v12.0.0 - initial commit

packages/server/lib/new-admin/services/funding.js

@@ -0,0 +1,88 @@
+const _ = require('lodash/fp')
+const BN = require('../../bn')
+const settingsLoader = require('../../new-settings-loader')
+const configManager = require('../../new-config-manager')
+const wallet = require('../../wallet')
+const ticker = require('../../ticker')
+const txBatching = require('../../tx-batching')
+const { utils: coinUtils } = require('@lamassu/coins')
+
+function computeCrypto(cryptoCode, _balance) {
+  const cryptoRec = coinUtils.getCryptoCurrency(cryptoCode)
+  const unitScale = cryptoRec.unitScale
+
+  return new BN(_balance).shiftedBy(-unitScale).decimalPlaces(5)
+}
+
+function computeFiat(rate, cryptoCode, _balance) {
+  const cryptoRec = coinUtils.getCryptoCurrency(cryptoCode)
+  const unitScale = cryptoRec.unitScale
+
+  return new BN(_balance).shiftedBy(-unitScale).times(rate).decimalPlaces(5)
+}
+
+function getSingleCoinFunding(settings, fiatCode, cryptoCode) {
+  const promises = [
+    wallet.newFunding(settings, cryptoCode),
+    ticker.getRates(settings, fiatCode, cryptoCode),
+    txBatching.getOpenBatchCryptoValue(cryptoCode),
+  ]
+
+  return Promise.all(promises).then(([fundingRec, ratesRec, batchRec]) => {
+    const rates = ratesRec.rates
+    const rate = rates.ask.plus(rates.bid).div(2)
+    const fundingConfirmedBalance = fundingRec.fundingConfirmedBalance
+    const fiatConfirmedBalance = computeFiat(
+      rate,
+      cryptoCode,
+      fundingConfirmedBalance,
+    )
+    const pending = fundingRec.fundingPendingBalance.minus(batchRec)
+    const fiatPending = computeFiat(rate, cryptoCode, pending)
+    const fundingAddress = fundingRec.fundingAddress
+    const fundingAddressUrl = coinUtils.buildUrl(cryptoCode, fundingAddress)
+
+    return {
+      cryptoCode,
+      fundingAddress,
+      fundingAddressUrl,
+      confirmedBalance: computeCrypto(
+        cryptoCode,
+        fundingConfirmedBalance,
+      ).toFormat(5),
+      pending: computeCrypto(cryptoCode, pending).toFormat(5),
+      fiatConfirmedBalance: fiatConfirmedBalance,
+      fiatPending: fiatPending,
+      fiatCode,
+    }
+  })
+}
+
+// Promise.allSettled not running on current version of node
+const reflect = p =>
+  p.then(
+    value => ({ value, status: 'fulfilled' }),
+    error => ({ error: error.toString(), status: 'rejected' }),
+  )
+
+function getFunding() {
+  return settingsLoader.load().then(settings => {
+    const cryptoCodes = configManager.getAllCryptoCurrencies(settings.config)
+    const fiatCode = configManager.getGlobalLocale(settings.config).fiatCurrency
+    const pareCoins = c => _.includes(c.cryptoCode, cryptoCodes)
+    const cryptoCurrencies = coinUtils.cryptoCurrencies()
+    const cryptoDisplays = _.filter(pareCoins, cryptoCurrencies)
+
+    const promises = cryptoDisplays.map(it =>
+      getSingleCoinFunding(settings, fiatCode, it.cryptoCode),
+    )
+    return Promise.all(promises.map(reflect)).then(response => {
+      const mapped = response.map(it =>
+        _.merge({ errorMsg: it.error }, it.value),
+      )
+      return _.toArray(_.merge(mapped, cryptoDisplays))
+    })
+  })
+}
+
+module.exports = { getFunding }