lamassu-server/lib/settings-loader.js
Josh Harvey 340ad2b518 WIP
2017-03-20 16:43:40 +02:00

153 lines
3.4 KiB
JavaScript

const path = require('path')
const fs = require('fs')
const _ = require('lodash/fp')
const argv = require('minimist')(process.argv.slice(2))
const pify = require('pify')
const db = require('./db')
const schema = require('../lamassu-schema.json')
const mapWithKey = _.map.convert({cap: false})
let settingsCache
function expandFixture (fixture) {
const deviceId = argv.machine
function findField (code) {
const field = _.find(_.matchesProperty('code', code), schema.fields)
const group = _.find(r => _.includes(code, r.fields), schema.groups)
if (!field || !group) {
throw new Error('No such field from fixture: ' + code)
}
return _.merge({cryptoScope: group.cryptoScope, machineScope: group.machineScope}, field)
}
function expand (value, code) {
const field = findField(code)
const machine = field.machineScope === 'specific'
? deviceId
: 'global'
const crypto = field.cryptoScope === 'specific'
? 'BTC'
: 'global'
return {
fieldLocator: {
fieldScope: {crypto, machine},
code,
fieldType: field.fieldType,
fieldClass: field.fieldClass
},
fieldValue: {
fieldType: field.fieldType,
value
}
}
}
return mapWithKey(expand, fixture)
}
function loadFixture () {
const fixture = argv.fixture
const deviceId = argv.machine
if (fixture && !deviceId) throw new Error('Missing --machine parameter for --fixture')
const fixturePath = fixture => path.resolve(__dirname, '..', 'test', 'fixtures', fixture + '.json')
const promise = fixture
? pify(fs.readFile)(fixturePath(fixture)).then(JSON.parse)
: Promise.resolve({})
return promise
.then(expandFixture)
}
function isEquivalentField (a, b) {
return _.isEqual(
[a.fieldLocator.code, a.fieldLocator.fieldScope],
[b.fieldLocator.code, b.fieldLocator.fieldScope]
)
}
// b overrides a
function mergeValues (a, b) {
return _.unionWith(isEquivalentField, b, a)
}
function load (versionId) {
if (!versionId) throw new Error('versionId is required')
return Promise.all([loadConfig(versionId), loadAccounts()])
.then(([config, accounts]) => ({
config,
accounts
}))
}
function loadLatest () {
return Promise.all([loadLatestConfig(), loadAccounts()])
.then(([config, accounts]) => ({
config,
accounts
}))
}
function loadConfig (versionId) {
if (argv.fixture) return loadFixture()
const sql = `select data
from user_config
where id=$1 and type=$2`
return db.oneOrNone(sql, [versionId, 'config'])
.then(row => row ? row.data.config : [])
}
function loadLatestConfig () {
const sql = `select data
from user_config
where type=$1
order by id desc
limit 1`
return db.oneOrNone(sql, ['config'])
.then(row => row ? row.data.config : [])
}
function loadAccounts () {
const toFields = fieldArr => _.fromPairs(_.map(r => [r.code, r.value], fieldArr))
const toPairs = r => [r.code, toFields(r.fields)]
return db.oneOrNone('select data from user_config where type=$1', 'accounts')
.then(function (data) {
if (!data) return {}
return _.fromPairs(_.map(toPairs, data.data.accounts))
})
}
function settings () {
return settingsCache
}
function save (config) {
const sql = 'insert into user_config (type, data) values ($1, $2)'
return db.none(sql, ['config', config])
}
module.exports = {
settings,
loadConfig,
load,
loadLatest,
save,
loadFixture,
mergeValues
}