#!/bin/sh
#
# Copyright (C) 2009, 2012, 2013, 2014, 2016, 2018  Etersoft
# Copyright (C) 2009, 2012, 2013, 2014, 2016, 2018  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/>.
#

# changed since rpm 4.0.4
__rpm_allows_nosignature()
{
    a= rpm --help | grep -q -- "--nosignature"
}

check_pkg_integrity()
{
	local PKG="$1"
	local RET
	local NOSIGNATURE

	case $(get_package_type $PKG) in
	rpm)
		assure_exists rpm
		__rpm_allows_nosignature && NOSIGNATURE="--nosignature" || NOSIGNATURE="--nogpg"
		docmd rpm --checksig $NOSIGNATURE $PKG
		;;
	deb)
		assure_exists dpkg
		# FIXME: debsums -ca package ?
		docmd dpkg --contents $PKG >/dev/null && echo "Package $PKG is correct."
		;;
	exe)
		file $PKG | grep -q "executable for MS Windows"
		;;
	msi)
		# TODO: add to patool via cabextract
		assure_exists cabextract
		#file $PKG | grep -q "Microsoft Office Document"
		docmd cabextract -t $PKG
		;;
	ebuild)
		true
		;;
	*)
		assure_exists erc
		docmd erc test "$PKG" && return
		;;
	esac
}

__epm_check_installed_pkg()
{
case $PMTYPE in
	*-rpm)
		docmd rpm -V $@
		;;
	*-dpkg)
		assure_exists debsums
		docmd debsums $@
		;;
	emerge)
		assure_exists equery
		docmd equery check $@
		;;
	*)
		fatal "Have no suitable command for $PMTYPE"
		;;
esac

}


epm_checkpkg()
{
	if [ -n "$pkg_names" ] ; then
		# TODO: если есть / или расширение, это отсутствующий файл
		info "Suggest $pkg_names are name(s) of installed package(s)"
		__epm_check_installed_pkg $pkg_names
		return
	fi

	# if possible, it will put pkg_urls into pkg_files or pkg_names
	if [ -n "$pkg_urls" ] ; then
		load_helper epm-download
		__handle_pkg_urls_to_checking
	fi

	[ -n "$pkg_files" ] || fatal "Checkpkg: filename(s) is missed"

	local RETVAL=0

	local pkg
	for pkg in $pkg_files ; do
		check_pkg_integrity $pkg || RETVAL=1
	done

	# TODO: reinvent
	[ -n "$to_remove_pkg_files" ] && rm -fv $to_remove_pkg_files
	[ -n "$to_remove_pkg_files" ] && rmdir -v $(dirname $to_remove_pkg_files | head -n1) 2>/dev/null

	#fatal "Broken package $pkg"
	return $RETVAL
}