   high:  0.03492,
        #         low:  0.03245,
        #         avg:  29.46133,
        #         vol:  500.8661,
        #     vol_cur:  17.000797104,
        #        last:  0.03364,
        #         buy:  0.03362,
        #        sell:  0.03381,
        #     updated:  1537521993,
        #        pair: "ethbtc"       }
        #
        timestamp = self.safe_timestamp(ticker, 'updated')
        symbol = None
        marketId = self.safe_string(ticker, 'pair')
        market = self.parse_market(marketId)
        if market is not None:
            symbol = market['symbol']
        # dsx average is inverted, liqui average is not
        average = self.safe_float(ticker, 'avg')
        if average is not None:
            if average > 0:
                average = 1 / average
        last = self.safe_float(ticker, 'last')
        return {
            'symbol': symbol,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'high': self.safe_float(ticker, 'high'),
            'low': self.safe_float(ticker, 'low'),
            'bid': self.safe_float(ticker, 'buy'),
            'bidVolume': None,
            'ask': self.safe_float(ticker, 'sell'),
            'askVolume': None,
            'vwap': None,
            'open': None,
            'close': last,
            'last': last,
            'previousClose': None,
            'change': None,
            'percentage': None,
            'average': average,
            'baseVolume': self.safe_float(ticker, 'vol'),
            'quoteVolume': self.safe_float(ticker, 'vol_cur'),
            'info': ticker,
        }

    def parse_trade(self, trade, market=None):
        #
        # fetchTrades(public)
        #
        #     {
        #         "amount" : 0.0128,
        #         "price" : 6483.99000,
        #         "timestamp" : 1540334614,
        #         "tid" : 35684364,
        #         "type" : "ask"
        #     }
        #
        # fetchMyTrades(private)
        #
        #     {
        #         "number": "36635882",  # <-- self is present if the trade has come from the '/order/status' call
        #         "id": "36635882",  # <-- self may have been artifically added by the parseTrades method
        #         "pair": "btcusd",
        #         "type": "buy",
        #         "volume": 0.0595,
        #         "rate": 9750,
        #         "orderId": 77149299,
        #         "timestamp": 1519612317,
        #         "commission": 0.00020825,
        #         "commissionCurrency": "btc"
        #     }
        #
        timestamp = self.safe_timestamp(trade, 'timestamp')
        side = self.safe_string(trade, 'type')
        if side == 'ask':
            side = 'sell'
        elif side == 'bid':
            side = 'buy'
        price = self.safe_float_2(trade, 'rate', 'price')
        id = self.safe_string_2(trade, 'number', 'id')
        orderId = self.safe_string(trade, 'orderId')
        marketId = self.safe_string(trade, 'pair')
        market = self.parse_market(marketId)
        symbol = None
        if market is not None:
            symbol = market['symbol']
        amount = self.safe_float_2(trade, 'amount', 'volume')
        type = 'limit'  # all trades are still limit trades
        takerOrMaker = None
        fee = None
        feeCost = self.safe_float(trade, 'commission')
        if feeCost is not None:
            feeCurrencyId = self.safe_string(trade, 'commissionCurrency')
            feeCurrencyCode = self.safe_currency_code(feeCurrencyId)
            fee = {
                'cost': feeCost,
                'currency': feeCurrencyCode,
            }
        isYourOrder = self.safe_value(trade, 'is_your_order')
        if isYourOrder is not None:
            takerOrMaker = 'taker'
            if isYourOrder:
                takerOrMaker = 'maker'
            if fee is None:
                fee = self.calculate_fee(symbol, type, side, amount, price, takerOrMaker)
        cost = None
        if price is not None:
            if amount is not None:
                cost = price * amount
        return {
            'id': id,
            'order': orderId,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'symbol': symbol,
            'type': type,
            'side': side,
            'takerOrMaker': takerOrMaker,
            'price': price,
            'amount': amount,
            'cost': cost,
            'fee': fee,
            'info': trade,
        }

    def parse_trades(self, trades, market=None, since=None, limit=None, params={}):
        result = []
        if isinstance(trades, list):
            for i in range(0, len(trades)):
                result.append(self.parse_trade(trades[i], market))
        else:
            ids = list(trades.keys())
            for i in range(0, len(ids)):
                id = ids[i]
                trade = self.parse_trade(trades[id], market)
                result.append(self.extend(trade, {'id': id}, params))
        result = self.sort_by(result, 'timestamp')
        symbol = market['symbol'] if (market is not None) else None
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

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

    def fetch_order_book(self, symbol, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {
            'pair': market['id'],
        }
        if limit is not None:
            request['limit'] = limit  # default = 150, max = 2000
        response = self.publicGetDepthPair(self.extend(request, params))
        market_id_in_reponse = (market['id'] in response)
        if not market_id_in_reponse:
            raise ExchangeError(self.id + ' ' + market['symbol'] + ' order book is empty or not available')
        orderbook = response[market['id']]
        return self.parse_order_book(orderbook)

    def fetch_order_books(self, symbols=None, limit=None, params={}):
        self.load_markets()
        ids = None
        if symbols is None:
            ids = '-'.join(self.ids)
            # max URL length is 2083 symbols, including http schema, hostname, tld, etc...
            if len(ids) > 2048:
                numIds = len(self.ids)
                raise ExchangeError(self.id + ' has ' + str(numIds) + ' symbols exceeding max URL length, you are required to specify a list of symbols in the first argument to fetchOrderBooks')
        else:
            ids = self.market_ids(symbols)
            ids = '-'.join(ids)
        request = {
            'pair': ids,
        }
        if limit is not None:
            request['limit'] = limit  # default = 150, max = 2000
        response = self.publicGetDepthPair(self.extend(request, params))
        result = {}
        ids = list(response.keys())
        for i in range(0, len(ids)):
            id = ids[i]
            symbol = id
            if id in self.markets_by_id:
                market = self.markets_by_id[id]
                symbol = market['symbol']
            result[symbol] = self.parse_order_book(response[id])
        return result

    def fetch_tickers(self, symbols=None, params={}):
        self.load_markets()
        ids = self.ids
        if symbols is None:
            numIds = len(ids)
            ids = '-'.join(ids)
            maxLength = self.safe_integer(self.options, 'fetchTickersMaxLength', 2048)
            # max URL length is 2048 symbols, including http schema, hostname, tld, etc...
            if len(ids) > self.options['fetchTickersMaxLength']:
                raise ArgumentsRequired(self.id + ' has ' + str(numIds) + ' markets exceeding max URL length for self endpoint(' + str(maxLength) + ' characters), please, specify a list of symbols of interest in the first argument to fetchTickers')
        else:
            ids = self.market_ids(symbols)
            ids = '-'.join(ids)
        request = {
            'pair': ids,
        }
        tickers = self.publicGetTickerPair(self.extend(request, params))
        #
        #     {
        #         "bchbtc" : {
        #             "high" : 0.02989,
        #             "low" : 0.02736,
        #             "avg" : 33.90585,
        #             "vol" : 0.65982205,
        #             "vol_cur" : 0.0194604180960,
        #             "last" : 0.03000,
        #             "buy" : 0.02980,
        #             "sell" : 0.03001,
        #             "updated" : 1568104614,
        #             "pair" : "bchbtc"
        #         },
        #         "ethbtc" : {
        #             "high" : 0.01772,
        #             "low" : 0.01742,
        #             "avg" : 56.89082,
        #             "vol" : 229.247115044,
        #             "vol_cur" : 4.02959737298943,
        #             "last" : 0.01769,
        #             "buy" : 0.01768,
        #             "sell" : 0.01776,
        #             "updated" : 1568104614,
        #             "pair" : "ethbtc"
        #         }
        #     }
        #
        result = {}
        keys = list(tickers.keys())
        for k in range(0, len(keys)):
            id = keys[k]
            ticker = tickers[id]
            symbol = id
            market = None
            if id in self.markets_by_id:
                market = self.markets_by_id[id]
                symbol = market['symbol']
            result[symbol] = self.parse_ticker(ticker, market)
        return result

    def fetch_ticker(self, symbol, params={}):
        tickers = self.fetch_tickers([symbol], params)
        return tickers[symbol]

    def fetch_trades(self, symbol, since=None, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {
            'pair': market['id'],
        }
        if limit is not None:
            request['limit'] = limit
        response = self.publicGetTradesPair(self.extend(request, params))
        if isinstance(response, list):
            numElements = len(response)
            if numElements == 0:
                return []
        return self.parse_trades(response[market['id']], market, since, limit)

    def parse_ohlcv(self, ohlcv, market=None):
        #
        #     {
        #         "high" : 0.01955,
        #         "open" : 0.01955,
        #         "low" : 0.01955,
        #         "close" : 0.01955,
        #         "amount" : 2.5,
        #         "timestamp" : 1565155740000
        #     }
        #
        return [
            self.safe_integer(ohlcv, 'timestamp'),
            self.safe_float(ohlcv, 'open'),
            self.safe_float(ohlcv, 'high'),
            self.safe_float(ohlcv, 'low'),
            self.safe_float(ohlcv, 'close'),
            self.safe_float(ohlcv, 'amount'),
        ]

    def fetch_ohlcv(self, symbol, timeframe='1m', since=None, limit=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        request = {
            'pair': market['id'],
            'period': self.timeframes[timeframe],
        }
        method = 'publicGetLastBarsPairPeriodAmount'
        if since is None:
            if limit is None:
                limit = 100  # required, max 2000
            request['amount'] = limit
        else:
            method = 'publicGetPeriodBarsPairPeriodStartEnd'
            # in their docs they expect milliseconds
            # but it returns empty arrays with milliseconds
            # however, it does work properly with seconds
            request['start'] = int(since / 1000)
            if limit is None:
                request['end'] = self.seconds()
            else:
                duration = self.parse_timeframe(timeframe) * 1000
                end = self.sum(since, duration * limit)
                request['end'] = int(end / 1000)
        response = getattr(self, method)(self.extend(request, params))
        #
        #     {
        #         "ethbtc": [
        #             {
        #                 "high" : 0.01955,
        #                 "open" : 0.01955,
        #                 "low" : 0.01955,
        #                 "close" : 0.01955,
        #                 "amount" : 2.5,
        #                 "timestamp" : 1565155740000
        #             },
        #             {
        #                 "high" : 0.01967,
        #                 "open" : 0.01967,
        #                 "low" : 0.01967,
        #                 "close" : 0.01967,
        #                 "amount" : 0,
        #                 "timestamp" : 1565155680000
        #             }
        #         ]
        #     }
        #
        candles = self.safe_value(response, market['id'], [])
        return self.parse_ohlcvs(candles, market, timeframe, since, limit)

    def create_order(self, symbol, type, side, amount, price=None, params={}):
        self.load_markets()
        market = self.market(symbol)
        if type == 'market' and price is None:
            raise ArgumentsRequired(self.id + ' createOrder requires a price argument even for market orders, that is the worst price that you agree to fill your order for')
        request = {
            'pair': market['id'],
            'type': side,
            'volume': self.amount_to_precision(symbol, amount),
            'rate': self.price_to_precision(symbol, price),
            'orderType': type,
        }
        price = float(price)
        amount = float(amount)
        response = self.privatePostOrderNew(self.extend(request, params))
        #
        #     {
        #       "success": 1,
        #       "return": {
        #         "received": 0,
        #         "remains": 10,
        #         "funds": {
        #           "BTC": {
        #             "total": 100,
        #             "available": 95
        #           },
        #           "USD": {
        #             "total": 10000,
        #             "available": 9995
        #           },
        #           "EUR": {
        #             "total": 1000,
        #             "available": 995
        #           },
        #           "LTC": {
        #             "total": 1000,
        #             "available": 995
        #           }
        #         },
        #         "orderId": 0,  # https://github.com/ccxt/ccxt/issues/3677
        #       }
        #     }
        #
        status = 'open'
        filled = 0.0
        remaining = amount
        responseReturn = self.safe_value(response, 'return')
        id = self.safe_string_2(responseReturn, 'orderId', 'order_id')
        if id == '0':
            id = self.safe_string(responseReturn, 'initOrderId', 'init_order_id')
            status = 'closed'
        filled = self.safe_float(responseReturn, 'received', 0.0)
        remaining = self.safe_float(responseReturn, 'remains', amount)
        timestamp = self.milliseconds()
        return {
            'info': response,
            'id': id,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'lastTradeTimestamp': None,
            'status': status,
            'symbol': symbol,
            'type': type,
            'side': side,
            'price': price,
            'cost': price * filled,
            'amount': amount,
            'remaining': remaining,
            'filled': filled,
            'fee': None,
            # 'trades': self.parse_trades(order['trades'], market),
        }

    def parse_order_status(self, status):
        statuses = {
            '0': 'open',  # Active
            '1': 'closed',  # Filled
            '2': 'canceled',  # Killed
            '3': 'canceling',  # Killing
            '7': 'canceled',  # Rejected
        }
        return self.safe_string(statuses, status, status)

    def parse_market(self, id):
        if id in self.markets_by_id:
            return self.markets_by_id[id]
        else:
            # the following is a fix for
            # https://github.com/ccxt/ccxt/pull/5786
            # https://github.com/ccxt/ccxt/issues/5770
            markets_by_other_id = self.safe_value(self.options, 'markets_by_other_id')
            if markets_by_other_id is None:
                self.options['markets_by_other_id'] = self.index_by(self.markets, 'otherId')
                markets_by_other_id = self.options['markets_by_other_id']
            if id in markets_by_other_id:
                return markets_by_other_id[id]
        return None

    def parse_order(self, order, market=None):
        #
        # fetchOrder
        #
        #   {
        #     "number": 36635882,
        #     "pair": "btcusd",
        #     "type": "buy",
        #     "remainingVolume": 10,
        #     "volume": 10,
        #     "rate": 1000.0,
        #     "timestampCreated": 1496670,
        #     "status": 0,
        #     "orderType": "limit",
        #     "deals": [
        #       {
        #         "pair": "btcusd",
        #         "type": "buy",
        #         "amount": 1,
        #         "rate": 1000.0,
        #         "orderId": 1,
        #         "timestamp": 1496672724,
        #         "commission": 0.001,
        #         "commissionCurrency": "btc"
        #       }
        #     ]
        #   }
        #
        id = self.safe_string(order, 'id')
        status = self.parse_order_status(self.safe_string(order, 'status'))
        timestamp = self.safe_timestamp(order, 'timestampCreated')
        marketId = self.safe_string(order, 'pair')
        market = self.parse_market(marketId)
        symbol = None
        if market is not None:
            symbol = market['symbol']
        remaining = self.safe_float(order, 'remainingVolume')
        amount = self.safe_float(order, 'volume')
        price = self.safe_float(order, 'rate')
        filled = None
        cost = None
        if amount is not None:
            if remaining is not None:
                filled = amount - remaining
                cost = price * filled
        orderType = self.safe_string(order, 'orderType')
        side = self.safe_string(order, 'type')
        fee = None
        deals = self.safe_value(order, 'deals', [])
        numDeals = len(deals)
        trades = None
        lastTradeTimestamp = None
        if numDeals > 0:
            trades = self.parse_trades(deals)
            feeCost = None
            feeCurrency = None
            for i in range(0, len(trades)):
                trade = trades[i]
                if feeCost is None:
                    feeCost = 0
                feeCost = self.sum(feeCost, trade['fee']['cost'])
                feeCurrency = trade['fee']['currency']
                lastTradeTimestamp = trade['timestamp']
            if feeCost is not None:
                fee = {
                    'cost': feeCost,
                    'currency': feeCurrency,
                }
        return {
            'info': order,
            'id': id,
            'clientOrderId': None,
            'symbol': symbol,
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'lastTradeTimestamp': lastTradeTimestamp,
            'type': orderType,
            'side': side,
            'price': price,
            'cost': cost,
            'amount': amount,
            'remaining': remaining,
            'filled': filled,
            'status': status,
            'fee': fee,
            'trades': trades,
        }

    def fetch_order(self, id, symbol=None, params={}):
        self.load_markets()
        request = {
            'orderId': int(id),
        }
        response = self.privatePostOrderStatus(self.extend(request, params))
        #
        #     {
        #       "success": 1,
        #       "return": {
        #         "pair": "btcusd",
        #         "type": "buy",
        #         "remainingVolume": 10,
        #         "volume": 10,
        #         "rate": 1000.0,
        #         "timestampCreated": 1496670,
        #         "status": 0,
        #         "orderType": "limit",
        #         "deals": [
        #           {
        #             "pair": "btcusd",
        #             "type": "buy",
        #             "amount": 1,
        #             "rate": 1000.0,
        #             "orderId": 1,
        #             "timestamp": 1496672724,
        #             "commission": 0.001,
        #             "commissionCurrency": "btc"
        #           }
        #         ]
        #       }
        #     }
        #
        return self.parse_order(self.extend({
            'id': id,
        }, response['return']))

    def parse_orders_by_id(self, orders, symbol=None, since=None, limit=None):
        ids = list(orders.keys())
        result = []
        for i in range(0, len(ids)):
            id = ids[i]
            order = self.parse_order(self.extend({
                'id': str(id),
            }, orders[id]))
            result.append(order)
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

    def fetch_open_orders(self, symbol=None, since=None, limit=None, params={}):
        self.load_markets()
        request = {
            # 'count': 10,  # Decimal, The maximum number of orders to return
            # 'fromId': 123,  # Decimal, ID of the first order of the selection
            # 'endId': 321,  # Decimal, ID of the last order of the selection
            # 'order': 'ASC',  # String, Order in which orders shown. Possible values are "ASC" — from first to last, "DESC" — from last to first.
        }
        response = self.privatePostOrders(self.extend(request, params))
        #
        #     {
        #       "success": 1,
        #       "return": {
        #         "0": {
        #           "pair": "btcusd",
        #           "type": "buy",
        #           "remainingVolume": 10,
        #           "volume": 10,
        #           "rate": 1000.0,
        #           "timestampCreated": 1496670,
        #           "status": 0,
        #           "orderType": "limit"
        #         }
        #       }
        #     }
        #
        return self.parse_orders_by_id(self.safe_value(response, 'return', {}), symbol, since, limit)

    def fetch_orders(self, symbol=None, since=None, limit=None, params={}):
        self.load_markets()
        request = {
            # 'count': 10,  # Decimal, The maximum number of orders to return
            # 'fromId': 123,  # Decimal, ID of the first order of the selection
            # 'endId': 321,  # Decimal, ID of the last order of the selection
            # 'order': 'ASC',  # String, Order in which orders shown. Possible values are "ASC" — from first to last, "DESC" — from last to first.
        }
        if limit is not None:
            request['count'] = limit
        response = self.privatePostHistoryOrders(self.extend(request, params))
        #
        #     {
        #       "success": 1,
        #       "return": {
        #         "0": {
        #           "pair": "btcusd",
        #           "type": "buy",
        #           "remainingVolume": 10,
        #           "volume": 10,
        #           "rate": 1000.0,
        #           "timestampCreated": 1496670,
        #           "status": 0,
        #           "orderType": "limit"
        #         }
        #       }
        #     }
        #
        return self.parse_orders_by_id(self.safe_value(response, 'return', {}), symbol, since, limit)

    def cancel_order(self, id, symbol=None, params={}):
        self.load_markets()
        request = {
            'orderId': id,
        }
        response = self.privatePostOrderCancel(self.extend(request, params))
        if id in self.orders:
            self.orders[id]['status'] = 'canceled'
        return response

    def parse_orders(self, orders, market=None, since=None, limit=None, params={}):
        result = []
        ids = list(orders.keys())
        symbol = None
        if market is not None:
            symbol = market['symbol']
        for i in range(0, len(ids)):
            id = ids[i]
            order = self.extend({'id': id}, orders[id])
            result.append(self.extend(self.parse_order(order, market), params))
        return self.filter_by_symbol_since_limit(result, symbol, since, limit)

    def fetch_closed_orders(self, symbol=None, since=None, limit=None, params={}):
        orders = self.fetch_orders(symbol, since, limit, params)
        return self.filter_by(orders, 'status', 'closed')

    def fetch_my_trades(self, symbol=None, since=None, limit=None, params={}):
        self.load_markets()
        market = None
        # some derived classes use camelcase notation for request fields
        request = {
            # 'from': 123456789,  # trade ID, from which the display starts numerical 0(test result: liqui ignores self field)
            # 'count': 1000,  # the number of trades for display numerical, default = 1000
            # 'from_id': trade ID, from which the display starts numerical 0
            # 'end_id': trade ID on which the display ends numerical ∞
            # 'order': 'ASC',  # sorting, default = DESC(test result: liqui ignores self field, most recent trade always goes last)
            # 'since': 1234567890,  # UTC start time, default = 0(test result: liqui ignores self field)
            # 'end': 1234567890,  # UTC end time, default = ∞(test result: liqui ignores self field)
            # 'pair': 'eth_btc',  # default = all markets
        }
        if symbol is not None:
            market = self.market(symbol)
            request['pair'] = market['id']
        if limit is not None:
            request['count'] = int(limit)
        if since is not None:
            request['since'] = int(since / 1000)
        response = self.privatePostHistoryTrades(self.extend(request, params))
        trades = []
        if 'return' in response:
            trades = response['return']
        return self.parse_trades(trades, market, since, limit)

    def fetch_transactions(self, code=None, since=None, limit=None, params={}):
        self.load_markets()
        currency = None
        request = {}
        if code is not None:
            currency = self.currency(code)
            request['currency'] = currency['id']
        if since is not None:
            request['since'] = since
        if limit is not None:
            request['count'] = limit
        response = self.privatePostHistoryTransactions(self.extend(request, params))
        #
        #     {
        #         "success": 1,
        #         "return": [
        #             {
        #                 "id": 1,
        #                 "timestamp": 11,
        #                 "type": "Withdraw",
        #                 "amount": 1,
        #                 "currency": "btc",
        #                 "confirmationsCount": 6,
        #                 "address": "address",
        #                 "status": 2,
        #                 "commission": 0.0001
        #             }
        #         ]
        #     }
        #
        transactions = self.safe_value(response, 'return', [])
        return self.parse_transactions(transactions, currency, since, limit)

    def parse_transaction_status(self, status):
        statuses = {
            '1': 'failed',
            '2': 'ok',
            '3': 'pending',
            '4': 'failed',
        }
        return self.safe_string(statuses, status, status)

    def parse_transaction(self, transaction, currency=None):
        #
        #     {
        #         "id": 1,
        #         "timestamp": 11,  # 11 in their docs(
        #         "type": "Withdraw",
        #         "amount": 1,
        #         "currency": "btc",
        #         "confirmationsCount": 6,
        #         "address": "address",
        #         "status": 2,
        #         "commission": 0.0001
        #     }
        #
        timestamp = self.safe_timestamp(transaction, 'timestamp')
        type = self.safe_string(transaction, 'type')
        if type is not None:
            if type == 'Incoming':
                type = 'deposit'
            elif type == 'Withdraw':
                type = 'withdrawal'
        currencyId = self.safe_string(transaction, 'currency')
        code = self.safe_currency_code(currencyId, currency)
        status = self.parse_transaction_status(self.safe_string(transaction, 'status'))
        return {
            'id': self.safe_string(transaction, 'id'),
            'txid': self.safe_string(transaction, 'txid'),
            'timestamp': timestamp,
            'datetime': self.iso8601(timestamp),
            'address': self.safe_string(transaction, 'address'),
            'type': type,
            'amount': self.safe_float(transaction, 'amount'),
            'currency': code,
            'status': status,
            'fee': {
                'currency': code,
                'cost': self.safe_float(transaction, 'commission'),
                'rate': None,
            },
            'info': transaction,
        }

    def create_deposit_address(self, code, params={}):
        request = {
            'new': 1,
        }
        response = self.fetch_deposit_address(code, self.extend(request, params))
        return response

    def fetch_deposit_address(self, code, params={}):
        self.load_markets()
        currency = self.currency(code)
        request = {
            'currency': currency['id'],
        }
        response = self.dwapiPostDepositCryptoaddress(self.extend(request, params))
        result = self.safe_value(response, 'return', {})
        address = self.safe_string(result, 'address')
        self.check_address(address)
        return {
            'currency': code,
            'address': address,
            'tag': None,  # not documented in DSX API
            'info': response,
        }

    def withdraw(self, code, amount, address, tag=None, params={}):
        self.check_address(address)
        self.load_markets()
        currency = self.currency(code)
        commission = self.safe_value(params, 'commission')
        if commission is None:
            raise ArgumentsRequired(self.id + ' withdraw() requires a `commission`(withdrawal fee) parameter(string)')
        params = self.omit(params, commission)
        request = {
            'currency': currency['id'],
            'amount': float(amount),
            'address': address,
            'commission': commission,
        }
        if tag is not None:
            request['address'] += ':' + tag
        response = self.dwapiPostWithdrawCrypto(self.extend(request, params))
        #
        #     [
        #         {
        #             "success": 1,
        #             "return": {
        #                 "transactionId": 2863073
        #             }
        #         }
        #     ]
        #
        data = self.safe_value(response, 'return', {})
        id = self.safe_string(data, 'transactionId')
        return {
            'info': response,
            'id': id,
        }

    def sign(self, path, api='public', method='GET', params={}, headers=None, body=None):
        url = self.urls['api'][api]
        query = self.omit(params, self.extract_params(path))
        if api == 'private' or api == 'dwapi':
            url += '/' + self.version + '/' + self.implode_params(path, params)
            self.check_required_credentials()
            nonce = self.nonce()
            body = self.urlencode(self.extend({
                'nonce': nonce,
            }, query))
            signature = self.decode(self.hmac(self.encode(body), self.encode(self.secret), hashlib.sha512, 'base64'))
            headers = {
                'Content-Type': 'application/x-www-form-urlencoded',
                'Key': self.apiKey,
                'Sign': signature,
            }
        elif api == 'public':
            url += '/' + self.implode_params(path, params)
            if query:
                url += '?' + self.urlencode(query)
        else:
            url += '/' + self.implode_params(path, params)
            if method == 'GET':
                if query:
                    url += '?' + self.urlencode(query)
            else:
                if query:
                    body = self.json(query)
                    headers = {
                        'Content-Type': 'application/json',
                    }
        return {'url': url, 'method': method, 'body': body, 'headers': headers}

    def handle_errors(self, httpCode, reason, url, method, headers, body, response, requestHeaders, requestBody):
        if response is None:
            return  # fallback to default error handler
        if 'success' in response:
            #
            # 1 - Liqui only returns the integer 'success' key from their private API
            #
            #     {"success": 1, ...} httpCode == 200
            #     {"success": 0, ...} httpCode == 200
            #
            # 2 - However, exchanges derived from Liqui, can return non-integers
            #
            #     It can be a numeric string
            #     {"sucesss": "1", ...}
            #     {"sucesss": "0", ...}, httpCode >= 200(can be 403, 502, etc)
            #
            #     Or just a string
            #     {"success": "true", ...}
            #     {"success": "false", ...}, httpCode >= 200
            #
            #     Or a boolean
            #     {"success": True, ...}
            #     {"success": False, ...}, httpCode >= 200
            #
            # 3 - Oversimplified, Python PEP8 forbids comparison operator(==) of different types
            #
            # 4 - We do not want to copy-paste and duplicate the code of self handler to other exchanges derived from Liqui
            #
            # To cover points 1, 2, 3 and 4 combined self handler should work like self:
            #
            success = self.safe_value(response, 'success', False)
            if isinstance(success, basestring):
                if (success == 'true') or (success == '1'):
                    success = True
                else:
                    success = False
            if not success:
                code = self.safe_string(response, 'code')
                message = self.safe_string(response, 'error')
                feedback = self.id + ' ' + body
                self.throw_exactly_matched_exception(self.exceptions['exact'], code, feedback)
                self.throw_exactly_matched_exception(self.exceptions['exact'], message, feedback)
                self.throw_broadly_matched_exception(self.exceptions['broad'], message, feedback)
                raise ExchangeError(feedback)  # unknown message
