# vim: ts=4:sw=4:expandtab
# -*- coding: UTF-8 -*-

# BleachBit
# Copyright (C) 2008-2023 Andrew Ziem
# https://www.bleachbit.org
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


"""
Test case for module Unix
"""

from tests import common
from bleachbit.Unix import *

import mock
import os
import sys
import unittest


class UnixTestCase(common.BleachbitTestCase):

    """Test case for module Unix"""

    def setUp(self):
        """Initialize unit tests"""
        self.locales = Locales()
        super(UnixTestCase, self).setUp()

    @common.skipIfWindows
    def test_apt(self):
        """Unit test for method apt_autoclean() and apt_autoremove()"""
        if 0 != os.geteuid() or not FileUtilities.exe_exists('apt-get'):
            self.assertRaises(RuntimeError, apt_autoclean)
            self.assertRaises(RuntimeError, apt_autoremove)
        else:
            bytes_freed = apt_autoclean()
            self.assertIsInteger(bytes_freed)
            bytes_freed = apt_autoremove()
            self.assertIsInteger(bytes_freed)

    @unittest.skipUnless(FileUtilities.exe_exists('apt-get'),
                         'skipping tests for unavailable apt-get')
    def test_get_apt_size(self):
        """Unit test for method get_apt_size()"""
        size = get_apt_size()
        self.assertIsInteger(size)
        self.assertGreaterEqual(size, 0)

    @common.skipIfWindows
    def test_is_broken_xdg_desktop(self):
        """Unit test for is_broken_xdg_desktop()"""
        menu_dirs = ['/usr/share/applications',
                     '/usr/share/autostart',
                     '/usr/share/gnome/autostart',
                     '/usr/share/gnome/apps',
                     '/usr/share/mimelnk',
                     '/usr/share/applnk-redhat/',
                     '/usr/local/share/applications/']
        for dirname in menu_dirs:
            for filename in [fn for fn in FileUtilities.children_in_directory(dirname, False)
                             if fn.endswith('.desktop')]:
                self.assertIsInstance(is_broken_xdg_desktop(filename), bool)

    @common.skipIfWindows
    @mock.patch('subprocess.check_output')
    def test_is_running_darwin(self, mock_check_output):
        mock_check_output.return_value = """USER               PID  %CPU %MEM      VSZ    RSS   TT  STAT STARTED      TIME COMMAND
root               703   0.0  0.0  2471428   2792   ??  Ss   20May16   0:01.30 SubmitDiagInfo
alocaluseraccount   681   0.0  0.0  2471568    856   ??  S    20May16   0:00.81 DiskUnmountWatcher
alocaluseraccount   666   0.0  0.0  2507092   3488   ??  S    20May16   0:17.47 SpotlightNetHelper
root               665   0.0  0.0  2497508    512   ??  Ss   20May16   0:11.30 check_afp
alocaluseraccount   646   0.0  0.1  2502484   5656   ??  S    20May16   0:03.62 DataDetectorsDynamicData
alocaluseraccount   632   0.0  0.0  2471288    320   ??  S    20May16   0:02.79 mdflagwriter
alocaluseraccount   616   0.0  0.0  2497596    520   ??  S    20May16   0:00.41 familycircled
alocaluseraccount   573   0.0  0.0  3602328   2440   ??  S    20May16   0:39.64 storedownloadd
alocaluseraccount   572   0.0  0.0  2531184   3116   ??  S    20May16   0:02.93 LaterAgent
alocaluseraccount   561   0.0  0.0  2471492    584   ??  S    20May16   0:00.21 USBAgent
alocaluseraccount   535   0.0  0.0  2496656    524   ??  S    20May16   0:00.33 storelegacy
root               531   0.0  0.0  2501712    588   ??  Ss   20May16   0:02.40 suhelperd
"""
        self.assertTrue(is_running_darwin('USBAgent'))
        self.assertFalse(is_running_darwin('does-not-exist'))

        mock_check_output.return_value = 'invalid-input'
        self.assertRaises(RuntimeError, is_running_darwin, 'foo')

    @common.skipIfWindows
    def test_is_running(self):
        # Fedora 11 doesn't need realpath but Ubuntu 9.04 uses symlink
        # from /usr/bin/python to python2.6
        exe = os.path.basename(os.path.realpath(sys.executable))
        self.assertTrue(is_running(exe))
        self.assertFalse(is_running('does-not-exist'))

    @common.skipIfWindows
    def test_journald_clean(self):
        if not FileUtilities.exe_exists('journalctl'):
            self.assertRaises(RuntimeError, journald_clean)
        else:
            try:
                journald_clean()
            except RuntimeError as rte:
                # On my system as a regular user, this succeeds.
                # On Travis running Trusty, this worked.
                # On Travis running Xenial, there is a permissions error.
                if common.have_root():
                    raise rte

    def test_journald_regex(self):
        """Test the regex for journald_clean()"""
        positive_cases = ('Vacuuming done, freed 0B of archived journals on disk.',
                          'Vacuuming done, freed 1K of archived journals on disk.',
                          'Vacuuming done, freed 100.0M of archived journals on disk.',
                          'Vacuuming done, freed 1G of archived journals on disk.',
                          'Vacuuming done, freed 0B of archived journals from /run/log/journal.',
                          'Vacuuming done, freed 1.0G of archived journals from /var/log/journal/123abc.')
        regex = re.compile(JOURNALD_REGEX)
        for pos in positive_cases:
            self.assertTrue(regex.match(pos))
        negative_cases = ('Deleted archived journal /var/log/journal/123/system@123-123.journal~ (56.0M).',
                          'Archived and active journals take up 100.0M on disk.')
        for neg in negative_cases:
            self.assertFalse(regex.match(neg))

    def test_locale_regex(self):
        """Unit test for locale_to_language()"""
        tests = {'en': 'en',
                 'en_US': 'en',
                 'en_US@piglatin': 'en',
                 'en_US.utf8': 'en',
                 'ko_KR.eucKR': 'ko',
                 'pl.ISO8859-2': 'pl',
                 'zh_TW.Big5': 'zh'}
        import re
        regex = re.compile('^' + Locales.localepattern + '$')
        for locale, tlc in tests.items():
            m = regex.match(locale)
            self.assertIsNotNone(m, 'expected positive match for ' + locale)
            self.assertEqual(m.group("locale"), tlc)
        for test in ['default', 'C', 'English', 'ru_RU.txt', 'ru.txt']:
            self.assertIsNone(regex.match(
                test), 'expected negative match for ' + test)

    @common.skipIfWindows
    def test_localization_paths(self):
        """Unit test for localization_paths()"""
        from xml.dom.minidom import parseString
        configpath = parseString(
            '<path location="/usr/share/locale/" filter="*" />').firstChild
        locales.add_xml(configpath)
        counter = 0
        for path in locales.localization_paths(['en', 'en_AU', 'en_CA', 'en_GB']):
            self.assertLExists(path)
            # self.assertTrue(path.startswith('/usr/share/locale'))
            # /usr/share/locale/en_* should be ignored
            self.assertEqual(path.find('/en_'), -1)
            counter += 1
        self.assertGreater(counter, 0, 'Zero files deleted by localization cleaner. ' +
                                       'This may be an error unless you really deleted all the files.')

    @common.skipIfWindows
    def test_fakelocalizationdirs(self):
        """Create a faked localization hierarchy and clean it afterwards"""

        keepdirs = [
            'important_dontdelete',
            'important_dontdelete/ru',
            'delete',
            'delete/locale',
            'delete/locale/en',
            'delete/dummyfiles',
            'foobar',
            'foobar/locale']
        nukedirs = [
            'delete/locale/ru',
            'foobar/locale/ru']
        keepfiles = [
            'delete/dummyfiles/dontdeleteme_ru.txt',
            'important_dontdelete/exceptthisone_ru.txt',
            'delete/dummyfiles/en.txt',
            'delete/dummyfiles/ru.dic']
        nukefiles = [
            'delete/dummyfiles/ru.txt',
            'delete/locale/ru_RU.UTF8.txt']
        for path in keepdirs + nukedirs:
            os.mkdir(os.path.join(self.tempdir, path))
        for path in keepfiles + nukefiles:
            self.write_file(path)

        configxml = '<path directoryregex="^.*$">' \
                    '  <path directoryregex="^(locale|dummyfiles)$">' \
                    '    <path location="." filter="*" />' \
                    '    <regexfilter postfix="\.txt" />' \
                    '  </path>' \
                    '</path>'
        from xml.dom.minidom import parseString
        config = parseString(configxml)
        self.locales._paths = LocaleCleanerPath(self.tempdir)
        self.locales.add_xml(config.firstChild, None)
        # normpath because paths may contain ./
        deletelist = [os.path.normpath(
            path) for path in self.locales.localization_paths(['en', 'de'])]
        for path in keepdirs + keepfiles:
            self.assertNotIn(os.path.join(self.tempdir, path), deletelist)
        for path in nukedirs + nukefiles:
            self.assertIn(os.path.join(self.tempdir, path), deletelist)

    @common.skipIfWindows
    def test_rotated_logs(self):
        """Unit test for rotated_logs()"""
        for path in rotated_logs():
            self.assertLExists(
                path, "Rotated log path '%s' does not exist" % path)

    @common.skipIfWindows
    def test_run_cleaner_cmd(self):
        from subprocess import CalledProcessError
        self.assertRaises(RuntimeError, run_cleaner_cmd,
                          '/hopethisdoesntexist', [])
        self.assertRaises(CalledProcessError, run_cleaner_cmd,
                          'sh', ['-c', 'echo errormsg; false'])
        # test if regexes for invalid lines work
        self.assertRaises(RuntimeError, run_cleaner_cmd, 'echo', ['This is an invalid line'],
                          error_line_regexes=['invalid'])

        freed_space_regex = r'^Freed ([\d.]+[kMT]?B)'
        lines = ['Test line',
                 'Freed 100B on your hard drive',
                 'Freed 1.9kB, hooray!',
                 'Fred 12MB']
        freed_space = run_cleaner_cmd(
            'echo', ['\n'.join(lines)], freed_space_regex)
        self.assertEqual(freed_space, 2000)

    @common.skipIfWindows
    def test_wine_to_linux_path(self):
        """Unit test for wine_to_linux_path()"""
        wineprefix = "/home/foo/.wine"
        windows_pathname = "C:\\Program Files\\NSIS\\NSIS.exe"
        result = "/home/foo/.wine/drive_c/Program Files/NSIS/NSIS.exe"
        self.assertEqual(wine_to_linux_path(
            wineprefix, windows_pathname), result)

    @common.skipIfWindows
    def test_yum_clean(self):
        """Unit test for yum_clean()"""
        if 0 != os.geteuid() or os.path.exists('/var/run/yum.pid') \
                or not FileUtilities.exe_exists('yum'):
            self.assertRaises(RuntimeError, yum_clean)
        else:
            bytes_freed = yum_clean()
            self.assertIsInteger(bytes_freed)
            bleachbit.logger.debug('yum bytes cleaned %d', bytes_freed)

    @common.skipIfWindows
    def test_dnf_clean(self):
        """Unit test for dnf_clean()"""
        if 0 != os.geteuid() or os.path.exists('/var/run/dnf.pid') \
                or not FileUtilities.exe_exists('dnf'):
            self.assertRaises(RuntimeError, dnf_clean)
        else:
            bytes_freed = dnf_clean()
            self.assertIsInteger(bytes_freed)
            bleachbit.logger.debug('dnf bytes cleaned %d', bytes_freed)

    @common.skipIfWindows
    def test_dnf_autoremove_real(self):
        """Unit test for dnf_autoremove() with real dnf"""
        if 0 != os.geteuid() or os.path.exists('/var/run/dnf.pid') \
                or not FileUtilities.exe_exists('dnf'):
            self.assertRaises(RuntimeError, dnf_clean)
        else:
            bytes_freed = dnf_autoremove()
            self.assertIsInteger(bytes_freed)
            bleachbit.logger.debug('dnf bytes cleaned %d', bytes_freed)

    @common.skipIfWindows
    @mock.patch('bleachbit.Unix.os.path')
    @mock.patch('bleachbit.General.run_external')
    def test_dnf_autoremove_mock(self, mock_run, mock_path):
        """Unit test for dnf_autoremove() with mock"""
        mock_path.exists.return_value = True
        self.assertRaises(RuntimeError, dnf_autoremove)

        mock_path.exists.return_value = False
        mock_run.return_value = (1, 'stdout', 'stderr')
        self.assertRaises(RuntimeError, dnf_autoremove)

        mock_run.return_value = (0, 'Nothing to do.', 'stderr')
        bytes_freed = dnf_autoremove()
        self.assertEqual(bytes_freed, 0)

        mock_run.return_value = (
            0, 'Remove  112 Packages\nFreed space: 299 M\n', 'stderr')
        bytes_freed = dnf_autoremove()
        self.assertEqual(bytes_freed, 299000000)

    @common.skipIfWindows
    def test_is_linux_display_protocol_wayland(self):
        display_protocol = None
        def side_effect_func(value):
            if len(value) == 1:
                return (0, 'SESSION  UID USER   SEAT  TTY \n      2 1000 debian seat0 tty2\n\n1 sessions listed.\n', '')
            elif len(value) > 1:
                return (0, 'Type={}\n'.format(display_protocol), '')
            assert(False) # should never reach here

        for display_protocol, assert_method in [['wayland', self.assertTrue], ['donotexist', self.assertFalse]]:
            with mock.patch('bleachbit.General.run_external') as mock_run_external:
                mock_run_external.side_effect = side_effect_func
                is_wayland = is_linux_display_protocol_wayland()
            self.assertIsInstance(is_wayland, bool)
            assert_method(is_wayland)

    @common.skipIfWindows
    def test_xhost_autorized_root(self):
        error_code = None
        def side_effect_func(*args, **kwargs):
            self.assertEqual(args[0][0], 'xhost')
            return (error_code,
                    '',
                    '')

        for error_code, expected_root_autorized in [[1, True], [0, False]]:
            with mock.patch('bleachbit.General.run_external') as mock_run_external:
                mock_run_external.side_effect = side_effect_func
                root_autorized = root_is_not_allowed_to_X_session()
            self.assertIsInstance(root_autorized, bool)
            self.assertEqual(expected_root_autorized, root_autorized)
