#! /bin/sh

set -e

# Source debconf library.
. /usr/share/debconf/confmodule

#		 old scripts
oldfile=/etc/adjtimex.conf
olderfile=/etc/rc.boot/adjtimex
#		 new starting script
startfile=/etc/init.d/adjtimex
#		 new configuration file
conffile=/etc/default/adjtimex

migrate_old_adjtimex_conf()
{

	TICK=10000
	FREQ=0

	if [ -f $oldfile ]; then
		TICK=`awk '
		BEGIN{tick=10000;}
		/[ \t]*TICK[ \t]*=[ \t]*"?[0-9]+"?/ {
			sub(/[ \t]*TICK[ \t]*=[ \t]*"?/,"");
			tick=$0+0;
		}
		END {print tick;}
		' $oldfile`

		FREQ=`awk '
		BEGIN{freq=0;}
		/[ \t]*FREQ[ \t]*=[ \t]*"?[0-9]+"?/ {
			sub(/[ \t]*FREQ[ \t]*=[ \t]*"?/,"");
			freq=$0+0;
		}
		END {print freq;}
		' $oldfile`

#		echo "parameters from $oldfile: TICK=$TICK FREQ=$FREQ";
	elif [ -f $olderfile ]; then
		TICK=`awk '
		BEGIN{tick=10000;}
		/[ \t]*TICK[ \t]*=[ \t]*"?[0-9]+"?/ {
			sub(/[ \t]*TICK[ \t]*=[ \t]*"?/,"");
			tick=$0+0;
		}
		END {print tick;}
		' $olderfile`

		FREQ=`awk '
		BEGIN{freq=0;}
		/[ \t]*FREQ[ \t]*=[ \t]*"?[0-9]+"?/ {
			sub(/[ \t]*FREQ[ \t]*=[ \t]*"?/,"");
			freq=$0+0;
		}
		END {print freq;}
		' $olderfile`

#		echo "parameters from $olderfile: TICK=$TICK FREQ=$FREQ";
	fi

	if [ -f $conffile ]; then
#		echo "using existing $conffile";
		true;
	elif [ -f $oldfile ] || [ -f $olderfile ]; then
		[ ! -d /etc/default ] && mkdir /etc/default
		cat >$conffile <<EOF
#  $conffile - configuration file for adjtimex(8)
#
#  you may adjust these values manually or by calling /usr/sbin/adjtimexconfig
#
#  This file is sourced by $startfile
#
TICK=$TICK
FREQ=$FREQ

EOF
	fi

	rm -f $oldfile $olderfile
}


case "$1" in
	configure)

# A previous installation may have left a corrupt conffile.
# The regexp matches only blank lines, comments, and integer assignments:
		if [ -f $conffile ]; then
			egrep -qv '^([[:space:]]*(#.*)?|[[:space:]]*[a-zA-Z][a-zA-Z0-9]*[[:space:]]*=[[:space:]]*-?[0-9]+[[:space:]]*)$' $conffile && rm -f $conffile
		fi

		migrate_old_adjtimex_conf

		# service starting depends on existence of /etc/default/adjtimex, which is ready only after running adjtimexconfig
		update-rc.d adjtimex defaults > /dev/null

		db_get adjtimex/compare_rtc
		if [ "$RET" = "true" ]; then
			adjtimexconfig
		fi

		;;
	abort-upgrade|abort-remove|abort-deconfigure)
		exit 0
		;;
	*)
		echo "postinst called with unknown argument \`$1'" >&2
		exit 0
		;;
esac

# Automatically added by dh_systemd_enable/13.24.1
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 'adjtimex.service' >/dev/null || true

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