#!/usr/bin/env zsh

pidfile=${XDG_RUNTIME_DIR-/run/user/$UID}/xscreensaver-companion.pid
trap "rm -f $pidfile" INT KILL

function init_pidfile
{
    local pid
    if read pid < $pidfile; then
        if kill -0 $pid; then
            echo 'I am already running!' >&2
            exit 1
        else
            echo 'Remove stale lock file.' >&2
            rm $pidfile
        fi
    fi
    echo $$ > $pidfile
}

function parse_actions
{
    while read action _; do
        case $action in
            (LOCK|BLANK)
                /usr/bin/setxkbmap us -option
                /usr/bin/numlockx off
                /usr/bin/notify-send DUNST_COMMAND_PAUSE
                ;;
            (UNBLANK)
                $HOME/git/mine/vscripts/mykblayouts
                /usr/bin/notify-send DUNST_COMMAND_RESUME
                ;;
        esac
    done
}

init_pidfile
/usr/bin/xscreensaver-command -watch | parse_actions