"""Test service helpers."""
import asyncio
from collections import OrderedDict
from copy import deepcopy
import unittest
from unittest.mock import Mock, patch

import voluptuous as vol
import pytest

# To prevent circular import when running just this file
import homeassistant.components  # noqa: F401
from homeassistant import core as ha, exceptions
from homeassistant.const import STATE_ON, STATE_OFF, ATTR_ENTITY_ID
from homeassistant.setup import async_setup_component
import homeassistant.helpers.config_validation as cv
from homeassistant.auth.permissions import PolicyPermissions
from homeassistant.helpers import (
    service,
    template,
    device_registry as dev_reg,
    entity_registry as ent_reg,
)
from tests.common import (
    get_test_home_assistant,
    mock_service,
    mock_coro,
    mock_registry,
    mock_device_registry,
)


@pytest.fixture
def mock_service_platform_call():
    """Mock service platform call."""
    with patch(
        "homeassistant.helpers.service._handle_service_platform_call",
        side_effect=lambda *args: mock_coro(),
    ) as mock_call:
        yield mock_call


@pytest.fixture
def mock_entities():
    """Return mock entities in an ordered dict."""
    kitchen = Mock(
        entity_id="light.kitchen",
        available=True,
        should_poll=False,
        supported_features=1,
        platform="test_domain",
    )
    living_room = Mock(
        entity_id="light.living_room",
        available=True,
        should_poll=False,
        supported_features=0,
        platform="test_domain",
    )
    entities = OrderedDict()
    entities[kitchen.entity_id] = kitchen
    entities[living_room.entity_id] = living_room
    return entities


class TestServiceHelpers(unittest.TestCase):
    """Test the Home Assistant service helpers."""

    def setUp(self):  # pylint: disable=invalid-name
        """Set up things to be run when tests are started."""
        self.hass = get_test_home_assistant()
        self.calls = mock_service(self.hass, "test_domain", "test_service")

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

    def test_template_service_call(self):
        """Test service call with templating."""
        config = {
            "service_template": "{{ 'test_domain.test_service' }}",
            "entity_id": "hello.world",
            "data_template": {
                "hello": "{{ 'goodbye' }}",
                "data": {"value": "{{ 'complex' }}", "simple": "simple"},
                "list": ["{{ 'list' }}", "2"],
            },
        }

        service.call_from_config(self.hass, config)
        self.hass.block_till_done()

        assert "goodbye" == self.calls[0].data["hello"]
        assert "complex" == self.calls[0].data["data"]["value"]
        assert "simple" == self.calls[0].data["data"]["simple"]
        assert "list" == self.calls[0].data["list"][0]

    def test_passing_variables_to_templates(self):
        """Test passing variables to templates."""
        config = {
            "service_template": "{{ var_service }}",
            "entity_id": "hello.world",
            "data_template": {"hello": "{{ var_data }}"},
        }

        service.call_from_config(
            self.hass,
            config,
            variables={
                "var_service": "test_domain.test_service",
                "var_data": "goodbye",
            },
        )
        self.hass.block_till_done()

        assert "goodbye" == self.calls[0].data["hello"]

    def test_bad_template(self):
        """Test passing bad template."""
        config = {
            "service_template": "{{ var_service }}",
            "entity_id": "hello.world",
            "data_template": {"hello": "{{ states + unknown_var }}"},
        }

        service.call_from_config(
            self.hass,
            config,
            variables={
                "var_service": "test_domain.test_service",
                "var_data": "goodbye",
            },
        )
        self.hass.block_till_done()

        assert len(self.calls) == 0

    def test_split_entity_string(self):
        """Test splitting of entity string."""
        service.call_from_config(
            self.hass,
            {
                "service": "test_domain.test_service",
                "entity_id": "hello.world, sensor.beer",
            },
        )
        self.hass.block_till_done()
        assert ["hello.world", "sensor.beer"] == self.calls[-1].data.get("entity_id")

    def test_not_mutate_input(self):
        """Test for immutable input."""
        config = cv.SERVICE_SCHEMA(
            {
                "service": "test_domain.test_service",
                "entity_id": "hello.world, sensor.beer",
                "data": {"hello": 1},
                "data_template": {"nested": {"value": "{{ 1 + 1 }}"}},
            }
        )
        orig = deepcopy(config)

        # Only change after call is each template getting hass attached
        template.attach(self.hass, orig)

        service.call_from_config(self.hass, config, validate_config=False)
        assert orig == config

    @patch("homeassistant.helpers.service._LOGGER.error")
    def test_fail_silently_if_no_service(self, mock_log):
        """Test failing if service is missing."""
        service.call_from_config(self.hass, None)
        assert 1 == mock_log.call_count

        service.call_from_config(self.hass, {})
        assert 2 == mock_log.call_count

        service.call_from_config(self.hass, {"service": "invalid"})
        assert 3 == mock_log.call_count


async def test_extract_entity_ids(hass):
    """Test extract_entity_ids method."""
    hass.states.async_set("light.Bowl", STATE_ON)
    hass.states.async_set("light.Ceiling", STATE_OFF)
    hass.states.async_set("light.Kitchen", STATE_OFF)

    await hass.components.group.Group.async_create_group(
        hass, "test", ["light.Ceiling", "light.Kitchen"]
    )

    call = ha.ServiceCall("light", "turn_on", {ATTR_ENTITY_ID: "light.Bowl"})

    assert {"light.bowl"} == await service.async_extract_entity_ids(hass, call)

    call = ha.ServiceCall("light", "turn_on", {ATTR_ENTITY_ID: "group.test"})

    assert {"light.ceiling", "light.kitchen"} == await service.async_extract_entity_ids(
        hass, call
    )

    assert {"group.test"} == await service.async_extract_entity_ids(
        hass, call, expand_group=False
    )


async def test_extract_entity_ids_from_area(hass):
    """Test extract_entity_ids method with areas."""
    hass.states.async_set("light.Bowl", STATE_ON)
    hass.states.async_set("light.Ceiling", STATE_OFF)
    hass.states.async_set("light.Kitchen", STATE_OFF)

    device_in_area = dev_reg.DeviceEntry(area_id="test-area")
    device_no_area = dev_reg.DeviceEntry()
    device_diff_area = dev_reg.DeviceEntry(area_id="diff-area")

    mock_device_registry(
        hass,
        {
            device_in_area.id: device_in_area,
            device_no_area.id: device_no_area,
            device_diff_area.id: device_diff_area,
        },
    )

    entity_in_area = ent_reg.RegistryEntry(
        entity_id="light.in_area",
        unique_id="in-area-id",
        platform="test",
        device_id=device_in_area.id,
    )
    entity_no_area = ent_reg.RegistryEntry(
        entity_id="light.no_area",
        unique_id="no-area-id",
        platform="test",
        device_id=device_no_area.id,
    )
    entity_diff_area = ent_reg.RegistryEntry(
        entity_id="light.diff_area",
        unique_id="diff-area-id",
        platform="test",
        device_id=device_diff_area.id,
    )
    mock_registry(
        hass,
        {
            entity_in_area.entity_id: entity_in_area,
            entity_no_area.entity_id: entity_no_area,
            entity_diff_area.entity_id: entity_diff_area,
        },
    )

    call = ha.ServiceCall("light", "turn_on", {"area_id": "test-area"})

    assert {"light.in_area"} == await service.async_extract_entity_ids(hass, call)

    call = ha.ServiceCall("light", "turn_on", {"area_id": ["test-area", "diff-area"]})

    assert {
        "light.in_area",
        "light.diff_area",
    } == await service.async_extract_entity_ids(hass, call)


@asyncio.coroutine
def test_async_get_all_descriptions(hass):
    """Test async_get_all_descriptions."""
    group = hass.components.group
    group_config = {group.DOMAIN: {}}
    yield from async_setup_component(hass, group.DOMAIN, group_config)
    descriptions = yield from service.async_get_all_descriptions(hass)

    assert len(descriptions) == 1

    assert "description" in descriptions["group"]["reload"]
    assert "fields" in descriptions["group"]["reload"]

    logger = hass.components.logger
    logger_config = {logger.DOMAIN: {}}
    yield from async_setup_component(hass, logger.DOMAIN, logger_config)
    descriptions = yield from service.async_get_all_descriptions(hass)

    assert len(descriptions) == 2

    assert "description" in descriptions[logger.DOMAIN]["set_level"]
    assert "fields" in descriptions[logger.DOMAIN]["set_level"]


async def test_call_with_required_features(hass, mock_entities):
    """Test service calls invoked only if entity has required feautres."""
    test_service_mock = Mock(return_value=mock_coro())
    await service.entity_service_call(
        hass,
        [Mock(entities=mock_entities)],
        test_service_mock,
        ha.ServiceCall("test_domain", "test_service", {"entity_id": "all"}),
        required_features=[1],
    )
    assert len(mock_entities) == 2
    # Called once because only one of the entities had the required features
    assert test_service_mock.call_count == 1


async def test_call_context_user_not_exist(hass):
    """Check we don't allow deleted users to do things."""
    with pytest.raises(exceptions.UnknownUser) as err:
        await service.entity_service_call(
            hass,
            [],
            Mock(),
            ha.ServiceCall(
                "test_domain",
                "test_service",
                context=ha.Context(user_id="non-existing"),
            ),
        )

    assert err.value.context.user_id == "non-existing"


async def test_call_context_target_all(hass, mock_service_platform_call, mock_entities):
    """Check we only target allowed entities if targetting all."""
    with patch(
        "homeassistant.auth.AuthManager.async_get_user",
        return_value=mock_coro(
            Mock(
                permissions=PolicyPermissions(
                    {"entities": {"entity_ids": {"light.kitchen": True}}}, None
                )
            )
        ),
    ):
        await service.entity_service_call(
            hass,
            [Mock(entities=mock_entities)],
            Mock(),
            ha.ServiceCall(
                "test_domain", "test_service", context=ha.Context(user_id="mock-id")
            ),
        )

    assert len(mock_service_platform_call.mock_calls) == 1
    entities = mock_service_platform_call.mock_calls[0][1][2]
    assert entities == [mock_entities["light.kitchen"]]


async def test_call_context_target_specific(
    hass, mock_service_platform_call, mock_entities
):
    """Check targeting specific entities."""
    with patch(
        "homeassistant.auth.AuthManager.async_get_user",
        return_value=mock_coro(
            Mock(
                permissions=PolicyPermissions(
                    {"entities": {"entity_ids": {"light.kitchen": True}}}, None
                )
            )
        ),
    ):
        await service.entity_service_call(
            hass,
            [Mock(entities=mock_entities)],
            Mock(),
            ha.ServiceCall(