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import {mkdirSync, readdirSync, statSync} from 'node:fs'
import * as os from 'node:os'
import * as path from 'node:path'
import {nanoid} from 'nanoid'
import {rimrafSync} from 'rimraf'
// Invariably obliterate contents of the rootDirectory upon
// mtui startup if their mtime is older than this duration
// before the current date.
const ancient = 7 * 24 * 60 * 60 * 1000
const ourTemporaryDirectories = []
const rootDirectory = path.join(os.homedir(), '.mtui', 'tmp')
function obliterateTemporaryDirectory(tempdir) {
const rel = path.relative(rootDirectory, tempdir)
if (rel.startsWith('/') || rel.startsWith('.')) {
console.trace()
console.error(`Ostensible tempdir located here:`)
console.error(tempdir)
console.error(`Doesn't appear to be located in tempdir root:`)
console.error(rootDirectory)
console.error(`This is a programming error, and possibly dangerous.`)
console.error(`So, exiting now. This should be investigated.`)
process.exit(1)
}
rimrafSync(tempdir)
}
function cleanupAncient() {
const fsOp = (fn, ...args) => {
try {
return fn(...args)
} catch (error) {
console.error(error)
console.error(`There was an error preparing the temporary file directory.`)
console.error(`You may be able to resolve this by deleting or moving away`)
console.error(`this path:`)
console.error(rootDirectory)
process.exit(1)
}
}
fsOp(() =>
mkdirSync(rootDirectory, {recursive: true}))
const tempdirs =
(fsOp(readdirSync, rootDirectory)
.map(dir => path.join(rootDirectory, dir)))
let first = true
for (const tempdir of tempdirs) {
const stats = fsOp(statSync, tempdir)
if (Date.now() - stats.mtimeMs > ancient) {
if (first) {
console.log(`One or more tempdirs haven't been modified in a while, removing:`)
first = false
}
console.log(tempdir)
fsOp(obliterateTemporaryDirectory, tempdir)
}
}
}
// This has to be a sync function, since it'll run on
// the process' 'exit' event.
function cleanupOurs() {
for (const tempdir of ourTemporaryDirectories) {
obliterateTemporaryDirectory(tempdir)
}
}
cleanupAncient()
process.on('exit', cleanupOurs)
export default function temporaryDirectory() {
const name = nanoid()
const dir = path.join(rootDirectory, name)
ourTemporaryDirectories.push(dir)
mkdirSync(dir)
return dir
}
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