has_old_layout()
{
	test -d /opt/sonatype-work/nexus/conf && ! test -d /var/lib/nexus/conf
}

post_install()
{
	systemd-sysusers nexus.conf
	systemd-tmpfiles --create nexus.conf

	cat <<EOF

The default URL for this installation is

	http://127.0.0.1:8081/

To change these settings edit the file

	/usr/lib/nexus/conf/nexus.properties

All logs can be found at

	/var/log/nexus

Sonatype strongly suggests using the latest Java 8 release version of Java
available from Oracle. Support for Java 9 has not been verified - DO NOT USE IT.

See https://help.sonatype.com/repomanager2/system-requirements

EOF
}

pre_upgrade()
{
	if has_old_layout; then
	   	systemctl disable --now nexus
	fi
}

post_upgrade()
{
	systemctl daemon-reload

	cat <<EOF

See Release Notes at
	https://help.sonatype.com/repomanager2/release-notes/2020-release-notes

EOF

	if has_old_layout; then
		echo ">>>"
		echo ">>>"
		echo ">>> Found old Nexus package layout."
		echo ">>>"
		echo ">>> You need to move all the content of /opt/sonatype-work/nexus"
		echo ">>> to /var/log/nexus and /var/lib/nexus, e.g."
		echo ">>>"
	    echo ">>>      mv /opt/sonatype-work/nexus/logs/* /var/log/nexus"
		echo ">>>      rm -rf /opt/sonatype-work/nexus/logs"
	    echo ">>>      mv /opt/sonatype-work/nexus/* /var/lib/nexus"
		echo ">>>"
		echo ">>> Re-enable nexus.service if needed"
		echo ">>>"
		echo ">>>      systemctl enable --now nexus.service"
		echo ">>>"
		echo ">>>"
	fi
}

pre_remove()
{
	systemctl disable --now nexus
}

post_remove()
{
	systemctl daemon-reload
}