import os
import sys
from unittest.mock import MagicMock, patch

from django.core.exceptions import ImproperlyConfigured

from openslides.__main__ import (
    add_general_arguments,
    django_command_line_utility,
    start,
    syncdb)
from openslides.config.api import config
from openslides.utils.main import (
    get_browser_url,
    get_database_path_from_settings,
    get_default_settings_context,
    get_default_settings_path,
    get_default_user_data_path,
    get_port,
    PortIsBlockedError,
    setup_django_settings_module,
    start_browser,
    translate_customizable_strings,
    UNIX_VERSION,
    WINDOWS_PORTABLE_VERSION)
from openslides.utils.test import TestCase


class TestFunctions(TestCase):
    def test_get_default_user_data_path(self):
        self.assertIn(os.path.join('.local', 'share'), get_default_user_data_path(UNIX_VERSION))

    def test_get_default_settings_path(self):
        self.assertIn(
            os.path.join('.config', 'openslides', 'settings.py'), get_default_settings_path(UNIX_VERSION))

    @patch('openslides.utils.main.detect_openslides_type')
    def test_get_default_settings_context_portable(self, detect_mock):
        detect_mock.return_value = WINDOWS_PORTABLE_VERSION
        context = get_default_settings_context()
        self.assertEqual(context['openslides_user_data_path'], 'get_win32_portable_user_data_path()')

    def test_setup_django_settings_module(self):
        setup_django_settings_module('test_dir_dhvnghfjdh456fzheg2f/test_path_bngjdhc756dzwncshdfnx.py')
        self.assertEqual(os.environ['DJANGO_SETTINGS_MODULE'], 'test_path_bngjdhc756dzwncshdfnx')
        self.assertEqual(sys.path[0], 'test_dir_dhvnghfjdh456fzheg2f')

    def test_setup_django_settings_module_error(self):
        self.assertRaisesMessage(
            ImproperlyConfigured,
            "'.' is not an allowed character in the settings-file",
            setup_django_settings_module,
            'wrong.file.py')

    def test_get_browser_url(self):
        self.assertEqual(get_browser_url('123.456.789.365', 6789), 'http://123.456.789.365:6789')
        self.assertEqual(get_browser_url('123.456.789.365', 80), 'http://123.456.789.365')
        self.assertEqual(get_browser_url('0.0.0.0', 6789), 'http://localhost:6789')
        self.assertEqual(get_browser_url('0.0.0.0', 80), 'http://localhost')

    def test_get_port(self):
        class MyException(Exception):
            pass

        def block_some_ports(mock):
            if not 8000 == mock_socket.socket().bind.call_args[0][0][1]:
                raise MyException

        # Test open port
        self.assertEqual(get_port('localhost', 8234), 8234)
        # Test blocked ports
        with patch('openslides.utils.main.socket') as mock_socket:
            mock_socket.error = MyException
            mock_socket.socket().listen = MagicMock(side_effect=block_some_ports)
            self.assertEqual(get_port('localhost', 80), 8000)
            self.assertRaises(PortIsBlockedError, get_port, 'localhost', 81)

    @patch('openslides.utils.main.threading.Thread')
    @patch('openslides.utils.main.time')
    @patch('openslides.utils.main.webbrowser')
    def test_start_browser(self,  mock_webbrowser, mock_time, mock_Thread):
        browser_mock = MagicMock()
        mock_webbrowser.get.return_value = browser_mock
        start_browser('http://localhost:8234')
        self.assertTrue(mock_Thread.called)
        inner_function = mock_Thread.call_args[1]['target']
        inner_function()
        browser_mock.open.assert_called_with('http://localhost:8234')

    def test_get_database_path_from_settings_memory(self):
        self.assertEqual(get_database_path_from_settings(), ':memory:')

    def test_translate_customizable_strings(self):
        self.assertEqual(config['event_description'], 'Presentation and assembly system')
        translate_customizable_strings('de')
        self.assertEqual(config['event_description'], u'Präsentations- und Versammlungssystem')


class TestOtherFunctions(TestCase):
    """
    Tests functions in openslides.__main__
    """
    def test_add_general_arguments_wrong_arg(self):
        self.assertRaisesMessage(
            TypeError,
            'The argument invalid_argument is not a valid general argument.',
            add_general_arguments,
            None,
            ['invalid_argument'])

    @patch('openslides.__main__.syncdb')
    @patch('openslides.__main__.runserver')
    def test_start(self, mock_runserver, mock_syncdb):
        mock_args = MagicMock()
        start(settings=None, args=mock_args)
        self.assertTrue(mock_syncdb.called)
        mock_runserver.assert_called_with(None, mock_args)

    @patch('openslides.__main__.os.path.exists')
    @patch('openslides.__main__.os.makedirs')
    @patch('openslides.__main__.execute_from_command_line')
    def test_syncdb(self, mock_execute_from_command_line, mock_os, mock_exists):
        mock_exists.return_value = True
        mock_args = MagicMock()
        mock_args.language = None
        syncdb(settings=None, args=mock_args)
        self.assertTrue(mock_execute_from_command_line.called)

    @patch('openslides.__main__.execute_from_command_line')
    def test_django_command_line_utility(self, mock_execute_from_command_line):
        mock_args = MagicMock()
        django_command_line_utility(settings=None, args=mock_args)
        self.assertTrue(mock_execute_from_command_line.called)