#!/bin/sh

set -e

. /usr/share/debconf/confmodule

OLD_CONF="/etc/default/ntopng.dpkg-backup"
CONF="/etc/ntopng.conf"
OLD_DATA_DIR="/var/tmp/ntopng"
DATA_DIR="/var/lib/ntopng"


if [ "$1" = configure ]; then
    if [ -f $OLD_CONF ]; then
        # Migrate settings (except ADD_ARGS) from /etc/default/ntopng to
        # /etc/ntopng.conf
        . $OLD_CONF || true
        if [ -n "$HTTP_PORT" ]; then
            sed -i -e "s/^-w=.*\$/-w=$HTTP_PORT/" $CONF
        fi
        if [ -n "$INTERFACES" ]; then
            # Make sure the file ends with a newline.
            echo >> $CONF
            for i in $INTERFACES; do
                echo "-i=$i" >> $CONF
            done
        fi
    fi

    adduser --quiet --system --group --home $DATA_DIR --no-create-home ntopng
    chown ntopng:ntopng $DATA_DIR
    chmod 700 $DATA_DIR

    # Migrate data according to
    # https://www.ntop.org/support/faq/migrate-the-data-directory-in-ntopng/
    # in a safe way (i.e. no recursive chmod/chown, to ensure we only migrate
    # files readable by the user nobody, and the new files are written as
    # the ntopng user with permissions).
    if [ -d $OLD_DATA_DIR ]; then
        echo Migrating data from $OLD_DATA_DIR to $DATA_DIR...
        runuser -u nobody -- tar cf - -C $OLD_DATA_DIR . \
            | ( umask 077; runuser -u ntopng -- tar xf - -C $DATA_DIR )
        mv $OLD_DATA_DIR "$OLD_DATA_DIR.dpkg-old.$(date --iso-8601=seconds)"
    fi

    # Fix permissions of /var/log/ntopng. Older version may have left a
    # world-writable log file.
    chown root:ntopng /var/log/ntopng
    chmod 770 /var/log/ntopng
    chown -fR ntopng:ntopng /var/log/ntopng/* || true
    chmod -fR 600 /var/log/ntopng/* || true
fi


# Automatically added by dh_installinit/13.15.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "${DPKG_ROOT:-}" ] && [ -x "/etc/init.d/ntopng" ]; then
		update-rc.d ntopng defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d --skip-systemd-native ntopng $_dh_action || exit 1
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.15.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# The following line should be removed in trixie or trixie+1
	deb-systemd-helper unmask 'ntopng.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'ntopng.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'ntopng.service' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'ntopng.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.15.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -d /run/systemd/system ]; then
		systemctl --system daemon-reload >/dev/null || true
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		deb-systemd-invoke $_dh_action 'ntopng.service' >/dev/null || true
	fi
fi
# End automatically added section