<?php

namespace ccxt;

// 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

use Exception; // a common import
use \ccxt\ExchangeError;
use \ccxt\InvalidOrder;

class bitbank extends Exchange {

    public function describe() {
        return $this->deep_extend(parent::describe (), array(
            'id' => 'bitbank',
            'name' => 'bitbank',
            'countries' => array( 'JP' ),
            'version' => 'v1',
            'has' => array(
                'cancelOrder' => true,
                'createOrder' => true,
                'fetchBalance' => true,
                'fetchDepositAddress' => true,
                'fetchMyTrades' => true,
                'fetchOHLCV' => true,
                'fetchOpenOrders' => true,
                'fetchOrder' => true,
                'fetchOrderBook' => true,
                'fetchTicker' => true,
                'fetchTrades' => true,
                'withdraw' => true,
            ),
            'timeframes' => array(
                '1m' => '1min',
                '5m' => '5min',
                '15m' => '15min',
                '30m' => '30min',
                '1h' => '1hour',
                '4h' => '4hour',
                '8h' => '8hour',
                '12h' => '12hour',
                '1d' => '1day',
                '1w' => '1week',
            ),
            'urls' => array(
                'logo' => 'https://user-images.githubusercontent.com/1294454/37808081-b87f2d9c-2e59-11e8-894d-c1900b7584fe.jpg',
                'api' => array(
                    'public' => 'https://public.bitbank.cc',
                    'private' => 'https://api.bitbank.cc',
                ),
                'www' => 'https://bitbank.cc/',
                'doc' => 'https://docs.bitbank.cc/',
                'fees' => 'https://bitbank.cc/docs/fees/',
            ),
            'api' => array(
                'public' => array(
                    'get' => array(
                        '{pair}/ticker',
                        '{pair}/depth',
                        '{pair}/transactions',
                        '{pair}/transactions/{yyyymmdd}',
                        '{pair}/candlestick/{candletype}/{yyyymmdd}',
                    ),
                ),
                'private' => array(
                    'get' => array(
                        'user/assets',
                        'user/spot/order',
                        'user/spot/active_orders',
                        'user/spot/trade_history',
                        'user/withdrawal_account',
                    ),
                    'post' => array(
                        'user/spot/order',
                        'user/spot/cancel_order',
                        'user/spot/cancel_orders',
                        'user/spot/orders_info',
                        'user/request_withdrawal',
                    ),
                ),
            ),
            'markets' => array(
                'BCH/BTC' => array( 'id' => 'bcc_btc', 'symbol' => 'BCH/BTC', 'base' => 'BCH', 'quote' => 'BTC', 'baseId' => 'bcc', 'quoteId' => 'btc' ),
                'BCH/JPY' => array( 'id' => 'bcc_jpy', 'symbol' => 'BCH/JPY', 'base' => 'BCH', 'quote' => 'JPY', 'baseId' => 'bcc', 'quoteId' => 'jpy' ),
                'MONA/BTC' => array( 'id' => 'mona_btc', 'symbol' => 'MONA/BTC', 'base' => 'MONA', 'quote' => 'BTC', 'baseId' => 'mona', 'quoteId' => 'btc' ),
                'MONA/JPY' => array( 'id' => 'mona_jpy', 'symbol' => 'MONA/JPY', 'base' => 'MONA', 'quote' => 'JPY', 'baseId' => 'mona', 'quoteId' => 'jpy' ),
                'QTUM/BTC' => array( 'id' => 'qtum_btc', 'symbol' => 'QTUM/BTC', 'base' => 'QTUM', 'quote' => 'BTC', 'baseId' => 'qtum', 'quoteId' => 'btc' ),
                'QTUM/JPY' => array( 'id' => 'qtum_jpy', 'symbol' => 'QTUM/JPY', 'base' => 'QTUM', 'quote' => 'JPY', 'baseId' => 'qtum', 'quoteId' => 'jpy' ),
                'ETH/BTC' => array( 'id' => 'eth_btc', 'symbol' => 'ETH/BTC', 'base' => 'ETH', 'quote' => 'BTC', 'baseId' => 'eth', 'quoteId' => 'btc' ),
                'LTC/BTC' => array( 'id' => 'ltc_btc', 'symbol' => 'LTC/BTC', 'base' => 'LTC', 'quote' => 'BTC', 'baseId' => 'ltc', 'quoteId' => 'btc' ),
                'XRP/JPY' => array( 'id' => 'xrp_jpy', 'symbol' => 'XRP/JPY', 'base' => 'XRP', 'quote' => 'JPY', 'baseId' => 'xrp', 'quoteId' => 'jpy' ),
                'XLM/JPY' => array( 'id' => 'xlm_jpy', 'symbol' => 'XLM/JPY', 'base' => 'XLM', 'quote' => 'JPY', 'baseId' => 'xlm', 'quoteId' => 'jpy' ),
                'BTC/JPY' => array( 'id' => 'btc_jpy', 'symbol' => 'BTC/JPY', 'base' => 'BTC', 'quote' => 'JPY', 'baseId' => 'btc', 'quoteId' => 'jpy' ),
                'ETH/JPY' => array( 'id' => 'eth_jpy', 'symbol' => 'ETH/JPY', 'base' => 'ETH', 'quote' => 'JPY', 'baseId' => 'eth', 'quoteId' => 'jpy' ),
                'LTC/JPY' => array( 'id' => 'ltc_jpy', 'symbol' => 'LTC/JPY', 'base' => 'LTC', 'quote' => 'JPY', 'baseId' => 'ltc', 'quoteId' => 'jpy' ),
                'XRP/BTC' => array( 'id' => 'xrp_btc', 'symbol' => 'XRP/BTC', 'base' => 'XRP', 'quote' => 'BTC', 'baseId' => 'xrp', 'quoteId' => 'btc' ),
                'XLM/BTC' => array( 'id' => 'xlm_btc', 'symbol' => 'XLM/BTC', 'base' => 'XLM', 'quote' => 'BTC', 'baseId' => 'xlm', 'quoteId' => 'btc' ),
            ),
            'fees' => array(
                'trading' => array(
                    'maker' => -0.02 / 100,
                    'taker' => 0.12 / 100,
                ),
                'funding' => array(
                    'withdraw' => array(
                        // 'JPY' => (amount > 30000) ? 756 : 540,
                        'BTC' => 0.001,
                        'LTC' => 0.001,
                        'XRP' => 0.15,
                        'ETH' => 0.0005,
                        'MONA' => 0.001,
                        'BCC' => 0.001,
                    ),
                ),
            ),
            'precision' => array(
                'price' => 8,
                'amount' => 8,
            ),
            'exceptions' => array(
                '20001' => '\\ccxt\\AuthenticationError',
                '20002' => '\\ccxt\\AuthenticationError',
                '20003' => '\\ccxt\\AuthenticationError',
                '20005' => '\\ccxt\\AuthenticationError',
                '20004' => '\\ccxt\\InvalidNonce',
                '40020' => '\\ccxt\\InvalidOrder',
                '40021' => '\\ccxt\\InvalidOrder',
                '40025' => '\\ccxt\\ExchangeError',
                '40013' => '\\ccxt\\OrderNotFound',
                '40014' => '\\ccxt\\OrderNotFound',
                '50008' => '\\ccxt\\PermissionDenied',
                '50009' => '\\ccxt\\OrderNotFound',
                '50010' => '\\ccxt\\OrderNotFound',
                '60001' => '\\ccxt\\InsufficientFunds',
                '60005' => '\\ccxt\\InvalidOrder',
            ),
        ));
    }

    public function parse_ticker($ticker, $market = null) {
        $symbol = null;
        if ($market !== null) {
            $symbol = $market['symbol'];
        }
        $timestamp = $this->safe_integer($ticker, 'timestamp');
        $last = $this->safe_float($ticker, 'last');
        return array(
            'symbol' => $symbol,
            'timestamp' => $timestamp,
            'datetime' => $this->iso8601($timestamp),
            'high' => $this->safe_float($ticker, 'high'),
            'low' => $this->safe_float($ticker, 'low'),
            'bid' => $this->safe_float($ticker, 'buy'),
            'bidVolume' => null,
            'ask' => $this->safe_float($ticker, 'sell'),
            'askVolume' => null,
            'vwap' => null,
            'open' => null,
            'close' => $last,
            'last' => $last,
            'previousClose' => null,
            'change' => null,
            'percentage' => null,
            'average' => null,
            'baseVolume' => $this->safe_float($ticker, 'vol'),
            'quoteVolume' => null,
            'info' => $ticker,
        );
    }

    public function fetch_ticker($symbol, $params = array ()) {
        $this->load_markets();
        $market = $this->market($symbol);
        $request = array(
            'pair' => $market['id'],
        );
        $response = $this->publicGetPairTicker (array_merge($request, $params));
        $data = $this->safe_value($response, 'data', array());
        return $this->parse_ticker($data, $market);
    }

    public function fetch_order_book($symbol, $limit = null, $params = array ()) {
        $this->load_markets();
        $request = array(
            'pair' => $this->market_id($symbol),
        );
        $response = $this->publicGetPairDepth (array_merge($request, $params));
        $orderbook = $this->safe_value($response, 'data', array());
        $timestamp = $this->safe_integer($orderbook, 'timestamp');
        return $this->parse_order_book($orderbook, $timestamp);
    }

    public function parse_trade($trade, $market = null) {
        $timestamp = $this->safe_integer($trade, 'executed_at');
        $symbol = null;
        $feeCurrency = null;
        if ($market !== null) {
            $symbol = $market['symbol'];
            $feeCurrency = $market['quote'];
        }
        $price = $this->safe_float($trade, 'price');
        $amount = $this->safe_float($trade, 'amount');
        $cost = null;
        if ($price !== null) {
            if ($amount !== null) {
                $cost = floatval($this->cost_to_precision($symbol, $price * $amount));
            }
        }
        $id = $this->safe_string_2($trade, 'transaction_id', 'trade_id');
        $takerOrMaker = $this->safe_string($trade, 'maker_taker');
        $fee = null;
        $feeCost = $this->safe_float($trade, 'fee_amount_quote');
        if ($feeCost !== null) {
            $fee = array(
                'currency' => $feeCurrency,
                'cost' => $feeCost,
            );
        }
        $orderId = $this->safe_string($trade, 'order_id');
        $type = $this->safe_string($trade, 'type');
        $side = $this->safe_string($trade, 'side');
        return array(
            'timestamp' => $timestamp,
            'datetime' => $this->iso8601($timestamp),
            'symbol' => $symbol,
            'id' => $id,
            'order' => $orderId,
            'type' => $type,
            'side' => $side,
            'takerOrMaker' => $takerOrMaker,
            'price' => $price,
            'amount' => $amount,
            'cost' => $cost,
            'fee' => $fee,
            'info' => $trade,
        );
    }

    public function fetch_trades($symbol, $since = null, $limit = null, $params = array ()) {
        $this->load_markets();
        $market = $this->market($symbol);
        $request = array(
            'pair' => $market['id'],
        );
        $response = $this->publicGetPairTransactions (array_merge($request, $params));
        $data = $this->safe_value($response, 'data', array());
        $trades = $this->safe_value($data, 'transactions', array());
        return $this->parse_trades($trades, $market, $since, $limit);
    }

    public function parse_ohlcv($ohlcv, $market = null) {
        //
        //     array(
        //         "0.02501786",
        //         "0.02501786",
        //         "0.02501786",
        //         "0.02501786",
        //         "0.0000",
        //         1591488000000
        //     )
        //
        return array(
            $this->safe_integer($ohlcv, 5),
            $this->safe_float($ohlcv, 0),
            $this->safe_float($ohlcv, 1),
            $this->safe_float($ohlcv, 2),
            $this->safe_float($ohlcv, 3),
            $this->safe_float($ohlcv, 4),
        );
    }

    public function fetch_ohlcv($symbol, $timeframe = '5m', $since = null, $limit = null, $params = array ()) {
        $this->load_markets();
        $market = $this->market($symbol);
        $date = $this->milliseconds();
        $date = $this->ymd($date);
        $date = explode('-', $date);
        $request = array(
            'pair' => $market['id'],
            'candletype' => $this->timeframes[$timeframe],
            'yyyymmdd' => implode('', $date),
        );
        $response = $this->publicGetPairCandlestickCandletypeYyyymmdd (array_merge($request, $params));
        //
        //     {
        //         "success":1,
        //         "$data":{
        //             "$candlestick":[
        //                 {
        //                     "type":"5min",
        //                     "$ohlcv":[
        //                         ["0.02501786","0.02501786","0.02501786","0.02501786","0.0000",1591488000000],
        //                         ["0.02501747","0.02501953","0.02501747","0.02501953","0.3017",1591488300000],
        //                         ["0.02501762","0.02501762","0.02500392","0.02500392","0.1500",1591488600000],
        //                     ]
        //                 }
        //             ],
        //             "timestamp":1591508668190
        //         }
        //     }
        //
        $data = $this->safe_value($response, 'data', array());
        $candlestick = $this->safe_value($data, 'candlestick', array());
        $first = $this->safe_value($candlestick, 0, array());
        $ohlcv = $this->safe_value($first, 'ohlcv', array());
        return $this->parse_ohlcvs($ohlcv, $market, $timeframe, $since, $limit);
    }

    public function fetch_balance($params = array ()) {
        $this->load_markets();
        $response = $this->privateGetUserAssets ($params);
        $result = array( 'info' => $response );
        $data = $this->safe_value($response, 'data', array());
        $assets = $this->safe_value($data, 'assets', array());
        for ($i = 0; $i < count($assets); $i++) {
            $balance = $assets[$i];
            $currencyId = $this->safe_string($balance, 'asset');
            $code = $this->safe_currency_code($currencyId);
            $account = array(
                'free' => $this->safe_float($balance, 'free_amount'),
                'used' => $this->safe_float($balance, 'locked_amount'),
                'total' => $this->safe_float($balance, 'onhand_amount'),
            );
            $result[$code] = $account;
        }
        return $this->parse_balance($result);
    }

    public function parse_order_status($status) {
        $statuses = array(
            'UNFILLED' => 'open',
            'PARTIALLY_FILLED' => 'open',
            'FULLY_FILLED' => 'closed',
            'CANCELED_UNFILLED' => 'canceled',
            'CANCELED_PARTIALLY_FILLED' => 'canceled',
        );
        return $this->safe_string($statuses, $status, $status);
    }

    public function parse_order($order, $market = null) {
        $id = $this->safe_string($order, 'order_id');
        $marketId = $this->safe_string($order, 'pair');
        $symbol = null;
        if ($marketId && !$market && (is_array($this->marketsById) && array_key_exists($marketId, $this->marketsById))) {
            $market = $this->marketsById[$marketId];
        }
        if ($market !== null) {
            $symbol = $market['symbol'];
        }
        $timestamp = $this->safe_integer($order, 'ordered_at');
        $price = $this->safe_float($order, 'price');
        $amount = $this->safe_float($order, 'start_amount');
        $filled = $this->safe_float($order, 'executed_amount');
        $remaining = $this->safe_float($order, 'remaining_amount');
        $average = $this->safe_float($order, 'average_price');
        $cost = null;
        if ($filled !== null) {
            if ($average !== null) {
                $cost = $filled * $average;
            }
        }
        $status = $this->parse_order_status($this->safe_string($order, 'status'));
        $type = $this->safe_string_lower($order, 'type');
        $side = $this->safe_string_lower($order, 'side');
        return array(
            'id' => $id,
            'clientOrderId' => null,
            'datetime' => $this->iso8601($timestamp),
            'timestamp' => $timestamp,
            'lastTradeTimestamp' => null,
            'status' => $status,
            'symbol' => $symbol,
            'type' => $type,
            'timeInForce' => null,
            'postOnly' => null,
            'side' => $side,
            'price' => $price,
            'stopPrice' => null,
            'cost' => $cost,
            'average' => $average,
            'amount' => $amount,
            'filled' => $filled,
            'remaining' => $remaining,
            'trades' => null,
            'fee' => null,
            'info' => $order,
        );
    }

    public function create_order($symbol, $type, $side, $amount, $price = null, $params = array ()) {
        $this->load_markets();
        $market = $this->market($symbol);
        if ($price === null) {
            throw new InvalidOrder($this->id . ' createOrder() requires a $price argument for both $market and limit orders');
        }
        $request = array(
            'pair' => $market['id'],
            'amount' => $this->amount_to_precision($symbol, $amount),
            'price' => $this->price_to_precision($symbol, $price),
            'side' => $side,
            'type' => $type,
        );
        $response = $this->privatePostUserSpotOrder (array_merge($request, $params));
        $data = $this->safe_value($response, 'data');
        return $this->parse_order($data, $market);
    }

    public function cancel_order($id, $symbol = null, $params = array ()) {
        $this->load_markets();
        $market = $this->market($symbol);
        $request = array(
            'order_id' => $id,
            'pair' => $market['id'],
        );
        $response = $this->privatePostUserSpotCancelOrder (array_merge($request, $params));
        $data = $this->safe_value($response, 'data');
        return $data;
    }

    public function fetch_order($id, $symbol = null, $params = array ()) {
        $this->load_markets();
        $market = $this->market($symbol);
        $request = array(
            'order_id' => $id,
            'pair' => $market['id'],
        );
        $response = $this->privateGetUserSpotOrder (array_merge($request, $params));
        $data = $this->safe_value($response, 'data');
        return $this->parse_order($data, $market);
    }

    public function fetch_open_orders($symbol = null, $since = null, $limit = null, $params = array ()) {
        $this->load_markets();
        $market = $this->market($symbol);
        $request = array(
            'pair' => $market['id'],
        );
        if ($limit !== null) {
            $request['count'] = $limit;
        }
        if ($since !== null) {
            $request['since'] = intval($since / 1000);
        }
        $response = $this->privateGetUserSpotActiveOrders (array_merge($request, $params));
        $data = $this->safe_value($response, 'data', array());
        $orders = $this->safe_value($data, 'orders', array());
        return $this->parse_orders($orders, $market, $since, $limit);
    }

    public function fetch_my_trades($symbol = null, $since = null, $limit = null, $params = array ()) {
        $this->load_markets();
        $market = null;
        if ($symbol !== null) {
            $market = $this->market($symbol);
        }
        $request = array();
        if ($market !== null) {
            $request['pair'] = $market['id'];
        }
        if ($limit !== null) {
            $request['count'] = $limit;
        }
        if ($since !== null) {
            $request['since'] = intval($since / 1000);
        }
        $response = $this->privateGetUserSpotTradeHistory (array_merge($request, $params));
        $data = $this->safe_value($response, 'data', array());
        $trades = $this->safe_value($data, 'trades', array());
        return $this->parse_trades($trades, $market, $since, $limit);
    }

    public function fetch_deposit_address($code, $params = array ()) {
        $this->load_markets();
        $currency = $this->currency($code);
        $request = array(
            'asset' => $currency['id'],
        );
        $response = $this->privateGetUserWithdrawalAccount (array_merge($request, $params));
        $data = $this->safe_value($response, 'data', array());
        // Not sure about this if there could be more than one account...
        $accounts = $this->safe_value($data, 'accounts', array());
        $firstAccount = $this->safe_value($accounts, 0, array());
        $address = $this->safe_string($firstAccount, 'address');
        return array(
            'currency' => $currency,
            'address' => $address,
            'tag' => null,
            'info' => $response,
        );
    }

    public function withdraw($code, $amount, $address, $tag = null, $params = array ()) {
        if (!(is_array($params) && array_key_exists('uuid', $params))) {
            throw new ExchangeError($this->id . ' uuid is required for withdrawal');
        }
        $this->load_markets();
        $currency = $this->currency($code);
        $request = array(
            'asset' => $currency['id'],
            'amount' => $amount,
        );
        $response = $this->privatePostUserRequestWithdrawal (array_merge($request, $params));
        $data = $this->safe_value($response, 'data', array());
        $txid = $this->safe_string($data, 'txid');
        return array(
            'info' => $response,
            'id' => $txid,
        );
    }

    public function nonce() {
        return $this->milliseconds();
    }

    public function sign($path, $api = 'public', $method = 'GET', $params = array (), $headers = null, $body = null) {
        $query = $this->omit($params, $this->extract_params($path));
        $url = $this->urls['api'][$api] . '/';
        if ($api === 'public') {
            $url .= $this->implode_params($path, $params);
            if ($query) {
                $url .= '?' . $this->urlencode($query);
            }
        } else {
            $this->check_required_credentials();
            $nonce = (string) $this->nonce();
            $auth = $nonce;
            $url .= $this->version . '/' . $this->implode_params($path, $params);
            if ($method === 'POST') {
                $body = $this->json($query);
                $auth .= $body;
            } else {
                $auth .= '/' . $this->version . '/' . $path;
                if ($query) {
                    $query = $this->urlencode($query);
                    $url .= '?' . $query;
                    $auth .= '?' . $query;
                }
            }
            $headers = array(
                'Content-Type' => 'application/json',
                'ACCESS-KEY' => $this->apiKey,
                'ACCESS-NONCE' => $nonce,
                'ACCESS-SIGNATURE' => $this->hmac($this->encode($auth), $this->encode($this->secret)),
            );
        }
        return array( 'url' => $url, 'method' => $method, 'body' => $body, 'headers' => $headers );
    }

    public function request($path, $api = 'public', $method = 'GET', $params = array (), $headers = null, $body = null) {
        $response = $this->fetch2($path, $api, $method, $params, $headers, $body);
        $success = $this->safe_integer($response, 'success');
        $data = $this->safe_value($response, 'data');
        if (!$success || !$data) {
            $errorMessages = array(
                '10000' => 'URL does not exist',
                '10001' => 'A system error occurred. Please contact support',
                '10002' => 'Invalid JSON format. Please check the contents of transmission',
                '10003' => 'A system error occurred. Please contact support',
                '10005' => 'A timeout error occurred. Please wait for a while and try again',
                '20001' => 'API authentication failed',
                '20002' => 'Illegal API key',
                '20003' => 'API key does not exist',
                '20004' => 'API Nonce does not exist',
                '20005' => 'API signature does not exist',
                '20011' => 'Two-step verification failed',
                '20014' => 'SMS authentication failed',
                '30001' => 'Please specify the order quantity',
                '30006' => 'Please specify the order ID',
                '30007' => 'Please specify the order ID array',
                '30009' => 'Please specify the stock',
                '30012' => 'Please specify the order price',
                '30013' => 'Trade Please specify either',
                '30015' => 'Please specify the order type',
                '30016' => 'Please specify asset name',
                '30019' => 'Please specify uuid',
                '30039' => 'Please specify the amount to be withdrawn',
                '40001' => 'The order quantity is invalid',
                '40006' => 'Count value is invalid',
                '40007' => 'End time is invalid',
                '40008' => 'end_id Value is invalid',
                '40009' => 'The from_id value is invalid',
                '40013' => 'The order ID is invalid',
                '40014' => 'The order ID array is invalid',
                '40015' => 'Too many specified orders',
                '40017' => 'Incorrect issue name',
                '40020' => 'The order price is invalid',
                '40021' => 'The trading classification is invalid',
                '40022' => 'Start date is invalid',
                '40024' => 'The order type is invalid',
                '40025' => 'Incorrect asset name',
                '40028' => 'uuid is invalid',
                '40048' => 'The amount of withdrawal is illegal',
                '50003' => 'Currently, this account is in a state where you can not perform the operation you specified. Please contact support',
                '50004' => 'Currently, this account is temporarily registered. Please try again after registering your account',
                '50005' => 'Currently, this account is locked. Please contact support',
                '50006' => 'Currently, this account is locked. Please contact support',
                '50008' => 'User identification has not been completed',
                '50009' => 'Your order does not exist',
                '50010' => 'Can not cancel specified order',
                '50011' => 'API not found',
                '60001' => 'The number of possessions is insufficient',
                '60002' => 'It exceeds the quantity upper limit of the tender buying order',
                '60003' => 'The specified quantity exceeds the limit',
                '60004' => 'The specified quantity is below the threshold',
                '60005' => 'The specified price is above the limit',
                '60006' => 'The specified price is below the lower limit',
                '70001' => 'A system error occurred. Please contact support',
                '70002' => 'A system error occurred. Please contact support',
                '70003' => 'A system error occurred. Please contact support',
                '70004' => 'We are unable to accept orders as the transaction is currently suspended',
                '70005' => 'Order can not be accepted because purchase order is currently suspended',
                '70006' => 'We can not accept orders because we are currently unsubscribed ',
                '70009' => 'We are currently temporarily restricting orders to be carried out. Please use the limit order.',
                '70010' => 'We are temporarily raising the minimum order quantity as the system load is now rising.',
            );
            $errorClasses = $this->exceptions;
            $code = $this->safe_string($data, 'code');
            $message = $this->safe_string($errorMessages, $code, 'Error');
            $ErrorClass = $this->safe_value($errorClasses, $code);
            if ($ErrorClass !== null) {
                throw new $ErrorClass($message);
            } else {
                throw new ExchangeError($this->id . ' ' . $this->json($response));
            }
        }
        return $response;
    }
}
