Feat: implement per operator settings cache

Fix: fix linter-found issues

Chore: move findOperatorId to own middleware file

Chore: delete old routes.js file and rename new-routes.js to routes.js

Fix: PR fixes

lib/routes/verifyPromoCodeRoutes.js

@@ -0,0 +1,49 @@
+const express = require('express')
+const router = express.Router()
+const _ = require('lodash/fp')
+
+const BN = require('../bn')
+const commissionMath = require('../commission-math')
+const configManager = require('../new-config-manager')
+const notifier = require('../notifier')
+const promoCodes = require('../promo-codes')
+
+function respond (req, res, _body, _status) {
+  const status = _status || 200
+  const body = _body || {}
+  const customer = _.getOr({ sanctions: true }, ['customer'], body)
+  // sanctions can be null for new customers so we can't use falsy checks
+  if (customer.sanctions === false) {
+    notifier.notifyIfActive('compliance', 'sanctionsNotify', customer, req.body.phone)
+  }
+  return res.status(status).json(body)
+}
+
+function verifyPromoCode (req, res, next) {
+  promoCodes.getPromoCode(req.body.codeInput)
+    .then(promoCode => {
+      if (!promoCode) return next()
+
+      const transaction = req.body.tx
+      const commissions = configManager.getCommissions(transaction.cryptoCode, req.deviceId, req.settings.config)
+      const tickerRate = BN(transaction.rawTickerPrice)
+      const discount = commissionMath.getDiscountRate(promoCode.discount, commissions[transaction.direction])
+      const rates = {
+        [transaction.cryptoCode]: {
+          [transaction.direction]: (transaction.direction === 'cashIn')
+            ? tickerRate.mul(discount).round(5)
+            : tickerRate.div(discount).round(5)
+        }
+      }
+
+      respond(req, res, {
+        promoCode: promoCode,
+        newRates: rates
+      })
+    })
+    .catch(next)
+}
+
+router.post('/', verifyPromoCode)
+
+module.exports = router