menu WIP

script.sh

#!/bin/bash
set -euo pipefail

# Simple interactive menu:
# - Navigate with Up/Down arrows
# - Press 1..9 to select instantly (if present)
# - For 10+ items, type digits (e.g. 12) then Enter
# - Press Enter to confirm current selection
# - Press q or Esc to quit

OPTIONS=("$@")
if [[ "${#OPTIONS[@]}" -eq 0 ]]; then
  # Default options if none were provided on the command line
  OPTIONS=("Create New Session" "Enter Existing Session")
fi
selected=0
typed_number=""

cleanup() {
  # restore cursor + clear styling
  tput cnorm 2>/dev/null || true
  printf '\033[0m' || true
}
# Arrange to call trapERR when an error is raised
trap cleanup ERR EXIT INT TERM


draw_main_menu() {
  # clear screen + move cursor home
  printf '\033[2J\033[H'
  printf 'Use \033[1m↑/↓\033[0m or \033[1mnumber keys\033[0m. Enter=confirm, q/Esc=quit\n'
  if [[ -n "$typed_number" ]]; then
    printf 'Typed: \033[1m%s\033[0m (Enter to select)\n' "$typed_number"
  fi
  printf '\n'
  for i in "${!OPTIONS[@]}"; do
    if [[ "$i" -eq "$selected" ]]; then
      # reverse video highlight
      printf '  \033[7m%d) %s\033[0m\n' "$((i+1))" "${OPTIONS[$i]}"
    else
      printf '   %d) %s\n' "$((i+1))" "${OPTIONS[$i]}"
    fi
  done
}

draw_session_menu() {
    # clear screen + move cursor home
    printf '\033[2J\033[H'
    printf 'Use \033[1m↑/↓\033[0m or \033[1mnumber keys\033[0m. Enter=confirm, q/Esc=quit\n'
    if [[ -n "$typed_number" ]]; then
        printf 'Typed: \033[1m%s\033[0m (Enter to select)\n' "$typed_number"
    fi
    printf '\n'
    for i in "${!OPTIONS[@]}"; do
        if [[ "$i" -eq "$selected" ]]; then
        # reverse video highlight
        printf '  \033[7m%d) %s\033[0m\n' "$((i+1))" "${OPTIONS[$i]}"
        else
        printf '   %d) %s\n' "$((i+1))" "${OPTIONS[$i]}"
        fi
    done
}

confirm() {
  local idx="$1"
  printf '\nYou picked: %d) %s\n' "$((idx+1))" "${OPTIONS[$idx]}"
  echo "TODO: implement action for selection $((idx+1))"
  
}

main() {
  tput civis 2>/dev/null || true # hide cursor

  while true; do
    draw_main_menu

    # read a single key (silent, no echo)
    IFS= read -rsn1 key || true

    case "$key" in
      "")
        # Enter: if the user typed a number, use it; otherwise confirm highlight
        if [[ -n "$typed_number" ]]; then
          if [[ "$typed_number" =~ ^[0-9]+$ ]]; then
            # interpret as 1-based menu number
            num=$typed_number
            typed_number=""
            if (( num >= 1 && num <= ${#OPTIONS[@]} )); then
              selected=$((num - 1))
              draw_menu
              confirm "$selected"
              break
            fi
          fi
          typed_number=""
        fi
        draw_menu
        confirm "$selected"
        break
        ;; # Enter
      q|Q) echo; echo "Bye!"; break ;;
      $'\x7f'|$'\b')
        # Backspace
        if [[ -n "$typed_number" ]]; then
          typed_number="${typed_number::-1}"
        fi
        ;;
      [0-9])
        # Digit: if 1..9 and within range, select instantly.
        # Otherwise accumulate digits (e.g. for 10+).
        if [[ -z "$typed_number" ]]; then
          num=$key
          if (( num >= 1 && num <= 9 && num <= ${#OPTIONS[@]} )); then
            selected=$((num - 1))
            draw_menu
            confirm "$selected"
            break
          fi
        fi
        typed_number+="$key"
        ;;
      $'\e')
        # Could be Esc alone OR an arrow key sequence.
        # Arrow keys typically arrive as: ESC [ A/B
        IFS= read -rsn2 -t 0.025 rest || rest=""
        if [[ "$rest" == "[A" ]]; then
          # Up
          selected=$((((selected - 1) + ${#OPTIONS[@]}) % ${#OPTIONS[@]}))
        #   ((selected = (selected - 1)))
          typed_number=""
        elif [[ "$rest" == "[B" ]]; then
          # Down
        #   ((selected = (selected + 1)))
          selected=$((((selected + 1)) % ${#OPTIONS[@]}))
          typed_number=""
        else
          # Esc by itself -> quit
          echo; echo "Bye!"
          break
        fi
        ;;
    esac
  done
}

main



#!/usr/bin/env bash
set -euo pipefail

# Prints: "<screen_id> attached" or "<screen_id> detached" for each session.

out="$(screen -ls 2>/dev/null || true)"

if [[ -z "${out//[[:space:]]/}" ]] || grep -qiE 'no sockets found' <<<"$out"; then
  echo "No screen sessions."
  exit 0
fi

printf '%s\n' "$out" | awk '
  match($0, /^[ \t]*([0-9]+)\.[^ \t]+[ \t]*\(([^)]*)\)+[ \t]*\(([^)]*)\)/, m) {
    num=m[1]
    state=tolower(m[3])
    print num " " state
    
  }
'