#!/bin/sh

set -e

Install_apt ()
{
	# apt sources
	echo "Installing /etc/apt/sources.list.d/progress-linux.list ..."

cat > /etc/apt/sources.list.d/progress-linux.list << EOF
# /etc/apt/sources.list.d/progress-linux.list

EOF

	# apt preferences
	echo "Installing /etc/apt/preferences.d/progress-linux.pref ..."

cat > /etc/apt/preferences.d/progress-linux.pref << EOF
# /etc/apt/preferences.d/progress-linux.pref
EOF

	# apt key
	echo "Installing /etc/apt/trusted.gpg.d/progress-linux.gpg ..."
	rm -f /etc/apt/trusted.gpg.d/progress-linux.gpg
	for KEY in /usr/share/progress-linux/pgp-keys/*archive-key.gpg
	do
		cat "${KEY}" >> /etc/apt/trusted.gpg.d/progress-linux.gpg
	done
}

Remove_apt ()
{
	# apt sources
	echo "Removing /etc/apt/sources.list.d/progress-linux.list ..."
	rm -f /etc/apt/sources.list.d/progress-linux.list

	# apt preferences
	echo "Removing /etc/apt/sources.list.d/progress-linux.list ..."
	rm -f /etc/apt/preferences.d/progress-linux.pref

	# apt key
	echo "Removing /etc/apt/trusted.gpg.d/progress-linux.gpg ..."
	rm -f /etc/apt/trusted.gpg.d/progress-linux.gpg
}

Configure_apt ()
{
	ARCHIVE="${1}"

	case "${ARCHIVE}" in
		*-extras)
			AREAS="${ARCHIVE_AREAS}"
			;;

		*)
			AREAS="$(echo ${ARCHIVE_AREAS} | sed -e 's| restricted||')"
			;;
	esac

	# apt sources
	cat >> /etc/apt/sources.list.d/progress-linux.list << EOF
deb https://deb.progress-linux.org/packages ${ARCHIVE} ${AREAS}
EOF

	# apt preferences
	cat >> /etc/apt/preferences.d/progress-linux.pref << EOF

Package: *
Pin: release n=${ARCHIVE}
Pin-Priority: 999
EOF
}

Configure_ssh ()
{
	KEY="$(cat /usr/share/progress-linux/ssh-keys/ssh.progress-linux.org.pub)"

	echo "Installing /etc/ssh/ssh_known_hosts ..."

	if [ ! -e "/etc/ssh/ssh_known_hosts" ]
	then
		# ssh cert-authority
		mkdir -p /etc/ssh

cat > "/etc/ssh/ssh_known_hosts" << EOF
# /etc/ssh/ssh_known_hosts

@cert-authority *.progress-linux.org ${KEY}
EOF

	else
		grep -v '^@cert-authority \*.progress-linux.org' /etc/ssh/ssh_known_hosts > /etc/ssh/ssh_known_hosts.tmp

cat >> "/etc/ssh/ssh_known_hosts.tmp" << EOF
@cert-authority *.progress-linux.org ${KEY}
EOF

		mv -f /etc/ssh/ssh_known_hosts.tmp /etc/ssh/ssh_known_hosts
	fi
}

case "${1}" in
	configure)
		. /usr/share/debconf/confmodule

		db_get progress-linux/archives
		ARCHIVES="${RET}" # multiselect w/ empty

		db_get progress-linux/archive-areas
		ARCHIVE_AREAS="${RET:-main}" # string w/o empty

		db_stop

		if [ -n "${ARCHIVES}" ]
		then
			Install_apt
		else
			Remove_apt
		fi

		ARCHIVES="$(echo ${ARCHIVES} | sed -e 's|, | |g')"
		ARCHIVE_AREAS="$(echo ${ARCHIVE_AREAS} | sed -e 's|, | |g')"

		for ARCHIVE in ${ARCHIVES}
		do
			Configure_apt ${ARCHIVE}
		done

		Configure_ssh
		;;

	abort-upgrade|abort-remove|abort-deconfigure)

		;;

	*)
		echo "postinst called with unknown argument \`${1}'" >&2
		exit 1
		;;
esac

#DEBHELPER#

exit 0