@jmparsons/ccxt
Version:
A JavaScript / Python / PHP cryptocurrency trading library with support for 100+ exchanges
314 lines (297 loc) • 12.2 kB
JavaScript
'use strict';
// ---------------------------------------------------------------------------
const Exchange = require ('./base/Exchange');
const { ExchangeError } = require ('./base/errors');
// ---------------------------------------------------------------------------
module.exports = class mercado extends Exchange {
describe () {
return this.deepExtend (super.describe (), {
'id': 'mercado',
'name': 'Mercado Bitcoin',
'countries': 'BR', // Brazil
'rateLimit': 1000,
'version': 'v3',
'has': {
'CORS': true,
'createMarketOrder': false,
'fetchOrder': true,
'withdraw': true,
},
'urls': {
'logo': 'https://user-images.githubusercontent.com/1294454/27837060-e7c58714-60ea-11e7-9192-f05e86adb83f.jpg',
'api': {
'public': 'https://www.mercadobitcoin.net/api',
'private': 'https://www.mercadobitcoin.net/tapi',
},
'www': 'https://www.mercadobitcoin.com.br',
'doc': [
'https://www.mercadobitcoin.com.br/api-doc',
'https://www.mercadobitcoin.com.br/trade-api',
],
},
'api': {
'public': {
'get': [
'{coin}/orderbook/', // last slash critical
'{coin}/ticker/',
'{coin}/trades/',
'{coin}/trades/{from}/',
'{coin}/trades/{from}/{to}',
'{coin}/day-summary/{year}/{month}/{day}/',
],
},
'private': {
'post': [
'cancel_order',
'get_account_info',
'get_order',
'get_withdrawal',
'list_system_messages',
'list_orders',
'list_orderbook',
'place_buy_order',
'place_sell_order',
'withdraw_coin',
],
},
},
'markets': {
'BTC/BRL': { 'id': 'BRLBTC', 'symbol': 'BTC/BRL', 'base': 'BTC', 'quote': 'BRL', 'suffix': 'Bitcoin' },
'LTC/BRL': { 'id': 'BRLLTC', 'symbol': 'LTC/BRL', 'base': 'LTC', 'quote': 'BRL', 'suffix': 'Litecoin' },
'BCH/BRL': { 'id': 'BRLBCH', 'symbol': 'BCH/BRL', 'base': 'BCH', 'quote': 'BRL', 'suffix': 'BCash' },
},
'fees': {
'trading': {
'maker': 0.3 / 100,
'taker': 0.7 / 100,
},
},
});
}
async fetchOrderBook (symbol, limit = undefined, params = {}) {
let market = this.market (symbol);
let orderbook = await this.publicGetCoinOrderbook (this.extend ({
'coin': market['base'],
}, params));
return this.parseOrderBook (orderbook);
}
async fetchTicker (symbol, params = {}) {
let market = this.market (symbol);
let response = await this.publicGetCoinTicker (this.extend ({
'coin': market['base'],
}, params));
let ticker = response['ticker'];
let timestamp = parseInt (ticker['date']) * 1000;
let 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,
};
}
parseTrade (trade, market) {
let timestamp = trade['date'] * 1000;
return {
'info': trade,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'symbol': market['symbol'],
'id': trade['tid'].toString (),
'order': undefined,
'type': undefined,
'side': trade['type'],
'price': trade['price'],
'amount': trade['amount'],
};
}
async fetchTrades (symbol, since = undefined, limit = undefined, params = {}) {
let market = this.market (symbol);
let method = 'publicGetCoinTrades';
let request = {
'coin': market['base'],
};
if (typeof since !== 'undefined') {
method += 'From';
request['from'] = parseInt (since / 1000);
}
let to = this.safeInteger (params, 'to');
if (typeof to !== 'undefined')
method += 'To';
let response = await this[method] (this.extend (request, params));
return this.parseTrades (response, market, since, limit);
}
async fetchBalance (params = {}) {
let response = await this.privatePostGetAccountInfo ();
let balances = response['response_data']['balance'];
let result = { 'info': response };
let currencies = Object.keys (this.currencies);
for (let i = 0; i < currencies.length; i++) {
let currency = currencies[i];
let lowercase = currency.toLowerCase ();
let account = this.account ();
if (lowercase in balances) {
account['free'] = parseFloat (balances[lowercase]['available']);
account['total'] = parseFloat (balances[lowercase]['total']);
account['used'] = account['total'] - account['free'];
}
result[currency] = account;
}
return this.parseBalance (result);
}
async createOrder (symbol, type, side, amount, price = undefined, params = {}) {
if (type === 'market')
throw new ExchangeError (this.id + ' allows limit orders only');
let method = 'privatePostPlace' + this.capitalize (side) + 'Order';
let order = {
'coin_pair': this.marketId (symbol),
'quantity': amount,
'limit_price': price,
};
let response = await this[method] (this.extend (order, params));
return {
'info': response,
'id': response['response_data']['order']['order_id'].toString (),
};
}
async cancelOrder (id, symbol = undefined, params = {}) {
if (!symbol)
throw new ExchangeError (this.id + ' cancelOrder() requires a symbol argument');
await this.loadMarkets ();
let market = this.market (symbol);
return await this.privatePostCancelOrder (this.extend ({
'coin_pair': market['id'],
'order_id': id,
}, params));
}
parseOrder (order, market = undefined) {
let side = undefined;
if ('order_type' in order)
side = (order['order_type'] === 1) ? 'buy' : 'sell';
let status = order['status'];
let symbol = undefined;
if (!market) {
if ('coin_pair' in order)
if (order['coin_pair'] in this.markets_by_id)
market = this.markets_by_id[order['coin_pair']];
}
if (market)
symbol = market['symbol'];
let timestamp = undefined;
if ('created_timestamp' in order)
timestamp = parseInt (order['created_timestamp']) * 1000;
if ('updated_timestamp' in order)
timestamp = parseInt (order['updated_timestamp']) * 1000;
let fee = {
'cost': this.safeFloat (order, 'fee'),
'currency': market['quote'],
};
let price = this.safeFloat (order, 'limit_price');
// price = this.safeFloat (order, 'executed_price_avg', price);
let average = this.safeFloat (order, 'executed_price_avg');
let amount = this.safeFloat (order, 'quantity');
let filled = this.safeFloat (order, 'executed_quantity');
let remaining = amount - filled;
let cost = amount * average;
let result = {
'info': order,
'id': order['order_id'].toString (),
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'lastTradeTimestamp': undefined,
'symbol': symbol,
'type': 'limit',
'side': side,
'price': price,
'cost': cost,
'average': average,
'amount': amount,
'filled': filled,
'remaining': remaining,
'status': status,
'fee': fee,
};
return result;
}
async fetchOrder (id, symbol = undefined, params = {}) {
if (!symbol)
throw new ExchangeError (this.id + ' cancelOrder() requires a symbol argument');
await this.loadMarkets ();
let market = this.market (symbol);
let response = undefined;
response = await this.privatePostGetOrder (this.extend ({
'coin_pair': market['id'],
'order_id': parseInt (id),
}, params));
return this.parseOrder (response['response_data']['order']);
}
async withdraw (currency, amount, address, tag = undefined, params = {}) {
this.checkAddress (address);
await this.loadMarkets ();
let request = {
'coin': currency,
'quantity': amount.toFixed (10),
'address': address,
};
if (currency === 'BRL') {
let account_ref = ('account_ref' in params);
if (!account_ref)
throw new ExchangeError (this.id + ' requires account_ref parameter to withdraw ' + currency);
} else if (currency !== 'LTC') {
let tx_fee = ('tx_fee' in params);
if (!tx_fee)
throw new ExchangeError (this.id + ' requires tx_fee parameter to withdraw ' + currency);
}
let response = await this.privatePostWithdrawCoin (this.extend (request, params));
return {
'info': response,
'id': response['response_data']['withdrawal']['id'],
};
}
sign (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
let url = this.urls['api'][api] + '/';
let query = this.omit (params, this.extractParams (path));
if (api === 'public') {
url += this.implodeParams (path, params);
if (Object.keys (query).length)
url += '?' + this.urlencode (query);
} else {
this.checkRequiredCredentials ();
url += this.version + '/';
let nonce = this.nonce ();
body = this.urlencode (this.extend ({
'tapi_method': path,
'tapi_nonce': nonce,
}, params));
let auth = '/tapi/' + this.version + '/' + '?' + body;
headers = {
'Content-Type': 'application/x-www-form-urlencoded',
'TAPI-ID': this.apiKey,
'TAPI-MAC': this.hmac (this.encode (auth), this.encode (this.secret), 'sha512'),
};
}
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 ('error_message' in response)
throw new ExchangeError (this.id + ' ' + this.json (response));
return response;
}
};