post_install() {
    if ! getent group terraria &>/dev/null; then
      groupadd -r -g 197 terraria >/dev/null
    fi

    if ! getent passwd terraria &>/dev/null; then
        useradd -r -u 197 -g terraria -d /var/lib/terraria-server/ \
            -s /bin/bash terraria >/dev/null
    fi
}

post_upgrade() {
    post_install
}

post_remove() {
    if getent passwd terraria &>/dev/null; then
        userdel terraria >/dev/null
    fi

    if getent group terraria &>/dev/null; then
      groupdel terrara >/dev/null
    fi
}