#!/bin/bash

set -e

configure() {
    LOGDIR="/var/log/atop"
    # this has been in place since at least buster. remove post-trixie
    rm -f "${LOGDIR}/dummy_after" "${LOGDIR}/dummy_before"
    # check whether atop will read its own latest file
    # point atop to the latest file and check for output on stdout
    # the pipe will prevent atop from going interactive, and if it
    # won't read the file, stdout will be empty.
    LATESTFILE="$(find "${LOGDIR}" -maxdepth 1 -type f \
            -regextype posix-egrep -regex '.*/atop_[0-9]+$' \
            -printf '%p\n' | sort | tail -n 1)"
    if [ -n "${LATESTFILE}" ]; then
        if ! atop -r "${LATESTFILE}" 2>/dev/null | head -n 5 | grep -q '.'; then
            # updating from an older version which won't read
            # the old log file format
            # take a backup of the old file and convert it
            BACKUPFILE="${LATESTFILE}_oldformat"
            if [ -e "${BACKUPFILE}" ]; then
                TIMESTAMP=$(date +%Y%m%dT%H%M%S)
                BACKUPFILE="${LATESTFILE}_oldformat_${TIMESTAMP}"
            fi
            if mv "${LATESTFILE}" "${BACKUPFILE}"; then
                if atopconvert "${BACKUPFILE}" "${LATESTFILE}" >/dev/null; then
                    if ! atop -r "${LATESTFILE}" 2>/dev/null | head -n 5 | grep -q '.'; then
                        printf >&2 "atop postinst: error reading converted log file %s.\\n" "${LATESTFILE}"
                        # remove generated file, we do without the converted file
                        rm -f "${LATESTFILE}"
                    fi
                else
                    printf >&2 "atop postinst: conversion failed from %s to new atop raw file format %s" "${BACKUPFILE}" "${LATESTFILE}"
                    # remove generated file, we do without the converted file
                    rm -f "${LATESTFILE}"
                fi
            else
                printf >&2 "atop postinst: failed to back up %s\\n" "${LATESTFILE}"
                exit 1
            fi
        fi
    fi
}

case "$1" in
    configure) configure ;;
esac

# Automatically added by dh_installdeb/13.27
dpkg-maintscript-helper rm_conffile /etc/logrotate.d/psaccs_atop -- "$@"
dpkg-maintscript-helper rm_conffile /etc/logrotate.d/psaccu_atop -- "$@"
# End automatically added section
# Automatically added by dh_installinit/13.27
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "$DPKG_ROOT" ] && [ -x "/etc/init.d/atopacct" ]; then
		update-rc.d atopacct defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d --skip-systemd-native atopacct $_dh_action || exit 1
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/13.27
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "$DPKG_ROOT" ] && [ -x "/etc/init.d/atop" ]; then
		update-rc.d atop defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d --skip-systemd-native atop $_dh_action || exit 1
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.27
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 'atop-rotate.timer' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'atop-rotate.timer'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'atop-rotate.timer' >/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 'atop-rotate.timer' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.27
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 'atop-rotate.timer' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.27
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 'atopacct.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'atopacct.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'atopacct.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 'atopacct.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.27
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 'atopacct.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.27
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 'atop.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'atop.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'atop.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 'atop.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.27
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 'atop.service' >/dev/null || true
	fi
fi
# End automatically added section


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