# -*- encoding: utf8 -*-
#
# The Qubes OS Project, http://www.qubes-os.org
#
# Copyright (C) 2017 Marek Marczykowski-Górecki
#                               <marmarek@invisiblethingslab.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with this program; if not, see <http://www.gnu.org/licenses/>.

import io
import unittest.mock

import subprocess
import sys

import qubesadmin.tests
import qubesadmin.tools.qvm_run


class TC_00_qvm_run(qubesadmin.tests.QubesTestCase):
    def setUp(self):
        if sys.stdout is not sys.__stdout__ or \
                sys.stderr is not sys.__stderr__:
            self.skipTest('qvm-run change behavior on redirected stdout/stderr')
        super(TC_00_qvm_run, self).setUp()
    def test_000_run_single(self):
        self.app.expected_calls[
            ('dom0', 'admin.vm.List', None, None)] = \
            b'0\x00test-vm class=AppVM state=Running\n'
        # self.app.expected_calls[
        #     ('test-vm', 'admin.vm.List', None, None)] = \
        #     b'0\x00test-vm class=AppVM state=Running\n'
        ret = qubesadmin.tools.qvm_run.main(['test-vm', 'command'], app=self.app)
        self.assertEqual(ret, 0)
        # make sure we have the same instance below
        null = self.app.service_calls[0][2]['stdout']
        self.assertIsInstance(null, io.BufferedWriter)
        self.assertEqual(self.app.service_calls, [
            ('test-vm', 'qubes.VMShell', {
                'filter_esc': True,
                'localcmd': None,
                'stdout': null,
                'stderr': null,
                'user': None,
            }),
            ('test-vm', 'qubes.VMShell', b'command\n')
        ])
        self.assertAllCalled()

    def test_001_run_multiple(self):
        self.app.expected_calls[
            ('dom0', 'admin.vm.List', None, None)] = \
            b'0\x00test-vm class=AppVM state=Running\n' \
            b'test-vm2 class=AppVM state=Running\n'
        # self.app.expected_calls[
        #     ('test-vm', 'admin.vm.List', None, None)] = \
        #     b'0\x00test-vm class=AppVM state=Running\n'
        ret = qubesadmin.tools.qvm_run.main(['test-vm', 'test-vm2', 'command'],
            app=self.app)
        self.assertEqual(ret, 0)
        for i in range(0, len(self.app.service_calls), 2):
            self.assertIsInstance(self.app.service_calls[i][2]['stdout'],
                io.BufferedWriter)
            self.assertIsInstance(self.app.service_calls[i][2]['stderr'],
                io.BufferedWriter)
        # make sure we have the same instance below
        null = self.app.service_calls[0][2]['stdout']
        null2 = self.app.service_calls[2][2]['stdout']
        self.assertEqual(self.app.service_calls, [
            ('test-vm', 'qubes.VMShell', {
                'filter_esc': True,
                'localcmd': None,
                'stdout': null,
                'stderr': null,
                'user': None,
            }),
            ('test-vm', 'qubes.VMShell', b'command\n'),
            ('test-vm2', 'qubes.VMShell', {
                'filter_esc': True,
                'localcmd': None,
                'stdout': null2,
                'stderr': null2,
                'user': None,
            }),
            ('test-vm2', 'qubes.VMShell', b'command\n')
        ])
        self.assertAllCalled()

    def test_002_passio(self):
        self.app.expected_calls[
            ('dom0', 'admin.vm.List', None, None)] = \
            b'0\x00test-vm class=AppVM state=Running\n'
        # self.app.expected_calls[
        #     ('test-vm', 'admin.vm.List', None, None)] = \
        #     b'0\x00test-vm class=AppVM state=Running\n'
        echo = subprocess.Popen(['echo', 'some-data'], stdout=subprocess.PIPE)
        with unittest.mock.patch('sys.stdin', echo.stdout):
            ret = qubesadmin.tools.qvm_run.main(
                ['--pass-io', 'test-vm', 'command'],
                app=self.app)

        self.assertEqual(ret, 0)
        self.assertEqual(self.app.service_calls, [
            ('test-vm', 'qubes.VMShell', {
                'filter_esc': True,
                'localcmd': None,
                'stdout': None,
                'stderr': None,
                'user': None,
            }),
            ('test-vm', 'qubes.VMShell', b'command\nsome-data\n')
        ])
        self.assertAllCalled()

    def test_002_color_output(self):
        self.app.expected_calls[
            ('dom0', 'admin.vm.List', None, None)] = \
            b'0\x00test-vm class=AppVM state=Running\n'
        # self.app.expected_calls[
        #     ('test-vm', 'admin.vm.List', None, None)] = \
        #     b'0\x00test-vm class=AppVM state=Running\n'
        stdout = io.StringIO()
        echo = subprocess.Popen(['echo', 'some-data'], stdout=subprocess.PIPE)
        with unittest.mock.patch('sys.stdin', echo.stdout):
            with unittest.mock.patch('sys.stdout', stdout):
                ret = qubesadmin.tools.qvm_run.main(
                    ['--pass-io', 'test-vm', 'command'],
                    app=self.app)

        self.assertEqual(ret, 0)
        self.assertEqual(self.app.service_calls, [
            ('test-vm', 'qubes.VMShell', {
                'filter_esc': True,
                'localcmd': None,
                'stdout': None,
                'stderr': None,
                'user': None,
            }),
            ('test-vm', 'qubes.VMShell', b'command\nsome-data\n')
        ])
        self.assertEqual(stdout.getvalue(), '\033[0;31m\033[0m')
        stdout.close()
        self.assertAllCalled()

    def test_003_no_color_output(self):
        self.app.expected_calls[
            ('dom0', 'admin.vm.List', None, None)] = \
            b'0\x00test-vm class=AppVM state=Running\n'
        # self.app.expected_calls[
        #     ('test-vm', 'admin.vm.List', None, None)] = \
        #     b'0\x00test-vm class=AppVM state=Running\n'
        stdout = io.StringIO()
        echo = subprocess.Popen(['echo', 'some-data'], stdout=subprocess.PIPE)
        with unittest.mock.patch('sys.stdin', echo.stdout):
            with unittest.mock.patch('sys.stdout', stdout):
                ret = qubesadmin.tools.qvm_run.main(
                    ['--pass-io', '--no-color-output', 'test-vm', 'command'],
                    app=self.app)

        self.assertEqual(ret, 0)
        self.assertEqual(self.app.service_calls, [
            ('test-vm', 'qubes.VMShell', {
                'filter_esc': True,
                'localcmd': None,
                'stdout': None,
                'stderr': None,
                'user': None,
            }),
            ('test-vm', 'qubes.VMShell', b'command\nsome-data\n')
        ])
        self.assertEqual(stdout.getvalue(), '')
        stdout.close()
        self.assertAllCalled()

    def test_004_no_filter_esc(self):
        self.app.expected_calls[
            ('dom0', 'admin.vm.List', None, None)] = \
            b'0\x00test-vm class=AppVM state=Running\n'
        # self.app.expected_calls[
        #     ('test-vm', 'admin.vm.List', None, None)] = \
        #     b'0\x00test-vm class=AppVM state=Running\n'
        stdout = io.StringIO()
        echo = subprocess.Popen(['echo', 'some-data'], stdout=subprocess.PIPE)
        with unittest.mock.patch('sys.stdin', echo.stdout):
            with unittest.mock.patch('sys.stdout', stdout):
                ret = qubesadmin.tools.qvm_run.main(
                    ['--pass-io', '--no-filter-esc', 'test-vm', 'command'],
                    app=self.app)

        self.assertEqual(ret, 0)
        self.assertEqual(self.app.service_calls, [
            ('test-vm', 'qubes.VMShell', {
                'filter_esc': False,
                'localcmd': None,
                'stdout': None,
                'stderr': None,
                'user': None,
            }),
            ('test-vm', 'qubes.VMShell', b'command\nsome-data\n')
        ])
        self.assertEqual(stdout.getvalue(), '')
        stdout.close()
        self.assertAllCalled()

    def test_005_localcmd(self):
        self.app.expected_calls[
            ('dom0', 'admin.vm.List', None, None)] = \
            b'0\x00test-vm class=AppVM state=Running\n'
        # self.app.expected_calls[
        #     ('test-vm', 'admin.vm.List', None, None)] = \
        #     b'0\x00test-vm class=AppVM state=Running\n'
        ret = qubesadmin.tools.qvm_run.main(
            ['--pass-io', '--localcmd', 'local-command',
                'test-vm', 'command'],
            app=self.app)
        self.assertEqual(ret, 0)
        self.assertEqual(self.app.service_calls, [
            ('test-vm', 'qubes.VMShell', {
                'filter_esc': True,
                'localcmd': 'local-command',
                'stdout': None,
                'stderr': None,
                'user': None,
            }),
            ('test-vm', 'qubes.VMShell', b'command\n')
        ])
        self.assertAllCalled()