btcbox.js

"use strict";

//  ---------------------------------------------------------------------------

const Exchange = require ('./base/Exchange');
const { ExchangeError } = require ('./base/errors');

//  ---------------------------------------------------------------------------

module.exports = class btcbox extends Exchange {

    describe () {
        return this.deepExtend (super.describe (), {
            'id': 'btcbox',
            'name': 'BtcBox',
            'countries': 'JP',
            'rateLimit': 1000,
            'version': 'v1',
            'has': {
                'CORS': false,
                'fetchOHLCV': false,
            },
            'urls': {
                'logo': 'https://user-images.githubusercontent.com/1294454/31275803-4df755a8-aaa1-11e7-9abb-11ec2fad9f2d.jpg',
                'api': 'https://www.btcbox.co.jp/api',
                'www': 'https://www.btcbox.co.jp/',
                'doc': 'https://www.btcbox.co.jp/help/asm',
            },
            'api': {
                'public': {
                    'get': [
                        'depth',
                        'orders',
                        'ticker',
                        'allticker',
                    ],
                },
                'private': {
                    'post': [
                        'balance',
                        'trade_add',
                        'trade_cancel',
                        'trade_list',
                        'trade_view',
                        'wallet',
                    ],
                },
            },
            'markets': {
                'BTC/JPY': { 'id': 'BTC/JPY', 'symbol': 'BTC/JPY', 'base': 'BTC', 'quote': 'JPY' },
            },
        });
    }

    async fetchBalance (params = {}) {
        await this.loadMarkets ();
        let balances = await this.privatePostBalance ();
        let result = { 'info': balances };
        let currencies = Object.keys (this.currencies);
        for (let i = 0; i < currencies.length; i++) {
            let currency = currencies[i];
            let lowercase = currency.toLowerCase ();
            if (lowercase == 'dash')
                lowercase = 'drk';
            let account = this.account ();
            let free = lowercase + '_balance';
            let used = lowercase + '_lock';
            if (free in balances)
                account['free'] = parseFloat (balances[free]);
            if (used in balances)
                account['used'] = parseFloat (balances[used]);
            account['total'] = this.sum (account['free'], account['used']);
            result[currency] = account;
        }
        return this.parseBalance (result);
    }

    async fetchOrderBook (symbol, params = {}) {
        await this.loadMarkets ();
        let market = this.market (symbol);
        let request = {};
        let numSymbols = this.symbols.length;
        if (numSymbols > 1)
            request['coin'] = market['id'];
        let orderbook = await this.publicGetDepth (this.extend (request, params));
        let result = this.parseOrderBook (orderbook);
        result['asks'] = this.sortBy (result['asks'], 0);
        return result;
    }

    parseTicker (ticker, market = undefined) {
        let timestamp = this.milliseconds ();
        let symbol = undefined;
        if (market)
            symbol = market['symbol'];
        return {
            'symbol': symbol,
            'timestamp': timestamp,
            'datetime': this.iso8601 (timestamp),
            'high': this.safeFloat (ticker, 'high'),
            'low': this.safeFloat (ticker, 'low'),
            'bid': this.safeFloat (ticker, 'buy'),
            'ask': this.safeFloat (ticker, 'sell'),
            'vwap': undefined,
            'open': undefined,
            'close': undefined,
            'first': undefined,
            'last': this.safeFloat (ticker, 'last'),
            'change': undefined,
            'percentage': undefined,
            'average': undefined,
            'baseVolume': this.safeFloat (ticker, 'vol'),
            'quoteVolume': this.safeFloat (ticker, 'volume'),
            'info': ticker,
        };
    }

    async fetchTickers (symbols = undefined, params = {}) {
        await this.loadMarkets ();
        let tickers = await this.publicGetAllticker (params);
        let ids = Object.keys (tickers);
        let result = {};
        for (let i = 0; i < ids.length; i++) {
            let id = ids[i];
            let market = this.markets_by_id[id];
            let symbol = market['symbol'];
            let ticker = tickers[id];
            result[symbol] = this.parseTicker (ticker, market);
        }
        return result;
    }

    async fetchTicker (symbol, params = {}) {
        await this.loadMarkets ();
        let market = this.market (symbol);
        let request = {};
        let numSymbols = this.symbols.length;
        if (numSymbols > 1)
            request['coin'] = market['id'];
        let ticker = await this.publicGetTicker (this.extend (request, params));
        return this.parseTicker (ticker, market);
    }

    parseTrade (trade, market) {
        let timestamp = parseInt (trade['date']) * 1000;
        return {
            'info': trade,
            'id': trade['tid'],
            'order': undefined,
            'timestamp': timestamp,
            'datetime': this.iso8601 (timestamp),
            'symbol': market['symbol'],
            'type': undefined,
            'side': trade['type'],
            'price': trade['price'],
            'amount': trade['amount'],
        };
    }

    async fetchTrades (symbol, since = undefined, limit = undefined, params = {}) {
        await this.loadMarkets ();
        let market = this.market (symbol);
        let request = {};
        let numSymbols = this.symbols.length;
        if (numSymbols > 1)
            request['coin'] = market['id'];
        let response = await this.publicGetOrders (this.extend (request, params));
        return this.parseTrades (response, market, since, limit);
    }

    async createOrder (symbol, type, side, amount, price = undefined, params = {}) {
        await this.loadMarkets ();
        let market = this.market (symbol);
        let request = {
            'amount': amount,
            'price': price,
            'type': side,
        };
        let numSymbols = this.symbols.length;
        if (numSymbols > 1)
            request['coin'] = market['id'];
        let response = await this.privatePostTradeAdd (this.extend (request, params));
        return {
            'info': response,
            'id': response['id'],
        };
    }

    async cancelOrder (id, symbol = undefined, params = {}) {
        await this.loadMarkets ();
        return await this.privatePostTradeCancel (this.extend ({
            'id': id,
        }, params));
    }

    sign (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
        let url = this.urls['api'] + '/' + this.version + '/' + path;
        if (api == 'public') {
            if (Object.keys (params).length)
                url += '?' + this.urlencode (params);
        } else {
            this.checkRequiredCredentials ();
            let nonce = this.nonce ().toString ();
            let query = this.extend ({
                'key': this.apiKey,
                'nonce': nonce,
            }, params);
            let request = this.urlencode (query);
            let secret = this.hash (this.encode (this.secret));
            query['signature'] = this.hmac (this.encode (request), this.encode (secret));
            body = this.urlencode (query);
            headers = {
                'Content-Type': 'application/x-www-form-urlencoded',
            };
        }
        return { 'url': url, 'method': method, 'body': body, 'headers': headers };
    }

    async request (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
        let response = await this.fetch2 (path, api, method, params, headers, body);
        if ('result' in response)
            if (!response['result'])
                throw new ExchangeError (this.id + ' ' + this.json (response));
        return response;
    }
}