#!/bin/sh
# Steward: runs after the package's files are in place.
set -e

if [ "$1" = configure ]; then
	# The steward system user and Steward's directories: /etc/steward,
	# /var/lib/steward and /var/backups/steward.
	systemd-sysusers steward.conf
	systemd-tmpfiles --create steward.conf || true

	# An example configuration on the first install; an existing one is
	# never touched.
	if [ ! -e /etc/steward/steward.yaml ]; then
		/usr/bin/stewardd config --example > /etc/steward/steward.yaml.dpkg-new
		chown root:steward /etc/steward/steward.yaml.dpkg-new
		chmod 0640 /etc/steward/steward.yaml.dpkg-new
		mv /etc/steward/steward.yaml.dpkg-new /etc/steward/steward.yaml
	fi

	# The daily database backup (steward-backup.timer) is on by default. An
	# administrator's 'systemctl disable steward-backup.timer' is remembered
	# by deb-systemd-helper and kept across upgrades. Before 'stewardd init'
	# the backup skips itself (there is no database yet).
	if command -v deb-systemd-helper >/dev/null 2>&1; then
		deb-systemd-helper unmask steward-backup.timer >/dev/null || true
		if deb-systemd-helper --quiet was-enabled steward-backup.timer; then
			deb-systemd-helper enable steward-backup.timer >/dev/null || true
		else
			deb-systemd-helper update-state steward-backup.timer >/dev/null || true
		fi
	elif [ -z "$2" ] && [ -d /run/systemd/system ]; then
		systemctl enable steward-backup.timer >/dev/null 2>&1 || true
	fi

	if [ -d /run/systemd/system ]; then
		systemctl daemon-reload || true
		if systemctl is-enabled --quiet steward-backup.timer 2>/dev/null; then
			systemctl start steward-backup.timer || true
		fi
		# An upgrade restarts a running stewardd (its database is upgraded
		# when it starts). A first install starts nothing: Steward needs
		# 'stewardd init' first.
		if [ -n "$2" ] && systemctl is-active --quiet steward.service; then
			systemctl restart steward.service || echo "steward: restarting stewardd failed; see 'journalctl -u steward'" >&2
		fi
	fi

	if [ -z "$2" ]; then
		echo "Steward is installed. Next: create the database and start it, as described"
		echo "in /usr/share/doc/steward/docs/install.md:"
		echo "  sudo -u steward stewardd init && sudo systemctl enable --now steward"
		echo "Stop any other DHCP server first (Kea, dnsmasq, isc-dhcp-server): only one"
		echo "can listen on an interface's port 67. 'steward import kea' brings Kea's setup over."
	fi
fi

exit 0