text: 'use strict';
  
  //  ---------------------------------------------------------------------------
  
  const Exchange = require ('./base/Exchange');
  const { ExchangeError, AuthenticationError, InvalidNonce, InsufficientFunds, InvalidOrder, OrderNotFound, PermissionDenied } = require ('./base/errors');
  
  //  ---------------------------------------------------------------------------
  
  module.exports = class bitbank extends Exchange {
      describe () {
          return this.deepExtend (super.describe (), {
              'id': 'bitbank',
              'name': 'bitbank',
              'countries': [ 'JP' ],
              'version': 'v1',
              'has': {
                  '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': {
                  '1m': '1min',
                  '5m': '5min',
                  '15m': '15min',
                  '30m': '30min',
                  '1h': '1hour',
                  '4h': '4hour',
                  '8h': '8hour',
                  '12h': '12hour',
                  '1d': '1day',
                  '1w': '1week',
              },
              'urls': {
                  'logo': 'https://user-images.githubusercontent.com/1294454/37808081-b87f2d9c-2e59-11e8-894d-c1900b7584fe.jpg',
                  'api': {
                      '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': {
                  'public': {
                      'get': [
                          '{pair}/ticker',
                          '{pair}/depth',
                          '{pair}/transactions',
                          '{pair}/transactions/{yyyymmdd}',
                          '{pair}/candlestick/{candletype}/{yyyymmdd}',
                      ],
                  },
                  'private': {
                      'get': [
                          'user/assets',
                          'user/spot/order',
                          'user/spot/active_orders',
                          'user/spot/trade_history',
                          'user/withdrawal_account',
                      ],
                      'post': [
                          'user/spot/order',
                          'user/spot/cancel_order',
                          'user/spot/cancel_orders',
                          'user/spot/orders_info',
                          'user/request_withdrawal',
                      ],
                  },
              },
              'markets': {
                  'BCH/BTC': { 'id': 'bcc_btc', 'symbol': 'BCH/BTC', 'base': 'BCH', 'quote': 'BTC', 'baseId': 'bcc', 'quoteId': 'btc' },
                  'BCH/JPY': { 'id': 'bcc_jpy', 'symbol': 'BCH/JPY', 'base': 'BCH', 'quote': 'JPY', 'baseId': 'bcc', 'quoteId': 'jpy' },
                  'MONA/BTC': { 'id': 'mona_btc', 'symbol': 'MONA/BTC', 'base': 'MONA', 'quote': 'BTC', 'baseId': 'mona', 'quoteId': 'btc' },
                  'MONA/JPY': { 'id': 'mona_jpy', 'symbol': 'MONA/JPY', 'base': 'MONA', 'quote': 'JPY', 'baseId': 'mona', 'quoteId': 'jpy' },
                  'QTUM/BTC': { 'id': 'qtum_btc', 'symbol': 'QTUM/BTC', 'base': 'QTUM', 'quote': 'BTC', 'baseId': 'qtum', 'quoteId': 'btc' },
                  'QTUM/JPY': { 'id': 'qtum_jpy', 'symbol': 'QTUM/JPY', 'base': 'QTUM', 'quote': 'JPY', 'baseId': 'qtum', 'quoteId': 'jpy' },
                  'ETH/BTC': { 'id': 'eth_btc', 'symbol': 'ETH/BTC', 'base': 'ETH', 'quote': 'BTC', 'baseId': 'eth', 'quoteId': 'btc' },
                  'LTC/BTC': { 'id': 'ltc_btc', 'symbol': 'LTC/BTC', 'base': 'LTC', 'quote': 'BTC', 'baseId': 'ltc', 'quoteId': 'btc' },
                  'XRP/JPY': { 'id': 'xrp_jpy', 'symbol': 'XRP/JPY', 'base': 'XRP', 'quote': 'JPY', 'baseId': 'xrp', 'quoteId': 'jpy' },
                  'XLM/JPY': { 'id': 'xlm_jpy', 'symbol': 'XLM/JPY', 'base': 'XLM', 'quote': 'JPY', 'baseId': 'xlm', 'quoteId': 'jpy' },
                  'BTC/JPY': { 'id': 'btc_jpy', 'symbol': 'BTC/JPY', 'base': 'BTC', 'quote': 'JPY', 'baseId': 'btc', 'quoteId': 'jpy' },
                  'ETH/JPY': { 'id': 'eth_jpy', 'symbol': 'ETH/JPY', 'base': 'ETH', 'quote': 'JPY', 'baseId': 'eth', 'quoteId': 'jpy' },
                  'LTC/JPY': { 'id': 'ltc_jpy', 'symbol': 'LTC/JPY', 'base': 'LTC', 'quote': 'JPY', 'baseId': 'ltc', 'quoteId': 'jpy' },
                  'XRP/BTC': { 'id': 'xrp_btc', 'symbol': 'XRP/BTC', 'base': 'XRP', 'quote': 'BTC', 'baseId': 'xrp', 'quoteId': 'btc' },
              },
              'fees': {
                  'trading': {
                      'maker': -0.02 / 100,
                      'taker': 0.12 / 100,
                  },
                  'funding': {
                      'withdraw': {
                          // 'JPY': (amount > 30000) ? 756 : 540,
                          'BTC': 0.001,
                          'LTC': 0.001,
                          'XRP': 0.15,
                          'ETH': 0.0005,
                          'MONA': 0.001,
                          'BCC': 0.001,
                      },
                  },
              },
              'precision': {
                  'price': 8,
                  'amount': 8,
              },
              'exceptions': {
                  '20001': AuthenticationError,
                  '20002': AuthenticationError,
                  '20003': AuthenticationError,
                  '20005': AuthenticationError,
                  '20004': InvalidNonce,
                  '40020': InvalidOrder,
                  '40021': InvalidOrder,
                  '40025': ExchangeError,
                  '40013': OrderNotFound,
                  '40014': OrderNotFound,
                  '50008': PermissionDenied,
                  '50009': OrderNotFound,
                  '50010': OrderNotFound,
                  '60001': InsufficientFunds,
                  '60005': InvalidOrder,
              },
          });
      }
  
      parseTicker (ticker, market = undefined) {
          let symbol = undefined;
          if (market !== undefined) {
              symbol = market['symbol'];
          }
          const timestamp = this.safeInteger (ticker, 'timestamp');
          const last = this.safeFloat (ticker, 'last');
          return {
              'symbol': symbol,
              'timestamp': timestamp,
              'datetime': this.iso8601 (timestamp),
              'high': this.safeFloat (ticker, 'high'),
              'low': this.safeFloat (ticker, 'low'),
              'bid': this.safeFloat (ticker, 'buy'),
              'bidVolume': undefined,
              'ask': this.safeFloat (ticker, 'sell'),
              'askVolume': undefined,
              'vwap': undefined,
              'open': undefined,
              'close': last,
              'last': last,
              'previousClose': undefined,
              'change': undefined,
              'percentage': undefined,
              'average': undefined,
              'baseVolume': this.safeFloat (ticker, 'vol'),
              'quoteVolume': undefined,
              'info': ticker,
          };
      }
  
      async fetchTicker (symbol, params = {}) {
          await this.loadMarkets ();
          const market = this.market (symbol);
          const request = {
              'pair': market['id'],
          };
          const response = await this.publicGetPairTicker (this.extend (request, params));
          const data = this.safeValue (response, 'data', {});
          return this.parseTicker (data, market);
      }
  
      async fetchOrderBook (symbol, limit = undefined, params = {}) {
          await this.loadMarkets ();
          const request = {
              'pair': this.marketId (symbol),
          };
          const response = await this.publicGetPairDepth (this.extend (request, params));
          const orderbook = this.safeValue (response, 'data', {});
          const timestamp = this.safeInteger (orderbook, 'timestamp');
          return this.parseOrderBook (orderbook, timestamp);
      }
  
      parseTrade (trade, market = undefined) {
          const timestamp = this.safeInteger (trade, 'executed_at');
          let symbol = undefined;
          let feeCurrency = undefined;
          if (market !== undefined) {
              symbol = market['symbol'];
              feeCurrency = market['quote'];
          }
          const price = this.safeFloat (trade, 'price');
          const amount = this.safeFloat (trade, 'amount');
          let cost = undefined;
          if (price !== undefined) {
              if (amount !== undefined) {
                  cost = parseFloat (this.costToPrecision (symbol, price * amount));
              }
          }
          const id = this.safeString2 (trade, 'transaction_id', 'trade_id');
          const takerOrMaker = this.safeString (trade, 'maker_taker');
          let fee = undefined;
          const feeCost = this.safeFloat (trade, 'fee_amount_quote');
          if (feeCost !== undefined) {
              fee = {
                  'currency': market['quote'],
                  'cost': feeCurrency,
              };
          }
          const orderId = this.safeString (trade, 'order_id');
          const type = this.safeString (trade, 'type');
          const side = this.safeString (trade, 'side');
          return {
              '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,
          };
      }
  
      async fetchTrades (symbol, since = undefined, limit = undefined, params = {}) {
          await this.loadMarkets ();
          const market = this.market (symbol);
          const request = {
              'pair': market['id'],
          };
          const response = await this.publicGetPairTransactions (this.extend (request, params));
          const data = this.safeValue (response, 'data', {});
          const trades = this.safeValue (data, 'transactions', []);
          return this.parseTrades (trades, market, since, limit);
      }
  
      parseOHLCV (ohlcv, market = undefined) {
          //
          //     [
          //         "0.02501786",
          //         "0.02501786",
          //         "0.02501786",
          //         "0.02501786",
          //         "0.0000",
          //         1591488000000
          //     ]
          //
          return [
              this.safeInteger (ohlcv, 5),
              this.safeFloat (ohlcv, 0),
              this.safeFloat (ohlcv, 1),
              this.safeFloat (ohlcv, 2),
              this.safeFloat (ohlcv, 3),
              this.safeFloat (ohlcv, 4),
          ];
      }
  
      async fetchOHLCV (symbol, timeframe = '5m', since = undefined, limit = undefined, params = {}) {
          await this.loadMarkets ();
          const market = this.market (symbol);
          let date = this.milliseconds ();
          date = this.ymd (date);
          date = date.split ('-');
          const request = {
              'pair': market['id'],
              'candletype': this.timeframes[timeframe],
              'yyyymmdd': date.join (''),
          };
          const response = await this.publicGetPairCandlestickCandletypeYyyymmdd (this.extend (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
          //         }
          //     }
          //
          const data = this.safeValue (response, 'data', {});
          const candlestick = this.safeValue (data, 'candlestick', []);
          const first = this.safeValue (candlestick, 0, {});
          const ohlcv = this.safeValue (first, 'ohlcv', []);
          return this.parseOHLCVs (ohlcv, market, timeframe, since, limit);
      }
  
      async fetchBalance (params = {}) {
          await this.loadMarkets ();
          const response = await this.privateGetUserAssets (params);
          const result = { 'info': response };
          const data = this.safeValue (response, 'data', {});
          const assets = this.safeValue (data, 'assets', []);
          for (let i = 0; i < assets.length; i++) {
              const balance = assets[i];
              const currencyId = this.safeString (balance, 'asset');
              const code = this.safeCurrencyCode (currencyId);
              const account = {
                  'free': this.safeFloat (balance, 'free_amount'),
                  'used': this.safeFloat (balance, 'locked_amount'),
                  'total': this.safeFloat (balance, 'onhand_amount'),
              };
              result[code] = account;
          }
          return this.parseBalance (result);
      }
  
      parseOrderStatus (status) {
          const statuses = {
              'UNFILLED': 'open',
              'PARTIALLY_FILLED': 'open',
              'FULLY_FILLED': 'closed',
              'CANCELED_UNFILLED': 'canceled',
              'CANCELED_PARTIALLY_FILLED': 'canceled',
          };
          return this.safeString (statuses, status, status);
      }
  
      parseOrder (order, market = undefined) {
          const id = this.safeString (order, 'order_id');
          const marketId = this.safeString (order, 'pair');
          let symbol = undefined;
          if (marketId && !market && (marketId in this.marketsById)) {
              market = this.marketsById[marketId];
          }
          if (market !== undefined) {
              symbol = market['symbol'];
          }
          const timestamp = this.safeInteger (order, 'ordered_at');
          const price = this.safeFloat (order, 'price');
          const amount = this.safeFloat (order, 'start_amount');
          const filled = this.safeFloat (order, 'executed_amount');
          const remaining = this.safeFloat (order, 'remaining_amount');
          const average = this.safeFloat (order, 'average_price');
          let cost = undefined;
          if (filled !== undefined) {
              if (average !== undefined) {
                  cost = filled * average;
              }
          }
          const status = this.parseOrderStatus (this.safeString (order, 'status'));
          const type = this.safeStringLower (order, 'type');
          const side = this.safeStringLower (order, 'side');
          return {
              'id': id,
              'clientOrderId': undefined,
              'datetime': this.iso8601 (timestamp),
              'timestamp': timestamp,
              'lastTradeTimestamp': undefined,
              'status': status,
              'symbol': symbol,
              'type': type,
              'timeInForce': undefined,
              'postOnly': undefined,
              'side': side,
              'price': price,
              'stopPrice': undefined,
              'cost': cost,
              'average': average,
              'amount': amount,
              'filled': filled,
              'remaining': remaining,
              'trades': undefined,
              'fee': undefined,
              'info': order,
          };
      }
  
      async createOrder (symbol, type, side, amount, price = undefined, params = {}) {
          await this.loadMarkets ();
          const market = this.market (symbol);
          if (price === undefined) {
              throw new InvalidOrder (this.id + ' createOrder() requires a price argument for both market and limit orders');
          }
          const request = {
              'pair': market['id'],
              'amount': this.amountToPrecision (symbol, amount),
              'price': this.priceToPrecision (symbol, price),
              'side': side,
              'type': type,
          };
          const response = await this.privatePostUserSpotOrder (this.extend (request, params));
          const data = this.safeValue (response, 'data');
          return this.parseOrder (data, market);
      }
  
      async cancelOrder (id, symbol = undefined, params = {}) {
          await this.loadMarkets ();
          const market = this.market (symbol);
          const request = {
              'order_id': id,
              'pair': market['id'],
          };
          const response = await this.privatePostUserSpotCancelOrder (this.extend (request, params));
          const data = this.safeValue (response, 'data');
          return data;
      }
  
      async fetchOrder (id, symbol = undefined, params = {}) {
          await this.loadMarkets ();
          const market = this.market (symbol);
          const request = {
              'order_id': id,
              'pair': market['id'],
          };
          const response = await this.privateGetUserSpotOrder (this.extend (request, params));
          const data = this.safeValue (response, 'data');
          return this.parseOrder (data, market);
      }
  
      async fetchOpenOrders (symbol = undefined, since = undefined, limit = undefined, params = {}) {
          await this.loadMarkets ();
          const market = this.market (symbol);
          const request = {
              'pair': market['id'],
          };
          if (limit !== undefined) {
              request['count'] = limit;
          }
          if (since !== undefined) {
              request['since'] = parseInt (since / 1000);
          }
          const response = await this.privateGetUserSpotActiveOrders (this.extend (request, params));
          const data = this.safeValue (response, 'data', {});
          const orders = this.safeValue (data, 'orders', []);
          return this.parseOrders (orders, market, since, limit);
      }
  
      async fetchMyTrades (symbol = undefined, since = undefined, limit = undefined, params = {}) {
          await this.loadMarkets ();
          let market = undefined;
          if (symbol !== undefined) {
              market = this.market (symbol);
          }
          const request = {};
          if (market !== undefined) {
              request['pair'] = market['id'];
          }
          if (limit !== undefined) {
              request['count'] = limit;
          }
          if (since !== undefined) {
              request['since'] = parseInt (since / 1000);
          }
          const response = await this.privateGetUserSpotTradeHistory (this.extend (request, params));
          const data = this.safeValue (response, 'data', {});
          const trades = this.safeValue (data, 'trades', []);
          return this.parseTrades (trades, market, since, limit);
      }
  
      async fetchDepositAddress (code, params = {}) {
          await this.loadMarkets ();
          const currency = this.currency (code);
          const request = {
              'asset': currency['id'],
          };
          const response = await this.privateGetUserWithdrawalAccount (this.extend (request, params));
          const data = this.safeValue (response, 'data', {});
          // Not sure about this if there could be more than one account...
          const accounts = this.safeValue (data, 'accounts', []);
          const firstAccount = this.safeValue (accounts, 0, {});
          const address = this.safeString (firstAccount, 'address');
          return {
              'currency': currency,
              'address': address,
              'tag': undefined,
              'info': response,
          };
      }
  
      async withdraw (code, amount, address, tag = undefined, params = {}) {
          if (!('uuid' in params)) {
              throw new ExchangeError (this.id + ' uuid is required for withdrawal');
          }
          await this.loadMarkets ();
          const currency = this.currency (code);
          const request = {
              'asset': currency['id'],
              'amount': amount,
          };
          const response = await this.privatePostUserRequestWithdrawal (this.extend (request, params));
          const data = this.safeValue (response, 'data', {});
          const txid = this.safeString (data, 'txid');
          return {
              'info': response,
              'id': txid,
          };
      }
  
      nonce () {
          return this.milliseconds ();
      }
  
      sign (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
          let query = this.omit (params, this.extractParams (path));
          let url = this.urls['api'][api] + '/';
          if (api === 'public') {
              url += this.implodeParams (path, params);
              if (Object.keys (query).length) {
                  url += '?' + this.urlencode (query);
              }
          } else {
              this.checkRequiredCredentials ();
              const nonce = this.nonce ().toString ();
              let auth = nonce;
              url += this.version + '/' + this.implodeParams (path, params);
              if (method === 'POST') {
                  body = this.json (query);
                  auth += body;
              } else {
                  auth += '/' + this.version + '/' + path;
                  if (Object.keys (query).length) {
                      query = this.urlencode (query);
                      url += '?' + query;
                      auth += '?' + query;
                  }
              }
              headers = {
                  'Content-Type': 'application/json',
                  'ACCESS-KEY': this.apiKey,
                  'ACCESS-NONCE': nonce,
                  'ACCESS-SIGNATURE': this.hmac (this.encode (auth), this.encode (this.secret)),
              };
          }
          return { 'url': url, 'method': method, 'body': body, 'headers': headers };
      }
  
      async request (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
          const response = await this.fetch2 (path, api, method, params, headers, body);
          const success = this.safeInteger (response, 'success');
          const data = this.safeValue (response, 'data');
          if (!success || !data) {
              const errorMessages = {
                  '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.',
              };
              const errorClasses = this.exceptions;
              const code = this.safeString (data, 'code');
              const message = this.safeString (errorMessages, code, 'Error');
              const ErrorClass = this.safeValue (errorClasses, code);
              if (ErrorClass !== undefined) {
                  throw new ErrorClass (message);
              } else {
                  throw new ExchangeError (this.id + ' ' + this.json (response));
              }
          }
          return response;
      }
  };
  