#!/bin/sh
#
# Copyright (C) 2015, 2017  Etersoft
# Copyright (C) 2015, 2017  Vitaly Lipatov <lav@etersoft.ru>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#

__epm_orphan_altrpm()
{
	docmd "apt-cache list-extras"
}

epm_autoorphans()
{

[ -z "$pkg_filenames" ] || fatal "No arguments are allowed here"


case $PMTYPE in
	apt-rpm)
		# ALT Linux only
		assure_exists /etc/buildreqs/files/ignore.d/apt-scripts apt-scripts
		if [ -z "$dryrun" ] ; then
			echo "We will try remove all installed packages which are missed in repositories"
			warning "Use with caution!"
		fi
		local PKGLIST=$(__epm_orphan_altrpm \
			| sed -e "s/\.32bit//g" \
			| grep -v -- "^eepm$" \
			| grep -v -- "^kernel")

		if [ -n "$quiet" ] ; then
			echo "$PKGLIST"
		else
			docmd epm remove $dryrun $PKGLIST
		fi
		;;
	apt-dpkg|aptitude-dpkg)
		assure_exists deborphan
		showcmd deborphan
		a='' deborphan | docmd epm remove $dryrun
		;;
	#aura)
	#	sudocmd aura -Oj
	#	;;
	yum-rpm)
		docmd epm upgrade
		assure_exists package-cleanup yum-utils
		showcmd package-cleanup --orphans
		local PKGLIST=$(package-cleanup -q --orphans | grep -v "^eepm-")
		docmd epm remove $dryrun $PKGLIST
		;;
	dnf-rpm)
		# TODO: dnf list extras
		docmd epm upgrade
		assure_exists package-cleanup dnf-utils
		showcmd package-cleanup --orphans
		local PKGLIST=$(package-cleanup -q --orphans | grep -v "^eepm-")
		docmd epm remove $dryrun $PKGLIST
		;;
	urpm-rpm)
		if [ -n "$dryrun" ] ; then
			fatal "--dry-run is not supported yet"
		else
			showcmd urpme --report-orphans
			sudocmd urpme --auto-orphans
		fi
		;;
	#emerge)
	#	sudocmd emerge --depclean
	#	assure_exists revdep-rebuild
	#	sudocmd revdep-rebuild
	#	;;
	pacman)
		if [ -n "$dryrun" ] ; then
			info "Autoorphans packages list:"
			sudocmd pacman -Qdtq
		else
			sudocmd pacman -Qdtq | sudocmd pacman -Rs -
		fi
		;;
	slackpkg)
		# clean-system removes non official packages
		sudocmd slackpkg clean-system
		;;
	#guix)
	#	sudocmd guix gc
	#	;;
	#pkgng)
	#	sudocmd pkg autoremove
	#	;;
	zypper-rpm)
		# https://www.linux.org.ru/forum/desktop/11931830
		assure_exists zypper zypper 1.9.2
		# For zypper < 1.9.2: zypper se -si | grep 'System Packages'
		sudocmd zypper packages --orphaned
		# FIXME: x86_64/i586 are duplicated
		local PKGLIST=$(zypper packages --orphaned | tail -n +5 | cut -d \| -f 3 | sort -u)
		docmd epm remove $dryrun --clean-deps $PKGLIST
		;;
	xbps)
		if [ -n "$dryrun" ] ; then
			fatal "--dry-run is not supported yet"
		else
			sudocmd xbps-remove -o
		fi
		;;
	*)
		fatal "Have no suitable command for $PMTYPE"
		;;
esac

}