lamassu-server/lib/exchange.js
2021-07-08 17:08:38 +01:00

52 lines
1.5 KiB
JavaScript

const configManager = require('./new-config-manager')
const ccxt = require('./plugins/exchange/ccxt')
const mockExchange = require('./plugins/exchange/mock-exchange')
function lookupExchange (settings, cryptoCode) {
const exchange = configManager.getWalletSettings(cryptoCode, settings.config).exchange
if (exchange === 'no-exchange') return null
return exchange
}
function fetchExchange (settings, cryptoCode) {
return Promise.resolve()
.then(() => {
const exchangeName = lookupExchange(settings, cryptoCode)
if (!exchangeName) throw new Error('No exchange set')
const account = settings.accounts[exchangeName]
return { exchangeName, account }
})
}
function buy (settings, tradeEntry) {
const { cryptoAtoms, fiatCode, cryptoCode } = tradeEntry
return fetchExchange(settings, cryptoCode)
.then(r => {
if (r.exchangeName === 'mock-exchange') {
return mockExchange.buy(cryptoAtoms, fiatCode, cryptoCode)
}
return ccxt.trade('buy', r.account, tradeEntry, r.exchangeName)
})
}
function sell (settings, tradeEntry) {
const { cryptoAtoms, fiatCode, cryptoCode } = tradeEntry
return fetchExchange(settings, cryptoCode)
.then(r => {
if (r.exchangeName === 'mock-exchange') {
return mockExchange.sell(cryptoAtoms, fiatCode, cryptoCode)
}
return ccxt.trade('sell', r.account, tradeEntry, r.exchangeName)
})
}
function active (settings, cryptoCode) {
return !!lookupExchange(settings, cryptoCode)
}
module.exports = {
buy,
sell,
active
}