post_install() {
    echo "==> Setting up VBX permissions..."

    # Reload udev rules
    echo "==> Reloading udev rules..."
    udevadm control --reload-rules >/dev/null 2>&1 || true
    udevadm trigger --subsystem-match=input --action=change >/dev/null 2>&1 || true

    # Determine installing user
    CURRENT_USER="${SUDO_USER:-$USER}"

    if [ -n "$CURRENT_USER" ] && [ "$CURRENT_USER" != "root" ]; then
        echo "==> Adding user '$CURRENT_USER' to 'input' group..."
        if ! id -nG "$CURRENT_USER" | grep -qw input; then
            usermod -a -G input "$CURRENT_USER" 2>/dev/null || true
        fi

        echo "==> Applying ACLs to existing input devices..."
        for dev in /dev/input/event*; do
            [ -e "$dev" ] && setfacl -m "u:${CURRENT_USER}:rw" "$dev" 2>/dev/null || true
        done

        echo ""
        echo "==> VBX setup complete for user '$CURRENT_USER'"
        echo "    ACLs apply to current devices; future ones are handled by udev (TAG+=uaccess)."
        echo "    Run 'vbx' to test keyboard sounds."
    else
        echo "==> Could not determine install user."
        echo "    To enable VBX manually, run: sudo usermod -a -G input \$USER"
    fi
}

post_upgrade() {
    post_install
}

post_remove() {
    echo "==> Removing VBX udev rules..."
    udevadm control --reload-rules >/dev/null 2>&1 || true
    udevadm trigger --subsystem-match=input --action=change >/dev/null 2>&1 || true
}