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#-*- coding: utf-8 -*-
# dnf.py
# Module to work with DNF package manager class
#
# Copyright (C) 2016 Jakub Kadlcik
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# the GNU General Public License v.2, or (at your option) any later version.
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY expressed or implied, including the implied warranties of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
# Public License for more details.  You should have received a copy of the
# GNU General Public License along with this program; if not, write to the
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
#

from __future__ import absolute_import

import os.path

from tracer.resources.system import System
if System.distribution() in ["rhel", "fedora", "centos", "centos-7", "mageia", "suse", "ol"]:

	import subprocess
	from tracer.packageManagers.rpm import Rpm

	class Dnf(Rpm):

		def __init__(self, **kwargs):
			super(Dnf, self).__init__(**kwargs)
			if os.path.exists('/usr/lib/sysimage/dnf/history.sqlite'):
				self.opts['sysimage_persistdir'] = True
			if os.path.exists('/usr/lib/sysimage/dnf/history.sqlite') or os.path.exists('/var/lib/dnf/history.sqlite'):
				self.opts['modern_swdb'] = True

		@property
		def history_path(self):
			if self.opts.get('modern_swdb'):
				if self.opts.get('sysimage_persistdir'):
					return '/usr/lib/sysimage/dnf/history.sqlite'
				else:
					return '/var/lib/dnf/history.sqlite'
			if self.opts.get('sysimage_persistdir'):
				return '/usr/lib/sysimage/dnf/history/'
			else:
				return '/var/lib/dnf/history/'

		def package_files(self, pkg_name):
			if not self.opts.get("erased"):
				return super(Dnf, self).package_files(pkg_name)

			# TODO Running an external command is tooooo slow, use python API instead
			process = subprocess.Popen(["dnf", "repoquery", "-q", "-l", pkg_name], stdout=subprocess.PIPE)
			out = process.communicate()[0]
			return out.decode().split("\n")