feat: add loyalty panel screen and structure

feat: add coupons table

feat: add coupons to schema

fix: coupon schema

feat: coupon table

feat: add coupon top button

feat: add first coupon button

feat: delete coupon

feat: coupon modal

fix: clear discount on modal close

fix: modal input formatting

feat: add new coupons

fix: button positioning

fix: remove loyalty panel sidebar

fix: coupon screen matching specs

fix: coupon modal

feat: send coupon data to machine on poll

fix: available coupons bool

feat: coupon endpoint

feat: transaction discount migration

feat: post-discount rates

refactor: bills

feat: version string

fix: bill saving on db

feat: coupon soft-delete

fix: coupon soft delete

fix: bill receiving

feat: remove cryptoAtoms update during tx

fix: tx trading

fix: bills

feat: start trades rework

fix: remove code

fix: code review

lib/routes.js

@@ -25,6 +25,8 @@ const E = require('./error')
 const customers = require('./customers')
 const logs = require('./logs')
 const compliance = require('./compliance')
+const couponManager = require('./coupon-manager')
+const BN = require('./bn')
 
 const version = require('../package.json').version
 
@@ -213,6 +215,37 @@ function verifyTx (req, res, next) {
     .catch(next)
 }
 
+function verifyCoupon (req, res, next) {
+  couponManager.getCoupon(req.body.codeInput)
+    .then(coupon => {
+      if (!coupon) 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 = getDiscountRate(coupon.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, {
+        coupon: coupon,
+        newRates: rates
+      })
+    })
+    .catch(next)
+}
+
+function getDiscountRate (discount, commission) {
+  const percentageDiscount = BN(1).sub(BN(discount).div(100))
+  const percentageCommission = BN(commission).div(100)
+  return BN(1).add(percentageDiscount.mul(percentageCommission))
+}
+
 function addOrUpdateCustomer (req) {
   const customerData = req.body
   const machineVersion = req.query.version
@@ -450,7 +483,8 @@ const configRequiredRoutes = [
   '/event',
   '/phone_code',
   '/customer',
-  '/tx'
+  '/tx',
+  '/verify_coupon'
 ]
 
 const app = express()
@@ -477,6 +511,7 @@ app.post('/state', stateChange)
 
 app.post('/verify_user', verifyUser)
 app.post('/verify_transaction', verifyTx)
+app.post('/verify_coupon', verifyCoupon)
 
 app.post('/phone_code', getCustomerWithPhoneCode)
 app.patch('/customer/:id', updateCustomer)