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autorestic/src/handlers.ts

274 lines
8.1 KiB

import { chmodSync, renameSync, unlinkSync } from 'fs'
import { tmpdir } from 'os'
import { join, resolve } from 'path'
import axios from 'axios'
import { Writer } from 'clitastic'
import { config, INSTALL_DIR, VERSION } from './autorestic'
import { checkAndConfigureBackends, getBackendsFromLocations, getEnvFromBackend } from './backend'
import { backupAll } from './backup'
import { forgetAll } from './forget'
import showAll from './info'
import { Backends, Flags, Locations } from './types'
import {
checkIfCommandIsAvailable,
checkIfResticIsAvailable,
downloadFile,
exec,
filterObjectByKey,
ConfigError, makeArrayIfIsNot,
} from './utils'
export type Handlers = {
[command: string]: (args: string[], flags: Flags) => void
}
const parseBackend = (flags: Flags): Backends => {
if (!config) throw ConfigError
if (!flags.all && !flags.backend)
throw new Error(
'No backends specified.'.red +
'\n--all [-a]\t\t\t\tCheck all.' +
'\n--backend [-b] myBackend\t\tSpecify one or more backend',
)
if (flags.all) return config.backends
else {
const backends = makeArrayIfIsNot<string>(flags.backend)
for (const backend of backends)
if (!config.backends[backend])
throw new Error('Invalid backend: '.red + backend)
return filterObjectByKey(config.backends, backends)
}
}
const parseLocations = (flags: Flags): Locations => {
if (!config) throw ConfigError
if (!flags.all && !flags.location)
throw new Error(
'No locations specified.'.red +
'\n--all [-a]\t\t\t\tBackup all.' +
'\n--location [-l] site1\t\t\tSpecify one or more locations',
)
if (flags.all) {
return config.locations
} else {
const locations = makeArrayIfIsNot<string>(flags.location)
for (const location of locations)
if (!config.locations[location])
throw new Error('Invalid location: '.red + location)
return filterObjectByKey(config.locations, locations)
}
}
const handlers: Handlers = {
check(args, flags) {
checkIfResticIsAvailable()
const backends = parseBackend(flags)
checkAndConfigureBackends(backends)
},
backup(args, flags) {
if (!config) throw ConfigError
checkIfResticIsAvailable()
const locations: Locations = parseLocations(flags)
checkAndConfigureBackends(
filterObjectByKey(config.backends, getBackendsFromLocations(locations)),
)
backupAll(locations)
console.log('\nFinished!'.underline + ' 🎉')
},
restore(args, flags) {
if (!config) throw ConfigError
checkIfResticIsAvailable()
if (!flags.to) {
console.log(`You need to specify the restore path with --to`.red)
return
}
const locations = parseLocations(flags)
for (const [name, location] of Object.entries(locations)) {
const baseText = name.green + '\t\t'
const w = new Writer(baseText + `Starting...`)
let backend: string = Array.isArray(location.to) ? location.to[0] : location.to
if (flags.from) {
if (!location.to.includes(flags.from)) {
w.done(baseText + `Backend ${flags.from} is not a valid location for ${name}`.red)
continue
}
backend = flags.from
w.replaceLn(baseText + `Restoring from ${backend.blue}...`)
} else if (Array.isArray(location.to) && location.to.length > 1) {
w.replaceLn(baseText + `Restoring from ${backend.blue}...\tTo select a specific backend pass the ${'--from'.blue} flag`)
}
const env = getEnvFromBackend(config.backends[backend])
exec(
'restic',
['restore', 'latest', '--path', resolve(location.from), '--target', flags.to],
{ env },
)
w.done(name.green + '\t\tDone 🎉')
}
},
forget(args, flags) {
if (!config) throw ConfigError
checkIfResticIsAvailable()
const locations: Locations = parseLocations(flags)
checkAndConfigureBackends(
filterObjectByKey(config.backends, getBackendsFromLocations(locations)),
)
forgetAll(locations, flags)
console.log('\nFinished!'.underline + ' 🎉')
},
exec(args, flags) {
checkIfResticIsAvailable()
const backends = parseBackend(flags)
for (const [name, backend] of Object.entries(backends)) {
console.log(`\n${name}:\n`.grey.underline)
const env = getEnvFromBackend(backend)
const { out, err } = exec('restic', args, { env })
console.log(out, err)
}
},
async info() {
showAll()
},
async install() {
try {
checkIfResticIsAvailable()
console.log('Restic is already installed')
return
} catch {
}
const w = new Writer('Checking latest version... ⏳')
checkIfCommandIsAvailable('bzip2')
const { data: json } = await axios({
method: 'get',
url: 'https://api.github.com/repos/restic/restic/releases/latest',
responseType: 'json',
})
const archMap: { [a: string]: string } = {
x32: '386',
x64: 'amd64',
}
w.replaceLn('Downloading binary... 🌎')
const name = `${json.name.replace(' ', '_')}_${process.platform}_${archMap[process.arch]}.bz2`
const dl = json.assets.find((asset: any) => asset.name === name)
if (!dl)
return console.log(
'Cannot get the right binary.'.red,
'Please see https://bit.ly/2Y1Rzai',
)
const tmp = join(tmpdir(), name)
const extracted = tmp.slice(0, -4) //without the .bz2
await downloadFile(dl.browser_download_url, tmp)
w.replaceLn('Decompressing binary... 📦')
exec('bzip2', ['-dk', tmp])
unlinkSync(tmp)
w.replaceLn(`Moving to ${INSTALL_DIR} 🚙`)
chmodSync(extracted, 0o755)
renameSync(extracted, INSTALL_DIR + '/restic')
w.done(
`\nFinished! restic is installed under: ${INSTALL_DIR}`.underline + ' 🎉',
)
},
uninstall() {
for (const bin of ['restic', 'autorestic'])
try {
unlinkSync(INSTALL_DIR + '/' + bin)
console.log(`Finished! ${bin} was uninstalled`)
} catch (e) {
console.log(`${bin} is already uninstalled`.red)
}
},
async update() {
checkIfResticIsAvailable()
const w = new Writer('Checking for latest restic version... ⏳')
exec('restic', ['self-update'])
w.replaceLn('Checking for latest autorestic version... ⏳')
const { data: json } = await axios({
method: 'get',
url:
'https://api.github.com/repos/cupcakearmy/autorestic/releases/latest',
responseType: 'json',
})
if (json.tag_name != VERSION) {
const platformMap: { [key: string]: string } = {
darwin: 'macos',
}
const name = `autorestic_${platformMap[process.platform] || process.platform}_${process.arch}`
const dl = json.assets.find((asset: any) => asset.name === name)
const to = INSTALL_DIR + '/autorestic'
w.replaceLn('Downloading binary... 🌎')
await downloadFile(dl.browser_download_url, to)
exec('chmod', ['+x', to])
}
w.done('All up to date! 🚀')
},
version() {
console.log('version'.grey, VERSION)
},
}
export const help = () => {
console.log(
'\nAutorestic'.blue +
` - ${VERSION} - Easy Restic CLI Utility` +
'\n' +
'\nOptions:'.yellow +
`\n -c, --config Specify config file. Default: .autorestic.yml` +
'\n' +
'\nCommands:'.yellow +
'\n info Show all locations and backends' +
'\n check [-b, --backend] [-a, --all] Check backends' +
'\n backup [-l, --location] [-a, --all] Backup all or specified locations' +
'\n forget [-l, --location] [-a, --all] [--dry-run] Forget old snapshots according to declared policies' +
'\n restore [-l, --location] [--from backend] [--to <out dir>] Restore all or specified locations' +
'\n' +
'\n exec [-b, --backend] [-a, --all] <command> -- [native options] Execute native restic command' +
'\n' +
'\n install install restic' +
'\n uninstall uninstall restic' +
'\n update update restic' +
'\n help Show help' +
'\n' +
'\nExamples: '.yellow +
'https://git.io/fjVbg' +
'\n',
)
}
export const error = () => {
help()
console.log(
`Invalid Command:`.red.underline,
`${process.argv.slice(2).join(' ')}`,
)
}
export default handlers