"""The tests for the MQTT subscription component."""
from unittest.mock import ANY, patch

import pytest

from homeassistant.components.mqtt.subscription import (
    async_prepare_subscribe_topics,
    async_subscribe_topics,
    async_unsubscribe_topics,
)
from homeassistant.core import HomeAssistant, callback

from tests.common import async_fire_mqtt_message
from tests.typing import MqttMockHAClientGenerator


@pytest.fixture(autouse=True)
def no_platforms():
    """Skip platform setup to speed up tests."""
    with patch("homeassistant.components.mqtt.PLATFORMS", []):
        yield


async def test_subscribe_topics(
    hass: HomeAssistant,
    mqtt_mock_entry: MqttMockHAClientGenerator,
    caplog: pytest.LogCaptureFixture,
) -> None:
    """Test subscription to topics."""
    await mqtt_mock_entry()
    calls1 = []

    @callback
    def record_calls1(*args):
        """Record calls."""
        calls1.append(args)

    calls2 = []

    @callback
    def record_calls2(*args):
        """Record calls."""
        calls2.append(args)

    sub_state = None
    sub_state = async_prepare_subscribe_topics(
        hass,
        sub_state,
        {
            "test_topic1": {"topic": "test-topic1", "msg_callback": record_calls1},
            "test_topic2": {"topic": "test-topic2", "msg_callback": record_calls2},
        },
    )
    await async_subscribe_topics(hass, sub_state)

    async_fire_mqtt_message(hass, "test-topic1", "test-payload1")
    assert len(calls1) == 1
    assert calls1[0][0].topic == "test-topic1"
    assert calls1[0][0].payload == "test-payload1"
    assert len(calls2) == 0

    async_fire_mqtt_message(hass, "test-topic2", "test-payload2")
    assert len(calls1) == 1
    assert len(calls2) == 1
    assert calls2[0][0].topic == "test-topic2"
    assert calls2[0][0].payload == "test-payload2"

    async_unsubscribe_topics(hass, sub_state)

    async_fire_mqtt_message(hass, "test-topic1", "test-payload")
    async_fire_mqtt_message(hass, "test-topic2", "test-payload")

    assert len(calls1) == 1
    assert len(calls2) == 1


async def test_modify_topics(
    hass: HomeAssistant,
    mqtt_mock_entry: MqttMockHAClientGenerator,
    caplog: pytest.LogCaptureFixture,
) -> None:
    """Test modification of topics."""
    await mqtt_mock_entry()
    calls1 = []

    @callback
    def record_calls1(*args):
        """Record calls."""
        calls1.append(args)

    calls2 = []

    @callback
    def record_calls2(*args):
        """Record calls."""
        calls2.append(args)

    sub_state = None
    sub_state = async_prepare_subscribe_topics(
        hass,
        sub_state,
        {
            "test_topic1": {"topic": "test-topic1", "msg_callback": record_calls1},
            "test_topic2": {"topic": "test-topic2", "msg_callback": record_calls2},
        },
    )
    await async_subscribe_topics(hass, sub_state)

    async_fire_mqtt_message(hass, "test-topic1", "test-payload")
    assert len(calls1) == 1
    assert len(calls2) == 0

    async_fire_mqtt_message(hass, "test-topic2", "test-payload")
    assert len(calls1) == 1
    assert len(calls2) == 1

    sub_state = async_prepare_subscribe_topics(
        hass,
        sub_state,
        {"test_topic1": {"topic": "test-topic1_1", "msg_callback": record_calls1}},
    )
    await async_subscribe_topics(hass, sub_state)

    async_fire_mqtt_message(hass, "test-topic1", "test-payload")
    async_fire_mqtt_message(hass, "test-topic2", "test-payload")
    assert len(calls1) == 1
    assert len(calls2) == 1

    async_fire_mqtt_message(hass, "test-topic1_1", "test-payload")
    assert len(calls1) == 2
    assert calls1[1][0].topic == "test-topic1_1"
    assert calls1[1][0].payload == "test-payload"
    assert len(calls2) == 1

    async_unsubscribe_topics(hass, sub_state)

    async_fire_mqtt_message(hass, "test-topic1_1", "test-payload")
    async_fire_mqtt_message(hass, "test-topic2", "test-payload")

    assert len(calls1) == 2
    assert len(calls2) == 1


async def test_qos_encoding_default(
    hass: HomeAssistant,
    mqtt_mock_entry: MqttMockHAClientGenerator,
    caplog: pytest.LogCaptureFixture,
) -> None:
    """Test default qos and encoding."""
    mqtt_mock = await mqtt_mock_entry()

    @callback
    def msg_callback(*args):
        """Do nothing."""

    sub_state = None
    sub_state = async_prepare_subscribe_topics(
        hass,
        sub_state,
        {"test_topic1": {"topic": "test-topic1", "msg_callback": msg_callback}},
    )
    await async_subscribe_topics(hass, sub_state)
    mqtt_mock.async_subscribe.assert_called_with("test-topic1", ANY, 0, "utf-8")


async def test_qos_encoding_custom(
    hass: HomeAssistant,
    mqtt_mock_entry: MqttMockHAClientGenerator,
    caplog: pytest.LogCaptureFixture,
) -> None:
    """Test custom qos and encoding."""
    mqtt_mock = await mqtt_mock_entry()

    @callback
    def msg_callback(*args):
        """Do nothing."""

    sub_state = None
    sub_state = async_prepare_subscribe_topics(
        hass,
        sub_state,
        {
            "test_topic1": {
                "topic": "test-topic1",
                "msg_callback": msg_callback,
                "qos": 1,
                "encoding": "utf-16",
            }
        },
    )
    await async_subscribe_topics(hass, sub_state)
    mqtt_mock.async_subscribe.assert_called_with("test-topic1", ANY, 1, "utf-16")


async def test_no_change(
    hass: HomeAssistant,
    mqtt_mock_entry: MqttMockHAClientGenerator,
    caplog: pytest.LogCaptureFixture,
) -> None:
    """Test subscription to topics without change."""
    mqtt_mock = await mqtt_mock_entry()

    calls = []

    @callback
    def record_calls(*args):
        """Record calls."""
        calls.append(args)

    sub_state = None
    sub_state = async_prepare_subscribe_topics(
        hass,
        sub_state,
        {"test_topic1": {"topic": "test-topic1", "msg_callback": record_calls}},
    )
    await async_subscribe_topics(hass, sub_state)
    subscribe_call_count = mqtt_mock.async_subscribe.call_count

    async_fire_mqtt_message(hass, "test-topic1", "test-payload")
    assert len(calls) == 1

    sub_state = async_prepare_subscribe_topics(
        hass,
        sub_state,
        {"test_topic1": {"topic": "test-topic1", "msg_callback": record_calls}},
    )
    await async_subscribe_topics(hass, sub_state)
    assert subscribe_call_count == mqtt_mock.async_subscribe.call_count

    async_fire_mqtt_message(hass, "test-topic1", "test-payload")
    assert len(calls) == 2

    async_unsubscribe_topics(hass, sub_state)

    async_fire_mqtt_message(hass, "test-topic1", "test-payload")
    assert len(calls) == 2