autobounty/bot/prices.js

74 lines
2.8 KiB
JavaScript

"use strict"
const https = require("https")
const config = require("../config")
const getGasPrice = function () {
const url = 'https://ethgasstation.info/json/ethgasAPI.json'
// return new pending promise
return new Promise((resolve, reject) => {
// select http or https module, depending on reqested url
const lib = url.startsWith('https') ? require('https') : require('http')
const request = lib.get(url, (response) => {
// handle http errors
if (response.statusCode < 200 || response.statusCode > 299) {
reject('Failed to load page, status code: ' + response.statusCode)
}
// temporary data holder
const body = []
// on every content chunk, push it to the data array
response.on('data', (chunk) => body.push(chunk))
// we are done, resolve promise with those joined chunks
response.on('end', () => {
// safeLowWait returns GWei (10^10 Wei).
let jsonBody = JSON.parse(body.join(''))
let gasPriceWei = parseInt(jsonBody['safeLowWait']) * Math.pow(10, 10)
resolve(gasPriceWei)
})
})
// handle connection errors of the request
request.on('error', (err) => reject(err))
})
}
const getTokenPriceMock = function () {
return new Promise((resolve, reject) => resolve(0.35))
}
const getTokenPrice = function (token) {
if (config.debug) {
return getTokenPriceMock()
}
const currency = 'USD'
const url = 'https://min-api.cryptocompare.com/data/price?fsym=' + token + '&tsyms=' + currency
// return new pending promise
return new Promise((resolve, reject) => {
// select http or https module, depending on reqested url
const lib = url.startsWith('https') ? require('https') : require('http')
const request = lib.get(url, (response) => {
// handle http errors
if (response.statusCode < 200 || response.statusCode > 299) {
reject('Failed to load page, status code: ' + response.statusCode)
}
// temporary data holder
const body = []
// on every content chunk, push it to the data array
response.on('data', (chunk) => body.push(chunk))
// we are done, resolve promise with those joined chunks
response.on('end', () => {
let jsonBody = JSON.parse(body.join(''))
let tokenPrice = parseFloat(jsonBody[currency])
resolve(tokenPrice)
})
})
// handle connection errors of the request
request.on('error', (err) => reject(err))
})
}
module.exports = {
getGasPrice: getGasPrice,
getTokenPrice: getTokenPrice
}