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index.js
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index.js
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'use strict'; // jshint ignore:line
// jshint esversion: 6
/* globals require: true, __dirname: true, setInterval: true, console: true, module: true */
var request = require('request');
const debug = require('debug')('node-bitfinex-rest-api');
class BitFinexAPI {
constructor(options={}) {
this.API_URL = options.API_URL || 'https://api.bitfinex.com';
this.currency = options.currency || ''; // If not set, it will fetch all tradingPairs (ex: ETHUSD, ETHEUR, ETHBTC...)
this.events = options.events || false;
if (this.events) {
this.refresh = options.refresh*1000 || 60*1000;
this.events = [];
this._emitter();
setInterval(this._emitter.bind(this), this.refresh);
}
debug(options);
}
_getJSON(url, callback) {
request(this.API_URL+url, (error, response, body) => {
if (error) {
callback(false);
return this;
}
if (response && response.statusCode == 200) {
callback(JSON.parse(body));
} else {
callback(false);
return this;
}
});
}
_find(symbols, symbol) {
return symbols.find(o => o.symbol === symbol.toUpperCase()) ||
symbols.find(o => o.id === symbol.toLowerCase());
}
_emitter() {
var tradingPairs = [];
debug(this.events);
/*
* [ { symbol: 'BTC',
* price: 4000,
* callback: [Function],
* type: 'priceAbove' } ]
*/
this.events.forEach(_event => {
tradingPairs.push(_event.symbol);
});
debug('Event running...');
/* Working on Events: Still not working!!!
*/
this.getTickers(tradingPairs.join(','), tickersData => {
if (!tickersData) { return false; }
/* working: ok */
this.events.filter(e => e.type == 'update').forEach(event => {
var res = this._find(tickersData, event.symbol);
if (res) {
event.callback(res, event);
}
});
/* working: ok */
this.events.filter(e => e.type == 'priceAbove').forEach(event => {
var res = this._find(tickersData, event.symbol);
if (res) {
if (res.lastPrice >= event.price) {
event.callback(res, event);
}
}
});
/* working: ok */
this.events.filter(e => e.type == 'priceBelow').forEach(event => {
var res = this._find(tickersData, event.symbol);
if (res) {
if (res.lastPrice <= event.price) {
event.callback(res, event);
}
}
});
/* working: ok */
this.events.filter(e => e.type == 'volumeAbove').forEach(event => {
var res = this._find(tickersData, event.symbol);
if (res) {
if (res.volume >= event.volume) {
event.callback(res, event);
}
}
});
/* working: ok */
this.events.filter(e => e.type == 'volumeBelow').forEach(event => {
var res = this._find(tickersData, event.symbol);
if (res) {
if (res.volume <= event.volume) {
event.callback(res, event);
}
}
});
/*
this.events.filter(e => e.type == 'pricePercentChange1h').forEach(event => {
var res = this._find(tickersData, event.symbol);
if (res) {
if (event.percent < 0 && res.percent_change_1h <= event.percent ) {
event.callback(res, event);
} else if (event.percent > 0 && res.percent_change_1h >= event.percent) {
event.callback(res, event);
} else if (event.percent == 0 && res.percent_change_1h == 0) {
event.callback(res, event);
} else {
// store value to monitor
event.percentChange1h = (!event.percentChange1h) ? event.percent : event.percentChange1h;
}
}
});
*/
this.events.filter(e => e.type == 'priceChange24h').forEach(event => {
var res = this._find(tickersData, event.symbol);
if (res) {
if (event.percent < 0 && res.dailyChange <= event.percent ) {
event.callback(res, event);
} else if (event.percent > 0 && res.dailyChange >= event.percent) {
event.callback(res, event);
} else if (event.percent == 0 && res.dailyChange == 0) {
event.callback(res, event);
}
}
});
this.events.filter(e => e.type == 'pricePercentChange24h').forEach(event => {
var res = this._find(tickersData, event.symbol);
if (res) {
if (event.percent < 0 && res.dailyChangePerc <= event.percent ) {
event.callback(res, event);
} else if (event.percent > 0 && res.dailyChangePerc >= event.percent) {
event.callback(res, event);
} else if (event.percent == 0 && res.dailyChangePerc == 0) {
event.callback(res, event);
}
}
});
/*
this.events.filter(e => e.type == 'pricePercentChange7d').forEach(event => {
var res = this._find(tickersData, event.symbol);
if (res) {
if (event.percent < 0 && res.percent_change_7d <= event.percent ) {
event.callback(res, event);
} else if (event.percent > 0 && res.percent_change_7d >= event.percent) {
event.callback(res, event);
} else if (event.percent == 0 && res.percent_change_7d == 0) {
event.callback(res, event);
}
}
});
*/
});
}
/*
* Function: _currencyObjectToArray()
*
* Description: Accepts a object and returns a array
*
* params: {
* symbol: 'ELF',
* bid: 0.0015233,
* bidSize: 115210.00662534,
* ask: 0.0015405,
* askSize: 14571.10127627,
* dailyChange: 0.0000491,
* dailyChangePerc: 0.0332,
* lastPrice: 0.0015269,
* volume: 44796.30665487,
* high: 0.0015855,
* low: 0.001458
* }
*
* returns: array = [
* 'ELF',
* 10067,
* 59.44536362,
* 10069,
* 29.15006837,
* -333.08973822,
* -0.032,
* 10071,
* 65248.68663377,
* 10544,
* 9760 ]
*
*/
_currencyObjectToArray(data = []) {
if (data.length === -1) return data;
let {
symbol,
bid,
bidSize,
ask,
askSize,
dailyChange,
dailyChangePerc,
lastPrice,
volume,
high,
low,
} = data;
return [
symbol,
bid,
bidSize,
ask,
askSize,
dailyChange,
dailyChangePerc,
lastPrice,
volume,
high,
low
];
}
/*
* Function: _currencyArrayToObject()
*
* Description: Accepts an Array and output a object
*
* params: array = [
* 10067,
* 59.44536362,
* 10069,
* 29.15006837,
* -333.08973822,
* -0.032,
* 10071,
* 65248.68663377,
* 10544,
* 9760 ]
*
* returns: {
* symbol: 'tELFETH',
* bid: 0.0015233,
* bidSize: 115210.00662534,
* ask: 0.0015405,
* askSize: 14571.10127627,
* dailyChange: 0.0000491,
* dailyChangePerc: 0.0332,
* lastPrice: 0.0015269,
* volume: 44796.30665487,
* high: 0.0015855,
* low: 0.001458
* }
*
*/
_currencyArrayToObject(data = []) {
if (data.length === -1) return data;
return {
'symbol' : data[0],
'bid' : data[1],
'bidSize' : data[2],
'ask' : data[3],
'askSize' : data[4],
'dailyChange' : data[5],
'dailyChangePerc' : data[6],
'lastPrice' : data[7],
'volume' : data[8],
'high' : data[9],
'low' : data[10],
};
}
tradingPairExists(symbolPair, callback) {
if (callback) {
this.getTradingPairs(data => {
data.forEach( tradingPair => {
if ( symbolPair.toUpperCase() == tradingPair.toUpperCase() )
return callback(true);
});
});
return this; // (error, response, body)
} else {
return false;
}
}
symbolExists(symbol, callback) {
if (callback) {
this.getSymbols(symbolPairs => {
symbolPairs.forEach( _symbol => {
if ( symbol.toUpperCase() == _symbol )
return callback(true);
});
});
return this; // (error, response, body)
} else {
return false;
}
}
/*
* Function: getPlatformStatus(callback)
*
* Description: Get the current status of the platform (1=operative, 0=maintenance).
*
* When the platform is marked in MAINTENANCE MODE bots should stop trading activity.
* Cancelling orders will be still possible.
*
*
* params: callback
*
* GET: https://api.bitfinex.com/v2/platform/status
*
* Response: 200 OK
* [1]
*
* Response: 400 Bad Request
* {
* "message": "Unknown symbol"
* }
*
* returns:
* { status: 'operative' }
* - or -
* { status: 'maintenance' }
*
*
*/
getPlatformStatus(callback) {
if (callback) {
this._getJSON('/v2/platform/status', res => {
var platformStatus = (res[0] == 1) ? { 'status' : 'operative' } : { 'status' : 'maintenance' };
return callback(platformStatus);
});
return this; // (error, response, body)
} else {
return false;
}
}
/*
* Function: getTradingPairs(callback)
*
* Description: Gets a list of symbol pairs. Attention: ignores specified base currency (options.currency).
*
* params: callback
*
* GET: https://api.bitfinex.com/v1/symbols
*
* Response: 200 OK
* [
* "btcusd",
* "ethusd",
* "ethbtc",
* "ltcusd",
* "ltcbtc",
* ...
* ]
*
* Response: 400 Bad Request
* {
* "message": "Unknown symbol"
* }
*
*
* Returns:
*
* [
* "BTCUSD",
* "ETHUSD",
* "ETHBTC",
* "LTCUSD",
* "LTCBTC",
* ...
* ]
*
*/
getTradingPairs(callback) {
if (callback) {
this._getJSON('/v1/symbols', (symbolPairs) => {
if (symbolPairs) {
symbolPairs.sort();
var res = symbolPairs.map(function(pair) { return pair.toUpperCase(); });
if (res.length > 0) { callback(res); }
}
});
return this;
} else {
return false;
}
}
/*
* Function: getSymbols(callback)
*
* Description: Gets a sorted list of all available symbols.
*
* params: callback
*
* GET: https://api.bitfinex.com/v1/symbols
*
* Response: 200 OK
* [
* "btc",
* "eth",
* "ltc",
* ...
* ]
*
* Response: 400 Bad Request
* {
* "message": "Unknown symbol"
* }
*
*
* Returns:
*
* [
* "BTC",
* "ETH",
* "LTC",
* ...
* ]
*
* or, if this.currency is not set:
*
* [
* "BTCUSD",
* "ETHUSD",
* "LTCUSD"
* ...
* ]
*/
getSymbols(callback) {
if (callback) {
var currency = this.currency.toLowerCase();
this._getJSON('/v1/symbols', (symbols) => {
if (symbols) {
var res = [];
var symbolPairs = [];
symbols.forEach(function(pair) {
// Returns symbol only, removing 'options.currency' currency symbol if set.
if (currency != '') {
if ( pair.endsWith(currency) )
symbolPairs.push(pair.slice(0, pair.indexOf(currency)));
} else {
symbolPairs.push(pair);
}
});
symbolPairs.sort();
res = symbolPairs.map(function(pair) { return pair.toUpperCase(); });
if (res.length > 0) { callback(res); }
}
});
return this;
} else {
return false;
}
}
/*
* Function: getTopSymbols(limit, callback)
*
* Description: Gets a UNSORTED list of top <n> available symbols.
*
* params: limit = number
* callback
*
* GET: https://api.bitfinex.com/v1/symbols
*
* Response: 200 OK
* [
* "btcusd",
* "ethusd",
* "ltcusd",
* ...
* ]
*
* Response: 400 Bad Request
* {
* "message": "Unknown symbol"
* }
*
* Returns:
* [
* "BTC",
* "ETH",
* "LTC"
* ...
* ]
*
* or, if this.currency is not set:
*
* [
* "BTCUSD",
* "ETHUSD",
* "LTCUSD"
* ...
* ]
*
*/
getTopSymbols(limit, callback) {
if (limit && callback) {
var currency = this.currency.toLowerCase();
this._getJSON('/v1/symbols', (symbols) => {
var res = [];
var symbolPairs = [];
symbols.forEach(function(pair) {
// Returns symbol only, removing 'options.currency' currency symbol if set.
if (currency != '')
if ( pair.endsWith(currency) )
symbolPairs.push(pair.slice(0, pair.indexOf(currency)));
});
res = symbolPairs.map(function(pair) { return pair.toUpperCase(); });
if (res.length > 0) {callback(res.slice(0, limit));}
});
return this;
} else {
return false;
}
}
/*
* Function: getTicker(symbol, callback)
*
* Description: The ticker is a high level overview of the state of the market.
* It shows you the current best bid and ask, as well as the last trade price.
* It also includes information such as daily volume and how much the price
* has moved over the last day.
*
* Attention: It will use the current set currency in variable 'this.currency'.
*
* params: symbol = 'BTC'
* callback
*
* GET: https://api.bitfinex.com/v2/ticker/tBTCUSD
*
* Response: 200 OK
* [ 10067,
* 59.44536362,
* 10069,
* 29.15006837,
* -333.08973822,
* -0.032,
* 10071,
* 65248.68663377,
* 10544,
* 9760 ]
*
*
* Response: 400 Bad Request
* {
* "message": "Unknown symbol"
* }
*
* Returns:
* {
* symbol: 'ELFETH',
* bid: 0.0015233,
* bidSize: 115210.00662534,
* ask: 0.0015405,
* askSize: 14571.10127627,
* dailyChange: 0.0000491,
* dailyChangePerc: 0.0332,
* lastPrice: 0.0015269,
* volume: 44796.30665487,
* high: 0.0015855,
* low: 0.001458
* }
*
* or, if this.currency is not set:
*
* {
* symbol: 'ELFETH',
* bid: 0.0015233,
* bidSize: 115210.00662534,
* ...
* }
*
*/
getTicker(symbol, callback) {
if (symbol && callback) {
var symbolPair = (this.currency != '') ? symbol + this.currency : symbol;
console.log(symbolPair.toUpperCase());
this._getJSON('/v2/ticker/t'+symbolPair.toUpperCase(), (res) => {
if (res) {
if (this.currency != '')
res.splice(0, 0, symbol.toUpperCase()); // insert symbol at array index [0]
else
res.splice(0, 0, symbolPair.toUpperCase()); // insert symbolPair at array index [0]
callback(this._currencyArrayToObject(res));
}
});
return this;
} else {
return false;
}
}
/*
* Function: getTickers(symbols, callback)
*
* Description: Get ticker for specified symbols.
* The ticker is a high level overview of the state of the market.
* It shows you the current best bid and ask, as well as the last trade price.
* It also includes information such as daily volume and how much the price
* has moved over the last day.
*
* Attention: It will use the current set currency in variable 'this.currency'.
*
* params: symbols = 'BTC, ETH, ...'
* callback
*
* GET: https://api.bitfinex.com/v2/tickers?symbols=tBTCUSD,tETHUSD,...
*
* Response: 200 OK
* // as trading pairs (ex. tBTCUSD)
* [ [
* SYMBOL,
* BID,
* BID_SIZE,
* ASK,
* ASK_SIZE,
* DAILY_CHANGE,
* DAILY_CHANGE_PERC,
* LAST_PRICE,
* VOLUME,
* HIGH,
* LOW
* ],[
* ...
* ] ]
*
* Response: 400 Bad Request
* {
* "message": "Unknown symbol"
* }
*
* Returns:
* [ {
* symbol: 'ELF',
* bid: 0.0015233,
* bidSize: 115210.00662534,
* ask: 0.0015405,
* askSize: 14571.10127627,
* dailyChange: 0.0000491,
* dailyChangePerc: 0.0332,
* lastPrice: 0.0015269,
* volume: 44796.30665487,
* high: 0.0015855,
* low: 0.001458
* },{
* symbol: 'ELF',
* bid: 0.0015233,
* ...
* },{
* ...
*
* or, if this.currency is not set:
*
* {
* symbol: 'ELFETH',
* ...
* }
*/
getTickers(symbols, callback) {
if (symbols && callback) {
var allSymbolPairs = [];
symbols.split(',').forEach(symbol => {
var symbolPair = (this.currency != '') ? symbol + this.currency : symbol;
allSymbolPairs.push('t'+symbolPair.toUpperCase());
});
this._getJSON('/v2/tickers?symbols='+allSymbolPairs.join(','), (res) => {
var tickers = [];
res.forEach( tickerData => {
if (this.currency != '')
tickerData[0] = tickerData[0].replace(/^t/ig, '').substring(0, tickerData[0].length - 4).toUpperCase(); // in: 'tBTCUSD' => out: 'BTC'
else
tickerData[0] = tickerData[0].replace(/^t/ig, '').toUpperCase(); // in: 'tBTCUSD => out: 'BTCUSD'
tickers.push(this._currencyArrayToObject(tickerData));
});
if (res) { callback(tickers); }
});
return this;
} else {
return false;
}
}
/*
* Function: getAllTickers(callback)
*
* Description: Get ticker for all available symbols.
* The ticker is a high level overview of the state of the market.
* It shows you the current best bid and ask, as well as the last trade price.
* It also includes information such as daily volume and how much the price
*
* Attention: It will use the current set currency in variable 'this.currency'.
* has moved over the last day.
*
* params: callback
*
* Response: 200 OK
* // as trading pairs (ex. tBTCUSD)
* [ [
* SYMBOL,
* BID,
* BID_SIZE,
* ASK,
* ASK_SIZE,
* DAILY_CHANGE,
* DAILY_CHANGE_PERC,
* LAST_PRICE,
* VOLUME,
* HIGH,
* LOW
* ],[
* ...
* ] ]
*
* Response: 400 Bad Request
* {
* "message": "Unknown symbol"
* }
*
* Returns:
* [ {
* symbol: 'ELF',
* bid: 0.0015233,
* bidSize: 115210.00662534,
* ask: 0.0015405,
* askSize: 14571.10127627,
* dailyChange: 0.0000491,
* dailyChangePerc: 0.0332,
* lastPrice: 0.0015269,
* volume: 44796.30665487,
* high: 0.0015855,
* low: 0.001458
* },{
* symbol: 'ELF',
* bid: 0.0015233,
* ...
* },{
* ...
* } ]
*
* or, if this.currency is not set:
*
* {
* symbol: 'ELFETH',
* ...
* }
*/
getAllTickers(callback) {
if (callback) {
this.getSymbols(symbols => {
if (symbols && callback) {
var allSymbolPairs = [];
symbols.forEach(symbol => {
var symbolPair = (this.currency != '') ? symbol + this.currency : symbol;
allSymbolPairs.push('t'+symbolPair.toUpperCase());
});
this._getJSON('/v2/tickers?symbols='+allSymbolPairs.join(','), (res) => {
var tickers = [];
res.forEach( tickerData => {
if (this.currency != '')
tickerData[0] = tickerData[0].replace(/^t/ig, '').substring(0, tickerData[0].length - 4).toUpperCase(); // in: 'tBTCUSD' => out: 'BTC'
else
tickerData[0] = tickerData[0].replace(/^t/ig, '').toUpperCase(); // in: 'tBTCUSD' => out: 'BTC'
tickers.push(this._currencyArrayToObject(tickerData));
});
if (res) { callback(tickers); }
});
return this;
} else {
return false;
}
});
return this;
} else {
return false;
}
}
/*
* Function: getSymbolRecentTrades(symbol, callback)
*
* Description: Get a list of the most recent trades for the given symbol.
*
* params: symbol = 'btc'
* callback
*
* GET: https://api.bitfinex.com/v1/trades/<symbol>
*
* Response: 200 OK
* [ { period: 1, volume: '54275.55265163' },
* { period: 7, volume: '444550.89986689' },
* { period: 30, volume: '2016074.12541456' } ]
*
* Response: 400 Bad Request
* {
* "message": "Unknown symbol"
* }
*
*/
getSymbolRecentTrades(symbol, callback) {
if (symbol && callback) {
var symbolPair = (this.currency != '') ? symbol + this.currency : symbol;
this._getJSON(`/v1/trades/${symbolPair.toLowerCase()}`, (res) => {
if (res) { callback(res); }
});
return this;
} else {
return false;
}
}
/*
* Function: getSymbolStats(symbol, callback)
*
* Description: Various statistics about the requested pair.
*
* params: symbol = 'btc'
* callback
*
* GET: https://api.bitfinex.com/v1/stats/<symbol>
*
* Response: 200 OK
* [ { timestamp: 1519493551,
* tid: 202303833,
* price: '9664.3',
* amount: '1.5',
* exchange: 'bitfinex',
* type: 'buy' },
* { timestamp: 1519493551,
* tid: 202303832,
* price: '9664.0',
* amount: '0.02',
* exchange: 'bitfinex',
* type: 'buy' } ]
*
* Response: 400 Bad Request
* {
* "message": "Unknown symbol"
* }
*
*/
getSymbolStats(symbol, callback) {
if (symbol && callback) {
var symbolPair = (this.currency != '') ? symbol + this.currency : symbol;
this._getJSON(`/v1/stats/${symbolPair.toLowerCase()}`, (res) => {
if (res) { callback(res); }
});
return this;
} else {
return false;
}
}
/*
* Function: getSymbolOrderBook(symbol, callback)
*
* Description: Get the full order book for the specified symbol piar
*
* params: symbol = btcusd
* callback
*
* GET: https://api.bitfinex.com/v1/book/<symbol>
*
* Response: 200 OK
* { bids:
* [ { price: '10067', amount: '0.1', timestamp: '1517419047.0' },
* { price: '10064', amount: '0.2', timestamp: '1517419047.0' },
* ...
* { price: '10032', amount: '0.5726', timestamp: '1517419047.0' } ],
* asks:
* [ { price: '10069', amount: '0.9622', timestamp: '1517419047.0' },
* { price: '10070',
* amount: '4.63761686',
* timestamp: '1517419047.0' },
* ...
* { price: '10103', amount: '3.4', timestamp: '1517419047.0' } ] }
*
* Response: 400 Bad Request
* {
* "message": "Unknown symbol"
* }
*
*/
getSymbolOrderBook(symbol, callback) {
if (symbol && callback) {
var symbolPair = (this.currency != '') ? symbol + this.currency : symbol;
this._getJSON(`/v1/book/${symbolPair.toLowerCase()}`, (res) => {
if (res) { callback(res); }
});
return this;
} else {
return false;
}
}
/**********/
/* Events */
/**********/
onTickerUpdate(symbol, callback) {
if (this.events) {
this.events.push({symbol, callback, type: 'update'});
} else {
return false;
}
}
onPriceAbove(symbol, price, callback) {
if (this.events) {
this.events.push({symbol, price, callback, type: 'priceAbove'});
} else {
return false;
}
}
onPriceBelow(symbol, price, callback) {
if (this.events) {
this.events.push({symbol, price, callback, type: 'priceBelow'});
} else {
return false;
}
}
onVolumeAbove(symbol, volume, callback) {
if (this.events) {
this.events.push({symbol, volume, callback, type: 'volumeAbove'});
} else {
return false;
}
}
onVolumeBelow(symbol, volume, callback) {
if (this.events) {
this.events.push({symbol, volume, callback, type: 'volumeBelow'});
} else {
return false;
}
}
/*
onPricePercentChange(symbol, percent, callback) {
if (this.events) {
this.events.push({symbol, percent, callback, type: 'pricePercent'});
} else {
return false;
}
}
onPricePercentChange1h(symbol, percent, callback) {
if (this.events) {
this.events.push({symbol, percent, callback, type: 'pricePercentChange1h'});
} else {
return false;