chore: use monorepo organization

packages/server/lib/tx.js

@@ -0,0 +1,96 @@
+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),
+        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),
+        fixedFee: r.cashOutFee ? new BN(r.cashOutFee) : null,
+        rawTickerPrice: r.rawTickerPrice ? new BN(r.rawTickerPrice) : null,
+        commissionPercentage: new BN(r.commissionPercentage)
+      }
+
+    return _.assign(r, update)
+  }
+
+  const mapper = _.flow(
+    transformDates,
+    mapBN,
+    _.unset('dirty'),
+    _.unset('cashOutFee')
+  )
+
+  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 ch.id, ch.created, ch.fiat, ch.direction 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 $2
+      AND (error_code IS NULL OR error_code NOT IN ('operatorCancel', 'scoreThresholdReached', 'walletScoringError'))
+      AND fiat > 0
+  ) ch WHERE NOT ch.expired ORDER BY ch.created`
+
+  const days = _.isNil(thresholdDays) ? 0 : thresholdDays
+  return db.any(sql, [customerId, `${days} days`, '60 minutes', REDEEMABLE_AGE])
+}
+
+module.exports = { post, cancel, customerHistory }