autorestic/src/config.ts

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import { readFileSync, writeFileSync, statSync } from 'fs'
import { resolve } from 'path'
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import yaml from 'js-yaml'
import { flags } from './autorestic'
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import { Backend, Config } from './types'
import { makeObjectKeysLowercase, rand } from './utils'
import { homedir } from 'os'
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export const normalizeAndCheckBackends = (config: Config) => {
config.backends = makeObjectKeysLowercase(config.backends)
for (const [name, { type, path, key, ...rest }] of Object.entries(
config.backends
)) {
if (!type || !path)
throw new Error(
`The backend "${name}" is missing some required attributes`
)
const tmp: any = {
type,
path,
key: key || rand(128),
}
for (const [key, value] of Object.entries(rest))
tmp[key.toUpperCase()] = value
config.backends[name] = tmp as Backend
}
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}
export const normalizeAndCheckBackups = (config: Config) => {
config.locations = makeObjectKeysLowercase(config.locations)
const backends = Object.keys(config.backends)
const checkDestination = (backend: string, backup: string) => {
if (!backends.includes(backend))
throw new Error(`Cannot find the backend "${backend}" for "${backup}"`)
}
for (const [name, { from, to, ...rest }] of Object.entries(
config.locations
)) {
if (!from || !to)
throw new Error(
`The backup "${name}" is missing some required attributes`
)
if (Array.isArray(to)) for (const t of to) checkDestination(t, name)
else checkDestination(to, name)
}
}
const findConfigFile = (): string => {
const config = '.autorestic.yml'
const paths = [
resolve(flags.config || ''),
resolve('./' + config),
homedir() + '/' + config,
]
for (const path of paths) {
try {
const file = statSync(path)
if (file.isFile()) return path
} catch (e) {}
}
throw new Error('No Config file found')
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}
export let CONFIG_FILE: string = ''
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export const init = (): Config | undefined => {
try {
CONFIG_FILE = findConfigFile()
} catch (e) {
return
}
const raw: Config = makeObjectKeysLowercase(
yaml.safeLoad(readFileSync(CONFIG_FILE).toString())
)
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normalizeAndCheckBackends(raw)
normalizeAndCheckBackups(raw)
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writeFileSync(CONFIG_FILE, yaml.safeDump(raw))
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return raw
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}