_update_desktop_environment() {
    # update icon cache
    xdg-icon-resource forceupdate --theme hicolor &> /dev/null

    # update desktop database
    update-desktop-database -q

    # update mime database
    echo "==> updating mime database"
    update-mime-database /usr/share/mime &> /dev/null
}

_add_server_user() {
    if ! getent passwd etlegacy >/dev/null; then
        useradd -rM -d /var/lib/etlegacy-server -c "ET Legacy dedicated server" -s /bin/false etlegacy
    fi
}

_delete_server_user() {
    if getent passwd etlegacy >/dev/null; then
        userdel etlegacy
    fi
}

_chown_server_home() {
    chown -R etlegacy:etlegacy /var/lib/etlegacy-server
}

post_install() {
    _add_server_user
    _chown_server_home
    _update_desktop_environment
}

post_remove() {
    _delete_server_user
    _update_desktop_environment
}