37 lines
1,013 B
JavaScript
37 lines
1,013 B
JavaScript
const mem = require('mem')
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const configManager = require('./new-config-manager')
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const logger = require('./logger')
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const ccxt = require('./plugins/ticker/ccxt')
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const lastRate = {}
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const FETCH_INTERVAL = 60000
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function _getRates (settings, fiatCode, cryptoCode) {
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return Promise.resolve()
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.then(() => {
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const config = settings.config
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const exchangeName = configManager.getWalletSettings(cryptoCode, config).ticker
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const market = [cryptoCode, fiatCode].join('-')
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return ccxt.ticker(exchangeName, fiatCode, cryptoCode)
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.then(r => ({
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rates: r.rates,
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timestamp: Date.now()
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}))
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.then(r => {
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lastRate[market] = r
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return r
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})
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.catch(err => {
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logger.error(err)
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return lastRate[market]
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})
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})
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}
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const getRates = mem(_getRates, {
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maxAge: FETCH_INTERVAL,
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cacheKey: (settings, fiatCode, cryptoCode) => JSON.stringify([fiatCode, cryptoCode])
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})
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module.exports = { getRates }
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