"""Tests for the wemo component."""
from datetime import timedelta
from unittest.mock import create_autospec, patch

import pywemo

from homeassistant.components.wemo import CONF_DISCOVERY, CONF_STATIC, WemoDiscovery
from homeassistant.components.wemo.const import DOMAIN
from homeassistant.helpers import entity_registry as er
from homeassistant.setup import async_setup_component
from homeassistant.util import dt

from .conftest import MOCK_HOST, MOCK_NAME, MOCK_PORT, MOCK_SERIAL_NUMBER

from tests.common import async_fire_time_changed


async def test_config_no_config(hass):
    """Component setup succeeds when there are no config entry for the domain."""
    assert await async_setup_component(hass, DOMAIN, {})


async def test_config_no_static(hass):
    """Component setup succeeds when there are no static config entries."""
    assert await async_setup_component(hass, DOMAIN, {DOMAIN: {CONF_DISCOVERY: False}})


async def test_static_duplicate_static_entry(hass, pywemo_device):
    """Duplicate static entries are merged into a single entity."""
    static_config_entry = f"{MOCK_HOST}:{MOCK_PORT}"
    assert await async_setup_component(
        hass,
        DOMAIN,
        {
            DOMAIN: {
                CONF_DISCOVERY: False,
                CONF_STATIC: [
                    static_config_entry,
                    static_config_entry,
                ],
            },
        },
    )
    await hass.async_block_till_done()
    entity_reg = er.async_get(hass)
    entity_entries = list(entity_reg.entities.values())
    assert len(entity_entries) == 1


async def test_static_config_with_port(hass, pywemo_device):
    """Static device with host and port is added and removed."""
    assert await async_setup_component(
        hass,
        DOMAIN,
        {
            DOMAIN: {
                CONF_DISCOVERY: False,
                CONF_STATIC: [f"{MOCK_HOST}:{MOCK_PORT}"],
            },
        },
    )
    await hass.async_block_till_done()
    entity_reg = er.async_get(hass)
    entity_entries = list(entity_reg.entities.values())
    assert len(entity_entries) == 1


async def test_static_config_without_port(hass, pywemo_device):
    """Static device with host and no port is added and removed."""
    assert await async_setup_component(
        hass,
        DOMAIN,
        {
            DOMAIN: {
                CONF_DISCOVERY: False,
                CONF_STATIC: [MOCK_HOST],
            },
        },
    )
    await hass.async_block_till_done()
    entity_reg = er.async_get(hass)
    entity_entries = list(entity_reg.entities.values())
    assert len(entity_entries) == 1


async def test_static_config_with_invalid_host(hass):
    """Component setup fails if a static host is invalid."""
    setup_success = await async_setup_component(
        hass,
        DOMAIN,
        {
            DOMAIN: {
                CONF_DISCOVERY: False,
                CONF_STATIC: [""],
            },
        },
    )
    assert not setup_success


async def test_discovery(hass, pywemo_registry):
    """Verify that discovery dispatches devices to the platform for setup."""

    def create_device(counter):
        """Create a unique mock Motion detector device for each counter value."""
        device = create_autospec(pywemo.Motion, instance=True)
        device.host = f"{MOCK_HOST}_{counter}"
        device.port = MOCK_PORT + counter
        device.name = f"{MOCK_NAME}_{counter}"
        device.serialnumber = f"{MOCK_SERIAL_NUMBER}_{counter}"
        device.model_name = "Motion"
        device.get_state.return_value = 0  # Default to Off
        device.supports_long_press.return_value = False
        return device

    pywemo_devices = [create_device(0), create_device(1)]
    # Setup the component and start discovery.
    with patch(
        "pywemo.discover_devices", return_value=pywemo_devices
    ) as mock_discovery:
        with patch(
            "homeassistant.components.wemo.WemoDiscovery.discover_statics"
        ) as mock_discover_statics:
            assert await async_setup_component(
                hass, DOMAIN, {DOMAIN: {CONF_DISCOVERY: True}}
            )
            await pywemo_registry.semaphore.acquire()  # Returns after platform setup.
            mock_discovery.assert_called()
            mock_discover_statics.assert_called()
            pywemo_devices.append(create_device(2))

            # Test that discovery runs periodically and the async_dispatcher_send code works.
            async_fire_time_changed(
                hass,
                dt.utcnow()
                + timedelta(seconds=WemoDiscovery.ADDITIONAL_SECONDS_BETWEEN_SCANS + 1),
            )
            await hass.async_block_till_done()
            # Test that discover_statics runs during discovery
            assert mock_discover_statics.call_count == 3

    # Verify that the expected number of devices were setup.
    entity_reg = er.async_get(hass)
    entity_entries = list(entity_reg.entities.values())
    assert len(entity_entries) == 3

    # Verify that hass stops cleanly.
    await hass.async_stop()
    await hass.async_block_till_done()