Add transaction versioning, tx cancellation (#79)

lib/admin/transactions.js

@@ -2,6 +2,8 @@ const _ = require('lodash/fp')
 
 const db = require('../db')
 const machineLoader = require('../machine-loader')
+const tx = require('../tx')
+const cashInTx = require('../cash-in-tx')
 
 const NUM_RESULTS = 20
 
@@ -18,21 +20,49 @@ function addNames (txs) {
   })
 }
 
+const camelize = _.mapKeys(_.camelCase)
+
 function batch () {
-  const camelize = _.mapKeys(_.camelCase)
   const packager = _.flow(_.flatten, _.orderBy(_.property('created'), ['desc']),
     _.take(NUM_RESULTS), _.map(camelize), addNames)
 
-  const cashInSql = `select 'cashIn' as tx_class, cash_in_txs.*
+  const cashInSql = `select 'cashIn' as tx_class, cash_in_txs.*,
+  ((not send_confirmed) and (created <= now() - interval $1)) as expired
   from cash_in_txs
-  order by created desc limit $1`
+  order by created desc limit $2`
 
   const cashOutSql = `select 'cashOut' as tx_class, cash_out_txs.*
   from cash_out_txs
   order by created desc limit $1`
 
-  return Promise.all([db.any(cashInSql, [NUM_RESULTS]), db.any(cashOutSql, [NUM_RESULTS])])
+  return Promise.all([db.any(cashInSql, [cashInTx.PENDING_INTERVAL, NUM_RESULTS]), db.any(cashOutSql, [NUM_RESULTS])])
   .then(packager)
 }
 
-module.exports = {batch}
+function single (txId) {
+  const packager = _.flow(_.compact, _.map(camelize), addNames)
+
+  const cashInSql = `select 'cashIn' as tx_class,
+  ((not send_confirmed) and (created <= now() - interval $1)) as expired,
+  cash_in_txs.*
+  from cash_in_txs
+  where id=$2`
+
+  const cashOutSql = `select 'cashOut' as tx_class, cash_out_txs.*
+  from cash_out_txs
+  where id=$1`
+
+  return Promise.all([
+    db.oneOrNone(cashInSql, [cashInTx.PENDING_INTERVAL, txId]),
+    db.oneOrNone(cashOutSql, [txId])
+  ])
+  .then(packager)
+  .then(_.head)
+}
+
+function cancel (txId) {
+  return tx.cancel(txId)
+  .then(() => single(txId))
+}
+
+module.exports = {batch, single, cancel}