"""The tests for the MQTT switch platform."""
import json
from unittest.mock import ANY

from asynctest import patch
import pytest

from homeassistant.components import mqtt, switch
from homeassistant.components.mqtt.discovery import async_start
from homeassistant.const import (
    ATTR_ASSUMED_STATE,
    STATE_OFF,
    STATE_ON,
    STATE_UNAVAILABLE,
)
import homeassistant.core as ha
from homeassistant.setup import async_setup_component

from tests.common import (
    MockConfigEntry,
    async_fire_mqtt_message,
    async_mock_mqtt_component,
    mock_coro,
    mock_registry,
)
from tests.components.switch import common


@pytest.fixture
def mock_publish(hass):
    """Initialize components."""
    yield hass.loop.run_until_complete(async_mock_mqtt_component(hass))


async def test_controlling_state_via_topic(hass, mock_publish):
    """Test the controlling state via topic."""
    assert await async_setup_component(
        hass,
        switch.DOMAIN,
        {
            switch.DOMAIN: {
                "platform": "mqtt",
                "name": "test",
                "state_topic": "state-topic",
                "command_topic": "command-topic",
                "payload_on": 1,
                "payload_off": 0,
            }
        },
    )

    state = hass.states.get("switch.test")
    assert state.state == STATE_OFF
    assert not state.attributes.get(ATTR_ASSUMED_STATE)

    async_fire_mqtt_message(hass, "state-topic", "1")

    state = hass.states.get("switch.test")
    assert state.state == STATE_ON

    async_fire_mqtt_message(hass, "state-topic", "0")

    state = hass.states.get("switch.test")
    assert state.state == STATE_OFF


async def test_sending_mqtt_commands_and_optimistic(hass, mock_publish):
    """Test the sending MQTT commands in optimistic mode."""
    fake_state = ha.State("switch.test", "on")

    with patch(
        "homeassistant.helpers.restore_state.RestoreEntity.async_get_last_state",
        return_value=mock_coro(fake_state),
    ):
        assert await async_setup_component(
            hass,
            switch.DOMAIN,
            {
                switch.DOMAIN: {
                    "platform": "mqtt",
                    "name": "test",
                    "command_topic": "command-topic",
                    "payload_on": "beer on",
                    "payload_off": "beer off",
                    "qos": "2",
                }
            },
        )

    state = hass.states.get("switch.test")
    assert state.state == STATE_ON
    assert state.attributes.get(ATTR_ASSUMED_STATE)

    await common.async_turn_on(hass, "switch.test")

    mock_publish.async_publish.assert_called_once_with(
        "command-topic", "beer on", 2, False
    )
    mock_publish.async_publish.reset_mock()
    state = hass.states.get("switch.test")
    assert state.state == STATE_ON

    await common.async_turn_off(hass, "switch.test")

    mock_publish.async_publish.assert_called_once_with(
        "command-topic", "beer off", 2, False
    )
    state = hass.states.get("switch.test")
    assert state.state == STATE_OFF


async def test_controlling_state_via_topic_and_json_message(hass, mock_publish):
    """Test the controlling state via topic and JSON message."""
    assert await async_setup_component(
        hass,
        switch.DOMAIN,
        {
            switch.DOMAIN: {
                "platform": "mqtt",
                "name": "test",
                "state_topic": "state-topic",
                "command_topic": "command-topic",
                "payload_on": "beer on",
                "payload_off": "beer off",
                "value_template": "{{ value_json.val }}",
            }
        },
    )

    state = hass.states.get("switch.test")
    assert state.state == STATE_OFF

    async_fire_mqtt_message(hass, "state-topic", '{"val":"beer on"}')

    state = hass.states.get("switch.test")
    assert state.state == STATE_ON

    async_fire_mqtt_message(hass, "state-topic", '{"val":"beer off"}')

    state = hass.states.get("switch.test")
    assert state.state == STATE_OFF


async def test_default_availability_payload(hass, mock_publish):
    """Test the availability payload."""
    assert await async_setup_component(
        hass,
        switch.DOMAIN,
        {
            switch.DOMAIN: {
                "platform": "mqtt",
                "name": "test",
                "state_topic": "state-topic",
                "command_topic": "command-topic",
                "availability_topic": "availability_topic",
                "payload_on": 1,
                "payload_off": 0,
            }
        },
    )

    state = hass.states.get("switch.test")
    assert state.state == STATE_UNAVAILABLE

    async_fire_mqtt_message(hass, "availability_topic", "online")

    state = hass.states.get("switch.test")
    assert state.state == STATE_OFF
    assert not state.attributes.get(ATTR_ASSUMED_STATE)

    async_fire_mqtt_message(hass, "availability_topic", "offline")

    state = hass.states.get("switch.test")
    assert state.state == STATE_UNAVAILABLE

    async_fire_mqtt_message(hass, "state-topic", "1")

    state = hass.states.get("switch.test")
    assert state.state == STATE_UNAVAILABLE

    async_fire_mqtt_message(hass, "availability_topic", "online")

    state = hass.states.get("switch.test")
    assert state.state == STATE_ON


async def test_custom_availability_payload(hass, mock_publish):
    """Test the availability payload."""
    assert await async_setup_component(
        hass,
        switch.DOMAIN,
        {
            switch.DOMAIN: {
                "platform": "mqtt",
                "name": "test",
                "state_topic": "state-topic",
                "command_topic": "command-topic",
                "availability_topic": "availability_topic",
                "payload_on": 1,
                "payload_off": 0,
                "payload_available": "good",
                "payload_not_available": "nogood",
            }
        },
    )

    state = hass.states.get("switch.test")
    assert state.state == STATE_UNAVAILABLE

    async_fire_mqtt_message(hass, "availability_topic", "good")

    state = hass.states.get("switch.test")
    assert state.state == STATE_OFF
    assert not state.attributes.get(ATTR_ASSUMED_STATE)

    async_fire_mqtt_message(hass, "availability_topic", "nogood")

    state = hass.states.get("switch.test")
    assert state.state == STATE_UNAVAILABLE

    async_fire_mqtt_message(hass, "state-topic", "1")

    state = hass.states.get("switch.test")
    assert state.state == STATE_UNAVAILABLE

    async_fire_mqtt_message(hass, "availability_topic", "good")

    state = hass.states.get("switch.test")
    assert state.state == STATE_ON


async def test_custom_state_payload(hass, mock_publish):
    """Test the state payload."""
    assert await async_setup_component(
        hass,
        switch.DOMAIN,
        {
            switch.DOMAIN: {
                "platform": "mqtt",
                "name": "test",
                "state_topic": "state-topic",
                "command_topic": "command-topic",
                "payload_on": 1,
                "payload_off": 0,
                "state_on": "HIGH",
                "state_off": "LOW",
            }
        },
    )

    state = hass.states.get("switch.test")
    assert state.state == STATE_OFF
    assert not state.attributes.get(ATTR_ASSUMED_STATE)

    async_fire_mqtt_message(hass, "state-topic", "HIGH")

    state = hass.states.get("switch.test")
    assert state.state == STATE_ON

    async_fire_mqtt_message(hass, "state-topic", "LOW")

    state = hass.states.get("switch.test")
    assert state.state == STATE_OFF


async def test_setting_attribute_via_mqtt_json_message(hass, mqtt_mock):
    """Test the setting of attribute via MQTT with JSON payload."""
    assert await async_setup_component(
        hass,
        switch.DOMAIN,
        {
            switch.DOMAIN: {
                "platform": "mqtt",
                "name": "test",
                "command_topic": "test-topic",
                "json_attributes_topic": "attr-topic",
            }
        },
    )

    async_fire_mqtt_message(hass, "attr-topic", '{ "val": "100" }')
    state = hass.states.get("switch.test")

    assert state.attributes.get("val") == "100"


async def test_update_with_json_attrs_not_dict(hass, mqtt_mock, caplog):
    """Test attributes get extracted from a JSON result."""
    assert await async_setup_component(
        hass,
        switch.DOMAIN,
        {
            switch.DOMAIN: {
                "platform": "mqtt",
                "name": "test",
                "command_topic": "test-topic",
                "json_attributes_topic": "attr-topic",
            }
        },
    )

    async_fire_mqtt_message(hass, "attr-topic", '[ "list", "of", "things"]')
    state = hass.states.get("switch.test")

    assert state.attributes.get("val") is None
    assert "JSON result was not a dictionary" in caplog.text


async def test_update_with_json_attrs_bad_JSON(hass, mqtt_mock, caplog):
    """Test attributes get extracted from a JSON result."""
    assert await async_setup_component(
        hass,
        switch.DOMAIN,
        {
            switch.DOMAIN: {
                "platform": "mqtt",
                "name": "test",
                "command_topic": "test-topic",
                "json_attributes_topic": "attr-topic",
            }
        },
    )

    async_fire_mqtt_message(hass, "attr-topic", "This is not JSON")

    state = hass.states.get("switch.test")
    assert state.attributes.get("val") is None
    assert "Erroneous JSON: This is not JSON" in caplog.text


async def test_discovery_update_attr(hass, mqtt_mock, caplog):
    """Test update of discovered MQTTAttributes."""
    entry = MockConfigEntry(domain=mqtt.DOMAIN)
    await async_start(hass, "homeassistant", {}, entry)
    data1 = (
        '{ "name": "Beer",'
        '  "command_topic": "test_topic",'
        '  "json_attributes_topic": "attr-topic1" }'
    )
    data2 = (
        '{ "name": "Beer",'
        '  "command_topic": "test_topic",'
        '  "json_attributes_topic": "attr-topic2" }'
    )
    async_fire_mqtt_message(hass, "homeassistant/switch/bla/config", data1)
    await hass.async_block_till_done()
    async_fire_mqtt_message(hass, "attr-topic1", '{ "val": "100" }')
    state = hass.states.get("switch.beer")
    assert state.attributes.get("val") == "100"

    # Change json_attributes_topic
    async_fire_mqtt_message(hass, "homeassistant/switch/bla/config", data2)
    await hass.async_block_till_done()

    # Verify we are no longer subscribing to the old topic
    async_fire_mqtt_message(hass, "attr-topic1", '{ "val": "50" }')
    state = hass.states.get("switch.beer")
    assert state.attributes.get("val") == "100"

    # Verify we are subscribing to the new topic
    async_fire_mqtt_message(hass, "attr-topic2", '{ "val": "75" }')
    state = hass.states.get("switch.beer")
    assert state.attributes.get("val") == "75"


async def test_unique_id(hass):
    """Test unique id option only creates one switch per unique_id."""
    await async_mock_mqtt_component(hass)
    assert await async_setup_component(
        hass,
        switch.DOMAIN,
        {
            switch.DOMAIN: [
                {
                    "platform": "mqtt",
                    "name": "Test 1",
                    "state_topic": "test-topic",
                    "command_topic": "command-topic",
                    "unique_id": "TOTALLY_UNIQUE",
                },
                {
                    "platform": "mqtt",
                    "name": "Test 2",
                    "state_topic": "test-topic",
                    "command_topic": "command-topic",
                    "unique_id": "TOTALLY_UNIQUE",
                },
            ]
        },
    )

    async_fire_mqtt_message(hass, "test-topic", "payload")

    assert len(hass.states.async_entity_ids()) == 1


async def test_discovery_removal_switch(hass, mqtt_mock, caplog):
    """Test removal of discovered switch."""
    entry = MockConfigEntry(domain=mqtt.DOMAIN)
    await async_start(hass, "homeassistant", {}, entry)

    data = (
        '{ "name": "Beer",'
        '  "state_topic": "test_topic",'
        '  "command_topic": "test_topic" }'
    )

    async_fire_mqtt_message(hass, "homeassistant/switch/bla/config", data)
    await hass.async_block_till_done()

    state = hass.states.get("switch.beer")
    assert state is not None
    assert state.name == "Beer"

    async_fire_mqtt_message(hass, "homeassistant/switch/bla/config", "")
    await hass.async_block_till_done()

    state = hass.states.get("switch.beer")
    assert state is None


async def test_discovery_update_switch(hass, mqtt_mock, caplog):
    """Test update of discovered switch."""
    entry = MockConfigEntry(domain=mqtt.DOMAIN)
    await async_start(hass, "homeassistant", {}, entry)

    data1 = (
        '{ "name": "Beer",'
        '  "state_topic": "test_topic",'
        '  "command_topic": "test_topic" }'
    )
    data2 = (
        '{ "name": "Milk",'
        '  "state_topic": "test_topic",'
        '  "command_topic": "test_topic" }'
    )

    async_fire_mqtt_message(hass, "homeassistant/switch/bla/config", data1)
    await hass.async_block_till_done()

    state = hass.states.get("switch.beer")
    assert state is not None
    assert state.name == "Beer"

    async_fire_mqtt_message(hass, "homeassistant/switch/bla/config", data2)
    await hass.async_block_till_done()

    state = hass.states.get("switch.beer")
    assert state is not None
    assert state.name == "Milk"
    state = hass.states.get("switch.milk")
    assert state is None


async def test_discovery_broken(hass, mqtt_mock, caplog):
    """Test handling of bad discovery message."""
    entry = MockConfigEntry(domain=mqtt.DOMAIN)
    await async_start(hass, "homeassistant", {}, entry)

    data1 = '{ "name": "Beer" }'
    data2 = (
        '{ "name": "Milk",'
        '  "state_topic": "test_topic",'
        '  "command_topic": "test_topic" }'
    )

    async_fire_mqtt_message(hass, "homeassistant/switch/bla/config", data1)
    await hass.async_block_till_done()

    state = hass.states.get("switch.beer")
    assert state is None

    async_fire_mqtt_message(hass, "homeassistant/switch/bla/config", data2)
    await hass.async_block_till_done()

    state = hass.states.get("switch.milk")
    assert state is not None
    assert state.name == "Milk"
    state = hass.states.get("switch.beer")
    assert state is None


async def test_entity_device_info_with_identifier(hass, mqtt_mock):
    """Test MQTT switch device registry integration."""
    entry = MockConfigEntry(domain=mqtt.DOMAIN)
    entry.add_to_hass(hass)
    await async_start(hass, "homeassistant", {}, entry)
    registry = await hass.helpers.device_registry.async_get_registry()

    data = json.dumps(
        {
            "platform": "mqtt",
            "name": "Test 1",
            "state_topic": "test-topic",
            "command_topic": "test-command-topic",
            "device": {
                "identifiers": ["helloworld"],
                "connections": [["mac", "02:5b:26:a8:dc:12"]],
                "manufacturer": "Whatever",
                "name": "Beer",
                "model": "Glass",
                "sw_version": "0.1-beta",
            },
            "unique_id": "veryunique",
        }
    )
    async_fire_mqtt_message(hass, "homeassistant/switch/bla/config", data)
    await hass.async_block_till_done()

    device = registry.async_get_device({("mqtt", "helloworld")}, set())
    assert device is not None
    assert device.identifiers == {("mqtt", "helloworld")}
    assert device.connections == {("mac", "02:5b:26:a8:dc:12")}
    assert device.manufacturer == "Whatever"
    assert device.name == "Beer"
    assert device.model == "Glass"
    assert device.sw_version == "0.1-beta"


async def test_entity_device_info_update(hass, mqtt_mock):
    """Test device registry update."""
    entry = MockConfigEntry(domain=mqtt.DOMAIN)
    entry.add_to_hass(hass)
    await async_start(hass, "homeassistant", {}, entry)
    registry = await hass.helpers.device_registry.async_get_registry()

    config = {
        "platform": "mqtt",
        "name": "Test 1",
        "state_topic": "test-topic",
        "command_topic": "test-command-topic",
        "device": {
            "identifiers": ["helloworld"],
            "connections": [["mac", "02:5b:26:a8:dc:12"]],
            "manufacturer": "Whatever",
            "name": "Beer",
            "model": "Glass",
            "sw_version": "0.1-beta",
        },
        "unique_id": "veryunique",
    }

    data = json.dumps(config)
    async_fire_mqtt_message(hass, "homeassistant/switch/bla/config", data)
    await hass.async_block_till_done()

    device = registry.async_get_device({("mqtt", "helloworld")}, set())
    assert device is not None
    assert device.name == "Beer"

    config["device"]["name"] = "Milk"
    data = json.dumps(config)
    async_fire_mqtt_message(hass, "homeassistant/switch/bla/config", data)
    await hass.async_block_till_done()

    device = registry.async_get_device({("mqtt", "helloworld")}, set())
    assert device is not None
    assert device.name == "Milk"


async def test_entity_id_update(hass, mqtt_mock):
    """Test MQTT subscriptions are managed when entity_id is updated."""
    registry = mock_registry(hass, {})
    mock_mqtt = await async_mock_mqtt_component(hass)
    assert await async_setup_component(
        hass,
        switch.DOMAIN,
        {
            switch.DOMAIN: [
                {
                    "platform": "mqtt",
                    "name": "beer",
                    "state_topic": "test-topic",
                    "command_topic": "command-topic",
                    "availability_topic": "avty-topic",
                    "unique_id": "TOTALLY_UNIQUE",
                }
            ]
        },
    )

    state = hass.states.get("switch.beer")
    assert state is not None
    assert mock_mqtt.async_subscribe.call_count == 2
    mock_mqtt.async_subscribe.assert_any_call("test-topic", ANY, 0, "utf-8")
    mock_mqtt.async_subscribe.assert_any_call("avty-topic", ANY, 0, "utf-8")
    mock_mqtt.async_subscribe.reset_mock()

    registry.async_update_entity("switch.beer", new_entity_id="switch.milk")
    await hass.async_block_till_done()

    state = hass.states.get("switch.beer")
    assert state is None

    state = hass.states.get("switch.milk")
    assert state is not None
    assert mock_mqtt.async_subscribe.call_count == 2
    mock_mqtt.async_subscribe.assert_any_call("test-topic", ANY, 0, "utf-8")
    mock_mqtt.async_subscribe.assert_any_call("avty-topic", ANY, 0, "utf-8")
