"""The tests for the Group components."""
# pylint: disable=protected-access,too-many-public-methods
from collections import OrderedDict
import unittest
from unittest.mock import patch

from homeassistant.bootstrap import _setup_component
from homeassistant.const import (
    STATE_ON, STATE_OFF, STATE_HOME, STATE_UNKNOWN, ATTR_ICON, ATTR_HIDDEN,
    ATTR_ASSUMED_STATE, STATE_NOT_HOME, )
import homeassistant.components.group as group

from tests.common import get_test_home_assistant


class TestComponentsGroup(unittest.TestCase):
    """Test Group component."""

    def setUp(self):  # pylint: disable=invalid-name
        """Setup things to be run when tests are started."""
        self.hass = get_test_home_assistant()

    def tearDown(self):  # pylint: disable=invalid-name
        """Stop everything that was started."""
        self.hass.stop()

    def test_setup_group_with_mixed_groupable_states(self):
        """Try to setup a group with mixed groupable states."""
        self.hass.states.set('light.Bowl', STATE_ON)
        self.hass.states.set('device_tracker.Paulus', STATE_HOME)
        group.Group(
            self.hass, 'person_and_light',
            ['light.Bowl', 'device_tracker.Paulus'])

        self.assertEqual(
            STATE_ON,
            self.hass.states.get(
                group.ENTITY_ID_FORMAT.format('person_and_light')).state)

    def test_setup_group_with_a_non_existing_state(self):
        """Try to setup a group with a non existing state."""
        self.hass.states.set('light.Bowl', STATE_ON)

        grp = group.Group(
            self.hass, 'light_and_nothing',
            ['light.Bowl', 'non.existing'])

        self.assertEqual(STATE_ON, grp.state)

    def test_setup_group_with_non_groupable_states(self):
        """Test setup with groups which are not groupable."""
        self.hass.states.set('cast.living_room', "Plex")
        self.hass.states.set('cast.bedroom', "Netflix")

        grp = group.Group(
            self.hass, 'chromecasts',
            ['cast.living_room', 'cast.bedroom'])

        self.assertEqual(STATE_UNKNOWN, grp.state)

    def test_setup_empty_group(self):
        """Try to setup an empty group."""
        grp = group.Group(self.hass, 'nothing', [])

        self.assertEqual(STATE_UNKNOWN, grp.state)

    def test_monitor_group(self):
        """Test if the group keeps track of states."""
        self.hass.states.set('light.Bowl', STATE_ON)
        self.hass.states.set('light.Ceiling', STATE_OFF)
        test_group = group.Group(
            self.hass, 'init_group', ['light.Bowl', 'light.Ceiling'], False)

        # Test if group setup in our init mode is ok
        self.assertIn(test_group.entity_id, self.hass.states.entity_ids())

        group_state = self.hass.states.get(test_group.entity_id)
        self.assertEqual(STATE_ON, group_state.state)
        self.assertTrue(group_state.attributes.get(group.ATTR_AUTO))

    def test_group_turns_off_if_all_off(self):
        """Test if turn off if the last device that was on turns off."""
        self.hass.states.set('light.Bowl', STATE_OFF)
        self.hass.states.set('light.Ceiling', STATE_OFF)
        test_group = group.Group(
            self.hass, 'init_group', ['light.Bowl', 'light.Ceiling'], False)

        self.hass.block_till_done()

        group_state = self.hass.states.get(test_group.entity_id)
        self.assertEqual(STATE_OFF, group_state.state)

    def test_group_turns_on_if_all_are_off_and_one_turns_on(self):
        """Test if turn on if all devices were turned off and one turns on."""
        self.hass.states.set('light.Bowl', STATE_OFF)
        self.hass.states.set('light.Ceiling', STATE_OFF)
        test_group = group.Group(
            self.hass, 'init_group', ['light.Bowl', 'light.Ceiling'], False)

        # Turn one on
        self.hass.states.set('light.Ceiling', STATE_ON)
        self.hass.block_till_done()

        group_state = self.hass.states.get(test_group.entity_id)
        self.assertEqual(STATE_ON, group_state.state)

    def test_is_on(self):
        """Test is_on method."""
        self.hass.states.set('light.Bowl', STATE_ON)
        self.hass.states.set('light.Ceiling', STATE_OFF)
        test_group = group.Group(
            self.hass, 'init_group', ['light.Bowl', 'light.Ceiling'], False)

        self.assertTrue(group.is_on(self.hass, test_group.entity_id))
        self.hass.states.set('light.Bowl', STATE_OFF)
        self.hass.block_till_done()
        self.assertFalse(group.is_on(self.hass, test_group.entity_id))

        # Try on non existing state
        self.assertFalse(group.is_on(self.hass, 'non.existing'))

    def test_expand_entity_ids(self):
        """Test expand_entity_ids method."""
        self.hass.states.set('light.Bowl', STATE_ON)
        self.hass.states.set('light.Ceiling', STATE_OFF)
        test_group = group.Group(
            self.hass, 'init_group', ['light.Bowl', 'light.Ceiling'], False)

        self.assertEqual(sorted(['light.ceiling', 'light.bowl']),
                         sorted(group.expand_entity_ids(
                             self.hass, [test_group.entity_id])))

    def test_expand_entity_ids_does_not_return_duplicates(self):
        """Test that expand_entity_ids does not return duplicates."""
        self.hass.states.set('light.Bowl', STATE_ON)
        self.hass.states.set('light.Ceiling', STATE_OFF)
        test_group = group.Group(
            self.hass, 'init_group', ['light.Bowl', 'light.Ceiling'], False)

        self.assertEqual(
            ['light.bowl', 'light.ceiling'],
            sorted(group.expand_entity_ids(
                self.hass, [test_group.entity_id, 'light.Ceiling'])))

        self.assertEqual(
            ['light.bowl', 'light.ceiling'],
            sorted(group.expand_entity_ids(
                self.hass, ['light.bowl', test_group.entity_id])))

    def test_expand_entity_ids_ignores_non_strings(self):
        """Test that non string elements in lists are ignored."""
        self.assertEqual([], group.expand_entity_ids(self.hass, [5, True]))

    def test_get_entity_ids(self):
        """Test get_entity_ids method."""
        self.hass.states.set('light.Bowl', STATE_ON)
        self.hass.states.set('light.Ceiling', STATE_OFF)
        test_group = group.Group(
            self.hass, 'init_group', ['light.Bowl', 'light.Ceiling'], False)

        self.assertEqual(
            ['light.bowl', 'light.ceiling'],
            sorted(group.get_entity_ids(self.hass, test_group.entity_id)))

    def test_get_entity_ids_with_domain_filter(self):
        """Test if get_entity_ids works with a domain_filter."""
        self.hass.states.set('switch.AC', STATE_OFF)

        mixed_group = group.Group(
            self.hass, 'mixed_group', ['light.Bowl', 'switch.AC'], False)

        self.assertEqual(
            ['switch.ac'],
            group.get_entity_ids(
                self.hass, mixed_group.entity_id, domain_filter="switch"))

    def test_get_entity_ids_with_non_existing_group_name(self):
        """Test get_entity_ids with a non existing group."""
        self.assertEqual([], group.get_entity_ids(self.hass, 'non_existing'))

    def test_get_entity_ids_with_non_group_state(self):
        """Test get_entity_ids with a non group state."""
        self.assertEqual([], group.get_entity_ids(self.hass, 'switch.AC'))

    def test_group_being_init_before_first_tracked_state_is_set_to_on(self):
        """Test if the groups turn on.

        If no states existed and now a state it is tracking is being added
        as ON.
        """
        test_group = group.Group(
            self.hass, 'test group', ['light.not_there_1'])

        self.hass.states.set('light.not_there_1', STATE_ON)

        self.hass.block_till_done()

        group_state = self.hass.states.get(test_group.entity_id)
        self.assertEqual(STATE_ON, group_state.state)

    def test_group_being_init_before_first_tracked_state_is_set_to_off(self):
        """Test if the group turns off.

        If no states existed and now a state it is tracking is being added
        as OFF.
        """
        test_group = group.Group(
            self.hass, 'test group', ['light.not_there_1'])

        self.hass.states.set('light.not_there_1', STATE_OFF)

        self.hass.block_till_done()

        group_state = self.hass.states.get(test_group.entity_id)
        self.assertEqual(STATE_OFF, group_state.state)

    def test_setup(self):
        """Test setup method."""
        self.hass.states.set('light.Bowl', STATE_ON)
        self.hass.states.set('light.Ceiling', STATE_OFF)
        test_group = group.Group(
            self.hass, 'init_group', ['light.Bowl', 'light.Ceiling'], False)

        group_conf = OrderedDict()
        group_conf['second_group'] = {
                        'entities': 'light.Bowl, ' + test_group.entity_id,
                        'icon': 'mdi:work',
                        'view': True,
                    }
        group_conf['test_group'] = 'hello.world,sensor.happy'
        group_conf['empty_group'] = {'name': 'Empty Group', 'entities': None}

        _setup_component(self.hass, 'group', {'group': group_conf})

        group_state = self.hass.states.get(
            group.ENTITY_ID_FORMAT.format('second_group'))
        self.assertEqual(STATE_ON, group_state.state)
        self.assertEqual(set((test_group.entity_id, 'light.bowl')),
                         set(group_state.attributes['entity_id']))
        self.assertIsNone(group_state.attributes.get(group.ATTR_AUTO))
        self.assertEqual('mdi:work',
                         group_state.attributes.get(ATTR_ICON))
        self.assertTrue(group_state.attributes.get(group.ATTR_VIEW))
        self.assertTrue(group_state.attributes.get(ATTR_HIDDEN))
        self.assertEqual(1, group_state.attributes.get(group.ATTR_ORDER))

        group_state = self.hass.states.get(
            group.ENTITY_ID_FORMAT.format('test_group'))
        self.assertEqual(STATE_UNKNOWN, group_state.state)
        self.assertEqual(set(('sensor.happy', 'hello.world')),
                         set(group_state.attributes['entity_id']))
        self.assertIsNone(group_state.attributes.get(group.ATTR_AUTO))
        self.assertIsNone(group_state.attributes.get(ATTR_ICON))
        self.assertIsNone(group_state.attributes.get(group.ATTR_VIEW))
        self.assertIsNone(group_state.attributes.get(ATTR_HIDDEN))
        self.assertEqual(2, group_state.attributes.get(group.ATTR_ORDER))

    def test_groups_get_unique_names(self):
        """Two groups with same name should both have a unique entity id."""
        grp1 = group.Group(self.hass, 'Je suis Charlie')
        grp2 = group.Group(self.hass, 'Je suis Charlie')

        self.assertNotEqual(grp1.entity_id, grp2.entity_id)

    def test_expand_entity_ids_expands_nested_groups(self):
        """Test if entity ids epands to nested groups."""
        group.Group(self.hass, 'light', ['light.test_1', 'light.test_2'])
        group.Group(self.hass, 'switch', ['switch.test_1', 'switch.test_2'])
        group.Group(self.hass, 'group_of_groups', ['group.light',
                                                   'group.switch'])

        self.assertEqual(
            ['light.test_1', 'light.test_2', 'switch.test_1', 'switch.test_2'],
            sorted(group.expand_entity_ids(self.hass,
                                           ['group.group_of_groups'])))

    def test_set_assumed_state_based_on_tracked(self):
        """Test assumed state."""
        self.hass.states.set('light.Bowl', STATE_ON)
        self.hass.states.set('light.Ceiling', STATE_OFF)
        test_group = group.Group(
            self.hass, 'init_group',
            ['light.Bowl', 'light.Ceiling', 'sensor.no_exist'])

        state = self.hass.states.get(test_group.entity_id)
        self.assertIsNone(state.attributes.get(ATTR_ASSUMED_STATE))

        self.hass.states.set('light.Bowl', STATE_ON, {
            ATTR_ASSUMED_STATE: True
        })
        self.hass.block_till_done()

        state = self.hass.states.get(test_group.entity_id)
        self.assertTrue(state.attributes.get(ATTR_ASSUMED_STATE))

        self.hass.states.set('light.Bowl', STATE_ON)
        self.hass.block_till_done()

        state = self.hass.states.get(test_group.entity_id)
        self.assertIsNone(state.attributes.get(ATTR_ASSUMED_STATE))

    def test_group_updated_after_device_tracker_zone_change(self):
        """Test group state when device tracker in group changes zone."""
        self.hass.states.set('device_tracker.Adam', STATE_HOME)
        self.hass.states.set('device_tracker.Eve', STATE_NOT_HOME)
        self.hass.block_till_done()
        group.Group(
            self.hass, 'peeps',
            ['device_tracker.Adam', 'device_tracker.Eve'])
        self.hass.states.set('device_tracker.Adam', 'cool_state_not_home')
        self.hass.block_till_done()
        self.assertEqual(STATE_NOT_HOME,
                         self.hass.states.get(
                             group.ENTITY_ID_FORMAT.format('peeps')).state)

    def test_reloading_groups(self):
        """Test reloading the group config."""
        _setup_component(self.hass, 'group', {'group': {
                    'second_group': {
                        'entities': 'light.Bowl',
                        'icon': 'mdi:work',
                        'view': True,
                    },
                    'test_group': 'hello.world,sensor.happy',
                    'empty_group': {'name': 'Empty Group', 'entities': None},
                }
            })

        assert sorted(self.hass.states.entity_ids()) == \
            ['group.empty_group', 'group.second_group', 'group.test_group']
        assert self.hass.bus.listeners['state_changed'] == 3

        with patch('homeassistant.config.load_yaml_config_file', return_value={
                'group': {
                    'hello': {
                        'entities': 'light.Bowl',
                        'icon': 'mdi:work',
                        'view': True,
                    }}}):
            group.reload(self.hass)
            self.hass.block_till_done()

        assert self.hass.states.entity_ids() == ['group.hello']
        assert self.hass.bus.listeners['state_changed'] == 1