@jmparsons/ccxt
Version:
A JavaScript / Python / PHP cryptocurrency trading library with support for 100+ exchanges
216 lines (202 loc) • 8.1 kB
JavaScript
'use strict';
// ---------------------------------------------------------------------------
const Exchange = require ('./base/Exchange');
const { ExchangeError } = require ('./base/errors');
// ---------------------------------------------------------------------------
module.exports = class paymium extends Exchange {
describe () {
return this.deepExtend (super.describe (), {
'id': 'paymium',
'name': 'Paymium',
'countries': [ 'FR', 'EU' ],
'rateLimit': 2000,
'version': 'v1',
'has': {
'CORS': true,
},
'urls': {
'logo': 'https://user-images.githubusercontent.com/1294454/27790564-a945a9d4-5ff9-11e7-9d2d-b635763f2f24.jpg',
'api': 'https://paymium.com/api',
'www': 'https://www.paymium.com',
'doc': [
'https://github.com/Paymium/api-documentation',
'https://www.paymium.com/page/developers',
],
},
'api': {
'public': {
'get': [
'countries',
'data/{id}/ticker',
'data/{id}/trades',
'data/{id}/depth',
'bitcoin_charts/{id}/trades',
'bitcoin_charts/{id}/depth',
],
},
'private': {
'get': [
'merchant/get_payment/{UUID}',
'user',
'user/addresses',
'user/addresses/{btc_address}',
'user/orders',
'user/orders/{UUID}',
'user/price_alerts',
],
'post': [
'user/orders',
'user/addresses',
'user/payment_requests',
'user/price_alerts',
'merchant/create_payment',
],
'delete': [
'user/orders/{UUID}/cancel',
'user/price_alerts/{id}',
],
},
},
'markets': {
'BTC/EUR': { 'id': 'eur', 'symbol': 'BTC/EUR', 'base': 'BTC', 'quote': 'EUR' },
},
'fees': {
'trading': {
'maker': 0.0059,
'taker': 0.0059,
},
},
});
}
async fetchBalance (params = {}) {
let balances = await this.privateGetUser ();
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 ();
let account = this.account ();
let balance = 'balance_' + lowercase;
let locked = 'locked_' + lowercase;
if (balance in balances)
account['free'] = balances[balance];
if (locked in balances)
account['used'] = balances[locked];
account['total'] = this.sum (account['free'], account['used']);
result[currency] = account;
}
return this.parseBalance (result);
}
async fetchOrderBook (symbol, limit = undefined, params = {}) {
let orderbook = await this.publicGetDataIdDepth (this.extend ({
'id': this.marketId (symbol),
}, params));
return this.parseOrderBook (orderbook, undefined, 'bids', 'asks', 'price', 'amount');
}
async fetchTicker (symbol, params = {}) {
let ticker = await this.publicGetDataIdTicker (this.extend ({
'id': this.marketId (symbol),
}, params));
let timestamp = ticker['at'] * 1000;
let vwap = this.safeFloat (ticker, 'vwap');
let baseVolume = this.safeFloat (ticker, 'volume');
let quoteVolume = baseVolume * vwap;
let last = this.safeFloat (ticker, 'price');
return {
'symbol': symbol,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'high': this.safeFloat (ticker, 'high'),
'low': this.safeFloat (ticker, 'low'),
'bid': this.safeFloat (ticker, 'bid'),
'bidVolume': undefined,
'ask': this.safeFloat (ticker, 'ask'),
'askVolume': undefined,
'vwap': vwap,
'open': this.safeFloat (ticker, 'open'),
'close': last,
'last': last,
'previousClose': undefined,
'change': undefined,
'percentage': this.safeFloat (ticker, 'variation'),
'average': undefined,
'baseVolume': baseVolume,
'quoteVolume': quoteVolume,
'info': ticker,
};
}
parseTrade (trade, market) {
let timestamp = parseInt (trade['created_at_int']) * 1000;
let volume = 'traded_' + market['base'].toLowerCase ();
return {
'info': trade,
'id': trade['uuid'],
'order': undefined,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'symbol': market['symbol'],
'type': undefined,
'side': trade['side'],
'price': trade['price'],
'amount': trade[volume],
};
}
async fetchTrades (symbol, since = undefined, limit = undefined, params = {}) {
let market = this.market (symbol);
let response = await this.publicGetDataIdTrades (this.extend ({
'id': market['id'],
}, params));
return this.parseTrades (response, market, since, limit);
}
async createOrder (symbol, type, side, amount, price = undefined, params = {}) {
let order = {
'type': this.capitalize (type) + 'Order',
'currency': this.marketId (symbol),
'direction': side,
'amount': amount,
};
if (type === 'market')
order['price'] = price;
let response = await this.privatePostUserOrders (this.extend (order, params));
return {
'info': response,
'id': response['uuid'],
};
}
async cancelOrder (id, symbol = undefined, params = {}) {
return await this.privatePostCancelOrder (this.extend ({
'orderNumber': id,
}, params));
}
sign (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
let url = this.urls['api'] + '/' + this.version + '/' + this.implodeParams (path, params);
let query = this.omit (params, this.extractParams (path));
if (api === 'public') {
if (Object.keys (query).length)
url += '?' + this.urlencode (query);
} else {
this.checkRequiredCredentials ();
let nonce = this.nonce ().toString ();
let auth = nonce + url;
if (method === 'POST') {
if (Object.keys (query).length) {
body = this.json (query);
auth += body;
}
}
headers = {
'Api-Key': this.apiKey,
'Api-Signature': this.hmac (this.encode (auth), this.encode (this.secret)),
'Api-Nonce': nonce,
'Content-Type': 'application/json',
};
}
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 ('errors' in response)
throw new ExchangeError (this.id + ' ' + this.json (response));
return response;
}
};