86 lines
1.9 KiB
JavaScript
86 lines
1.9 KiB
JavaScript
const _ = require('lodash/fp')
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const pgp = require('pg-promise')()
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const db = require('./db')
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const BN = require('./bn')
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module.exports = {postCashIn}
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const UPDATEABLE_FIELDS = ['fee', 'txHash', 'phone', 'error']
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function postCashIn (tx, pi) {
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const TransactionMode = pgp.txMode.TransactionMode
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const isolationLevel = pgp.txMode.isolationLevel
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const tmSRD = new TransactionMode({tiLevel: isolationLevel.serializable})
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function transaction (t) {
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const sql = 'select * from cash_in_txs where id=$1'
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return t.oneOrNone(sql, [tx.id])
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.then(row => upsert(row, tx))
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}
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transaction.txMode = tmSRD
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return db.tx(transaction)
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.then(txVector => postProcess(txVector, pi))
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.then(changes => update(tx.id, changes))
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}
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function diff (oldTx, newTx) {
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let updatedTx = {}
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UPDATEABLE_FIELDS.forEach(fieldKey => {
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if (_.isEqual(oldTx[fieldKey], newTx[fieldKey])) return
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updatedTx[fieldKey] = newTx[fieldKey]
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})
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return updatedTx
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}
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function toObj (row) {
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const keys = _.keys(row)
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let newObj = {}
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keys.forEach(key => {
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const objKey = _.camelCase(key)
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if (key === 'crypto_atoms' || key === 'fiat') {
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newObj[objKey] = BN(row[key])
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return
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}
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newObj[objKey] = row[key]
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})
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return newObj
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}
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function upsert (row, tx) {
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const oldTx = toObj(row)
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if (oldTx) return insert(tx)
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return update(tx.id, diff(oldTx, tx))
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}
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function insert (tx) {
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const dbTx = _.mapKeys(_.snakeCase, tx)
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const sql = pgp.helpers.insert(dbTx, null, 'cash_in_txs')
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return db.none(sql)
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}
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function update (txId, changes) {
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const dbChanges = _.mapKeys(_.snakeCase, changes)
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const sql = pgp.helpers.update(dbChanges, null, 'cash_in_txs') +
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pgp.as.format(' where id=$1', [txId])
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return db.none(sql)
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}
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function postProcess (txVector, pi) {
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const [oldTx, newTx] = txVector
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if (newTx.sent && !oldTx.sent) {
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return pi.sendCoins(newTx)
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.then(txHash => ({txHash}))
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.catch(error => ({error}))
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}
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}
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