menu arrow down up selection bash

menu.from.command.sh

awsprofiles(){
  grep -Eo "\[.*\]" $HOME/.aws/credentials | sed 's/[][]//g' | nl
}

prompt_goto(){
  local mopts=$1
  tput cup $mopts 1
  echo "Go to: "
  tput cup $mopts 8
}

clear
max=$(($(cat <(awsprofiles) | wc -l)-1))
mopts=$((max+4))

# echo $max
awsprofiles
c=1
tput cup 0 1
while true # Forever = until ctrl+c
do
        # r: backslash is not for escape
            # s: silent
                # "n x": read x chars before returning
  read -rsn 1
    case $REPLY in
      g|G)
        prompt_goto $mopts
        read
        
        if [[ $REPLY -gt $max ]]; then
          c=$((max))
        else
          c=$((REPLY-1))
        fi;
        tput cup $c 1
        ;;

      q|Q)
        break;;
      A) 
        if [[ $c -gt 1 ]]; then 
          c=$((c-1))
          tput cuu 1
        else
          c=$max
          tput cup $max 1
        fi
        ;;
      B)
        if [[ $c -eq $max ]]; then
          c=1
          tput cup 0 1
        else
          c=$((c+1))
          tput cud1
        fi
        ;;
  esac
done