refactor: backport new batching function

lib/cashbox-batches.js

@@ -1,3 +1,4 @@
+const constants = require('./constants')
 const db = require('./db')
 const _ = require('lodash/fp')
 const uuid = require('uuid')
@@ -18,6 +19,32 @@ function createCashboxBatch (deviceId, cashboxCount) {
   })
 }
 
+function updateMachineWithBatch (machineContext, oldCashboxCount) {
+  if (!_.has(['deviceId', 'cashbox', 'cassettes'], machineContext) && !_.inRange(constants.CASH_OUT_MINIMUM_AMOUNT_OF_CASSETTES, constants.CASH_OUT_MAXIMUM_AMOUNT_OF_CASSETTES + 1, _.size(machineContext.cassettes)))
+    throw new Error('Insufficient info to create a new cashbox batch')
+  if (_.isEqual(0, oldCashboxCount)) throw new Error('Cashbox is empty. Cashbox batch could not be created.')
+
+  return db.tx(t => {
+    const deviceId = machineContext.deviceId
+    const batchId = uuid.v4()
+    const q1 = t.none(`INSERT INTO cashbox_batches (id, device_id, created, operation_type) VALUES ($1, $2, now(), 'cash-in-empty')`, [batchId, deviceId])
+    const q2 = t.none(`UPDATE bills SET cashbox_batch_id=$1 FROM cash_in_txs
+      WHERE bills.cash_in_txs_id = cash_in_txs.id AND
+      cash_in_txs.device_id = $2 AND 
+      bills.cashbox_batch_id IS NULL`, [batchId, deviceId])
+    const q3 = t.none(`UPDATE devices SET cashbox=$1, cassette1=$2, cassette2=$3, cassette3=$4, cassette4=$5 WHERE device_id=$6`, [
+      machineContext.cashbox,
+      machineContext.cassettes[0],
+      machineContext.cassettes[1],
+      machineContext.cassettes[2],
+      machineContext.cassettes[3],
+      machineContext.deviceId
+    ])
+
+    return t.batch([q1, q2, q3])
+  })
+}
+
 function getBatches () {
    const sql = `
     SELECT cb.id, cb.device_id, cb.created, cb.operation_type, cb.bill_count_override, cb.performed_by, json_agg(b.*) AS bills
@@ -39,4 +66,4 @@ function getBillsByBatchId (id) {
   return db.any(sql, [id])
 }
 
-module.exports = { createCashboxBatch, getBatches, getBillsByBatchId, editBatchById }
+module.exports = { createCashboxBatch, updateMachineWithBatch, getBatches, getBillsByBatchId, editBatchById }

lib/constants.js

@@ -1,6 +1,13 @@
+const CASH_OUT_MINIMUM_AMOUNT_OF_CASSETTES = 2
+const CASH_OUT_MAXIMUM_AMOUNT_OF_CASSETTES = 4
+
 const anonymousCustomer = {
   uuid: '47ac1184-8102-11e7-9079-8f13a7117867',
   name: 'anonymous'
 }
 
-module.exports = {anonymousCustomer}
+module.exports = {
+  CASH_OUT_MINIMUM_AMOUNT_OF_CASSETTES,
+  CASH_OUT_MAXIMUM_AMOUNT_OF_CASSETTES,
+  anonymousCustomer
+}

lib/machine-loader.js

@@ -3,6 +3,7 @@ const pgp = require('pg-promise')()
 const axios = require('axios')
 const uuid = require('uuid')
 
+const batching = require('./cashbox-batches')
 const db = require('./db')
 const pairing = require('./pairing')
 const { checkPings, checkStuckScreen } = require('./notifier')
@@ -139,10 +140,17 @@ function emptyCashInBills (rec) {
 }
 
 function setCassetteBills (rec) {
-  const sql = 'update devices set cashbox=$1, cassette1=$2, cassette2=$3, cassette3=$4, cassette4=$5 where device_id=$6'
+  return db.oneOrNone(`SELECT cashbox FROM devices WHERE device_id=$1 LIMIT 1`, [rec.deviceId])
+    .then(oldCashboxValue => {
+      if (_.isNil(oldCashboxValue) || rec.cashbox === oldCashboxValue) {
+        const sql = 'UPDATE devices SET cashbox=$1, cassette1=$2, cassette2=$3, cassette3=$4, cassette4=$5 WHERE device_id=$6'
         return db.none(sql, [rec.cashbox, rec.cassettes[0], rec.cassettes[1], rec.cassettes[2], rec.cassettes[3], rec.deviceId])
       }
 
+      return batching.updateMachineWithBatch({ ...rec, oldCashboxValue })
+    })
+}
+
 function unpair (rec) {
   return pairing.unpair(rec.deviceId)
 }

lib/new-admin/graphql/schema.js

@@ -439,7 +439,8 @@ const resolvers = {
     bills: () => bills.getBills()
   },
   Mutation: {
-    machineAction: (...[, { deviceId, action, cashbox, cassette1, cassette2, cassette3, cassette4, newName }]) => machineAction({ deviceId, action, cashbox, cassette1, cassette2, cassette3, cassette4, newName }),
+    machineAction: (...[, { deviceId, action, cashbox, cassette1, cassette2, cassette3, cassette4, newName }]) =>
+      machineAction({ deviceId, action, cashbox, cassette1, cassette2, cassette3, cassette4, newName }),
     createPairingTotem: (...[, { name }]) => pairing.totem(name),
     saveAccounts: (...[, { accounts }]) => settingsLoader.saveAccounts(accounts),
     // resetAccounts: (...[, { schemaVersion }]) => settingsLoader.resetAccounts(schemaVersion),

new-lamassu-admin/src/pages/Maintenance/CashCassettes.js

@@ -112,14 +112,6 @@ const SET_CASSETTE_BILLS = gql`
   }
 `
 
-const CREATE_BATCH = gql`
-  mutation createBatch($deviceId: ID, $cashboxCount: Int) {
-    createBatch(deviceId: $deviceId, cashboxCount: $cashboxCount) {
-      id
-    }
-  }
-`
-
 const CashCassettes = () => {
   const classes = useStyles()
   const [showHistory, setShowHistory] = useState(false)
@@ -133,7 +125,6 @@ const CashCassettes = () => {
   const [setCassetteBills, { error }] = useMutation(SET_CASSETTE_BILLS, {
     refetchQueries: () => ['getData']
   })
-  const [createBatch] = useMutation(CREATE_BATCH)
   const bills = R.groupBy(bill => bill.deviceId)(R.path(['bills'])(data) ?? [])
   const deviceIds = R.uniq(
     R.map(R.prop('deviceId'))(R.path(['bills'])(data) ?? [])
@@ -145,26 +136,11 @@ const CashCassettes = () => {
     ...R.map(it => it.numberOfCassettes, machines),
     0
   )
-  const cashboxCounts = R.reduce(
-    (ret, m) => R.assoc(m.id, m.cashbox, ret),
-    {},
-    machines
-  )
 
   const getCashoutSettings = id => fromNamespace(id)(cashout)
   const isCashOutDisabled = ({ id }) => !getCashoutSettings(id).active
 
   const onSave = (id, cashbox, cassettes) => {
-    const oldCashboxCount = cashboxCounts[id]
-    if (cashbox < oldCashboxCount) {
-      createBatch({
-        variables: {
-          deviceId: id,
-          cashboxCount: oldCashboxCount
-        }
-      })
-    }
-
     return setCassetteBills({
       variables: {
         action: 'setCassetteBills',