lamassu-server/lib/tx.js

94 lines
3.1 KiB
JavaScript

const _ = require('lodash/fp')
const db = require('./db')
const BN = require('./bn')
const CashInTx = require('./cash-in/cash-in-tx')
const CashOutTx = require('./cash-out/cash-out-tx')
const T = require('./time')
// FP operations on Postgres result in very big errors.
// E.g.: 1853.013808 * 1000 = 1866149.494
const REDEEMABLE_AGE = T.day / 1000
function process (tx, pi) {
const mtx = massage(tx, pi)
if (mtx.direction === 'cashIn') return CashInTx.post(mtx, pi)
if (mtx.direction === 'cashOut') return CashOutTx.post(mtx, pi)
return Promise.reject(new Error('No such tx direction: ' + mtx.direction))
}
function post (tx, pi) {
return process(tx, pi)
.then(_.set('dirty', false))
}
function massage (tx, pi) {
const isDateField = r => r === 'created' || _.endsWith('_time', r)
const transformDate = (v, k) => isDateField(k) ? new Date(v) : v
const mapValuesWithKey = _.mapValues.convert({'cap': false})
const transformDates = r => mapValuesWithKey(transformDate, r)
const mapBN = r => {
const update = r.direction === 'cashIn'
? {
cryptoAtoms: new BN(r.cryptoAtoms),
fiat: new BN(r.fiat),
cashInFee: new BN(r.cashInFee),
cashInFeeCrypto: new BN(r.cashInFeeCrypto),
commissionPercentage: new BN(r.commissionPercentage),
rawTickerPrice: r.rawTickerPrice ? new BN(r.rawTickerPrice) : null,
minimumTx: new BN(r.minimumTx)
}
: {
cryptoAtoms: new BN(r.cryptoAtoms),
fiat: new BN(r.fiat),
rawTickerPrice: r.rawTickerPrice ? new BN(r.rawTickerPrice) : null,
commissionPercentage: new BN(r.commissionPercentage)
}
return _.assign(r, update)
}
const mapper = _.flow(
transformDates,
mapBN,
_.unset('dirty'))
return mapper(tx)
}
function cancel (txId) {
const promises = [
CashInTx.cancel(txId).then(() => true).catch(() => false),
CashOutTx.cancel(txId).then(() => true).catch(() => false)
]
return Promise.all(promises)
.then(r => {
if (_.some(r)) return
throw new Error('No such transaction')
})
}
function customerHistory (customerId, thresholdDays) {
const sql = `SELECT * FROM (
SELECT txIn.id, txIn.created, txIn.fiat, 'cashIn' AS direction,
((NOT txIn.send_confirmed) AND (txIn.created <= now() - interval $3)) AS expired
FROM cash_in_txs txIn
WHERE txIn.customer_id = $1
AND txIn.created > now() - interval $2
AND fiat > 0
UNION
SELECT txOut.id, txOut.created, txOut.fiat, 'cashOut' AS direction,
(NOT txOut.dispense AND extract(epoch FROM (now() - greatest(txOut.created, txOut.confirmed_at))) >= $4) AS expired
FROM cash_out_txs txOut
WHERE txOut.customer_id = $1
AND txOut.created > now() - interval $2
AND error_code NOT IN ('operatorCancel', 'scoreThresholdReached', 'ciphertraceError')
AND fiat > 0
) ch WHERE NOT ch.expired ORDER BY ch.created`
const days = _.isNil(thresholdDays) ? 0 : thresholdDays
return db.any(sql, [customerId, `${days} days`, '60 minutes', REDEEMABLE_AGE])
}
module.exports = { post, cancel, customerHistory }