keyboard

#!/bin/sh

set -eu

__help="Usage: ${0##*/} [OPTIONS] SUBCOMMAND

Manipulate the built-in keyboard.

Options:
  -h, --help    display this help and exit

Subcommands:
  on            enable the built-in keyboard
  off           disable the built-in keyboard
  toggle        toggle the built-in keyboard"

device_name='AT Translated Set 2 keyboard'
id=$(xinput list --id-only "$device_name")
state=$(xinput list-props "$id" | grep 'Device Enabled' | awk '{print $4}')

sub_on() {
  xinput enable "$id"
  notify-send --urgency=normal 'Keyboard: Enabled'
}

sub_off() {
  xinput disable "$id"
  notify-send --urgency=normal 'Keyboard: Disabled'
}

sub_toggle() {
  if [ "$state" -eq 1 ]; then
    sub_off
  else
    sub_on
  fi
}

[ $# -ge 1 ] || { printf "Error: missing subcommand.\\n\\n%s\\n" "$__help" && exit 0; }
sub="$1"
[ "$sub" = '-h' ] || [ "$sub" = '--help' ] && { echo "$__help" && exit 0; }
[ "$(command -v "sub_$sub")" ] || { printf "Error: unknown subcommand: %s.\\n\\n%s\\n" "$sub" "$__help" && exit 1; }
shift
[ -z "$*" ] || { echo "Error: unexpected positional arguments: $*." && exit 1; }
"sub_$sub"