consequunturatque
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A JavaScript / Python / PHP cryptocurrency trading library with support for 130+ exchanges
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JavaScript
'use strict';
// ---------------------------------------------------------------------------
const Exchange = require ('./base/Exchange');
const { ExchangeError, ArgumentsRequired, BadRequest, OrderNotFound, InvalidOrder, InvalidNonce, InsufficientFunds, AuthenticationError, PermissionDenied, NotSupported, OnMaintenance, RateLimitExceeded, ExchangeNotAvailable } = require ('./base/errors');
const { TICK_SIZE } = require ('./base/functions/number');
const Precise = require ('./base/Precise');
// ---------------------------------------------------------------------------
module.exports = class gemini extends Exchange {
describe () {
return this.deepExtend (super.describe (), {
'id': 'gemini',
'name': 'Gemini',
'countries': [ 'US' ],
'rateLimit': 1500, // 200 for private API
'version': 'v1',
'has': {
'cancelOrder': true,
'CORS': false,
'createDepositAddress': true,
'createMarketOrder': false,
'createOrder': true,
'fetchBalance': true,
'fetchBidsAsks': false,
'fetchClosedOrders': false,
'fetchDepositAddress': false,
'fetchDeposits': false,
'fetchMarkets': true,
'fetchMyTrades': true,
'fetchOHLCV': true,
'fetchOpenOrders': true,
'fetchOrder': true,
'fetchOrderBook': true,
'fetchOrders': false,
'fetchTicker': true,
'fetchTickers': true,
'fetchTrades': true,
'fetchTransactions': true,
'fetchWithdrawals': false,
'withdraw': true,
},
'urls': {
'logo': 'https://user-images.githubusercontent.com/1294454/27816857-ce7be644-6096-11e7-82d6-3c257263229c.jpg',
'api': {
'public': 'https://api.gemini.com',
'private': 'https://api.gemini.com',
'web': 'https://docs.gemini.com',
},
'www': 'https://gemini.com/',
'doc': [
'https://docs.gemini.com/rest-api',
'https://docs.sandbox.gemini.com',
],
'test': {
'public': 'https://api.sandbox.gemini.com',
'private': 'https://api.sandbox.gemini.com',
// use the true doc instead of the sandbox doc
// since they differ in parsing
// https://github.com/ccxt/ccxt/issues/7874
// https://github.com/ccxt/ccxt/issues/7894
'web': 'https://docs.gemini.com',
},
'fees': [
'https://gemini.com/api-fee-schedule',
'https://gemini.com/trading-fees',
'https://gemini.com/transfer-fees',
],
},
'api': {
'web': {
'get': [
'rest-api',
],
},
'public': {
'get': [
'v1/symbols',
'v1/pricefeed',
'v1/pubticker/{symbol}',
'v1/book/{symbol}',
'v1/trades/{symbol}',
'v1/auction/{symbol}',
'v1/auction/{symbol}/history',
'v2/candles/{symbol}/{timeframe}',
'v2/ticker/{symbol}',
],
},
'private': {
'post': [
'v1/order/new',
'v1/order/cancel',
'v1/order/cancel/session',
'v1/order/cancel/all',
'v1/order/status',
'v1/orders',
'v1/mytrades',
'v1/notionalvolume',
'v1/tradevolume',
'v1/transfers',
'v1/balances',
'v1/deposit/{currency}/newAddress',
'v1/withdraw/{currency}',
'v1/heartbeat',
'v1/transfers',
],
},
},
'precisionMode': TICK_SIZE,
'fees': {
'trading': {
'taker': 0.0035,
'maker': 0.001,
},
},
'httpExceptions': {
'400': BadRequest, // Auction not open or paused, ineligible timing, market not open, or the request was malformed, in the case of a private API request, missing or malformed Gemini private API authentication headers
'403': PermissionDenied, // The API key is missing the role necessary to access this private API endpoint
'404': OrderNotFound, // Unknown API entry point or Order not found
'406': InsufficientFunds, // Insufficient Funds
'429': RateLimitExceeded, // Rate Limiting was applied
'500': ExchangeError, // The server encountered an error
'502': ExchangeNotAvailable, // Technical issues are preventing the request from being satisfied
'503': OnMaintenance, // The exchange is down for maintenance
},
'timeframes': {
'1m': '1m',
'5m': '5m',
'15m': '15m',
'30m': '30m',
'1h': '1hr',
'6h': '6hr',
'1d': '1day',
},
'exceptions': {
'exact': {
'AuctionNotOpen': BadRequest, // Failed to place an auction-only order because there is no current auction open for this symbol
'ClientOrderIdTooLong': BadRequest, // The Client Order ID must be under 100 characters
'ClientOrderIdMustBeString': BadRequest, // The Client Order ID must be a string
'ConflictingOptions': BadRequest, // New orders using a combination of order execution options are not supported
'EndpointMismatch': BadRequest, // The request was submitted to an endpoint different than the one in the payload
'EndpointNotFound': BadRequest, // No endpoint was specified
'IneligibleTiming': BadRequest, // Failed to place an auction order for the current auction on this symbol because the timing is not eligible, new orders may only be placed before the auction begins.
'InsufficientFunds': InsufficientFunds, // The order was rejected because of insufficient funds
'InvalidJson': BadRequest, // The JSON provided is invalid
'InvalidNonce': InvalidNonce, // The nonce was not greater than the previously used nonce, or was not present
'InvalidOrderType': InvalidOrder, // An unknown order type was provided
'InvalidPrice': InvalidOrder, // For new orders, the price was invalid
'InvalidQuantity': InvalidOrder, // A negative or otherwise invalid quantity was specified
'InvalidSide': InvalidOrder, // For new orders, and invalid side was specified
'InvalidSignature': AuthenticationError, // The signature did not match the expected signature
'InvalidSymbol': BadRequest, // An invalid symbol was specified
'InvalidTimestampInPayload': BadRequest, // The JSON payload contained a timestamp parameter with an unsupported value.
'Maintenance': OnMaintenance, // The system is down for maintenance
'MarketNotOpen': InvalidOrder, // The order was rejected because the market is not accepting new orders
'MissingApikeyHeader': AuthenticationError, // The X-GEMINI-APIKEY header was missing
'MissingOrderField': InvalidOrder, // A required order_id field was not specified
'MissingRole': AuthenticationError, // The API key used to access this endpoint does not have the required role assigned to it
'MissingPayloadHeader': AuthenticationError, // The X-GEMINI-PAYLOAD header was missing
'MissingSignatureHeader': AuthenticationError, // The X-GEMINI-SIGNATURE header was missing
'NoSSL': AuthenticationError, // You must use HTTPS to access the API
'OptionsMustBeArray': BadRequest, // The options parameter must be an array.
'OrderNotFound': OrderNotFound, // The order specified was not found
'RateLimit': RateLimitExceeded, // Requests were made too frequently. See Rate Limits below.
'System': ExchangeError, // We are experiencing technical issues
'UnsupportedOption': BadRequest, // This order execution option is not supported.
},
'broad': {
'The Gemini Exchange is currently undergoing maintenance.': OnMaintenance, // The Gemini Exchange is currently undergoing maintenance. Please check https://status.gemini.com/ for more information.
'We are investigating technical issues with the Gemini Exchange.': ExchangeNotAvailable, // We are investigating technical issues with the Gemini Exchange. Please check https://status.gemini.com/ for more information.
},
},
'options': {
'fetchMarketsMethod': 'fetch_markets_from_web',
'fetchTickerMethod': 'fetchTickerV1', // fetchTickerV1, fetchTickerV2, fetchTickerV1AndV2
},
});
}
async fetchMarkets (params = {}) {
const method = this.safeValue (this.options, 'fetchMarketsMethod', 'fetch_markets_from_api');
return await this[method] (params);
}
async fetchMarketsFromWeb (params = {}) {
const response = await this.webGetRestApi (params);
const sections = response.split ('<h1 id="symbols-and-minimums">Symbols and minimums</h1>');
const numSections = sections.length;
const error = this.id + ' the ' + this.name + ' API doc HTML markup has changed, breaking the parser of order limits and precision info for ' + this.name + ' markets.';
if (numSections !== 2) {
throw new NotSupported (error);
}
const tables = sections[1].split ('tbody>');
const numTables = tables.length;
if (numTables < 2) {
throw new NotSupported (error);
}
const rows = tables[1].split ("\n<tr>\n"); // eslint-disable-line quotes
const numRows = rows.length;
if (numRows < 2) {
throw new NotSupported (error);
}
const result = [];
// skip the first element (empty string)
for (let i = 1; i < numRows; i++) {
const row = rows[i];
const cells = row.split ("</td>\n"); // eslint-disable-line quotes
const numCells = cells.length;
if (numCells < 5) {
throw new NotSupported (error);
}
// [
// '<td>btcusd', // currency
// '<td>0.00001 BTC (1e-5)', // min order size
// '<td>0.00000001 BTC (1e-8)', // tick size
// '<td>0.01 USD', // quote currency price increment
// '</tr>'
// ]
const marketId = cells[0].replace ('<td>', '');
// const base = this.safeCurrencyCode (baseId);
const minAmountString = cells[1].replace ('<td>', '');
const minAmountParts = minAmountString.split (' ');
const minAmount = this.safeNumber (minAmountParts, 0);
const amountPrecisionString = cells[2].replace ('<td>', '');
const amountPrecisionParts = amountPrecisionString.split (' ');
const amountPrecision = this.safeNumber (amountPrecisionParts, 0);
const idLength = marketId.length - 0;
const quoteId = marketId.slice (idLength - 3, idLength);
const quote = this.safeCurrencyCode (quoteId);
const pricePrecisionString = cells[3].replace ('<td>', '');
const pricePrecisionParts = pricePrecisionString.split (' ');
const pricePrecision = this.safeNumber (pricePrecisionParts, 0);
const baseId = marketId.replace (quoteId, '');
const base = this.safeCurrencyCode (baseId);
const symbol = base + '/' + quote;
const active = undefined;
result.push ({
'id': marketId,
'info': row,
'symbol': symbol,
'base': base,
'quote': quote,
'baseId': baseId,
'quoteId': quoteId,
'active': active,
'precision': {
'amount': amountPrecision,
'price': pricePrecision,
},
'limits': {
'amount': {
'min': minAmount,
'max': undefined,
},
'price': {
'min': undefined,
'max': undefined,
},
'cost': {
'min': undefined,
'max': undefined,
},
},
});
}
return result;
}
async fetchMarketsFromAPI (params = {}) {
const response = await this.publicGetV1Symbols (params);
const result = [];
for (let i = 0; i < response.length; i++) {
const marketId = response[i];
const market = marketId;
const idLength = marketId.length - 0;
const baseId = marketId.slice (0, idLength - 3);
const quoteId = marketId.slice (idLength - 3, idLength);
const base = this.safeCurrencyCode (baseId);
const quote = this.safeCurrencyCode (quoteId);
const symbol = base + '/' + quote;
const precision = {
'amount': undefined,
'price': undefined,
};
result.push ({
'id': marketId,
'info': market,
'symbol': symbol,
'base': base,
'quote': quote,
'baseId': baseId,
'quoteId': quoteId,
'precision': precision,
'limits': {
'amount': {
'min': undefined,
'max': undefined,
},
'price': {
'min': undefined,
'max': undefined,
},
'cost': {
'min': undefined,
'max': undefined,
},
},
'active': undefined,
});
}
return result;
}
async fetchOrderBook (symbol, limit = undefined, params = {}) {
await this.loadMarkets ();
const request = {
'symbol': this.marketId (symbol),
};
if (limit !== undefined) {
request['limit_bids'] = limit;
request['limit_asks'] = limit;
}
const response = await this.publicGetV1BookSymbol (this.extend (request, params));
return this.parseOrderBook (response, symbol, undefined, 'bids', 'asks', 'price', 'amount');
}
async fetchTickerV1 (symbol, params = {}) {
await this.loadMarkets ();
const market = this.market (symbol);
const request = {
'symbol': market['id'],
};
const response = await this.publicGetV1PubtickerSymbol (this.extend (request, params));
//
// {
// "bid":"9117.95",
// "ask":"9117.96",
// "volume":{
// "BTC":"1615.46861748",
// "USD":"14727307.57545006088",
// "timestamp":1594982700000
// },
// "last":"9115.23"
// }
//
return this.parseTicker (response, market);
}
async fetchTickerV2 (symbol, params = {}) {
await this.loadMarkets ();
const market = this.market (symbol);
const request = {
'symbol': market['id'],
};
const response = await this.publicGetV2TickerSymbol (this.extend (request, params));
//
// {
// "symbol":"BTCUSD",
// "open":"9080.58",
// "high":"9184.53",
// "low":"9063.56",
// "close":"9116.08",
// // Hourly prices descending for past 24 hours
// "changes":["9117.33","9105.69","9106.23","9120.35","9098.57","9114.53","9113.55","9128.01","9113.63","9133.49","9133.49","9137.75","9126.73","9103.91","9119.33","9123.04","9124.44","9117.57","9114.22","9102.33","9076.67","9074.72","9074.97","9092.05"],
// "bid":"9115.86",
// "ask":"9115.87"
// }
//
return this.parseTicker (response, market);
}
async fetchTickerV1AndV2 (symbol, params = {}) {
const tickerA = await this.fetchTickerV1 (symbol, params);
const tickerB = await this.fetchTickerV2 (symbol, params);
return this.deepExtend (tickerA, {
'open': tickerB['open'],
'high': tickerB['high'],
'low': tickerB['low'],
'change': tickerB['change'],
'percentage': tickerB['percentage'],
'average': tickerB['average'],
'info': tickerB['info'],
});
}
async fetchTicker (symbol, params = {}) {
const method = this.safeValue (this.options, 'fetchTickerMethod', 'fetchTickerV1');
return await this[method] (symbol, params);
}
parseTicker (ticker, market = undefined) {
//
// fetchTickers
//
// {
// "pair": "BATUSD",
// "price": "0.20687",
// "percentChange24h": "0.0146"
// }
//
// fetchTickerV1
//
// {
// "bid":"9117.95",
// "ask":"9117.96",
// "volume":{
// "BTC":"1615.46861748",
// "USD":"14727307.57545006088",
// "timestamp":1594982700000
// },
// "last":"9115.23"
// }
//
// fetchTickerV2
//
// {
// "symbol":"BTCUSD",
// "open":"9080.58",
// "high":"9184.53",
// "low":"9063.56",
// "close":"9116.08",
// // Hourly prices descending for past 24 hours
// "changes":["9117.33","9105.69","9106.23","9120.35","9098.57","9114.53","9113.55","9128.01","9113.63","9133.49","9133.49","9137.75","9126.73","9103.91","9119.33","9123.04","9124.44","9117.57","9114.22","9102.33","9076.67","9074.72","9074.97","9092.05"],
// "bid":"9115.86",
// "ask":"9115.87"
// }
//
const volume = this.safeValue (ticker, 'volume', {});
const timestamp = this.safeInteger (volume, 'timestamp');
let symbol = undefined;
const marketId = this.safeString (ticker, 'pair');
let baseId = undefined;
let quoteId = undefined;
let base = undefined;
let quote = undefined;
if (marketId !== undefined) {
if (marketId in this.markets_by_id) {
market = this.markets_by_id[marketId];
} else {
const idLength = marketId.length - 0;
if (idLength === 7) {
baseId = marketId.slice (0, 4);
quoteId = marketId.slice (4, 7);
} else {
baseId = marketId.slice (0, 3);
quoteId = marketId.slice (3, 6);
}
base = this.safeCurrencyCode (baseId);
quote = this.safeCurrencyCode (quoteId);
symbol = base + '/' + quote;
}
}
if ((symbol === undefined) && (market !== undefined)) {
symbol = market['symbol'];
baseId = market['baseId'].toUpperCase ();
quoteId = market['quoteId'].toUpperCase ();
base = market['base'];
quote = market['quote'];
}
const price = this.safeNumber (ticker, 'price');
const last = this.safeNumber2 (ticker, 'last', 'close', price);
let percentage = this.safeNumber (ticker, 'percentChange24h');
let change = undefined;
let open = this.safeNumber (ticker, 'open');
let average = undefined;
if (last !== undefined) {
if (open !== undefined) {
change = last - open;
if (open !== 0) {
percentage = change / open * 100;
}
average = this.sum (last, open) / 2;
} else if (percentage !== undefined) {
change = last * percentage;
if (open === undefined) {
open = last - change;
}
average = this.sum (last, open) / 2;
}
}
const baseVolume = this.safeNumber (volume, baseId);
const quoteVolume = this.safeNumber (volume, quoteId);
const vwap = this.vwap (baseVolume, quoteVolume);
return {
'symbol': symbol,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'high': this.safeNumber (ticker, 'high'),
'low': this.safeNumber (ticker, 'low'),
'bid': this.safeNumber (ticker, 'bid'),
'bidVolume': undefined,
'ask': this.safeNumber (ticker, 'ask'),
'askVolume': undefined,
'vwap': vwap,
'open': open,
'close': last,
'last': last,
'previousClose': undefined, // previous day close
'change': change,
'percentage': percentage,
'average': average,
'baseVolume': baseVolume,
'quoteVolume': quoteVolume,
'info': ticker,
};
}
async fetchTickers (symbols = undefined, params = {}) {
await this.loadMarkets ();
const response = await this.publicGetV1Pricefeed (params);
//
// [
// {
// "pair": "BATUSD",
// "price": "0.20687",
// "percentChange24h": "0.0146"
// },
// {
// "pair": "LINKETH",
// "price": "0.018",
// "percentChange24h": "0.0000"
// },
// ]
//
return this.parseTickers (response, symbols);
}
parseTrade (trade, market = undefined) {
//
// public fetchTrades
//
// {
// "timestamp":1601617445,
// "timestampms":1601617445144,
// "tid":14122489752,
// "price":"0.46476",
// "amount":"28.407209",
// "exchange":"gemini",
// "type":"buy"
// }
//
const timestamp = this.safeInteger (trade, 'timestampms');
const id = this.safeString (trade, 'tid');
const orderId = this.safeString (trade, 'order_id');
const feeCurrencyId = this.safeString (trade, 'fee_currency');
const feeCurrencyCode = this.safeCurrencyCode (feeCurrencyId);
const fee = {
'cost': this.safeNumber (trade, 'fee_amount'),
'currency': feeCurrencyCode,
};
const priceString = this.safeString (trade, 'price');
const amountString = this.safeString (trade, 'amount');
const price = this.parseNumber (priceString);
const amount = this.parseNumber (amountString);
const cost = this.parseNumber (Precise.stringMul (priceString, amountString));
const type = undefined;
const side = this.safeStringLower (trade, 'type');
const symbol = this.safeSymbol (undefined, market);
return {
'id': id,
'order': orderId,
'info': trade,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'symbol': symbol,
'type': type,
'side': side,
'takerOrMaker': undefined,
'price': price,
'cost': cost,
'amount': amount,
'fee': fee,
};
}
async fetchTrades (symbol, since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
const market = this.market (symbol);
const request = {
'symbol': market['id'],
};
const response = await this.publicGetV1TradesSymbol (this.extend (request, params));
//
// [
// {
// "timestamp":1601617445,
// "timestampms":1601617445144,
// "tid":14122489752,
// "price":"0.46476",
// "amount":"28.407209",
// "exchange":"gemini",
// "type":"buy"
// },
// ]
//
return this.parseTrades (response, market, since, limit);
}
async fetchBalance (params = {}) {
await this.loadMarkets ();
const response = await this.privatePostV1Balances (params);
const result = { 'info': response };
for (let i = 0; i < response.length; i++) {
const balance = response[i];
const currencyId = this.safeString (balance, 'currency');
const code = this.safeCurrencyCode (currencyId);
const account = this.account ();
account['free'] = this.safeString (balance, 'available');
account['total'] = this.safeString (balance, 'amount');
result[code] = account;
}
return this.parseBalance (result, false);
}
parseOrder (order, market = undefined) {
const timestamp = this.safeInteger (order, 'timestampms');
const amount = this.safeNumber (order, 'original_amount');
const remaining = this.safeNumber (order, 'remaining_amount');
const filled = this.safeNumber (order, 'executed_amount');
let status = 'closed';
if (order['is_live']) {
status = 'open';
}
if (order['is_cancelled']) {
status = 'canceled';
}
const price = this.safeNumber (order, 'price');
const average = this.safeNumber (order, 'avg_execution_price');
let type = this.safeString (order, 'type');
if (type === 'exchange limit') {
type = 'limit';
} else if (type === 'market buy' || type === 'market sell') {
type = 'market';
} else {
type = order['type'];
}
const fee = undefined;
const marketId = this.safeString (order, 'symbol');
const symbol = this.safeSymbol (marketId, market);
const id = this.safeString (order, 'order_id');
const side = this.safeStringLower (order, 'side');
const clientOrderId = this.safeString (order, 'client_order_id');
return this.safeOrder ({
'id': id,
'clientOrderId': clientOrderId,
'info': order,
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'lastTradeTimestamp': undefined,
'status': status,
'symbol': symbol,
'type': type,
'timeInForce': undefined,
'postOnly': undefined,
'side': side,
'price': price,
'stopPrice': undefined,
'average': average,
'cost': undefined,
'amount': amount,
'filled': filled,
'remaining': remaining,
'fee': fee,
'trades': undefined,
});
}
async fetchOrder (id, symbol = undefined, params = {}) {
await this.loadMarkets ();
const request = {
'order_id': id,
};
const response = await this.privatePostV1OrderStatus (this.extend (request, params));
return this.parseOrder (response);
}
async fetchOpenOrders (symbol = undefined, since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
const response = await this.privatePostV1Orders (params);
let market = undefined;
if (symbol !== undefined) {
market = this.market (symbol); // throws on non-existent symbol
}
return this.parseOrders (response, market, since, limit);
}
async createOrder (symbol, type, side, amount, price = undefined, params = {}) {
await this.loadMarkets ();
if (type === 'market') {
throw new ExchangeError (this.id + ' allows limit orders only');
}
const nonce = this.nonce ();
const request = {
'client_order_id': nonce.toString (),
'symbol': this.marketId (symbol),
'amount': amount.toString (),
'price': price.toString (),
'side': side,
'type': 'exchange limit', // gemini allows limit orders only
};
const response = await this.privatePostV1OrderNew (this.extend (request, params));
return {
'info': response,
'id': response['order_id'],
};
}
async cancelOrder (id, symbol = undefined, params = {}) {
await this.loadMarkets ();
const request = {
'order_id': id,
};
return await this.privatePostV1OrderCancel (this.extend (request, params));
}
async fetchMyTrades (symbol = undefined, since = undefined, limit = undefined, params = {}) {
if (symbol === undefined) {
throw new ArgumentsRequired (this.id + ' fetchMyTrades() requires a symbol argument');
}
await this.loadMarkets ();
const market = this.market (symbol);
const request = {
'symbol': market['id'],
};
if (limit !== undefined) {
request['limit_trades'] = limit;
}
if (since !== undefined) {
request['timestamp'] = parseInt (since / 1000);
}
const response = await this.privatePostV1Mytrades (this.extend (request, params));
return this.parseTrades (response, market, since, limit);
}
async withdraw (code, amount, address, tag = undefined, params = {}) {
this.checkAddress (address);
await this.loadMarkets ();
const currency = this.currency (code);
const request = {
'currency': currency['id'],
'amount': amount,
'address': address,
};
const response = await this.privatePostV1WithdrawCurrency (this.extend (request, params));
return {
'info': response,
'id': this.safeString (response, 'txHash'),
};
}
nonce () {
return this.milliseconds ();
}
async fetchTransactions (code = undefined, since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
const request = {};
if (limit !== undefined) {
request['limit_transfers'] = limit;
}
if (since !== undefined) {
request['timestamp'] = since;
}
const response = await this.privatePostV1Transfers (this.extend (request, params));
return this.parseTransactions (response);
}
parseTransaction (transaction, currency = undefined) {
const timestamp = this.safeInteger (transaction, 'timestampms');
const currencyId = this.safeString (transaction, 'currency');
const code = this.safeCurrencyCode (currencyId, currency);
const address = this.safeString (transaction, 'destination');
const type = this.safeStringLower (transaction, 'type');
let status = 'pending';
// When deposits show as Advanced or Complete they are available for trading.
if (transaction['status']) {
status = 'ok';
}
let fee = undefined;
const feeAmount = this.safeNumber (transaction, 'feeAmount');
if (feeAmount !== undefined) {
fee = {
'cost': feeAmount,
'currency': code,
};
}
return {
'info': transaction,
'id': this.safeString (transaction, 'eid'),
'txid': this.safeString (transaction, 'txHash'),
'timestamp': timestamp,
'datetime': this.iso8601 (timestamp),
'address': address,
'tag': undefined, // or is it defined?
'type': type, // direction of the transaction, ('deposit' | 'withdraw')
'amount': this.safeNumber (transaction, 'amount'),
'currency': code,
'status': status,
'updated': undefined,
'fee': fee,
};
}
sign (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
let url = '/' + this.implodeParams (path, params);
const query = this.omit (params, this.extractParams (path));
if (api === 'private') {
this.checkRequiredCredentials ();
const nonce = this.nonce ();
const request = this.extend ({
'request': url,
'nonce': nonce,
}, query);
let payload = this.json (request);
payload = this.stringToBase64 (payload);
const signature = this.hmac (payload, this.encode (this.secret), 'sha384');
headers = {
'Content-Type': 'text/plain',
'X-GEMINI-APIKEY': this.apiKey,
'X-GEMINI-PAYLOAD': this.decode (payload),
'X-GEMINI-SIGNATURE': signature,
};
} else {
if (Object.keys (query).length) {
url += '?' + this.urlencode (query);
}
}
url = this.urls['api'][api] + url;
return { 'url': url, 'method': method, 'body': body, 'headers': headers };
}
handleErrors (httpCode, reason, url, method, headers, body, response, requestHeaders, requestBody) {
if (response === undefined) {
if (typeof body === 'string') {
const feedback = this.id + ' ' + body;
this.throwBroadlyMatchedException (this.exceptions['broad'], body, feedback);
}
return; // fallback to default error handler
}
//
// {
// "result": "error",
// "reason": "BadNonce",
// "message": "Out-of-sequence nonce <1234> precedes previously used nonce <2345>"
// }
//
const result = this.safeString (response, 'result');
if (result === 'error') {
const reason = this.safeString (response, 'reason');
const message = this.safeString (response, 'message');
const feedback = this.id + ' ' + message;
this.throwExactlyMatchedException (this.exceptions['exact'], reason, feedback);
this.throwExactlyMatchedException (this.exceptions['exact'], message, feedback);
this.throwBroadlyMatchedException (this.exceptions['broad'], message, feedback);
throw new ExchangeError (feedback); // unknown message
}
}
async createDepositAddress (code, params = {}) {
await this.loadMarkets ();
const currency = this.currency (code);
const request = {
'currency': currency['id'],
};
const response = await this.privatePostV1DepositCurrencyNewAddress (this.extend (request, params));
const address = this.safeString (response, 'address');
this.checkAddress (address);
return {
'currency': code,
'address': address,
'tag': undefined,
'info': response,
};
}
async fetchOHLCV (symbol, timeframe = '5m', since = undefined, limit = undefined, params = {}) {
await this.loadMarkets ();
const market = this.market (symbol);
const request = {
'timeframe': this.timeframes[timeframe],
'symbol': market['id'],
};
const response = await this.publicGetV2CandlesSymbolTimeframe (this.extend (request, params));
//
// [
// [1591515000000,0.02509,0.02509,0.02509,0.02509,0],
// [1591514700000,0.02503,0.02509,0.02503,0.02509,44.6405],
// [1591514400000,0.02503,0.02503,0.02503,0.02503,0],
// ]
//
return this.parseOHLCVs (response, market, timeframe, since, limit);
}
};