101 lines
2.5 KiB
JavaScript
101 lines
2.5 KiB
JavaScript
const _ = require('lodash/fp')
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const db = require('./db')
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const dbm = require('./postgresql_interface')
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const T = require('./time')
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const BN = require('./bn')
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const TRANSACTION_EXPIRATION = T.day
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function httpError (msg, code) {
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const err = new Error(msg)
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err.name = 'HTTPError'
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err.code = code || 500
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return err
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}
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function stateChange (deviceId, deviceTime, rec) {
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const event = {
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id: rec.uuid,
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deviceId: deviceId,
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eventType: 'stateChange',
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note: JSON.stringify({ state: rec.state, isIdle: rec.isIdle, txId: rec.txId }),
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deviceTime: deviceTime
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}
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return dbm.machineEvent(event)
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}
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function toCashOutTx (row) {
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if (!row) return null
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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] = new 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 _.set('direction', 'cashOut', newObj)
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}
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function fetchEmailOrPhoneTx (data, type) {
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const sql = `select * from cash_out_txs
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where ${type === 'email' ? 'email' : 'phone'}=$1 and dispense=$2
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and (extract(epoch from (now() - created))) * 1000 < $3`
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const values = [data, false, TRANSACTION_EXPIRATION]
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return db.any(sql, values)
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.then(_.map(toCashOutTx))
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.then(txs => {
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const seenTxs = _.some(it => it.status !== 'notSeen', txs)
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const confirmedTxs = txs.filter(tx => _.includes(tx.status, ['instant', 'confirmed']))
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if (confirmedTxs.length > 0) {
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const reducer = (acc, val) => {
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return !acc || val.cryptoAtoms.gt(acc.cryptoAtoms) ? val : acc
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}
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const maxTx = _.reduce(reducer, null, confirmedTxs)
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return maxTx
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}
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if (txs.length > 0 && !seenTxs) throw httpError('Transaction not seen', 411)
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if (txs.length > 0 && seenTxs) throw httpError('Pending transactions', 412)
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throw httpError('No transactions', 404)
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})
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}
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function fetchEmailTx (email) {
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return fetchEmailOrPhoneTx(email, 'email')
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}
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function fetchPhoneTx (phone) {
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return fetchEmailOrPhoneTx(phone, 'phone')
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}
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function fetchStatusTx (txId, status) {
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const sql = 'select * from cash_out_txs where id=$1'
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return db.oneOrNone(sql, [txId])
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.then(toCashOutTx)
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.then(tx => {
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if (!tx) throw httpError('No transaction', 404)
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if (tx.status === status) throw httpError('Not Modified', 304)
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return tx
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})
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}
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module.exports = {
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stateChange,
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fetchPhoneTx,
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fetchEmailTx,
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fetchStatusTx,
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httpError
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}
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