/** Shared helpers for drive-resident /bin scripts (prepended before each command). */
function bareStdin(ctx) {
  return typeof ctx.shellStdin === 'string' ? ctx.shellStdin : ''
}

async function run(ctx, argv) {
  const flagArgs = argv.slice(1).filter((a) => a.startsWith('-') && a !== '--')
  const all = argv.includes('-a')
  const noFlag = flagArgs.length === 0
  const wantS = all || argv.includes('-s') || noFlag
  const wantN = all || argv.includes('-n')
  const wantR = all || argv.includes('-r')
  const wantM = all || argv.includes('-m')
  const wantV = all || argv.includes('-v')

  let name = 'BareOS'
  let version = '0.1'
  const buf = await ctx.vfs.readFile('/etc/os-release')
  if (buf) {
    const t = ctx.b4a.toString(buf)
    for (const line of t.split('\n')) {
      const id = line.match(/^NAME=(.*)$/)
      if (id) name = id[1].replace(/^"|"$/g, '')
      const ver = line.match(/^VERSION=(.*)$/)
      if (ver) version = ver[1].replace(/^"|"$/g, '')
    }
  }

  const parts = []
  if (wantS) parts.push(name)
  if (wantN) parts.push('bare-os')
  if (wantR) parts.push(version)
  if (wantV) parts.push('bare-userland')
  if (wantM) parts.push('unknown')

  ctx.console.log(parts.join(' '))
}