import { execFile } from 'node:child_process'
import { promises as fsp } from 'node:fs'
import * as path from 'node:path'

function tar(args: string[]): Promise<void> {
  return new Promise((resolve, reject) => {
    execFile('tar', args, { timeout: 120_000 }, (err, _stdout, stderr) => {
      if (err) {
        reject(new Error(`tar ${args[0]} 失败: ${(stderr ?? '').toString().trim() || err.message}`))
        return
      }
      resolve()
    })
  })
}

export async function packHandoff(stagingDir: string, outFile: string): Promise<void> {
  await fsp.mkdir(path.dirname(outFile), { recursive: true })
  await tar(['-czf', outFile, '-C', stagingDir, '.'])
}

export async function unpackHandoff(archive: string, dstDir: string): Promise<void> {
  await fsp.mkdir(dstDir, { recursive: true })
  await tar(['-xzf', archive, '-C', dstDir])
}