#!/usr/bin/env bash
# prompt.sh — plain y/N prompts.

# ask "prompt?" [default y|n]  -> sets REPLY
# Under ${ALL:-0} (the --yes flag) assume the stated default without
# reading stdin, so a fully non-interactive run never blocks on a read.
ask() {
  local p="$1" d="${2:-y}" hint
  if [[ "$d" == "y" ]]; then hint="[Y/n]"; else hint="[y/N]"; fi
  if (( ${ALL:-0} )); then
    REPLY="$d"
    return
  fi
  read -rp "$p $hint " REPLY
  [[ -z "$REPLY" ]] && REPLY="$d"
}

# yn "prompt?" [default]  -> returns 0 (true) if answer is yes
yn() {
  ask "$1" "${2:-y}"
  [[ "$REPLY" =~ ^[Yy]$ ]]
}

# confirm_once "prompt?" default  -> for destructive single confirm
confirm_once() { yn "$1" "${2:-n}"; }