post_install()
{
    getent group utserver &>/dev/null || groupadd --system utserver
    if getent passwd utserver &>/dev/null
    then
        usermod -c 'utorrent-server' -d /srv/utserver -s /bin/false utserver &>/dev/null
    else
        useradd -c 'utorrent-server' --system -g utserver -d /srv/utserver -s /bin/false utserver &>/dev/null
    fi
    passwd -l utserver &>/dev/null

    chown utserver:utserver /srv/utserver/{.,downloads,settings,torrents}
    
cat << _EOF
>>> The default download directory is /srv/utserver/downloads/
    The default web UI is http://admin:@localhost:8080/gui/
    If utserver has CPU-usage issues, try enabling 'net.low_cpu' in the
    Advanced Options.
_EOF
    true
}

post_upgrade()
{
    post_install $*
}

pre_remove()
{
    systemctl stop utserver &>/dev/null
}

post_remove()
{
    getent passwd utserver &>/dev/null && userdel utserver
    getent group utserver &>/dev/null && groupdel utserver
    true
}