105 lines
3.2 KiB
TypeScript
105 lines
3.2 KiB
TypeScript
import { readFileSync, writeFileSync, statSync, copyFileSync } from 'fs'
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import { resolve } from 'path'
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import { homedir } from 'os'
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import yaml from 'js-yaml'
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import CronParser from 'cron-parser'
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import { Backend, Config } from './types'
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import { makeArrayIfIsNot, makeObjectKeysLowercase, rand } from './utils'
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export enum LocationFromPrefixes {
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Filesystem,
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DockerVolume,
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}
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export const normalizeAndCheckBackends = (config: Config) => {
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config.backends = makeObjectKeysLowercase(config.backends)
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for (const [name, { type, path, key, ...rest }] of Object.entries(config.backends)) {
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if (!type || !path) throw new Error(`The backend "${name}" is missing some required attributes`)
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const tmp: any = {
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type,
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path,
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key: key || rand(128),
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}
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for (const [key, value] of Object.entries(rest)) tmp[key.toUpperCase()] = value
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config.backends[name] = tmp as Backend
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}
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}
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export const normalizeAndCheckLocations = (config: Config) => {
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config.locations = makeObjectKeysLowercase(config.locations)
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const backends = Object.keys(config.backends)
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const checkDestination = (backend: string, location: string) => {
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if (!backends.includes(backend)) throw new Error(`Cannot find the backend "${backend}" for "${location}"`)
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}
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for (const [name, { from, to, cron, ...rest }] of Object.entries(config.locations)) {
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if (!from) throw new Error(`The location "${name.blue}" is missing the "${'from'.underline.red}" source folder. See https://git.io/Jf0xw`)
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if (!to || (Array.isArray(to) && !to.length))
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throw new Error(`The location "${name.blue}" has no backend "${'to'.underline.red}" to save the backups. See https://git.io/Jf0xw`)
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for (const t of makeArrayIfIsNot(to)) checkDestination(t, name)
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if (cron) {
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try {
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CronParser.parseExpression(cron)
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} catch {
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throw new Error(`The location "${name.blue}" has an invalid ${'cron'.underline.red} entry. See https://git.io/Jf0xP`)
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}
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}
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}
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}
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const findConfigFile = (custom: string): string => {
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const config = '.autorestic.yml'
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const paths = [resolve(custom || ''), resolve('./' + config), homedir() + '/' + config]
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for (const path of paths) {
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try {
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const file = statSync(path)
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if (file.isFile()) return path
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} catch (e) {}
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}
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throw new Error('Config file not found')
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}
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export let CONFIG_FILE: string = ''
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export const init = (custom: string): Config => {
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const file = findConfigFile(custom)
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CONFIG_FILE = file
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const parsed = yaml.safeLoad(readFileSync(CONFIG_FILE).toString())
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if (!parsed || typeof parsed === 'string') throw new Error('Could not parse the config file')
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const raw: Config = makeObjectKeysLowercase(parsed)
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const current = JSON.stringify(raw)
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normalizeAndCheckBackends(raw)
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normalizeAndCheckLocations(raw)
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const changed = JSON.stringify(raw) !== current
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if (changed) {
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const OLD_CONFIG_FILE = CONFIG_FILE + '.old'
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copyFileSync(CONFIG_FILE, OLD_CONFIG_FILE)
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writeFileSync(CONFIG_FILE, yaml.safeDump(raw))
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console.log(
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'\n' +
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'⚠️ MOVED OLD CONFIG FILE TO: ⚠️'.red.underline.bold +
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'\n' +
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OLD_CONFIG_FILE +
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'\n' +
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'What? Why? '.grey +
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'https://git.io/Jf0xK'.underline.grey +
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'\n'
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)
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}
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return raw
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}
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