NovaExchange API：将Python代码转换为NodeJS

Question

我正在为NODEJS编写API，但novaexchange站点上提供的示例是用Python编写的，因此我很难在NodeJS中编写等效的函数。非常感谢帮助。用Python编写的代码 https://www.novaexchange.com/remote/faq/

#!/usr/bin/python

import time
import hmac
import hashlib
import base64
import requests

# https://novaexchange.com/remote/faq/

API_KEY = "YOUR_API_KEY"
API_SECRET = "YOUR_API_SECRET"

public_set = set([ "markets", "market/info", "market/orderhistory", "market/openorders" ]) # optional
private_set = set([ "getbalances", "getbalance", "getdeposits", "getwithdrawals", "getnewdepositaddress", "getdepositaddress", "myopenorders", "myopenorders_market", "cancelorder", "withdraw", "trade", "tradehistory", "getdeposithistory", "getwithdrawalhistory", "walletstatus" ])

url = "https://novaexchange.com/remote/v2/"

def api_query( method, req = None ):
        url = "https://novaexchange.com/remote/v2/"
        if not req:
                req = {}
        if method.split('/')[0][0:6] == 'market':
                r = requests.get( url + method + '/', timeout = 60 )
        elif method.split('/')[0] in private_set:
                url += 'private/' + method + '/' + '?nonce=' + str( int( time.time() ) )
                req["apikey"] = API_KEY
                req["signature"] = base64.b64encode( hmac.new( API_SECRET, msg = url, digestmod = hashlib.sha512 ).digest() )
                headers = {'content-type': 'application/x-www-form-urlencoded'}
                r = requests.post( url, data = req, headers = headers, timeout = 60 )
        return r.text

# Eample usage:

# Public:
# print api_query( "markets" )
print api_query( "market/orderhistory/" + "LTC_DOGE" )
# etc...

# Private:
print api_query("getbalances")
# print api_query( "trade/" + "LTC_DOGE", { 'tradebase': 0, 'tradetype': "BUY", 'tradeprice': 0.000001, 'tradeamount': 1000 } )
# print api_query( 'cancelorder/' + str( 1426936 ) )
# print api_query( 'tradehistory' )
# etc...