#!/bin/bash

post_install() {
	dkms_install $1
}

pre_upgrade() {
	dkms_remove $2
}

pre_remove() {
	dkms_remove $1
}

post_upgrade() {
	dkms_install $1
}

dkms_remove() {
	local line=`dkms status -m netatop`
	# in cases where the passed ${1%%-*} fails, use this as a fallback for detecting
	# which version is installed:
	# version=`dkms status netatop | tr -d ' \n' | awk -F ',' '{print $2}'`
	if echo "$line" | grep -E 'added|built|installed'; then
		dkms remove -m netatop -v ${1%%-*} --all
	else
		echo "No current dkms module found, skipping dkms remove"
	fi
}

dkms_install() {
	echo ">>> DKMS: Module install"

	dkms install -m netatop -v ${1%%-*}

	echo ''
	echo ''

cat << EOF
It's recommended to execute the following commands to load the module:

 rmmod netatop
 modprobe netatop
 /usr/bin/depmod -a
EOF
}