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

/**
 * rm — remove files or directories.
 * Flags: -r -R --recursive, -f --force, -- ; bundled e.g. -rf
 */
async function run(ctx, argv) {
  const vfs = ctx.vfs
  let recursive = false
  let force = false
  const files = []
  let dash = false
  for (let i = 1; i < argv.length; i++) {
    const a = argv[i]
    if (dash) {
      files.push(a)
      continue
    }
    if (a === '--') {
      dash = true
      continue
    }
    if (a === '--recursive' || a === '-r' || a === '-R') {
      recursive = true
      continue
    }
    if (a === '--force' || a === '-f') {
      force = true
      continue
    }
    if (a.startsWith('-') && a.length > 1) {
      for (let j = 1; j < a.length; j++) {
        const c = a[j]
        if (c === 'r' || c === 'R') recursive = true
        else if (c === 'f') force = true
      }
      continue
    }
    files.push(a)
  }
  if (!files.length) {
    ctx.console.error('rm: missing operand')
    ctx.exitCode = 1
    return
  }
  const doRm =
    vfs && typeof vfs.rm === 'function'
      ? (p) => vfs.rm(p, { recursive, force })
      : async (p) => {
          if (recursive) throw new Error('recursive rm not supported')
          return vfs.unlink(p)
        }
  for (const f of files) {
    try {
      await doRm(f)
    } catch (e) {
      if (force) continue
      ctx.console.error('rm: ' + f + ': ' + (e.message || e))
      ctx.exitCode = 1
    }
  }
}