pre_install() {
	if systemctl status mullvad-daemon &> /dev/null; then
		echo 'Stopping & disabling Mullvad VPN daemon...'
		/opt/Mullvad\ VPN/resources/mullvad-setup prepare-restart || true
		systemctl disable --now mullvad-daemon
	fi

	pkill -x "mullvad-gui" || true

	rm -f /var/cache/mullvad-vpn/relays.json
	rm -f /var/cache/mullvad-vpn/api-ip-address.txt
}

post_install() {
	chmod u+s "/usr/bin/mullvad-exclude"

	echo 'Enabling Mullvad VPN daemon...'
	systemctl enable --now mullvad-daemon
}

pre_upgrade() {
	pre_install
}

post_upgrade() {
	echo 'Starting & enabling Mullvad VPN daemon...'
	systemctl daemon-reload
	systemctl enable --now mullvad-daemon

	chmod u+s "/usr/bin/mullvad-exclude"
}

pre_remove() {
	# the user might've disabled or stopped the service themselves already
	echo 'Making sure the Mullvad VPN daemon is stopped & disabled...'
	systemctl stop mullvad-daemon || true
	systemctl disable mullvad-daemon || true

	/opt/Mullvad\ VPN/resources/mullvad-setup reset-firewall || echo "Failed to reset firewall"
	/opt/Mullvad\ VPN/resources/mullvad-setup clear-history || echo "Failed to remove leftover WireGuard keys"
}

post_remove() {
	echo -------------------------------------------------------------
	echo 'Optionally remove logs & cache:'
	echo 'sudo rm -rf /var/log/mullvad-vpn/'
	echo 'sudo rm -rf /var/cache/mullvad-vpn/'
	echo ''
	echo 'Optionally remove config:'
	echo 'sudo rm -rf /etc/mullvad-vpn'
	echo -------------------------------------------------------------
}