lamassu-server/lib/cash-out/cash-out-helper.js
Sérgio Salgado b0fa62a9f3 feat: add discount source column to transaction tables
fix: move individual discounts to phone code response instead of poller
2021-09-07 17:26:36 +01:00

116 lines
2.9 KiB
JavaScript

const _ = require('lodash/fp')
const db = require('../db')
const T = require('../time')
const BN = require('../bn')
const REDEEMABLE_AGE = T.day
const CASH_OUT_TRANSACTION_STATES = `
case
when error is not null then 'Error'
when dispense then 'Success'
when (extract(epoch from (now() - greatest(created, confirmed_at))) * 1000) >= ${REDEEMABLE_AGE} then 'Expired'
else 'Pending'
end`
module.exports = { redeemableTxs, toObj, toDb, REDEEMABLE_AGE, CASH_OUT_TRANSACTION_STATES }
const mapValuesWithKey = _.mapValues.convert({cap: false})
function convertBigNumFields (obj) {
const convert = (value, key) => {
if (_.includes(key, [ 'cryptoAtoms', 'receivedCryptoAtoms', 'fiat' ])) {
return value.toString()
}
// Only test isNil for these fields since the others should not be empty.
if (_.includes(key, [ 'commissionPercentage', 'rawTickerPrice' ]) && !_.isNil(value)) {
return value.toString()
}
return value
}
const convertKey = key => _.includes(key, ['cryptoAtoms', 'fiat'])
? key + '#'
: key
return _.mapKeys(convertKey, mapValuesWithKey(convert, obj))
}
function convertField (key) {
return _.snakeCase(key)
}
function addDbBills (tx) {
const bills = tx.bills
if (_.isEmpty(bills)) return tx
return _.assign(tx, {
provisioned1: bills[0].provisioned,
provisioned2: bills[1].provisioned,
denomination1: bills[0].denomination,
denomination2: bills[1].denomination
})
}
function toDb (tx) {
const massager = _.flow(convertBigNumFields, addDbBills,
_.omit(['direction', 'bills', 'promoCodeApplied']), _.mapKeys(convertField))
return massager(tx)
}
function toObj (row) {
if (!row) return null
const keys = _.keys(row)
let newObj = {}
keys.forEach(key => {
const objKey = _.camelCase(key)
if (key === 'received_crypto_atoms' && row[key]) {
newObj[objKey] = new BN(row[key])
return
}
if (_.includes(key, ['crypto_atoms', 'fiat', 'commission_percentage', 'raw_ticker_price'])) {
newObj[objKey] = new BN(row[key])
return
}
newObj[objKey] = row[key]
})
newObj.direction = 'cashOut'
const billFields = ['denomination1', 'denomination2', 'provisioned1', 'provisioned2']
if (_.every(_.isNil, _.at(billFields, newObj))) return newObj
if (_.some(_.isNil, _.at(billFields, newObj))) throw new Error('Missing cassette values')
const bills = [
{
denomination: newObj.denomination1,
provisioned: newObj.provisioned1
},
{
denomination: newObj.denomination2,
provisioned: newObj.provisioned2
}
]
return _.set('bills', bills, _.omit(billFields, newObj))
}
function redeemableTxs (deviceId) {
const sql = `select * from cash_out_txs
where device_id=$1
and redeem=$2
and dispense=$3
and provisioned_1 is not null
and (extract(epoch from (now() - greatest(created, confirmed_at))) * 1000) < $4`
return db.any(sql, [deviceId, true, false, REDEEMABLE_AGE])
.then(_.map(toObj))
}