"""Tests for the Home related functionality."""

import base64
from collections.abc import Iterator
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

from roborock.data.containers import CombinedMapInfo, HomeDataRoom, NamedRoomMapping
from roborock.data.v1.v1_code_mappings import RoborockStateCode
from roborock.data.v1.v1_containers import MultiMapsListMapInfo, MultiMapsListRoom
from roborock.devices.cache import DeviceCache, DeviceCacheData, InMemoryCache
from roborock.devices.device import RoborockDevice
from roborock.devices.traits.v1.home import HomeTrait
from roborock.devices.traits.v1.map_content import MapContentTrait
from roborock.devices.traits.v1.maps import MapsTrait
from roborock.devices.traits.v1.rooms import RoomsTrait
from roborock.devices.traits.v1.status import StatusTrait
from roborock.exceptions import RoborockDeviceBusy, RoborockException, RoborockInvalidStatus
from roborock.map.map_parser import ParsedMapData
from roborock.roborock_typing import RoborockCommand
from tests import mock_data

MULTI_MAP_LIST_DATA = [
    {
        "max_multi_map": 2,
        "max_bak_map": 1,
        "multi_map_count": 2,
        "map_info": [
            {
                "mapFlag": 0,
                "add_time": 1747132930,
                "length": 0,
                "name": "Ground Floor",
                "bak_maps": [{"mapFlag": 4, "add_time": 1747132936}],
            },
            {
                "mapFlag": 123,
                "add_time": 1747132940,
                "length": 0,
                "name": "Second Floor",
                "bak_maps": [{"mapFlag": 5, "add_time": 1747132946}],
            },
        ],
    }
]
MULTI_MAP_LIST_SINGLE_MAP_DATA = [
    {
        "max_multi_map": 1,
        "max_bak_map": 0,
        "multi_map_count": 1,
        "map_info": [
            {
                "mapFlag": 0,
                "add_time": 1747132930,
                "length": 0,
                "name": "Only Floor",
                "bak_maps": [],
            },
        ],
    }
]

ROOM_MAPPING_DATA_MAP_0 = [[16, "2362048"], [17, "2362044"]]
ROOM_MAPPING_DATA_MAP_123 = [[18, "2362041"], [19, "2362042"]]

UPDATED_STATUS_MAP_0 = {
    **mock_data.STATUS,
    "map_status": 0 * 4 + 3,  # Set current map to 0
}

UPDATED_STATUS_MAP_123 = {
    **mock_data.STATUS,
    "map_status": 123 * 4 + 3,  # Set current map to 123
}
MAP_BYTES_RESPONSE_1 = b"<map bytes 1>"
MAP_BYTES_RESPONSE_2 = b"<map bytes 2>"
TEST_IMAGE_CONTENT_1 = b"<image bytes 1>"
TEST_IMAGE_CONTENT_2 = b"<image bytes 2>"
TEST_PARSER_MAP = {
    MAP_BYTES_RESPONSE_1: TEST_IMAGE_CONTENT_1,
    MAP_BYTES_RESPONSE_2: TEST_IMAGE_CONTENT_2,
}


@pytest.fixture(autouse=True)
def no_sleep() -> Iterator[None]:
    """Patch sleep to avoid delays in tests."""
    with patch("roborock.devices.traits.v1.home.asyncio.sleep"):
        yield


@pytest.fixture(name="cache")
def cache_fixture():
    """Create an in-memory cache for testing."""
    return InMemoryCache()


@pytest.fixture(name="device_cache")
def device_cache_fixture(cache: InMemoryCache) -> DeviceCache:
    """Create a DeviceCache instance for testing."""
    return DeviceCache(duid="abc123", cache=cache)


@pytest.fixture(autouse=True)
async def status_trait(mock_rpc_channel: AsyncMock, device: RoborockDevice) -> StatusTrait:
    """Create a StatusTrait instance with mocked dependencies."""
    assert device.v1_properties
    status_trait = device.v1_properties.status

    # Verify initial state
    assert status_trait.current_map is None
    mock_rpc_channel.send_command.side_effect = [UPDATED_STATUS_MAP_0]
    await status_trait.refresh()
    assert status_trait.current_map == 0

    mock_rpc_channel.reset_mock()
    return status_trait


@pytest.fixture
def maps_trait(device: RoborockDevice) -> MapsTrait:
    """Create a MapsTrait instance with mocked dependencies."""
    assert device.v1_properties
    return device.v1_properties.maps


@pytest.fixture
def map_content_trait(device: RoborockDevice) -> MapContentTrait:
    """Create a MapContentTrait instance with mocked dependencies."""
    assert device.v1_properties
    return device.v1_properties.map_content


@pytest.fixture
def rooms_trait(device: RoborockDevice) -> RoomsTrait:
    """Create a RoomsTrait instance with mocked dependencies."""
    assert device.v1_properties
    return device.v1_properties.rooms


@pytest.fixture
def mock_web_api(web_api_client: AsyncMock) -> AsyncMock:
    """Alias the shared web API fixture for readability in this module."""
    web_api_client.get_rooms.return_value = []
    return web_api_client


@pytest.fixture
def home_trait(
    status_trait: StatusTrait,
    maps_trait: MapsTrait,
    map_content_trait: MapContentTrait,
    rooms_trait: RoomsTrait,
    device_cache: DeviceCache,
) -> HomeTrait:
    """Create a HomeTrait instance with mocked dependencies."""
    return HomeTrait(status_trait, maps_trait, map_content_trait, rooms_trait, device_cache)


@pytest.fixture(autouse=True)
def map_parser_fixture() -> Iterator[None]:
    """Mock MapParser.parse to return predefined test map data."""

    def parse_data(response: bytes) -> ParsedMapData:
        if image_content := TEST_PARSER_MAP.get(response):
            return ParsedMapData(
                image_content=image_content,
                map_data=MagicMock(),
            )
        raise ValueError(f"Unexpected map bytes {response!r}")

    with patch("roborock.devices.traits.v1.map_content.MapParser.parse", side_effect=parse_data):
        yield


async def test_discover_home_empty_cache(
    status_trait: StatusTrait,
    home_trait: HomeTrait,
    mock_rpc_channel: AsyncMock,
    mock_mqtt_rpc_channel: AsyncMock,
    mock_map_rpc_channel: AsyncMock,
    device_cache: DeviceCache,
    web_api_client: AsyncMock,
) -> None:
    """Test discovering home when cache is empty."""
    # Setup mocks for the discovery process
    mock_rpc_channel.send_command.side_effect = [
        UPDATED_STATUS_MAP_123,  # Status after switching to map 123
        ROOM_MAPPING_DATA_MAP_123,  # Rooms for map 123
        UPDATED_STATUS_MAP_0,  # Status after switching back to map 0
        ROOM_MAPPING_DATA_MAP_0,  # Rooms for map 0
    ]
    mock_mqtt_rpc_channel.send_command.side_effect = [
        MULTI_MAP_LIST_DATA,  # Multi maps list
        {},  # LOAD_MULTI_MAP response for map 123
        {},  # LOAD_MULTI_MAP response back to map 0
    ]
    mock_map_rpc_channel.send_command.side_effect = [
        MAP_BYTES_RESPONSE_2,  # Map bytes for 123
        MAP_BYTES_RESPONSE_1,  # Map bytes for 0
    ]
    # We have an empty home data so the room list gets loaded
    web_api_client.get_rooms.return_value = [
        HomeDataRoom(id=2362048, name="Example room 1"),
        HomeDataRoom(id=2362044, name="Example room 2"),
        HomeDataRoom(id=2362041, name="Example room 3"),
    ]

    # Before discovery, no cache should exist
    assert home_trait.home_map_info is None
    assert home_trait.current_map_data is None

    # Perform home discovery
    await home_trait.discover_home()

    # Verify cache is populated
    assert home_trait.home_map_info is not None
    assert len(home_trait.home_map_info) == 2

    # Check map 0 data
    map_0_data = home_trait.home_map_info[0]
    assert map_0_data.map_flag == 0
    assert map_0_data.name == "Ground Floor"
    assert len(map_0_data.rooms) == 2
    assert map_0_data.rooms[0].segment_id == 16
    assert map_0_data.rooms[0].iot_id == "2362048"
    assert map_0_data.rooms[0].name == "Example room 1"
    assert map_0_data.rooms[1].segment_id == 17
    assert map_0_data.rooms[1].iot_id == "2362044"
    assert map_0_data.rooms[1].name == "Example room 2"

    map_0_content = home_trait.home_map_content[0]
    assert map_0_content is not None
    assert map_0_content.image_content == TEST_IMAGE_CONTENT_1
    assert map_0_content.map_data is not None

    # Check map 123 data
    map_123_data = home_trait.home_map_info[123]
    assert map_123_data.map_flag == 123
    assert map_123_data.name == "Second Floor"
    assert len(map_123_data.rooms) == 2
    assert map_123_data.rooms[0].segment_id == 18
    assert map_123_data.rooms[0].iot_id == "2362041"
    assert map_123_data.rooms[0].name == "Example room 3"
    assert map_123_data.rooms[1].segment_id == 19
    assert map_123_data.rooms[1].iot_id == "2362042"
    assert map_123_data.rooms[1].name == "Room 19"  # Not in mock home data

    map_123_content = home_trait.home_map_content[123]
    assert map_123_content is not None
    assert map_123_content.image_content == TEST_IMAGE_CONTENT_2
    assert map_123_content.map_data is not None

    # Verify current map data is accessible
    current_map_data = home_trait.current_map_data
    assert current_map_data is not None
    assert current_map_data.map_flag == 0
    assert current_map_data.name == "Ground Floor"
    assert [room.name for room in home_trait.current_rooms] == [
        "Example room 1",
        "Example room 2",
    ]

    # Verify the persistent cache has been updated
    device_cache_data = await device_cache.get()
    assert device_cache_data.home_map_info is not None
    assert len(device_cache_data.home_map_info) == 2
    assert device_cache_data.home_map_content_base64 is not None
    assert len(device_cache_data.home_map_content_base64) == 2


@pytest.mark.parametrize(
    "device_cache_data",
    [
        DeviceCacheData(
            home_map_info={0: CombinedMapInfo(map_flag=0, name="Dummy", rooms=[])},
            home_map_content_base64={0: base64.b64encode(MAP_BYTES_RESPONSE_1).decode("utf-8")},
        ),
    ],
)
async def test_discover_home_with_existing_cache(
    home_trait: HomeTrait,
    mock_rpc_channel: AsyncMock,
    mock_mqtt_rpc_channel: AsyncMock,
    device_cache_data: DeviceCacheData,
    device_cache: DeviceCache,
) -> None:
    """Test that discovery is skipped when cache already exists."""
    # Pre-populate the cache
    await device_cache.set(device_cache_data)

    # Call discover_home
    await home_trait.discover_home()

    # Verify no RPC calls were made (discovery was skipped)
    assert mock_rpc_channel.send_command.call_count == 0
    assert mock_mqtt_rpc_channel.send_command.call_count == 0

    # Verify cache was loaded from storage
    assert home_trait.home_map_info == {0: CombinedMapInfo(map_flag=0, name="Dummy", rooms=[])}
    assert home_trait.home_map_content
    assert home_trait.home_map_content.keys() == {0}
    map_0_content = home_trait.home_map_content[0]
    assert map_0_content is not None
    assert map_0_content.image_content == TEST_IMAGE_CONTENT_1
    assert map_0_content.map_data is not None


async def test_existing_home_cache_invalid_bytes(
    home_trait: HomeTrait,
    device_cache: DeviceCache,
    mock_rpc_channel: AsyncMock,
    mock_mqtt_rpc_channel: AsyncMock,
    mock_map_rpc_channel: AsyncMock,
) -> None:
    """Test that discovery is skipped when cache already exists."""
    # Pre-populate the cache.
    cache_data = await device_cache.get()
    cache_data.home_map_info = {0: CombinedMapInfo(map_flag=0, name="Dummy", rooms=[])}
    # We override the map bytes parser to raise an exception above.
    cache_data.home_map_content_base64 = {0: base64.b64encode(MAP_BYTES_RESPONSE_1).decode("utf-8")}
    await device_cache.set(cache_data)

    # Setup mocks for the discovery process
    mock_rpc_channel.send_command.side_effect = [
        ROOM_MAPPING_DATA_MAP_0,  # Rooms for the single map
    ]
    mock_mqtt_rpc_channel.send_command.side_effect = [
        MULTI_MAP_LIST_SINGLE_MAP_DATA,  # Single map list
    ]
    mock_map_rpc_channel.send_command.side_effect = [
        MAP_BYTES_RESPONSE_1,  # Map bytes for the single map
    ]

    # Call discover_home. First attempt raises an exception then loading from the server
    # produes a valid result.
    with patch(
        "roborock.devices.traits.v1.map_content.MapParser.parse",
        side_effect=[
            RoborockException("Invalid map bytes"),
            ParsedMapData(
                image_content=TEST_IMAGE_CONTENT_2,
                map_data=MagicMock(),
            ),
        ],
    ):
        await home_trait.discover_home()

    # Verify cache was loaded from storage. The map was re-fetched from storage.
    assert home_trait.home_map_info
    assert home_trait.home_map_info.keys() == {0}
    assert home_trait.home_map_info[0].name == "Only Floor"
    assert home_trait.home_map_content
    assert home_trait.home_map_content.keys() == {0}
    map_0_content = home_trait.home_map_content[0]
    assert map_0_content is not None
    assert map_0_content.image_content == TEST_IMAGE_CONTENT_2
    assert map_0_content.map_data is not None


async def test_discover_home_no_maps(
    home_trait: HomeTrait,
    mock_rpc_channel: AsyncMock,
    mock_mqtt_rpc_channel: AsyncMock,
) -> None:
    """Test discovery when no maps are available."""
    # Setup mock to return empty maps list
    mock_mqtt_rpc_channel.send_command.side_effect = [
        # Discover home
        [{"max_multi_map": 0, "max_bak_map": 0, "multi_map_count": 0, "map_info": []}],
        # Refresh
        [{"max_multi_map": 0, "max_bak_map": 0, "multi_map_count": 0, "map_info": []}],
    ]

    # Discover home should not change anything
    await home_trait.discover_home()
    assert home_trait.current_map_data is None
    assert home_trait.home_map_info == {}
    assert home_trait.home_map_content == {}
    assert home_trait.current_rooms == []

    # Refresh should not change anything
    await home_trait.refresh()
    assert home_trait.current_map_data is None
    assert home_trait.home_map_info == {}
    assert home_trait.home_map_content == {}
    assert home_trait.current_rooms == []


async def test_refresh_updates_current_map_cache(
    device_cache: DeviceCache,
    status_trait: StatusTrait,
    home_trait: HomeTrait,
    mock_rpc_channel: AsyncMock,
    mock_mqtt_rpc_channel: AsyncMock,
    mock_map_rpc_channel: AsyncMock,
) -> None:
    """Test that refresh updates the cache for the current map."""
    # Pre-populate cache with some data
    cache_data = await device_cache.get()
    cache_data.home_map_info = {0: CombinedMapInfo(map_flag=0, name="Old Ground Floor", rooms=[])}
    cache_data.home_map_content_base64 = {
        0: base64.b64encode(MAP_BYTES_RESPONSE_2).decode()
    }  # Pre-existing different map bytes
    await device_cache.set(cache_data)
    await home_trait.discover_home()  # Load cache into trait
    # Verify initial cache state
    assert home_trait.home_map_info
    assert home_trait.home_map_info.keys() == {0}
    assert home_trait.home_map_info[0].name == "Old Ground Floor"
    assert len(home_trait.home_map_info[0].rooms) == 0
    assert home_trait.home_map_content
    assert home_trait.home_map_content.keys() == {0}
    assert home_trait.home_map_content[0].image_content == TEST_IMAGE_CONTENT_2

    # Setup mocks for refresh
    mock_rpc_channel.send_command.side_effect = [
        ROOM_MAPPING_DATA_MAP_0,  # Room mapping refresh
    ]
    mock_mqtt_rpc_channel.send_command.side_effect = [
        MULTI_MAP_LIST_DATA,  # Maps refresh
    ]
    mock_map_rpc_channel.send_command.side_effect = [
        MAP_BYTES_RESPONSE_1,  # Map bytes refresh
    ]

    # Perform refresh
    await home_trait.refresh()

    # Verify cache was updated for current map
    assert home_trait.home_map_info
    assert home_trait.home_map_info.keys() == {0}
    assert home_trait.home_map_info[0].name == "Ground Floor"
    assert len(home_trait.home_map_info[0].rooms) == 2
    # Verify map content
    assert home_trait.home_map_content
    assert home_trait.home_map_content.keys() == {0}
    assert home_trait.home_map_content[0].image_content == TEST_IMAGE_CONTENT_1


async def test_current_map_data_property(
    home_trait: HomeTrait,
    mock_rpc_channel: AsyncMock,
    mock_mqtt_rpc_channel: AsyncMock,
    mock_map_rpc_channel: AsyncMock,
) -> None:
    """Test current_map_data property returns correct data."""
    # Setup discovery
    mock_rpc_channel.send_command.side_effect = [
        UPDATED_STATUS_MAP_123,  # Status after switching to map 123
        ROOM_MAPPING_DATA_MAP_123,  # Rooms for map 123
        UPDATED_STATUS_MAP_0,  # Status after switching back to map 0
        ROOM_MAPPING_DATA_MAP_0,  # Rooms for map 0
    ]
    mock_mqtt_rpc_channel.send_command.side_effect = [
        MULTI_MAP_LIST_DATA,  # Multi maps list
        {},  # LOAD_MULTI_MAP response for map 123
        {},  # LOAD_MULTI_MAP response back to map 0
    ]
    mock_map_rpc_channel.send_command.side_effect = [
        MAP_BYTES_RESPONSE_2,  # Map bytes for 123
        MAP_BYTES_RESPONSE_1,  # Map bytes for 0
    ]

    await home_trait.discover_home()

    # Test current map data (should be map 0)
    current_data = home_trait.current_map_data
    assert current_data is not None
    assert current_data.map_flag == 0
    assert current_data.name == "Ground Floor"

    # Test when no cache exists
    home_trait._home_map_info = None
    assert home_trait.current_map_data is None


async def test_discover_home_device_busy_cleaning(
    status_trait: StatusTrait,
    home_trait: HomeTrait,
    mock_rpc_channel: AsyncMock,
    mock_mqtt_rpc_channel: AsyncMock,
    mock_map_rpc_channel: AsyncMock,
    device_cache: DeviceCache,
) -> None:
    """Test that discovery raises RoborockDeviceBusy when device is cleaning.

    This tests the initial failure scenario during discovery where the device
    is busy, then a retry attempt where the device is still busy, then finally
    a successful attempt to run discovery when the device is idle.
    """
    # Set the status trait state to cleaning
    status_trait.state = RoborockStateCode.cleaning

    # Attempt to discover home while cleaning
    with pytest.raises(RoborockDeviceBusy, match="Cannot perform home discovery while the device is cleaning"):
        await home_trait.discover_home()

    # Verify no RPC calls were made (discovery was prevented)
    assert mock_rpc_channel.send_command.call_count == 0
    assert mock_mqtt_rpc_channel.send_command.call_count == 0

    # Setup mocks for refresh
    mock_rpc_channel.send_command.side_effect = [
        ROOM_MAPPING_DATA_MAP_0,  # Room mapping refresh
    ]
    mock_mqtt_rpc_channel.send_command.side_effect = [
        MULTI_MAP_LIST_DATA,  # Maps refresh
    ]
    mock_map_rpc_channel.send_command.side_effect = [
        MAP_BYTES_RESPONSE_1,  # Map bytes refresh
    ]

    # Now attempt to refresh the device while cleaning. This should still fail
    # home discovery but allow refresh to update the current map.
    await home_trait.refresh()

    # Verify the home information is now populated
    current_data = home_trait.current_map_data
    assert current_data is not None
    assert current_data.map_flag == 0
    assert current_data.name == "Ground Floor"
    assert home_trait.home_map_info is not None
    assert home_trait.home_map_info.keys() == {0}
    assert home_trait.home_map_content is not None
    assert home_trait.home_map_content.keys() == {0}
    assert [room.name for room in home_trait.current_rooms] == [
        "Example room 1",
        "Example room 2",
    ]

    map_0_content = home_trait.home_map_content[0]
    assert map_0_content is not None
    assert map_0_content.image_content == TEST_IMAGE_CONTENT_1
    assert map_0_content.map_data is not None

    # Verify the persistent cache has not been updated since discovery
    # has not fully completed.
    cache_data = await device_cache.get()
    assert not cache_data.home_map_info
    assert not cache_data.home_map_content_base64

    # Set the status trait state to idle which will mean we can attempt discovery
    # on the next refresh. This should have the result of updating the
    # persistent cache which is verified below.
    status_trait.state = RoborockStateCode.idle

    # Setup mocks for the discovery process
    mock_rpc_channel.send_command.side_effect = [
        UPDATED_STATUS_MAP_123,  # Status after switching to map 123
        ROOM_MAPPING_DATA_MAP_123,  # Rooms for map 123
        UPDATED_STATUS_MAP_0,  # Status after switching back to map 0
        ROOM_MAPPING_DATA_MAP_0,  # Rooms for map 0
    ]
    mock_mqtt_rpc_channel.send_command.side_effect = [
        MULTI_MAP_LIST_DATA,  # Multi maps list
        {},  # LOAD_MULTI_MAP response for map 123
        {},  # LOAD_MULTI_MAP response back to map 0
    ]
    mock_map_rpc_channel.send_command.side_effect = [
        MAP_BYTES_RESPONSE_2,  # Map bytes for 123
        MAP_BYTES_RESPONSE_1,  # Map bytes for 0
    ]

    # Refreshing should now perform discovery successfully
    await home_trait.refresh()

    # Verify we now have all of the information populated from discovery
    assert home_trait.home_map_info is not None
    assert home_trait.home_map_info.keys() == {0, 123}
    assert home_trait.home_map_content is not None
    assert home_trait.home_map_content.keys() == {0, 123}
    assert [room.name for room in home_trait.current_rooms] == [
        "Room 16",
        "Room 17",
    ]

    # Verify the persistent cache has been updated
    device_cache_data = await device_cache.get()
    assert device_cache_data.home_map_info is not None
    assert len(device_cache_data.home_map_info) == 2
    assert device_cache_data.home_map_content_base64 is not None
    assert len(device_cache_data.home_map_content_base64) == 2


async def test_refresh_falls_back_when_map_switch_action_locked(
    status_trait: StatusTrait,
    home_trait: HomeTrait,
    mock_rpc_channel: AsyncMock,
    mock_mqtt_rpc_channel: AsyncMock,
    mock_map_rpc_channel: AsyncMock,
    device_cache: DeviceCache,
) -> None:
    """Test that refresh falls back to current map when map switching is locked."""
    # Discovery attempt: we can list maps, but switching maps fails with -10007.
    mock_mqtt_rpc_channel.send_command.side_effect = [
        MULTI_MAP_LIST_DATA,  # Maps refresh during discover_home()
        RoborockInvalidStatus({"code": -10007, "message": "invalid status"}),  # LOAD_MULTI_MAP action locked
        MULTI_MAP_LIST_DATA,  # Maps refresh during refresh() fallback
    ]

    # Fallback refresh should still be able to refresh the current map.
    mock_rpc_channel.send_command.side_effect = [
        ROOM_MAPPING_DATA_MAP_0,  # Rooms for current map
    ]
    mock_map_rpc_channel.send_command.side_effect = [
        MAP_BYTES_RESPONSE_1,  # Map bytes for current map
    ]

    await home_trait.refresh()

    current_data = home_trait.current_map_data
    assert current_data is not None
    assert current_data.map_flag == 0
    assert current_data.name == "Ground Floor"

    assert home_trait.home_map_info is not None
    assert home_trait.home_map_info.keys() == {0}
    assert home_trait.home_map_content is not None
    assert home_trait.home_map_content.keys() == {0}
    map_0_content = home_trait.home_map_content[0]
    assert map_0_content.image_content == TEST_IMAGE_CONTENT_1

    # Discovery did not complete, so the persistent cache should not be updated.
    cache_data = await device_cache.get()
    assert not cache_data.home_map_info
    assert not cache_data.home_map_content_base64


async def test_single_map_no_switching(
    home_trait: HomeTrait,
    mock_rpc_channel: AsyncMock,
    mock_mqtt_rpc_channel: AsyncMock,
    mock_map_rpc_channel: AsyncMock,
) -> None:
    """Test that single map discovery doesn't trigger map switching."""
    mock_rpc_channel.send_command.side_effect = [
        ROOM_MAPPING_DATA_MAP_0,  # Rooms for the single map
    ]
    mock_mqtt_rpc_channel.send_command.side_effect = [
        MULTI_MAP_LIST_SINGLE_MAP_DATA,  # Single map list
    ]
    mock_map_rpc_channel.send_command.side_effect = [
        MAP_BYTES_RESPONSE_1,  # Map bytes for the single map
    ]

    await home_trait.discover_home()

    # Verify cache is populated
    assert home_trait.home_map_info is not None
    assert home_trait.home_map_info.keys() == {0}
    assert home_trait.home_map_content is not None
    assert home_trait.home_map_content.keys() == {0}

    # Verify no LOAD_MULTI_MAP commands were sent (no map switching)
    load_map_calls = [
        call
        for call in mock_mqtt_rpc_channel.send_command.call_args_list
        if call[1].get("command") == RoborockCommand.LOAD_MULTI_MAP
    ]
    assert len(load_map_calls) == 0


async def test_refresh_map_info_prefers_map_info_names_and_adds_missing_rooms(
    home_trait: HomeTrait,
    rooms_trait: RoomsTrait,
) -> None:
    """Test room merge behavior in _refresh_map_info.

    This test verifies:
    1. Existing map_info room names are preserved.
    2. Missing rooms from RoomsTrait are added.
    3. map_info fallback names are replaced by RoomsTrait names.
    """
    map_info = MultiMapsListMapInfo(
        map_flag=0,
        name="Test Map",
        rooms=[
            MultiMapsListRoom(
                id=16,
                iot_name_id="2362048",
                iot_name="Kitchen from map_info",
            ),
            MultiMapsListRoom(
                id=19,
                iot_name_id="2362042",
                iot_name="Bedroom from map_info",
            ),
            MultiMapsListRoom(
                id=20,
                iot_name_id="9999001",
                iot_name=None,
            ),
        ],
    )

    # Mock rooms_trait to return multiple rooms covering all scenarios:
    # - segment_id 16 with fallback name: exists in map_info, should NOT override
    # - segment_id 19 with valid name: exists in map_info, should NOT override
    # - segment_id 17 with fallback name: not in map_info, should be added
    # - segment_id 18 with valid name: not in map_info, should be added
    # - segment_id 20 with valid name: overrides map_info fallback "Room 20"
    rooms_trait.rooms = [
        NamedRoomMapping(segment_id=16, iot_id="2362048"),  # Will override even with no name
        NamedRoomMapping(
            segment_id=19, iot_id="2362042", raw_name="Updated Bedroom Name"
        ),  # Exists in map_info, should not override
        NamedRoomMapping(segment_id=17, iot_id="2362044"),  # Not in map_info, should be added
        NamedRoomMapping(
            segment_id=18, iot_id="2362041", raw_name="Example room 3"
        ),  # Not in map_info, should be added
        NamedRoomMapping(segment_id=20, iot_id="9999001", raw_name="Office from rooms_trait"),
    ]

    # Mock rooms_trait.refresh to prevent actual device calls
    with patch.object(rooms_trait, "refresh", new_callable=AsyncMock):
        result = await home_trait._refresh_map_info(map_info)

    assert result.map_flag == 0
    assert result.name == "Test Map"
    assert len(result.rooms) == 5

    # Sort rooms by segment_id for consistent assertions
    sorted_rooms = sorted(result.rooms, key=lambda r: r.segment_id)

    # Room 16: from map_info is overridden by rooms_trait
    assert sorted_rooms[0].segment_id == 16
    assert sorted_rooms[0].name == "Room 16"
    assert sorted_rooms[0].iot_id == "2362048"

    # Room 17: from rooms_trait with fallback name, added because not in map_info
    assert sorted_rooms[1].segment_id == 17
    assert sorted_rooms[1].name == "Room 17"
    assert sorted_rooms[1].iot_id == "2362044"

    # Room 18: from rooms_trait with valid name, added because not in map_info
    assert sorted_rooms[2].segment_id == 18
    assert sorted_rooms[2].name == "Example room 3"
    assert sorted_rooms[2].iot_id == "2362041"

    # Room 19: from map_info, kept (not overridden by rooms_trait)
    assert sorted_rooms[3].segment_id == 19
    assert sorted_rooms[3].name == "Updated Bedroom Name"
    assert sorted_rooms[3].iot_id == "2362042"

    # Room 20: map_info fallback name replaced by rooms_trait name
    assert sorted_rooms[4].segment_id == 20
    assert sorted_rooms[4].name == "Office from rooms_trait"
    assert sorted_rooms[4].iot_id == "9999001"
